WO2018085996A1 - 一种服务发现方法及服务发现装置 - Google Patents

一种服务发现方法及服务发现装置 Download PDF

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Publication number
WO2018085996A1
WO2018085996A1 PCT/CN2016/105125 CN2016105125W WO2018085996A1 WO 2018085996 A1 WO2018085996 A1 WO 2018085996A1 CN 2016105125 W CN2016105125 W CN 2016105125W WO 2018085996 A1 WO2018085996 A1 WO 2018085996A1
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WIPO (PCT)
Prior art keywords
service
nan device
service discovery
discovery message
information
Prior art date
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PCT/CN2016/105125
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English (en)
French (fr)
Inventor
李小仙
方平
Original Assignee
华为技术有限公司
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Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201680080799.7A priority Critical patent/CN108605051B/zh
Priority to US16/348,260 priority patent/US10819778B2/en
Priority to PCT/CN2016/105125 priority patent/WO2018085996A1/zh
Priority to EP16921359.2A priority patent/EP3528465B1/en
Publication of WO2018085996A1 publication Critical patent/WO2018085996A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/51—Discovery or management thereof, e.g. service location protocol [SLP] or web services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/01—Protocols
    • H04L67/10—Protocols in which an application is distributed across nodes in the network
    • H04L67/104—Peer-to-peer [P2P] networks
    • H04L67/1061—Peer-to-peer [P2P] networks using node-based peer discovery mechanisms
    • H04L67/1065—Discovery involving distributed pre-established resource-based relationships among peers, e.g. based on distributed hash tables [DHT] 
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/246—Connectivity information discovery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/32—Connectivity information management, e.g. connectivity discovery or connectivity update for defining a routing cluster membership
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/005—Discovery of network devices, e.g. terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/04—Terminal devices adapted for relaying to or from another terminal or user

Definitions

  • the present invention relates to the field of communications, and in particular, to a service discovery method and a service discovery device.
  • Wi-Fi Wireless-Fidelity
  • Wi-Fi Wireless-Fidelity
  • Wi-Fi Wireless-Fidelity
  • DW NAN-disclosed discovery window
  • a typical application scenario in a NAN cluster is to perform mutual service discovery between devices before association.
  • devices in the NAN cluster (which may be referred to as NAN devices) must be synchronized in order for devices in the NAN cluster to operate on the discovery channel in the DW and perform service discovery and cluster synchronization.
  • the NAN device can notify the other NAN devices in the NAN network that need to subscribe or publish the service by sending a Service Descriptor Frame (SDF) message in the DW and carrying the matching identifier indicating the service information.
  • SDF Service Descriptor Frame
  • the information of the data link of the subsequent establishment of the interactive service data is further confirmed by interacting with the SDF message with the NAN device, where the SDF message may be a service publishing (SDF Publish) message, a service query (SDF Subscribe) message, or a service follow-up ( SDF Follow-Up) messages, etc.
  • SDF Publish service publishing
  • SDF Subscribe service query
  • SDF follow-Up service follow-up
  • NAN devices have evolved from service discovery that supports only one hop to service discovery that can support multi-hop, but when applying SDF messages to multi-hop service discovery, new NAN devices supporting multi-hop service discovery are supported. Can judge the cancellation according to the received SDF message Whether the information is a single-hop SDF message or a multi-hop SDF message, and responds accordingly to the message, but the legacy NAN device that only supports the single-hop service discovery identifies the transited SDF message as a single-hop sent by the NAN transit device.
  • the old NAN device causes the old NAN device to receive the multi-hop SDF message forwarded by the NAN relay device, and the service information indicated by the matching identifier carried in the multi-hop SDF message matches the service required by the old NAN device, and the old NAN device
  • the NAN relay device responds to the multi-hop SDF message. Since the NAN transit device is not the service originating NAN device of the service corresponding to the multi-hop SDF message, the NAN transit device cannot provide the service required by the old NAN device, so the NAN transit is performed. The device does not respond to the response of the legacy NAN device, so that the response of the legacy NAN device to the transited multi-hop SDF message becomes an invalid response, causing the old version of the NAN device to waste device power and network resources.
  • the present invention provides a multi-hop service discovery method and a service discovery device, which can enable a NAN device that does not support multi-hop service discovery after the transited service discovery message is correctly received by the NAN device that supports the multi-hop service discovery.
  • the transited multi-hop service discovery message does not respond.
  • the embodiment of the present invention provides a service discovery method, including: receiving, by a second NAN device, a first service discovery message for service discovery sent by a first NAN device, where the first service discovery message includes a first The service identifier information and the first service relay indication information, where the first service identifier information is used to indicate a service that is subscribed to or published by the first service discovery message, where the first service relay indication information is used to indicate the service discovery The number of times that have been transferred;
  • the second NAN device acts as a service relay device that transits the service discovery initiated by the first NAN device, generates and sends a second service discovery message for the service discovery according to the first service discovery message.
  • the second service discovery message includes second service identification information and second service relay indication information;
  • the generating the second service discovery according to the first service discovery message includes:
  • the second NAN device generates the second service identification information according to the first service identifier information, and generates the second service relay indication information according to the first service relay indication information, where the first service The identifier information is different from the second service identifier information, where the second service identifier information is used to indicate a service that is subscribed to or published by the second service discovery message, and the second service relay indication information is used to indicate the The number of times the service discovery has been transferred.
  • the first service discovery message further includes a maximum hop count, where the maximum hop count is used to indicate a maximum number of times the service discovery is allowed to be transited;
  • the generating, by the first service discovery message, the second service discovery message for the service discovery is specifically:
  • the second NAN device determines, according to the first service relay indication information, that the number of times the service discovery has been transferred is less than the maximum hop count, the second NAN device generates the message according to the first service discovery message. A second service discovery message discovered by the service.
  • the second service discovery message further includes the maximum hop count.
  • the first service relay indication information is The hop count
  • the second service relay indication information is a second hop count
  • the service discovery method further includes:
  • the second NAN device When the first hop count is equal to zero, the second NAN device generates second service identifier information according to the first service identifier information, and generates the second hop count according to the first hop count, where the second The number of hops is greater than zero;
  • the second NAN device When the first hop count is greater than zero, the second NAN device generates the second service identifier information according to the first service identifier information, and generates the second hop count according to the first hop count, The second hop count is greater than or equal to the first hop count.
  • the first service discovery message further includes a transit validity time
  • the service discovery method further includes:
  • the timer is started
  • the second NAN device cancels sending the second service discovery message.
  • an embodiment of the present invention provides a service discovery method, including: receiving, by a third NAN device, a second service discovery message sent by a second NAN device for service discovery, where the second service discovery message includes a second The service identification information and the second service relay indication information, the second service identification information is used to indicate a service corresponding to the second service discovery message, and the second service relay indication information is used to indicate that the service discovery has been transferred The number of times the second service discovery message is sent by the second NAN device as the first NAN device after receiving the first service discovery message for the service discovery sent by the first NAN device.
  • the service discovery device that performs the transfer is generated and sent according to the first service discovery message;
  • the first service discovery message includes first service identification information and first service relay indication information, and the first service identification information a service for indicating that the first service discovery message is subscribed to or published, where the first service relay indication information is used to indicate that the service is sent It has been transit times; wherein, the first service identification information and the second service identification information is not identical;
  • the third NAN device Determining, by the third NAN device, the service that the first NAN device subscribes to or publishes by the service discovery and the service requirement of the third NAN device according to the second service identification information and the second service relay indication information
  • the third NAN device sends a service matching response message to the second NAN device.
  • the third NAN device determines, according to the second service identifier information and the second service relay indication information, that the first NAN device performs the service discovery Before the subscribed or published service matches the service requirement of the third NAN device, the method further includes:
  • the second service discovery message is a transited service discovery message.
  • the third NAN device determines, according to the second service identifier information and the second service relay indication information, that the first NAN device performs the service discovery Whether the subscribed or published service matches the service requirements of the third NAN device, including:
  • the third NAN device obtains the third service identifier information according to the second service identifier information and the second service relay indication information, where the third service identifier information is used to indicate that the first NAN device subscribes or advertises service;
  • the third NAN device determines whether the third service identification information matches a service corresponding to a service requirement of the third NAN device.
  • the third NAN device determines, according to the second service identifier information and the second service relay indication information, that the first NAN device performs the service discovery Whether the subscribed or published service matches the service requirements of the third NAN device, including:
  • the third NAN device generates fourth service identification information, where the fourth service identifier information is used to indicate the third NAN according to the service that is corresponding to the service requirement of the third NAN device.
  • the service corresponding to the service demand of the device;
  • the third NAN device determines whether the fourth service identification information and the second service identification information match.
  • the third NAN device determines, according to the second service relay indication information, that the second service discovery message is a transit service discovery News, including:
  • the third NAN device determines, according to the second service relay indication information, that the number of times the service discovery has been transferred is greater than zero.
  • the third NAN device sends a service to the second NAN device Match response messages, including:
  • the second service discovery message is an SDF Subscribe service subscription message, Sending, by the third NAN device, an SDF Publish service release message to the second NAN device;
  • the third NAN device sends an SDF Follow-up service subsequent message to the second NAN device.
  • the SDF Publish service advertisement message sent to the second NAN device carries multi-hop service matching indication information, or The multi-hop service matching indication information is carried in the SDF Follow-up service subsequent message sent to the second NAN device, where the multi-hop service matching indication information is used to indicate that the service matching response message is used to respond Transit service discovery message.
  • the embodiment of the present invention provides a service discovery method, including: receiving, by a second NAN device, a first service discovery message for service discovery sent by a first NAN device, where the first service discovery message includes a first Service identifier information, where the first service identifier information is used to indicate service information subscribed or published by the first service discovery message;
  • the second NAN device acts as a service relay device that transits the service discovery initiated by the first NAN device, generates and sends a second service discovery message for the service discovery according to the first service discovery message.
  • the generating the second service discovery message according to the first service discovery message includes:
  • the second NAN device generates the second service identifier information according to the first service identifier information, where the second service discovery message includes the second service identifier information and service multi-hop indication information, and the second service
  • the identifier information is used to indicate service information that is subscribed or issued by the second service discovery message, where the second service identifier information is not equal to the first service identifier information, and the service multi-hop indication information is used to indicate the
  • the second service discovery message is used to relay the service discovery.
  • the timing is started.
  • the second NAN device cancels sending the second service discovery message.
  • the embodiment of the present invention provides a service discovery method, including: receiving, by a third NAN device, a second service discovery message sent by a second NAN device for service discovery, where the second service discovery message includes a second The service identification information and the service multi-hop indication information, the second service identification information is used to indicate the service information subscribed or issued by the second service discovery message; the service multi-hop indication information is used to indicate the second service discovery
  • the message is used to transit the service discovery;
  • the second service discovery message is, after the second NAN device receives the first service discovery message sent by the first NAN device for the service discovery, as the a service forwarding device initiated by the NAN device to be transited, generated and sent according to the first service discovery message;
  • the first service discovery message includes first service identification information, where the first service identification information is used by The service information indicating that the first service discovery message is subscribed or published; the second service identification information is not related to the first service identification information ;
  • the third NAN device determines the first according to the second service identification information. Whether the service subscribed or published by the NAN device matches the service requirement of the third NAN device;
  • the third NAN device determines that the service subscribed or issued by the first NAN device matches the service requirement of the third NAN device, the third NAN device sends a service matching response message to the second NAN device.
  • the third NAN device determines, according to the second service identifier information, whether a service subscribed or issued by the first NAN device matches a service requirement of the third NAN device ,include:
  • the third NAN device determines, according to the second service identifier information, whether a service subscribed or issued by the first NAN device matches a service requirement of the third NAN device ,include:
  • the third NAN device is The second NAN device sends a service matching response message, including:
  • the third NAN device sends an SDF Publish service release message to the second NAN device;
  • the third NAN device sends an SDF Follow-up service subsequent message to the second NAN device.
  • the SDF Publish service advertisement message sent to the second NAN device carries multi-hop service matching indication information
  • the SDF follow-up service subsequent message sent by the second NAN device carries the multi-hop service matching indication information, where the multi-hop service matching indication information is used to indicate that the service matching response message is used to respond to the transit service discovery. Message.
  • the embodiment of the present invention provides a service discovery method, including: receiving, by a second NAN device, a first service discovery message for service discovery sent by a first NAN device, where the first service discovery message includes a first The service control type information and the first service identification information, the first service identification information is used to indicate a service to which the first service discovery message is subscribed or published, and the first service control type information is used to indicate the first The type of control of the service to which the service discovery message is subscribed or published;
  • the second NAN device acts as a service relay device that transits the service discovery initiated by the first NAN device, generates and sends a second service discovery message for the service discovery according to the first service discovery message.
  • the second service discovery message includes the second service control type information and the first service identification information, where the second service control type information is used to indicate that the second service discovery message corresponds to the subscribed or published service.
  • the second service control type information is different from the first service control type information, where the first service identification information is used to indicate that the first NAN device performs the service discovery subscription or the published service.
  • the first service control type information includes subscribing Subscribe or publishing Publish or subsequent Follow-up
  • the second service control type information includes other types, and the other types Unlike subscriptions, releases, or follow-ups.
  • the first service control type information includes 00 or 01 or 10
  • the second service control type information includes 11.
  • the first service discovery message further includes service relay indication information
  • the second NAN device generates and sends a second service discovery message, including:
  • the second NAN device determines to transit the service discovery according to the service relay indication information, the second NAN device generates and sends the second service discovery message.
  • the service relay indication information includes a first hop count and a maximum hop count, where the first hop count is used to indicate the first The number of times the service discovery corresponding to a service discovery message has been transferred, and the maximum hop count is used to indicate the maximum number of times the service discovery is allowed to be transferred;
  • Determining, by the second NAN device, the service discovery according to the service relay indication information including:
  • the second NAN device determines to transfer the service discovery.
  • the second service discovery message further includes a second hop count, where the second hop count is used to indicate the number of times the service discovery corresponding to the second service discovery message has been transferred.
  • the service discovery method further includes:
  • the second NAN device acquires the second service control type information, and generates the second hop count according to the first hop count, where the second hop count is greater than zero;
  • the second NAN device When the first hop count is greater than zero, the second NAN device generates the second hop count according to the first hop count, wherein the second hop count is greater than or equal to the first hop count.
  • the first service discovery message further includes a transit The effective time; the service discovery method further includes:
  • the timer is started
  • the second NAN device cancels sending the second service discovery message.
  • the service discovery method further includes:
  • the third NAN device Receiving, by the third NAN device, a third service discovery message, where the third NAN device is a NAN device that responds to the second service discovery message, where the third service discovery message includes third service control type information, where The third service control type information is used to indicate a control type of the service corresponding to the service requirement of the third NAN device;
  • the second NAN device determines that the control type of the service subscribed or issued by the first NAN device for the service discovery matches the third service control type, the second NAN device to the third NAN device Sending a fourth service discovery message, the fourth service discovery message is used to indicate to the third NAN device that the third service control type and the first NAN device perform a service that the service discovery subscribes to or publishes Control type match.
  • an embodiment of the present invention provides a service discovery method, including: a third NAN Receiving, by the second NAN device, a second service discovery message for service discovery, where the second service discovery message includes second service control type information and first service identification information, where the second service control type information is used And indicating a control type of the service subscribed or issued by the second service discovery message, where the first service identifier information is used to indicate that the first NAN device performs a service subscribed or published by the service discovery; the second service discovery After the second NAN device receives the first service discovery message for the service discovery sent by the first NAN device, the message is a service relay device that transits the service discovery initiated by the first NAN device.
  • the first service discovery message includes first service control type information and the first service identification information, where the first service control type information is used to indicate the a control type of a service to which a service discovery message is subscribed or published; the second service control type information and the first service control type Rates are not the same;
  • the third NAN device determines the first according to the first service identification information. Whether the NAN device performs the service to find whether the service subscribed or published matches the service corresponding to the service requirement of the third NAN device;
  • the third NAN device determines that the service subscribed or issued by the first NAN device for the service discovery matches the service corresponding to the service requirement of the third NAN device, the third NAN device goes to the The second NAN device sends a service matching response message.
  • the third NAN device determines, according to the second service control type information, that the second service discovery message is a transited service discovery message, where
  • the third NAN device determines that the second service control type is not any one of subscription, release, or subsequent, the third NAN device determines that the second service discovery message is a transited service discovery message.
  • the second service discovery message further includes the first service control type information
  • the third NAN device determines, according to the first service identifier information, whether the service that the first NAN device performs the service discovery subscription or the service corresponding to the service requirement of the third NAN device matches, including:
  • the service requirement of the third NAN device is capable of providing the service indicated by the first service identification information, determining that the first NAN device performs the service discovery subscription Or the published service matches the service corresponding to the service requirement of the third NAN device;
  • the first NAN device performs the service discovery subscription when the first service control type information is published, and the service requirement of the third NAN device needs to use the service indicated by the first service identification information. Or the published service matches the service corresponding to the service requirement of the third NAN device.
  • the third NAN device determines, according to the first service identifier information, that the first NAN device subscribes to the service discovery Whether the service corresponding to the service corresponding to the service requirement of the third NAN device matches, including:
  • the third NAN device generates, according to the service corresponding to the service requirement of the third NAN device, fifth service identifier information, where the fifth service identifier information is used to indicate a service corresponding to the service requirement of the third NAN device;
  • the third NAN device is to the second The NAN device sends a service matching response message, including:
  • the third NAN device sends a third service discovery message to the second NAN device, where the third service discovery message includes third service control type information, and the third service control type information is used to indicate the third The type of control of the service corresponding to the service requirement of the NAN device.
  • the service discovery method further includes:
  • the service matching response message carries a multi-hop service Matching indication information
  • the multi-hop service matching indication information is used to indicate that the service matching response message is used to respond to the relayed service discovery message.
  • an embodiment of the present invention provides a service discovery device, where the service discovery device is a second NAN device, including: a receiving unit, a sending unit, and a processing unit, where
  • the receiving unit is configured to receive a first service discovery message sent by the first NAN device for service discovery, where the first service discovery message includes first service identification information and first service relay indication information, where a service identification information is used to indicate a service subscribed or issued by the first service discovery message, where the first service relay indication information is used to indicate the number of times the service discovery has been transferred;
  • the processing unit is configured to generate and control the sending unit according to the first service discovery message when the service discovery device transits the service relay device for the service discovery initiated by the first NAN device Sending a second service discovery message for the service discovery, where the second service discovery message includes second service identification information and second service relay indication information;
  • the generating the second service discovery message according to the first service discovery message includes:
  • the first service discovery message further includes a maximum hop count, where the maximum hop count is used to indicate a maximum number of times the service discovery is allowed to be transited;
  • the processing unit is specifically configured to:
  • the second service discovery message further includes the maximum hop count.
  • the first service relay indication information is One hop count
  • the second service relay indication information is a second hop count
  • the processing unit is further configured to:
  • the first service discovery message further includes a transit Effective time
  • the processing unit is also configured to:
  • the sending unit is controlled to cancel sending the second service discovery message.
  • the embodiment of the present invention provides a service discovery device, where the service discovery device is a third NAN device, for example, the service discovery device may be the third NAN device in the embodiment of the second aspect,
  • the method includes: a receiving unit, a sending unit, and a processing unit, where
  • the receiving unit is configured to receive a second service discovery message for service discovery sent by the second NAN device, where the second service discovery message includes second service identification information and second service relay indication information, where The second service identification information is used to indicate the service corresponding to the second service discovery message, the second service relay indication information is used to indicate the number of times the service discovery has been transferred, and the second service discovery message is the
  • the second NAN device serves as a service relay device that transits the service discovery initiated by the first NAN device, according to the first a service discovery message is generated and sent;
  • the first service discovery message includes first service identification information and first service relay indication information, where the first service identification information is used to indicate that the first service discovery message is subscribed or released.
  • Service the first service relay indication information is used to indicate the number of times the service discovery has been transferred; wherein the first service identifier Information and the second service identification information is not identical;
  • the processing unit is configured to, when determining, according to the second service identification information and the second service relay indication information, a service that the first NAN device subscribes to or publishes by the service discovery and a service of the service discovery device When the requirements match, the sending unit is controlled to send a service matching response message to the second NAN device.
  • the processing unit is further configured to: determine, according to the second service relay indication information, that the second service discovery message is a transited service discovery message.
  • the processing unit is configured to: obtain, according to the second service identifier information, the second service relay indication information a third service identification information, where the third service identification information is used to indicate a service that the first NAN device subscribes to or publishes, and determines whether the third service identification information and the service corresponding to the service requirement of the third NAN device are match.
  • the processing unit is configured to: generate, according to the second service relay indication information, a service corresponding to a service requirement of the service discovery device to generate fourth service identifier information.
  • the fourth service identifier information is used to indicate a service corresponding to the service requirement of the service discovery device, and determines whether the fourth service identifier information and the second service identifier information match.
  • the processing unit is configured to: determine, according to the second service relay indication information, that the service discovery has been transited The number is greater than zero.
  • the processing unit is specifically configured to:
  • the control sending unit sends an SDF Publish service release message to the second NAN device;
  • the sending unit is controlled to send an SDF Follow-up service subsequent message to the second NAN device.
  • the SDF Publish service advertisement message sent to the second NAN device carries multi-hop service matching indication information, or The multi-hop service matching indication information is carried in the SDF Follow-up service subsequent message sent to the second NAN device, where the multi-hop service matching indication information is used to indicate that the service matching response message is used to respond Transit service discovery message.
  • the embodiment of the present invention provides a service discovery device, where the service discovery device is a second NAN device, for example, the service discovery device may be the second NAN device in the embodiment of the third aspect,
  • the method includes: a receiving unit, a sending unit, and a processing unit, where
  • the receiving unit is configured to receive a service sent by the first NAN device for service
  • the first service discovery message includes first service identification information, where the first service identification information is used to indicate service information subscribed or published by the first service discovery message;
  • the processing unit is configured to generate and control the sending unit according to the first service discovery message when the service discovery device transits the service relay device for the service discovery initiated by the first NAN device Transmitting a second service discovery message for the service discovery;
  • the generating the second service discovery message according to the first service discovery message includes:
  • the second service discovery message includes the second service identifier information and service multi-hop indication information, where the second service identifier information is used to indicate The service information that is subscribed to or published by the second service discovery message, where the second service identifier information is not equal to the first service identifier information, where the service multi-hop indication information is used to indicate that the second service discovery message is used for Transit the service discovery.
  • the first service discovery message further includes a transit validity time; the processing unit is further configured to: when the first service discovery message is received, start a timer And when the timer time is greater than or equal to the transit effective time, controlling the sending unit to cancel sending the second service discovery message.
  • the embodiment of the present invention provides a service discovery device, where the service discovery device is a third NAN device, for example, the service discovery device may be the third NAN device in the embodiment of the fourth aspect,
  • the method includes: a receiving unit, a sending unit, and a processing unit, where
  • the receiving unit is configured to receive a second service discovery message for service discovery sent by the second NAN device, where the second service discovery message includes second service identification information and service multi-hop indication information, the second The service identifier information is used to indicate the service information that the second service discovery message is subscribed to or published; the service multi-hop indication information is used to indicate that the second service discovery message is used to transit the service discovery; the second service The discovery message is sent by the second NAN device to the first NAN device for sending After the first service discovery message of the service discovery, the service relay device that transits the service discovery initiated by the first NAN device is generated and sent according to the first service discovery message; the first service The discovery message includes first service identification information, where the first service identification information is used to indicate service information subscribed or published by the first service discovery message; the second service identification information is not equal to the first service identification information. ;
  • the processing unit is configured to: when determining, according to the service multi-hop indication information, that the second service discovery is used to transit the service discovery, determining, according to the second service identification information, the first NAN device subscription or Whether the published service matches the service requirement of the service discovery device, and when the service subscribed or issued by the first NAN device is determined to match the service requirement of the service discovery device, the sending unit is controlled to the second NAN The device sends a service match response message.
  • the processing unit is specifically configured to:
  • the third service identification information is used to indicate a service corresponding to the service requirement of the service discovery device.
  • the processing unit is specifically configured to:
  • the processing unit is specifically configured to:
  • the sending unit When the second service discovery message is an SDF Subscribe service subscription message, the sending unit is controlled to send an SDF Publish service release to the second NAN device. And, when the second service discovery message is a SDF Publish service release message, controlling the sending unit to send an SDF Follow-up service subsequent message to the second NAN device.
  • the SDF Publish service advertisement message sent to the second NAN device carries multi-hop service matching indication information
  • the SDF follow-up service subsequent message sent by the second NAN device carries the multi-hop service matching indication information, where the multi-hop service matching indication information is used to indicate that the service matching response message is used to respond to the transit service discovery. Message.
  • an embodiment of the present invention provides a service discovery device, where the service discovery device is a second NAN device, for example, the service discovery device may be the second NAN device in the embodiment of the fifth aspect. , comprising: a receiving unit, a sending unit, and a processing unit, wherein
  • the receiving unit is configured to receive a first service discovery message sent by the first NAN device for service discovery, where the first service discovery message includes first service control type information and first service identification information, where A service identification information is used to indicate a service that is subscribed to or published by the first service discovery message, where the first service control type information is used to indicate a control type of a service to which the first service discovery message is subscribed or published;
  • the processing unit is configured to generate and control the sending unit according to the first service discovery message when the service discovery device transits the service relay device for the service discovery initiated by the first NAN device Sending a second service discovery message for the service discovery, the second service discovery message includes second service control type information and the first service identification information, and the second service control type information is used to indicate the The second service discovery message is corresponding to the control type of the subscribed or published service, the second service control type information is different from the first service control type information, and the first service identification information is used to indicate the first NAN device. Perform the service discovery subscription or release of the service.
  • the first service control type The information includes subscribing to Subscribe or publishing Publish or subsequent Follow-up, the second service control type information including other types, the other types being different from subscription, release or follow-up.
  • the first service control type information includes 00 or 01 or 10
  • the second service control type information includes 11.
  • the first service discovery message further includes service relay indication information; the processing unit is specifically configured to:
  • the sending unit When it is determined that the service discovery is transited according to the service relay indication information, the sending unit is generated and controlled to send the second service discovery message.
  • the service relay indication information includes a first hop count and a maximum hop count, where the first hop count is used to indicate the The number of times the service discovery corresponding to the first service discovery message has been transferred, and the maximum hop count is used to indicate the maximum number of times the service discovery is allowed to be transferred;
  • the processing unit is specifically configured to: when the first hop count is less than the maximum hop count, determine to transit the service discovery.
  • the second service discovery message further includes a second hop count, where the second hop count is used to indicate the second The number of times the service discovery corresponding to the service discovery message has been transferred.
  • the processing unit is further configured to:
  • the second service control type information is obtained, and the second hop count is generated according to the first hop count, where the second hop count is greater than zero;
  • the second hop count is generated according to the first hop count, wherein the second hop count is greater than or equal to the first hop count.
  • the first service discovery message also includes the transit effective time
  • the processing unit is also configured to:
  • the timer is started, when the timer is large And at or equal to the transit effective time, controlling the sending unit to cancel sending the second service discovery message.
  • the receiving unit is further configured for:
  • the third NAN device Receiving, by the third NAN device, a third service discovery message, where the third NAN device is a NAN device that responds to the second service discovery message, where the third service discovery message includes third service control type information, where The third service control type information is used to indicate a control type of the service corresponding to the service requirement of the third NAN device;
  • the processing unit is also configured to:
  • the sending unit is controlled to send a fourth service discovery message to the third NAN device,
  • the fourth service discovery message is used to indicate to the third NAN device that the third service control type matches a control type of a service that the first NAN device performs the service discovery subscription or release.
  • the embodiment of the present invention provides a service discovery device, where the service discovery device is a third NAN device, for example, the service discovery device may be the third NAN device in the embodiment of the sixth aspect. , comprising: a receiving unit, a sending unit, and a processing unit, wherein
  • the receiving unit is configured to receive a second service discovery message for service discovery sent by the second NAN device, where the second service discovery message includes second service control type information and first service identification information, where The second service control type information is used to indicate a control type of the service to which the second service discovery message is subscribed or published, and the first service identification information is used to indicate that the first NAN device performs the service that the service discovery subscribes to or publishes.
  • the second service discovery message After the second NAN device receives the first service discovery message for the service discovery sent by the first NAN device, the second service discovery message is used as the service initiated by the first NAN device.
  • the first service discovery message And discovering, by the first service discovery message, the first service discovery message and the first service identification information, where the first service control message is generated, and the first service discovery message includes the first service control type information and the first service identification information, where the first service control
  • the system type information is used to indicate a control type of a service to which the first service discovery message is subscribed or published; the second service control type information is different from the first service control type information;
  • the processing unit is configured to: when determining that the second service discovery message is a transited service discovery message according to the second service control type information, determining, according to the first service identification information, that the first NAN device performs The service finds whether the service subscribed or published matches the service corresponding to the service requirement of the service discovery device, and determines that the first NAN device performs the service discovery or the service subscribed or published and the service discovery device When the service corresponding to the service requirement matches, the sending unit is controlled to send a service matching response message to the second NAN device.
  • the processing unit is specifically configured to: when determining that the second service control type is not any one of a subscription, a release, or a follow-up, determining the The second service discovery message is a transited service discovery message.
  • the second service discovery message further includes the first service control type information
  • the processing unit is specifically configured to:
  • the service requirement of the service discovery device is capable of providing the service indicated by the first service identification information
  • determining that the first NAN device performs the service discovery subscription or The published service matches the service corresponding to the service requirement of the service discovery device, when the first service control type information is published, and the service requirement of the service discovery device needs to use the service indicated by the first service identification information
  • the processing unit is specifically configured to:
  • the processing unit is specifically configured in the fourth possible implementation manner. for:
  • Controlling the sending unit to send a third service discovery message to the second NAN device, where the third service discovery message includes third service control type information, where the third service control type information is used to indicate the service discovery device
  • the service type corresponds to the type of control of the service.
  • the receiving unit is further configured to :
  • the processing unit is specifically configured to:
  • the service matching response message carries The multi-hop service matching indication information is used to indicate that the service matching response message is used to respond to the relayed service discovery message.
  • an embodiment of the present invention provides a service discovery device, where the service discovery device is a second NAN device, for example, the service discovery device may be the second NAN device in the embodiment of the first aspect.
  • the method includes: a processor, an interface circuit, a memory, and a bus, wherein the processor, the interface circuit, and the memory are connected through the bus and complete each other
  • the processor is configured to receive, by using the interface circuit, a first service discovery message sent by the first NAN device for service discovery, where the first service discovery message includes the first service identifier information and the first service relay Instructing information, the first service identification information is used to indicate a service that the first service discovery message is subscribed to or published, and the first service relay indication information is used to indicate the number of times the service discovery has been transferred;
  • the processor is further configured to generate, according to the first service discovery message, and send by using the interface circuit, when the service discovery device transits the service relay device that is initiated by the service discovery by the first NAN device a second service discovery message for the service discovery, where the second service discovery message includes second service identification information and second service relay indication information;
  • the generating the second service discovery message according to the first service discovery message includes:
  • the first service discovery message further includes a maximum hop count, where the maximum hop count is used to indicate a maximum number of times the service discovery is allowed to be transited;
  • the processor is specifically configured to: when determining, according to the first service relay indication information, that the number of times the service discovery has been transferred is less than the maximum hop count, generating, according to the first service discovery message, the service The second service discovery message found.
  • the second service discovery message further includes the maximum hop count.
  • the first service relay indication The information is the first hop count
  • the second service relay indication information is the second hop count
  • the first hop count is equal to zero, generating second service identifier information according to the first service identifier information, and generating the second hop count according to the first hop count, where the second hop count is greater than zero, when When the first hop count is greater than zero, the second service identifier information is generated according to the first service identifier information, and the second hop count is generated according to the first hop count, where the second hop count Greater than or equal to the first hop count.
  • the third service implementation in the fourth possible implementation, the first service discovery message Also includes the transit effective time;
  • the processor is further configured to:
  • the timer is started; when the timer time is greater than or equal to the transit effective time, the second service discovery message is cancelled.
  • the embodiment of the present invention provides a service discovery device, where the service discovery device is a third NAN device, for example, the service discovery device may be the third NAN device in the embodiment of the second aspect.
  • the method includes: a processor, an interface circuit, a memory, and a bus, wherein the processor, the interface circuit, and the memory are connected through the bus and complete communication with each other;
  • the processor is configured to receive, by the interface circuit, a second service discovery message sent by the second NAN device for service discovery, where the second service discovery message includes second service identification information and second service relay indication information
  • the second service identifier information is used to indicate a service corresponding to the second service discovery message, where the second service relay indication information is used to indicate the number of times the service discovery has been transferred, and the second service discovery message
  • the service discovery device receives the first service discovery message for the service discovery sent by the first NAN device, the service relay device that transits the service discovery initiated by the first NAN device, according to The first service discovery message is generated and sent;
  • the first service discovery message includes first service identification information and first service relay indication information, and the first service identification information is used to indicate the first service discovery message a subscribed or published service, the first service relay indication information is used to indicate the The number of times the service discovery has been transferred; wherein the first service identification information is different from the second service identification information;
  • the processor is further configured to: when determining, according to the second service identification information and the second service relay indication information, a service that the first NAN device subscribes to or publishes by the service discovery and a service of the service discovery device When the requirements match, the service matching response message is sent to the second NAN device through the interface circuit.
  • the processor is further configured to:
  • the processor is specifically configured to:
  • third service identifier information Determining, according to the second service identifier information and the second service relay indication information, third service identifier information, where the third service identifier information is used to indicate a service that the first NAN device subscribes to or publishes, determining the first Whether the three service identification information matches the service corresponding to the service requirement of the third NAN device.
  • the processor is specifically configured to:
  • the processor is configured to: determine, according to the second service relay indication information, the number of times the service discovery has been transferred Greater than zero.
  • the processor is specifically configured to:
  • the SDF Publish service advertisement message sent to the second NAN device carries multi-hop service matching indication information
  • the SDF follow-up service subsequent message sent to the second NAN device carries the multi-hop service matching indication information; wherein the multi-hop service matching indication information is used to indicate that the service matching response message is used to respond Transit service discovery message.
  • an embodiment of the present invention provides a service discovery device, where the service discovery device is a second NAN device, for example, the service discovery device may be the second NAN device in the embodiment of the third aspect.
  • the method includes: a processor, an interface circuit, a memory, and a bus, wherein the processor, the interface circuit, and the memory are connected through the bus and complete communication with each other;
  • the processor is configured to receive, by using the interface circuit, a first service discovery message for service discovery sent by the first NAN device, where the first service discovery message includes first service identifier information, the first service identifier The information is used to indicate service information subscribed or published by the first service discovery message;
  • the processor is further configured to generate, according to the first service discovery message, and send by using the interface circuit, when the service discovery device transits the service relay device that is initiated by the service discovery by the first NAN device a second service discovery message for the service discovery;
  • the generating the second service discovery message according to the first service discovery message includes: generating the second service identifier information according to the first service identifier information, where the second service discovery message includes the first The second service identification information and the service multi-hop indication information, the second service identification information is used to indicate the service information subscribed or issued by the second service discovery message, the second service identification information and the first service identification information
  • the service multi-hop indication information is used to indicate that the second service discovery message is used to transit the service discovery.
  • the first service discovery message further includes a transit validity time; the processor is further configured to: receive, by using the interface circuit When the first service discovery message is described, a timer is started, and when the timer time is greater than or equal to the transit validity time, the second service discovery message is cancelled.
  • an embodiment of the present invention provides a service discovery device, where the service discovery device is a third NAN device, for example, the service discovery device may be a third NAN device in the embodiment of the fourth aspect.
  • the method includes: a processor, an interface circuit, a memory, and a bus, wherein the processor, the interface circuit, and the memory are connected through the bus and complete communication with each other;
  • the processor is configured to receive, by the interface circuit, a second service discovery message for service discovery sent by the second NAN device, where the second service discovery message includes second service identifier information and service multi-hop indication information, where The second service identification information is used to indicate the service information that the second service discovery message is subscribed to or published; the service multi-hop indication information is used to indicate that the second service discovery message is used to transit the service discovery; Transmitting, by the service discovery device, the service discovery device, after receiving the first service discovery message for the service discovery sent by the first NAN device, as the service discovery initiated by the first NAN device
  • the service relay device is generated and sent according to the first service discovery message; the first service discovery message includes first service identification information, where the first service identification information is used to indicate that the first service discovery message is subscribed or The published service information; the second service identification information is not equal to the first service identification information;
  • the processor is further configured to: when determining, according to the serving multi-hop indication information, that the second service discovery is used to transit the service discovery, determining, according to the second service identification information, the first NAN device subscription or Whether the published service matches the service requirement of the service discovery device, and when it is determined that the service subscribed or issued by the first NAN device matches the service requirement of the service discovery device, to the second NAN through the interface circuit
  • the device sends a service match response message.
  • the processor is specifically configured to:
  • the third service identification information is used to indicate a service corresponding to the service requirement of the service discovery device.
  • the processor is specifically configured to:
  • the processor is specifically used to Transmitting, by the interface circuit, an SDF Publish service release message to the second NAN device when the second service discovery message is an SDF Subscribe service subscription message, and when the second service discovery message is an SDF Publish service release message And sending, by the interface circuit, an SDF Follow-up service subsequent message to the second NAN device.
  • the SDF Publish service advertisement message sent to the second NAN device carries multi-hop service matching indication information
  • the SDF follow-up service subsequent message sent by the second NAN device carries the multi-hop service matching indication information, where the multi-hop service matching indication information is used to indicate that the service matching response message is used to respond to the transit service discovery. Message.
  • the embodiment of the present invention provides a service discovery device, where the service discovery device is a second NAN device, for example, the service discovery device may be the second NAN device in the embodiment of the fifth aspect.
  • the method includes: a processor, an interface circuit, a memory, and a bus, wherein the processor, the interface circuit, and the memory are connected through the bus and complete communication with each other;
  • the processor is configured to receive, by using the interface circuit, a first service discovery message sent by the first NAN device for service discovery, where the first service discovery message includes first service control type information and first service identification information.
  • the first service identifier information is used to indicate a service that is subscribed to or published by the first service discovery message, where the first service control type information is used to indicate that the first service discovery message is subscribed or published.
  • the processor is further configured to generate, according to the first service discovery message, and send by using the interface circuit, when the service discovery device transits the service relay device that is initiated by the service discovery by the first NAN device a second service discovery message for the service discovery, the second service discovery message includes second service control type information and the first service identification information, and the second service control type information is used to indicate the The second service discovery message is different from the first service control type information, and the first service identification information is used to indicate that the first NAN device performs the control.
  • the service discovers a subscription or published service.
  • the first service control type information includes subscribing Subscribe or publishing Publish or subsequent Follow-up
  • the second service control type information includes other types, and the other The type is different from subscription, release, or follow-up.
  • the first service control type information includes 00 or 01 or 10
  • the second service control type information includes 11.
  • the first service discovery message further includes service relay indication information
  • the processor is specifically configured to: when the service forwarding discovery is determined according to the service relay indication information And generating, by the interface circuit, the second service discovery message.
  • the service relay indication information includes a first hop count and a maximum hop count, where the first hop count is used to indicate the The number of times the service discovery corresponding to the first service discovery message has been transferred, and the maximum hop count is used to indicate the maximum number of times the service discovery is allowed to be transferred;
  • the processor is specifically configured to: when the first hop count is less than the maximum hop count, determine to transit the service discovery.
  • the second service discovery message further includes a second hop count, where the second hop count is used to indicate the second The number of times the service discovery corresponding to the service discovery message has been transferred.
  • the processor is further configured to:
  • the second service control type information is obtained, and the second hop count is generated according to the first hop count, where the second hop count is greater than zero;
  • the second hop count is generated according to the first hop count, wherein the second hop count is greater than or equal to the first hop count.
  • the first service discovery message The processor is further configured to: when the first service discovery message is received by the interface circuit, start a timer, and when the timer time is greater than or equal to the transit effective time, cancel the sending The second service discovery message.
  • the processor is further used Receiving, by the interface circuit, a third service discovery message sent by the third NAN device, where the third NAN device is a NAN device that responds to the second service discovery message, where the third service discovery message includes a third service control Type information, the third service control type information is used to indicate a control type of a service corresponding to a service requirement of the third NAN device; and when determining that the first NAN device performs a service that the service discovery subscribes to or publishes When the control type matches the third service control type, the fourth service discovery message is sent to the third NAN device by the interface circuit, where the fourth service discovery message is used to indicate the third NAN device The three service control type matches a control type of the service that the first NAN device performs the service discovery subscription or release.
  • the embodiment of the present invention provides a service discovery device, where the service discovery device is a third NAN device, for example, the service discovery device may be the third NAN device in the embodiment of the sixth aspect.
  • the method includes: a processor, an interface circuit, a memory, and a bus, wherein the processor, the interface circuit, and the memory are connected through the bus and complete communication with each other;
  • the processor configured to receive, by using the interface circuit, a second NAN device a second service discovery message for service discovery, the second service discovery message includes second service control type information and first service identification information, and the second service control type information is used to indicate the second service discovery message a control type of the subscribed or published service, the first service identification information is used to instruct the first NAN device to perform a service subscribed or published by the service discovery, and the second service discovery message is received by the service discovery device After the first service discovery message for the service discovery sent by the first NAN device, the service relay device that transits the service discovery initiated by the first NAN device, according to the first service discovery message Generating and transmitting; the first service discovery message includes first service control type information and the first service identification information, where the first service control type information is used to indicate that the first service discovery message is subscribed or published a control type of the service; the second service control type information is different from the first service control type information;
  • the processor is further configured to: when determining that the second service discovery message is a transited service discovery message according to the second service control type information, determining, according to the first service identification information, that the first NAN device performs Determining whether the service subscribed or published matches the service corresponding to the service requirement of the service discovery device, and determines that the first NAN device performs the service discovery or the service subscribed to or published by the service discovery device.
  • the service matching response message is sent to the second NAN device through the interface circuit.
  • the processor is specifically configured to:
  • the second service control type is not any one of a subscription, a release, or a follow-up, determining that the second service discovery message is a transited service discovery message.
  • the second service discovery message further includes the first service control type information
  • the processor is specifically configured to: when the first service control type information is a subscription, and the service requirement of the service discovery device can provide the service indicated by the first service identification information, determine the first NAN device Performing, by the service discovery, that the service subscribed or published matches the service corresponding to the service requirement of the service discovery device, when the first service control type information is published, and the service requirement of the service discovery device is required
  • the service indicated by the first service identification information it is determined that the service subscribed or issued by the first NAN device for the service discovery matches the service corresponding to the service requirement of the service discovery device.
  • the processor is specifically configured to: generate a fifth service identifier information according to a service corresponding to a service requirement of the service discovery device,
  • the fifth service identifier information is used to indicate a service corresponding to the service requirement of the third NAN device, and when the first service identifier information matches the fifth service identifier information, determining that the first NAN device performs The service finds that the subscribed or published service matches the service corresponding to the service discovery device's service requirements.
  • the processor is specifically configured to: Transmitting, by the interface circuit, a third service discovery message to the second NAN device, where the third service discovery message includes third service control type information, where the third service control type information is used to indicate the service discovery device
  • the service type corresponds to the type of control of the service.
  • the processor is further configured to: Receiving, by the interface circuit, a fifth service discovery message sent by the second NAN device, where the fifth service discovery message includes the first service control type information, when the first service control type information is a subscription, and
  • the service request of the third NAN device can provide the service indicated by the second service identification information, and then determine that the service subscribed by the first NAN device matches the service requirement of the third NAN device, when the first Determining, by the third NAN device, the service indicated by the second NAN device, and determining the service requirement of the third NAN device and the third NAN device match.
  • the service matching response message carries Multi-hop service matching indication information, where the multi-hop service matching indication information is used
  • the service discovery message indicating that the service matching response message is used to respond to the relay.
  • the service discovery method, the device, and the service discovery device provided by the embodiment of the present invention can match the service subscribed or issued by the first NAN device for service discovery with the service requirement of the third NAN device, and according to the first NAN when the matching is successful.
  • the device responds with a service discovery subscription or published service.
  • the NAN device that does not support multi-hop service discovery does not respond to the transited multi-hop service discovery message on the premise that the transited service discovery message is correctly received by the NAN device that supports the multi-hop service discovery.
  • FIG. 1 is a schematic structural diagram of a NAN network according to an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of a NAN network device service discovery method according to an embodiment of the present invention
  • FIG. 3 is a schematic structural diagram of a NAN network according to another embodiment of the present invention.
  • FIG. 4 is a schematic flowchart of a NAN network device service discovery method according to another embodiment of the present invention.
  • FIG. 5 is a schematic flowchart of a NAN network device service discovery method according to another embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of a NAN network according to another embodiment of the present invention.
  • FIG. 7 is a schematic flowchart of a service discovery method according to an embodiment of the present invention.
  • FIG. 8 is a schematic flowchart of a service discovery method according to another embodiment of the present invention.
  • FIG. 9 is a schematic flowchart of a service discovery method according to another embodiment of the present invention.
  • FIG. 10 is a schematic flowchart of a service discovery method according to another embodiment of the present invention.
  • FIG. 11 is a schematic flowchart of a service discovery method according to another embodiment of the present invention.
  • FIG. 12 is a schematic flowchart of a service discovery method according to another embodiment of the present invention.
  • FIG. 13 is a schematic structural diagram of a service discovery apparatus according to an embodiment of the present invention.
  • FIG. 13B is a schematic structural diagram of another service discovery apparatus according to another embodiment of the present invention.
  • FIG. 13C is a schematic structural diagram of a service discovery apparatus according to another embodiment of the present invention.
  • the words “first”, “second” and the like are used to distinguish the same or similar items whose functions and functions are substantially the same, in the field.
  • the skilled person will understand that the words “first” and “second” are not intended to limit the number and order of execution.
  • a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread in execution, a program, and/or a computer.
  • an application running on a computing device and the computing device can be a component.
  • One or more components can reside within a process and/or thread of execution, and a component can be located in a computer and/or distributed between two or more computers. Moreover, these components can execute from various computer readable media having various data structures thereon.
  • a component may pass, for example, by interacting with another component in a local system, a distributed system, and/or signalling through, for example, the Internet, based on data having one or more data packets (eg, from one component)
  • the network interacts with other systems to communicate in a local and/or remote process.
  • a wireless network device which may be a base station, which may be used to communicate with one or more user devices, or may be used with one or more functions having partial user devices.
  • the base station performs communication (such as communication between the macro base station and the micro base station, such as an access point);
  • the wireless network device can also be a user equipment, and the user equipment can be used for communication by one or more user equipments (such as D2D communication). It can also be used to communicate with one or more base stations.
  • User equipment may also be referred to as user terminals and may include systems, subscriber units, subscriber stations, mobile stations, mobile wireless terminals, mobile devices, nodes, devices, remote stations, remote terminals, terminals, wireless communication devices, wireless communication devices, or Some or all of the features of the user agent.
  • the user equipment can be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a smart phone, a wireless local loop (WLL) station, a personal digital assistant (personal digital assistant, Abbreviations: PDA), laptop computers, handheld communication devices, handheld computing devices, satellite wireless devices, wireless modem cards, and/or other processing devices for communicating over wireless systems.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • a base station may also be referred to as an access point, a node, a Node B, an evolved Node B (eNB), or some other network entity, and may include some or all of the functions of the above network entities.
  • the base station can communicate with the wireless terminal over the air interface. This communication can be done by one or more sectors.
  • the base station can act as a router between the wireless terminal and the rest of the access network by converting the received air interface frame to an IP packet, wherein the access network includes an internet protocol (IP) network .
  • IP internet protocol
  • the base station can also coordinate the management of air interface attributes and can also be a gateway between the wired network and the wireless network.
  • the application will present various aspects, embodiments, or features in a system that can include multiple devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules, etc. discussed in connection with the figures. In addition, a combination of these schemes can also be used.
  • the word "exemplary” is used to mean an example, an illustration, or a description. Any embodiment or design described as “example” in this application should not be construed as preferred or advantageous over other embodiments or designs. Rather, the term use examples is intended to present concepts in a concrete manner.
  • information, signal, message, and channel may sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the difference is not emphasized. “of”, “corresponding (relevant)” and “corresponding” can sometimes be mixed. It should be noted that the meaning to be expressed is consistent when the distinction is not emphasized.
  • the network architecture and the service scenario described in the embodiments of the present invention are used to more clearly illustrate the technical solutions of the embodiments of the present invention, and do not constitute a limitation of the technical solutions provided by the embodiments of the present invention.
  • the technical solutions provided by the embodiments of the present invention are equally applicable to similar technical problems.
  • the embodiment of the present invention can be applied to a scenario of time division duplexing (TDD) or a frequency division duplexing (FDD) scenario.
  • TDD time division duplexing
  • FDD frequency division duplexing
  • the embodiment of the present invention is described in the context of a 4G network in a wireless communication network. It should be noted that the solution in the embodiment of the present invention may also be applied to other wireless communication networks, and the corresponding names may also be used in other wireless communication networks. Replace the name of the corresponding function.
  • Wi-Fi Wireless-Fidelity
  • Wi-Fi Wireless-Fidelity
  • Wi-Fi Wireless-Fidelity
  • DW NAN-disclosed discovery window
  • a NAN network composed of multiple NAN devices is called a NAN cluster, and is in the same NAN cluster.
  • Devices have the same cluster identity, and each device has its own attributes, including: Role and State.
  • the role includes two types: the master device and the non-master device.
  • the state includes two types: Synchronization (Sync: Sync) and Non-Synchronization (Non-Sync).
  • the Sync state device is responsible for maintaining cluster synchronization.
  • the Master must be in the Sync state, while the non-Master can be in the Sync or non-Sync state.
  • Each device also includes a master device (Master Rank, MR for short).
  • the master with the largest MR in the NAN cluster becomes the anchor master (AM), and all other devices are synchronized with the AM. This ensures synchronization of the entire NAN cluster.
  • a typical application scenario in a NAN cluster is to perform mutual service discovery between devices before association.
  • devices in the NAN cluster In order to enable service discovery between devices, devices in the NAN cluster must be synchronized, so that devices in the NAN cluster work on the NAN discovery channel for a certain period of time and remain in an awake state, for example, NAN discovery.
  • the channel is channel 6.
  • the device wakes up only when the DW arrives, and performs service discovery and cluster synchronization on the discovery channel. Outside the DW, other devices except the master device can be in a dormant state.
  • the device in the NAN network can notify the other NAN devices in the NAN network of the change of the state of the device in the other NAN network by sending a Service Descriptor Frame (SDF) message in the DW.
  • SDF Service Descriptor Frame
  • the subscribed or published service further further confirms the information of the data link of the subsequent establishment of the interactive service data by interacting with the service discovery message with some NAN devices.
  • the information carried in the service discovery message may include two aspects: one is information indicating the service, and may be indicated by the service identifier or the service name; the other is to indicate the demand for the service, which may be discovered through the service.
  • the service control type of the message is embodied.
  • the control type of the service carried by the service discovery message may be SDF Publish, SDF Subscribe, and service follow-up (SDF Follow- Up).
  • SDF Publish For a NAN device that receives a service discovery message, the service matching can be confirmed only if the above two aspects of the information can be matched. Specifically, when a NAN device can provide the service indicated by the NAN device, and send a service publishing message, the NAN device can confirm that the service matching is successful after the NAN device that needs to use the service receives the service publishing message, so that further data can be established.
  • the NAN device of the service does not respond to the service release message; the service query message indicates that the NAN device needs to use the service indicated by the NAN device, and the NAN device capable of providing the service can receive the service subscription message by sending a service subscription message. Confirm that the service matches, so that a further data connection can be established to interact with the service data subscribed or published by the service, and the NAN device that needs to use the service also does not respond, and the device that receives the service discovery message can serve according to the service discovery message.
  • the subscription or published service is found to match the service provided or required by itself. When the matching is successful, the device receiving the service discovery message responds to the device that sends the service discovery message.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • An embodiment of the present invention provides a NAN network device service discovery method.
  • the NAN network includes a service originating NAN device 101 and a first service response device 102, and the method includes:
  • the service initiating NAN device sends a service discovery message.
  • the service initiating NAN device sends a service discovery message according to the service that is subscribed or published by the service.
  • the service discovery message includes the information of the service that the service initiates the NAN device subscription or the published service.
  • the service discovery message carries the indication service to initiate the NAN device subscription or release.
  • the matching identifier of the service, the service initiating NAN device broadcasts the service discovery message, and the first service response device in the signal coverage range of the service initiating NAN device may receive the service discovery message.
  • the first service response device receives the service discovery message and performs matching according to the service discovery message.
  • the first service response device matches the service that the NAN device subscribes to or publishes according to the service discovery message in the service discovery message, and matches the service that it needs or can provide.
  • the first service response device sends a service response message to the service initiation NAN device, and responds to the service initiation NAN device.
  • the transmission distance can only be limited to 0 to 100 meters due to the limitation of the WiFi technology, and cannot be applied well in some large-scale scenarios. For example, in large shopping malls and stadiums, the application of NAN can only be limited to users in one area due to the transmission distance limited by WiFi. Therefore further consideration
  • the NAN device supports a multi-hop NAN data link.
  • an embodiment of the present invention provides a NAN network in which a service initiates a NAN device (also referred to herein as a first NAN device) 101, a service relay NAN device (also referred to herein as a second NAN).
  • the device 103, the second service response device 104 supports multi-hop service discovery (also referred to herein as a third NAN device), and the third service response device 105 only supports single-hop service discovery.
  • an embodiment of the present invention provides a multi-hop service discovery method for a service-initiated NAN device 101, a service-transferred NAN device 103, and a second service response device 104.
  • the method includes:
  • the service initiating NAN device sends a service discovery message.
  • the first NAN device sends a service discovery message according to the service subscribed or published by itself, and the service discovery message includes information that the first NAN device subscribes or publishes the service. For details, refer to step 201 above, and details are not described herein again.
  • the service transit NAN device relays the service discovery message to the second service response device according to the received service discovery message.
  • the second service response device performs matching according to the service discovery message.
  • the second service response device matches the service that the NAN device subscribes to or publishes the service according to the service discovery message in the service discovery message.
  • the matching is successful, the following step 207 is performed.
  • the second service response device sends a service response message to the service-initiating NAN device to the service-transferring NAN device, and responds to the service-initiating NAN device.
  • the service relaying NAN device forwards the service response message to the service originating NAN device.
  • the service relay NAN device and the second service response device supporting the multi-hop service discovery may determine whether the message is a single-hop service discovery message or a multi-hop service discovery message according to the received service discovery message.
  • the service discovery message needs to be forwarded, it forwards the message, and when the service discovery message matches the service that it needs or can provide, the service forwarding NAN device sends the service-initiating NAN device to the service forwarding message.
  • Service response message enabling the service relay NAN device to forward the service to the service originating NAN device
  • the service response message enables the service initiating NAN device to receive a response from the second service response device.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the NAN device 101, the service relay NAN device 103, and the third service response device 105 are provided for the service.
  • the embodiment of the present invention provides a method for service discovery of devices in a NAN network. , the method includes:
  • the service initiates the NAN device to send a service discovery message.
  • the service initiating NAN device sends a service discovery message according to the service subscribed or published by itself, and the service discovery message includes information that the service initiates the NAN device requirement service.
  • the service relay NAN device receives the service discovery message and relays the service discovery message to the third service response device.
  • the third service response device performs matching according to the service discovery message.
  • the third service response device matches the service that the NAN device subscribes to or publishes the service according to the service discovery message in the service discovery message, and matches the service that it needs or can provide.
  • the matching is successful, the following step 212 is performed.
  • the third service response device sends a service response message to the service relay NAN device to the service relay NAN device, and responds to the service relay NAN device.
  • the third service responding device that only supports the single-hop service discovery, when receiving the transited service discovery message, identifies the transited service discovery message as a single-hop service sent by the serving transit NAN device. The message is discovered, so that the third service responding device matches the transited service discovery message with the service that it needs or can provide. When the matching is successful, the third service responding device regards the service transiting NAN device as the service originating NAN. The device sends a service response message to the service relay NAN device in response to the service relay NAN device.
  • the service relay NAN device Since the service relay NAN device cannot provide the service required by the third service response device, the service relay NAN device does not reply to the response of the third service response device, so that the third service response device responds to the transited multi-hop.
  • the response generated by the service discovery message becomes an invalid response, causing the third service response device and the service relaying NAN device to waste device resources and network resources.
  • the message can be supported by the multi-hop service discovery NAN set.
  • the NAN device that does not support multi-hop service discovery does not respond to the transited multi-hop service discovery message on the premise of correct reception.
  • the embodiment of the present invention uses the service discovery message in the NAN device of the transit service discovery message.
  • the carried service identification information or the service control type information is changed.
  • the service identification information or the service control type information before the change can be obtained according to the service discovery message.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • Embodiments of the present invention are applicable to a communication system as shown in FIG. 6, the communication system including: a first NAN device 301, a second NAN device 302, and a third NAN device 303, wherein the second NAN device 302 and the third NAN
  • the device 303 is a NAN device that supports multi-hop service discovery.
  • the second NAN device 302 and the third NAN device 303 can both forward the service discovery message that needs to be transited to other NAN devices as a transit device, and can also serve as a transit device to other devices.
  • the NAN device provides data link relay. It should be noted that both the second NAN device 302 and the third NAN device 303 can respond to the service discovery message matched thereto.
  • the first NAN device 301 may initiate a NAN device for a service to send a service discovery message for service discovery, ie, to publish its subscription to other devices (also Comprehensible as a service or a published (also understandable to be available) service;
  • the second NAN device 302 acts as a service relay device that relays the service discovery initiated by the first NAN device;
  • a third NAN device 303 is a device that receives the message for the service discovery relayed by the second NAN device 302, and the third NAN device 303 may be a NAN device that supports multi-hop service discovery (such as the second service shown in FIG. Responsive device 104), responsive to a service discovery message that matches it
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • an embodiment of the present invention provides a multi-hop.
  • the service discovery method is applied to the communication system provided by the foregoing embodiment, and the method includes:
  • the second NAN device receives a first service discovery message sent by the first NAN device for service discovery, where the first service discovery message includes the first service identification information and the first service relay indication information.
  • the first service identification information is used to indicate a service corresponding to the first service discovery message (ie, a service that the first service discovery message subscribes to or publishes), and the first service relay indication information is used to indicate that the service discovery has been transferred. frequency.
  • the first service discovery message is used for service discovery, and the first service discovery message is used to notify other NAN devices located in the same NAN network of changes in the state of the device, that is, to inform the first NAN device that the service needs to be subscribed or published. Or the response to the other NAN device is as follows, and further, the first NAN device may further confirm the information of the data link establishing the interactive service data by sending the first service discovery message to the other NAN device.
  • the first NAN device sends a first service discovery message, and the first NAN device can broadcast the first service discovery message in the NAN network where the first NAN device is located, so that the second NAN device is in the second coverage of the signal coverage of the first NAN device.
  • the NAN device may receive the first service discovery message.
  • the first service discovery message may also be sent to the second NAN device in a unicast manner, as long as the second NAN device receives the first service discovery message.
  • the NAN device that receives the first service discovery message may match the service that is published or subscribed to the first service discovery message with the NAN device requirement or the service that can be provided by receiving the first service discovery message according to the first service identification information.
  • the first service identification information may include information of a service carried by the first service discovery message for service discovery subscription or publication.
  • the NAN device that receives the first service discovery message matches the first service discovery message, it needs to match the information of the service that is subscribed to or published by the service discovery and the requirement of the service of the NAN device, that is, the control type of the service.
  • the response is responded according to the received first service discovery message.
  • the service that subscribes to or publishes the service discovery, and the service that can be subscribed to or published by the first NAN device may include a service identifier or a service name; the control type of the service may be a service release, a service subscription, and a service follow-up.
  • the first service relay indication information is used to indicate the number of times the service discovery has been transited, wherein the service discovery may refer to the service that the first NAN device can provide or subscribe through the first service discovery message.
  • the service discovery is transited.
  • the device that sends the first service discovery message may not be the device that can provide or subscribe to the service corresponding to the first service discovery message (also can be understood as the device that generates the first service discovery message).
  • the service discovery message may be sent by a service relay device, where the second NAN device acts as a service relay device that transits the first service discovery message, and the service relay device may be after receiving the service discovery message for service discovery.
  • the service information (such as service identification information, etc.) in the service discovery message may be further spread, or may be further spread after receiving the service discovery message transmitted by the other service relay device.
  • the service information in the relayed service discovery message may be different or the same as the service information in the original service discovery message.
  • a service relay device When a service relay device receives a service discovery message and sends another service discovery message to spread the service information of the received service discovery message for service discovery, it is also said to transit the service discovery.
  • the number of times that the service corresponding to the service information carried in the first service discovery message is transited by the service relay device may also be expressed as the number of times the service discovery has been transferred, for example, if the first service discovery message is generated by the first service discovery message. If the device sends, the number of times the transfer is 0. If the first service discovery message is sent by the first service relay device, the number of times the service discovery corresponding to the first service discovery message is transited is 1.
  • the first service relay indication information may directly indicate that the service discovery corresponding to the first service discovery message is transited, or may indirectly indicate that the service corresponding to the first service discovery message finds transit information, such as the first service discovery message has been The number of transfers.
  • the first service relay indication information is used to indicate the number of times the service discovery has been transferred. It can also be understood that if the service discovery has been transited, and the service discovery indicated by the first service relay indication information has been transferred, The number of times may not exactly match the actual number of times, but through the first service relay indication information, it may already indicate whether the service discovery is transited, that is, whether it is a multi-hop service discovery.
  • the first service relay indication information is a hop count (Hopcount), where the hop count refers to the actual hop count of the NAN device that sends the first service discovery message to the NAN device that generates the first service discovery message, and the hop count is greater than The zero-time first service discovery message is transferred at least once.
  • the second NAN device determines that the number of times the service discovery has been transferred is less than the maximum hop count according to the first service relay indication information, the second NAN device generates a second service discovery message for service discovery according to the first service discovery message to determine the transit service. Find.
  • the service discovery for the service discovery is performed.
  • the number of NAN devices that the message passes on the transmission path may be the number of times the service discovery is transferred; when the NAN device in the NAN network is set to be carried according to the preset rule in the NAN device at the specific location according to the received service discovery message.
  • the information generates another service discovery message, and the number of NAN devices at a specific location through which the service discovery message for the service discovery passes may be the number of times the service discovery has been transferred.
  • the first three relay devices on the service discovery message transmission path sent by the NAN device that generates the service discovery message generate another service discovery message according to the information carried by the respective received service discovery message.
  • the first service identification information may be a service name that is subscribed or published by the service discovery subscription or the published service, or a value obtained by converting the service name subscribed or published by the service, as long as the service is found for the service.
  • the NAN device that responds to the message needs to match the service subscribed or published by the first service discovery message with the service subscribed or published by itself according to the first service identification information.
  • the second NAN device may perform the service discovery subscription or the published service by using the first service discovery message according to the first service identifier information. Matches your own service needs.
  • the service name of the service subscription or the publication is hashed, and the first 48 bit is taken as the first service identification information.
  • the first service identifier information may be directly carried by the first service discovery message, or may be implicitly carried in the first service discovery message.
  • the first service identifier information is a Bloom filter. The form of filter) is implicitly carried in the first service discovery message.
  • the second NAN device acts as a service relay device that transits service discovery initiated by the first NAN device, and generates and sends a second service discovery message for service discovery according to the first service discovery message.
  • the second service discovery message includes second service identification information and second service relay indication information.
  • the generating the second service discovery message according to the first service discovery message includes generating second service identification information according to the first service identification information, and generating second service relay indication information according to the first service relay indication information.
  • the first service identifier information is different from the second service identifier information, where the second service identifier information is used to indicate that the service corresponding to the second service discovery message, that is, the information of the service subscribed or published by the second service discovery message, and the second service relay indication The information is used to indicate the number of times the service discovery has been relayed.
  • the second service identifier information is different from the first service identifier information
  • the NAN device that does not support the multi-hop service discovery receives the service discovery message that includes the second service identifier information
  • the NAN device is configured according to the second service identifier.
  • the service obtained by the information is different from the service obtained according to the first service identification information.
  • the third NAN device in the embodiment of the present invention receives the service discovery message including the second service identification information
  • the third NAN device may obtain the service according to the second service identification information and the second service relay indication information.
  • the service identification information is the same as the service obtained by the first service relay indication information.
  • the third NAN device can obtain the NAN device that generates the service discovery message according to the second service identification information and the second service relay indication information.
  • the NAN device receiving the second service discovery message is a NAN device that does not support multi-hop service discovery, even if the service requirement of the NAN device itself has a service that can be provided or subscribed to by the NAN device that generates the service discovery message.
  • the NAN device cannot match the service that can be provided or subscribed by the NAN device that generates the service discovery message with the service requirement of the NAN device according to the second service identification information, so that the NAN device obtains its own service.
  • the conclusion that the demand does not match the service that the NAN device that generated the service discovery message can provide or subscribe to makes the NAN device not respond.
  • the second service relay indication information is used to indicate the number of times the service discovery has been transferred, and may also be understood as the number of times the service discovery has been transited, and the service discovery indicated by the second service relay indication information has been transferred. May not exactly match the actual number of times, but through the second service relay indication information, it can be determined whether the service discovery indicated by it is transited. Whether it is a multi-hop service discovery.
  • the second service relay indication information is used to indicate the number of times the service is issued, and the number of service delivery relays may be the service release relay indicated by the first service relay indication information.
  • the number of times of the service is increased by one, and the number of times of the service delivery relay indicated by the first service relay indication information may be added to the preset value, as long as the number of times the service delivery relay corresponding to the second service discovery message corresponds to the first service discovery message is The number of service release relays can be increased once.
  • the NAN device that the service is found by the hop service and has the service that matches the service corresponding to the first service discovery message, when receiving the service discovery message carrying the second service identification information, the NAN device sends the second service discovery message according to the second service identification information.
  • the subscribed or published service cannot be successfully matched with the service that the NAN device has or needs, and the NAN device that supports the multi-hop service discovery and has the service matching the service corresponding to the first service discovery message receives the second service identification information.
  • the service discovery message may be generated according to the rule or parameter corresponding to the preset rule or the preset parameter in the second NAN device, and the second service identification information and the second service relay indication information.
  • the first NAN device performs reversible operations such as adding/subtracting/multiplying/dividing the first service identification information and the preset value, or performing operations of inverting, filling, out-of-order, and replacing certain bits, thereby obtaining the first Two service identification information.
  • the service relay device is a device that spreads service information (such as service identification information, etc.) of the NAN device that generates the service discovery message through the transited service discovery message, and may be a dedicated device such as a Proxy device. It can also be implemented for a NAN device in the NAN network that has a relay function by a certain rule, and the present invention is not limited.
  • the second NAN device can broadcast the second service discovery message in the NAN network where the first NAN device is located, so that the third NAN device in the signal coverage of the first NAN device can receive the second service discovery message.
  • the second service discovery message may also be sent to the third NAN device in a unicast manner, as long as the third NAN device receives the second service discovery message.
  • the second service identifier information and the second service relay indication information may be directly carried by the second service discovery message, or may be implicitly carried in the second service discovery message.
  • the second service identifier information is a Bloom filter.
  • the form (Bloom filter) is implicitly carried in the second service discovery message.
  • the third NAN device determines, according to the second service identifier information and the second service relay indication information, whether the service that the first NAN device performs the service discovery subscription or the advertisement meets the service requirement of the third NAN device.
  • the third NAN device may be preset with a preset rule or a preset parameter, and the third NAN device may obtain the third service identifier according to the preset rule or the preset parameter and the second service identification information and the second service relay indication information.
  • the information wherein the third service identification information is used to indicate that the first NAN device performs a service discovery subscription or a service, and the third NAN device compares the service indicated by the third service identification information with the service corresponding to the service requirement of the third NAN device, Determining whether the service requested by the first NAN device for the service discovery subscription or the advertisement matches the service requirement of the third NAN device; the third NAN device may also according to the preset rule or the preset parameter and the second service identifier information, the third NAN device
  • the service provided by the self service request generates the fourth service identification information, where the fourth service identification information is used to indicate the service corresponding to the service requirement of the third NAN device, and the third NAN device compares the fourth service identification information with the second service identification information.
  • the preset rule or the preset parameter preset in the third NAN device corresponds to a preset rule or a preset parameter preset in the second NAN device, when the second NAN device according to the preset rule or the preset
  • the third NAN device may be configured according to the corresponding preset rule or the preset parameter and the second service identifier.
  • the information and the second service relay indication information acquire the first service identification information and the first service relay indication information.
  • the third NAN device may further perform the corresponding preset rule or preset parameter according to the The first service identification information and the first service relay indication information acquire a service that the first NAN device performs a service discovery subscription or release.
  • the third NAN device may further determine, according to the second service relay indication information, whether the second service discovery message needs to be transited.
  • the third NAN device determines, according to the second service relay indication information carried in the second service discovery message, whether the second service discovery message has been transited. Specifically, when the number of times that the second service discovery message indicated by the second service relay indication information is transited is greater than zero, the third NAN device may directly determine whether the second service discovery message has been transited.
  • the third NAN device sends a service matching response message to the second NAN device.
  • the third NAN device may send a first service response message for the first NAN device to the second NAN device, where the second NAN device may send the second message to the first NAN device according to the first service response message.
  • the service responds to the message, and establishes a NAN data link between the first NAN device and the second NAN device, and between the second NAN device and the third NAN device, respectively.
  • the second NAN device receives the first service discovery message that is sent by the first NAN device, including the first service identifier information and the first service relay indication information, and the second NAN device is configured according to the first service identifier.
  • the information and the first service relay indication information generate the second service identification information and the second service relay indication information, and send a second service discovery message carrying the second service identification information and the second service relay indication information to the third NAN device, where
  • the second service identifier information is different from the first service identifier information, so that the third NAN device can receive the second service discovery message and determine that the second service discovery message is transited according to the second service relay indication information, according to the second service.
  • the identification information and the second service relay indication information match the service that the first NAN device performs service discovery subscription or release with the third NAN device's own service requirement, and when the matching is successful, the service discovery subscription or the service is performed according to the first NAN device. Respond.
  • the third NAN device may obtain the service according to the second service identification information and the second service relay indication information.
  • the service identifier information is the same as the service that is obtained by the first service relaying device information.
  • the second NAN device can obtain the service corresponding to the service publishing device service release according to the second service identification information and the second service relay indication information, and thus can According to the second service identification information and the second service relay indication information, the first The NAN device performs service discovery subscription or published service matching with the third NAN device's own service requirements.
  • the NAN device that receives the second service discovery message is a NAN device that does not support multi-hop service discovery
  • the NAN device also has a service that matches the service release performed by the service publishing device.
  • the service of the service publishing device for service publishing cannot be matched with the service request of the NAN device according to the second service identification information, so that the NAN device can obtain a conclusion that the service request of the NAN device does not match the service published by the service publishing device. So that the NAN device does not respond.
  • the service discovery method provided by the embodiment of the present invention enables a NAN device that does not support multi-hop service discovery to discover a multi-hop service that has been transited, on the premise that the transited service discovery message is correctly received by the NAN device that supports the multi-hop service discovery. The message does not respond.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the embodiment of the present invention provides a service discovery method, which is applied to the communication system provided by the foregoing embodiment, and includes:
  • the second NAN device receives a first service discovery message sent by the first NAN device, where the first service discovery message is used for service discovery, and the first service discovery message includes first service identifier information, where the first service identifier information is used to indicate The service corresponding to the first service discovery message.
  • the first service discovery message is used for service discovery, and the first service discovery message is used to notify other NAN devices located in the same NAN network of the change of the state of the first NAN device, that is, the first NAN device needs to be subscribed or released.
  • the service or the response to the other NAN device is as follows. Further, the first NAN device may further confirm the information of the data link establishing the interactive service data by sending the first service discovery message to the other NAN device.
  • the first NAN device sends a first service discovery message, and the first NAN device can broadcast the first service discovery message in the NAN network where the first NAN device is located, so that the second NAN device is in the second coverage of the signal coverage of the first NAN device.
  • the NAN device may receive the first service discovery message.
  • the first service discovery message may also be sent to the second NAN device in a unicast manner, as long as the second NAN device receives the first service discovery message.
  • the NAN device that receives the first service discovery message may match the service that is published or subscribed to the first service discovery message with the NAN device requirement or the service that can be provided by receiving the first service discovery message according to the first service identification information.
  • the first service identification information can be packaged The information of the first NAN device for service discovery subscription or published service.
  • the NAN device that receives the first service discovery message matches the first service discovery message, it needs to match the information of the service that is subscribed to or published by the service discovery and the requirement of the service of the NAN device, that is, the control type of the service.
  • the response is responded according to the received first service discovery message.
  • the service that subscribes to or publishes the service discovery, and the service that can be subscribed to or published by the first NAN device may include a service identifier or a service name; the control type of the service may be a service release, a service subscription, and a service follow-up.
  • the service name of the service subscription or the publication is hashed, and the first 48 bit is taken as the first service identification information.
  • the first service identifier information may be directly carried by the first service discovery message, or may be implicitly carried in the first service discovery message.
  • the first service identifier information is a Bloom filter. The form of filter) is implicitly carried in the first service discovery message.
  • the second NAN device generates and sends a second service discovery message for service discovery according to the first service discovery message, where the second service discovery message includes the second service identifier information and the service multi-hop indication information, and the second service identifier information is The first service identification information is not equal.
  • the second NAN device serves as a service relay device that transits the service discovery initiated by the first NAN device.
  • the service multi-hop indication information is used to indicate that the second service discovery message is used for transit service discovery.
  • the transit service discovery means that the device that sends the first service discovery message may not be the first NAN device corresponding to the service discovery by the first service discovery message, and the first service discovery message may be sent by a service relay device, where the second NAN is located.
  • the device serves as a service relay device that relays the first service discovery message, and the service relay device may be service information (such as a service identifier) of the service discovery message after receiving the service discovery message sent by the first NAN device for service discovery.
  • the information may be further spread, or may be further spread after receiving the service discovery message transmitted by the other service relay device.
  • the service information in the relayed service discovery message may be different or the same as the service information in the original service discovery message sent by the first NAN device.
  • a service relay device receives a service discovery message and sends another service discovery message to the received service discovery message for service discovery service information When it is spread, it is also called transit service discovery.
  • the service relay device is a device that diffuses service information (such as service identifier information, etc.) of the first NAN device through the transited service discovery message, and may be a dedicated device such as a proxy device, or may be
  • the NAN device in the NAN network is implemented by a NAN device that assumes a relay function by a certain rule, and the present invention is not limited.
  • the service multi-hop indication information includes a hop count (Hopcount), where the hop count refers to the actual hop count of the NAN device that sends the second service discovery message from the first NAN device, that is, the second service discovery message is transited. The number of times, when the hop count is greater than zero, the second service discovery message is transited at least once.
  • Hopcount hop count
  • the second service identifier information is different from the first service identifier information
  • the NAN device that does not support the multi-hop service discovery receives the service discovery message that includes the second service identifier information
  • the NAN device is configured according to the second service identifier.
  • the service obtained by the information is different from the service obtained according to the first service identification information.
  • the third NAN device in the embodiment of the present invention receives the service discovery message including the second service identification information
  • the third NAN device may obtain the service according to the second service identification information and the service obtained according to the first service identification information.
  • the second NAN device can obtain the service corresponding to the service publishing device service release according to the second service identification information.
  • the NAN device that receives the second service discovery message is a NAN device that does not support multi-hop service discovery, even if the service demand of the NAN device itself has a service matching the service release performed by the service publishing device, the NAN device also The service advertisement issued by the service publishing device cannot be matched with the service subscribed or issued by the NAN device according to the second service identification information, so that the NAN device determines that the service request of the NAN device does not match the service release corresponding service performed by the service publishing device. The conclusion is that the NAN device does not respond.
  • the second service identifier information may be generated according to a preset rule or a preset parameter preset in the second NAN device, or according to a preset rule or a preset parameter preset in the second NAN device, and the first service identifier information. Generating, as long as the NAN device that does not support the multi-hop service discovery and has the service matching the service corresponding to the first service discovery message, when receiving the service discovery message carrying the second service identification information, the NAN device according to the second service identification information.
  • the NAN device that subscribes or publishes the second service discovery message cannot successfully match the service that is received by the NAN device, and the NAN device that supports the multi-hop service discovery and has the service matching the service corresponding to the first service discovery message receives the carrier.
  • the service discovery message of the second service identification information When the service discovery message of the second service identification information is available, Generating the first service identification information by using the rule or parameter corresponding to the preset rule or the preset parameter in the second NAN device, and the second service identification information, and subscribing or publishing the service to the first NAN device according to the first service identification information.
  • the service can match the service corresponding to its own service demand.
  • the first NAN device performs a reversible operation such as adding/subtracting/multiplying/dividing according to the first service identification information and the preset value, or performing an operation of inverting, filling, out-of-order, and replacing some bits, thereby obtaining the first Two service identification information.
  • a reversible operation such as adding/subtracting/multiplying/dividing according to the first service identification information and the preset value, or performing an operation of inverting, filling, out-of-order, and replacing some bits, thereby obtaining the first Two service identification information.
  • the service relay device is a device that diffuses service information (such as service identifier information, etc.) of the first NAN device through the transited service discovery message, and may be a dedicated device such as a proxy device, or may be
  • the NAN device in the NAN network is implemented by a NAN device that assumes a relay function by a certain rule, and the present invention is not limited.
  • the second NAN device can broadcast the second service discovery message in the NAN network where the first NAN device is located, so that the third NAN device in the signal coverage of the first NAN device can receive the second service discovery message.
  • the second service discovery message may also be sent to the third NAN device in a unicast manner, as long as the third NAN device receives the second service discovery message.
  • the second service identifier information and the second service relay indication information may be directly carried by the second service discovery message, or may be implicitly carried in the second service discovery message.
  • the second service identifier information is a Bloom filter.
  • the form (Bloom filter) is implicitly carried in the second service discovery message.
  • the third NAN device receives the second service discovery message, and the third NAN device determines, according to the service multi-hop indication information, whether the second service discovery message is used for the transit service discovery.
  • the third NAN device determines, according to the service multi-hop indication information carried in the second service discovery message, whether the second service discovery message is used for the transit service discovery. Specifically, when the service multi-hop indication information directly indicates that the second service discovery message is used for the transit service discovery, the third NAN device may directly determine whether the second service discovery message is used for the transit service discovery; when the service multi-hop indication information is Indirectly indicating whether the second service discovery message is used for transit service discovery, such as the number of times the transit service discovery is transited, or the number of times the transit service discovery still needs to be transferred and the maximum number of transits allowed for the transit service discovery When the third NAN device can refer to the service multi-hop The information is processed accordingly, and based on the processed information, it is determined whether the second service discovery message is used for the transit service discovery.
  • the service multi-hop indication information includes a hop count, and when the hop count is greater than zero, the second service discovery message carrying the service multi-hop indication information is used for transit service discovery.
  • step 504 is performed.
  • the third NAN device determines, according to the second service identifier information, whether the service subscribed or issued by the first NAN device matches the service requirement of the third NAN device.
  • the third NAN device may be preset with a preset parameter, where the preset parameter is equal to the second service identifier information, and the third NAN device presets the preset parameter preset in itself and the second service discovery message.
  • the two service identifiers are compared, and the third NAN device responds according to the first service identifier information when the matching is performed;
  • the third NAN device may also be configured with the correspondence between the second service identifier information and the first service identifier information, and the second When the service discovery message carries the second service identifier information, the third NAN device responds according to the first service identifier information according to the corresponding relationship.
  • the correspondence between the second service identifier information and the first service identifier information may be the third NAN.
  • the device is generated according to the preset rule according to the second service identifier information, and may also be generated and set in the third NAN device for other devices.
  • the third NAN device may obtain the first service identifier information according to the preset rule according to the second service identifier information, or obtain the first service identifier information according to the second service identifier information and the service multi-hop indication information.
  • the third NAN device may match the service subscribed or issued by the first service discovery message with the service that the third NAN device needs or can provide according to the first service identifier information, and when the matching is successful, the third NAN device may go to the second NAN.
  • the device sends a first service response message for the first NAN device, and the second NAN device may send a second service response message to the first NAN device according to the first service response message, and between the first NAN device and the second NAN device, And establishing a NAN data link between the second NAN device and the third NAN device respectively.
  • the preset rule in the third NAN device corresponds to a preset rule in the second NAN device that acquires the second service identifier information according to the first service identifier information.
  • the second NAN device obtains the first service identification information according to the preset rule according to the preset rule.
  • the second NAN device inversely converts the second service identification information according to the corresponding preset rule according to the same preset value to obtain the first service identification information.
  • the third NAN device may obtain, according to the preset rule, the first service identifier information corresponding to the service subscribed or issued by the first NAN device according to the second service identifier information, and determine whether the first service identifier information and the third service identifier information are Matching, when the first service identification information matches the third service identification information, the service subscribed or issued by the first NAN device matches the service requirement of the third NAN device.
  • the third service identifier information is used to indicate the service corresponding to the service requirement of the third NAN device, and the third service identifier information may be preset in the third NAN device, or may be obtained by the third NAN device according to the preset rule. .
  • the third NAN device may further generate fourth service identification information according to the third service identification information, and determine whether the second service identification information matches the fourth service identification information, and when the second service identification information matches the fourth service identification information
  • the service subscribed or published by the first NAN device matches the service requirement of the third NAN device.
  • the third NAN device determines that the service subscribed or issued by the first NAN device matches the service requirement of the third NAN device, the third NAN device sends a service matching response message to the second NAN device.
  • the second NAN device receives the first service discovery message that is sent by the first NAN device and carries the first service identifier information, and sends the second service identifier information and the service multi-hop indication information. And a second service discovery message, where the first service identifier information is different from the second service identifier information, so that the third NAN device determines, according to the service multi-hop indication information, that the second service discovery message is transited, according to the second service identifier information.
  • a service that the NAN device performs for service discovery subscription or distribution matches the service required by the third NAN device itself, and responds when the match is successful.
  • the NAN device that does not support the multi-hop service discovery receives the second service discovery message
  • the NAN device cannot obtain the service discovery subscription or the service issued by the first NAN device according to the second service identification information in the second service discovery message.
  • the service that the first NAN device performs the service discovery subscription or publication cannot be matched with its own service, so that the second NAN device cannot be responded. Therefore, the service discovery method provided by the embodiment of the present invention enables the NAN device that does not support multi-hop service discovery to transit after the transited service discovery message is correctly received by the NAN device that supports the multi-hop service discovery.
  • the multi-hop service discovery message does not respond.
  • an embodiment of the present invention provides a service discovery method, which is applied to the communication system provided by the foregoing embodiment, and includes:
  • the second NAN device receives the first service discovery message sent by the first NAN device, where the first service discovery message includes a first service ID, a first hop count, a maximum hop count, and a transit validity time.
  • the first NAN device sends a first service discovery message, and the first NAN device can broadcast the first service discovery message in the NAN network where the first NAN device is located, so that the second NAN in the signal coverage range of the first NAN device
  • the device may receive the first service discovery message.
  • the first service discovery message may also be sent to the second NAN device in a unicast manner, as long as the second NAN device receives the first service discovery message.
  • the first service ID is used to indicate that the first NAN device subscribes or advertises the service through the first service discovery message
  • the first hop count is the actual hop of the first NAN device that is related to the service discovery by the first service discovery message.
  • Number that is, the number of transit devices through which the service discovery corresponding service discovery message passes
  • the maximum number of hops is the maximum number of times the service discovery is allowed to be transferred, that is, the maximum number of transit devices through which the service discovery corresponding service discovery message passes.
  • the transit effective time is a valid time for the first NAN device to relay the first service discovery message.
  • the first NAN device cyclically transfers the first service discovery message according to the preset period, and may also acquire the cycle time according to the preset rule and the transit effective time, and cyclically transfer the first service discovery message according to the cycle time.
  • the first service ID is a service that the first NAN device performs service discovery subscription or release through the first service discovery message, that is, service information of the subscription or release service
  • the first service ID may be a service name of the service, or may be The value of the service name of the service is converted.
  • the first NAN device performs a SHA-256 hash operation through the service name of the service discovery message subscription or the service name of the service, and then takes the first 48 bits are used as the first service ID.
  • the first service ID may be carried directly or implicitly in the form of a Bloom filter.
  • a special service may be added to the first service discovery message.
  • the second NAN device starts a timer.
  • the timing may be set by setting a timer module in the second NAN device, or may be timed by a timing device disposed outside the second NAN device, as long as the second NAN device starts timing and receives the first service discovery message.
  • the timer time is all right.
  • the second NAN device determines whether the first hop count is 0 and the first hop count is less than the maximum hop count.
  • the second NAN device determines whether the first hop count is 0 and the first hop count is less than the maximum hop count, where the first hop count is 0, the first service discovery message is not transited, and the first NAN device is the first service discovery message.
  • the first NAN device corresponding to the service discovery may generate and send a first service discovery message for the first NAN device.
  • the first hop count is less than the maximum hop count, which means that the second NAN device needs to transit the first service discovery message.
  • the second NAN device obtains the second service ID according to the first service ID, and generates a second hop according to the first hop number, where the first service ID is not equal to the second service ID.
  • the second NAN device may obtain the second service ID according to the first service ID by using a preset rule, including performing a reversible operation such as adding/subtracting/multiplying/dividing the first service ID and the preset value, or performing an inversion, Filling, out-of-order, and replacing some bits of operations to obtain a second service ID, or modifying the first service ID according to a preset rule by combining the first hop count and/or the maximum hop count, as long as the support is not supported.
  • the NAN device that the hop service finds and has the service matching with the first service ID can not match the service indicated by the second service ID with the service requirement of the service when receiving the service discovery message carrying the second service ID. can.
  • the first service ID may be modified only when the hop count is equal to 0 and the hop count is less than the maximum hop count, or may be modified when the hop count is less than the maximum hop count.
  • the second NAN device adds the first service ID to the preset value to obtain the second service ID, when the hop count is greater than 0.
  • the second NAN device will not modify the first service ID.
  • the second NAN device adds the first service ID plus the maximum hop count minus the difference of the hop count to obtain the second service ID.
  • the second NAN device generates the second hop according to the first hop according to the preset rule, and may perform operations such as adding/subtracting/multiplying/dividing the first hop count and the preset value, or performing inversion and filling. Obscuring, replacing the operations of the certain bits, so as to obtain the second hop count, as long as the second NAN device can obtain the number of times the second service discovery message has been transited according to the second hop count.
  • the second NAN device adds 1 to the first hop count to obtain a second hop count.
  • the second NAN device may generate the second service identifier information according to the first service identifier information, where the second hop count is greater than or equal to The first hop count is described.
  • the second hop count is greater than the first hop count, and the second hop count is equal to the first hop count plus one.
  • the second hop count is equal to the first hop count.
  • “the second service relay indication information is used to indicate the number of times the service discovery has been transferred” may be understood as The number of times the service discovery has been transferred may not exactly match the actual number of times, but by this second hop count, it has been indicated that the service discovery has been transited, which is a multi-hop service discovery.
  • the NAN device that does not support multi-hop service discovery is configured to prevent the second NAN device from processing the response message sent by the NAN device.
  • the second NAN device sends a second service discovery message, where the second service discovery message carries the second hop count and the second service ID.
  • the second NAN device sends a second service discovery message, where the second NAN device can broadcast the second service discovery message in the NAN network where the second NAN device is located, so that the third NAN in the signal coverage area of the second NAN device
  • the device may receive the second service discovery message.
  • the second service discovery message may also be sent to the third NAN device in a unicast manner, as long as the third NAN device receives the second service discovery message.
  • the second service discovery message carries the second hop count and the second service ID.
  • the third NAN device determines whether the second hop count is greater than 0.
  • the third NAN device determines whether the second hop count is greater than 0. When the second hop count is greater than 0, it indicates that the second service discovery message has been transited at least once.
  • the third NAN device acquires the first service ID according to the second hop count and the second service ID.
  • the third NAN device may obtain the first service ID according to the second service ID according to a preset rule, or obtain the first service ID according to the second hop number and the second service ID according to a preset rule, as long as the first service ID is available.
  • the second service ID can obtain the first service ID.
  • the third NAN device may acquire the first message type according to the second message type according to a preset rule.
  • the preset rule in the third NAN device corresponds to a preset rule in the second NAN device that acquires the second service ID according to the first service ID.
  • the second NAN device adds the first ID to the preset value to obtain the second ID, so the third NAN device subtracts the second ID from the same preset value as the first ID.
  • the preset value may be 1, that is, each transfer will increase the first ID by 1.
  • the third NAN device determines, according to the first service ID and the first hop count, whether the service that the service publishing device performs service publishing matches the service of the third NAN device.
  • the step of obtaining the first service ID according to the second service ID and the second hop count according to the reference step 607 may be The second hop count obtains the first hop count, obtains the corresponding service ID according to the first service ID and the first hop count, and sequentially obtains the service ID when the hop count is zero by referring to the foregoing steps, and the service indicated by the service ID is A NAN device performs a service discovery subscription or published service.
  • Determining whether the service that the service publishing device performs the service is matched with the service of the third NAN device, whether the service information required by the third NAN device or capable of providing the service matches the service that the service publishing device performs the service publishing, specifically
  • the service required by the third NAN device or the service that can be provided by the service device is corresponding to the service that the service publishing device performs the service release, and the third NAN device may further convert the service information required or capable of providing the service according to a preset rule. According to the result of the conversion, it is judged whether the two match, or the third NAN device performs corresponding conversion on the service that the service publishing device performs service delivery, and then determines whether the two match according to the converted result.
  • the third NAN device when determining whether the third NAN device supports the service publishing device for performing service publishing, the third NAN device generally needs to match the type of the second service discovery message with the type of the third NAN device having the service, because The type of the second service discovery message is the same as the type of the first service discovery message in this embodiment. Therefore, when the service subscribed or published by the first service discovery message matches the service of the third NAN device, the second service discovery message is The type also matches the type of service the third NAN device has.
  • the service that the service publishing device performs service publishing is a subscription service
  • the third NAN device can provide a service corresponding to the service that the service publishing device performs service publishing
  • the third NAN device supports the service publishing device to perform service publishing.
  • the service publishing device performs the service publishing service
  • the third NAN device itself needs the service publishing device to perform the service publishing service
  • the third NAN device supports the service publishing device to perform the service publishing service.
  • step 609 is performed.
  • the third NAN device sends a first service response message to the second NAN device.
  • the third NAN device sends a service response message for the second NAN device to the second NAN device.
  • the first service response message carries information for establishing a transit NAN data link between the third NAN device and the second NAN device, and the information may include time slot information and frequency information, where the information is used to determine A common time-frequency resource is generated, and a NAN data link is performed on the time-frequency resource.
  • the third NAN device when the second service discovery message is an SDF Subscribe service subscription message, the third NAN device sends an SDF Publish service release message to the second NAN device, and the SDF Publish service release message sent to the second NAN device carries multiple hops.
  • the service matching indication information when the second service discovery message is an SDF Publish service release message, the third NAN device sends an SDF Follow-up service subsequent message to the second NAN device, and the SDF Follow-up service sent to the second NAN device
  • the subsequent message carries the multi-hop service matching indication information, where the multi-hop service matching indication information is used to indicate that the service matching response message is used to respond to the transited service discovery message, that is, the second service discovery message.
  • the second NAN device sends a second service response message to the first NAN device.
  • the second NAN device After the second NAN device receives the first service response message, the second NAN device sends a second service response message to the first NAN device, and between the second NAN device and the third NAN device, and the second NAN device and the first A NAN data link is established between the NAN devices.
  • the second service response message carries information for establishing a transit NAN data link between the second NAN device and the first NAN device, and the information may include time slot information and frequency information, where the information is used to determine A common time-frequency resource is generated, and a NAN data link is performed on the time-frequency resource.
  • the second NAN device determines whether the timer time is greater than or equal to the transit validity time.
  • the second NAN device determines whether the timer time is greater than or equal to the transit validity time, that is, whether the time for the second NAN device to forward the first service discovery message is greater than the effective time for the first service message to be transited.
  • the transit effective time may be equal to the sum of the Discovery window (DW) times agreed by the multiple NAN mechanisms.
  • DW Discovery window
  • step 512 When the timer time is greater than or equal to the transit effective time, the following step 512 is performed.
  • the second NAN device cancels sending the second service discovery message.
  • the cancel sending may be a message sending to abort the ongoing message sending or canceling the preparation to start.
  • the second NAN device receives the first service discovery message sent by the first NAN device, and the second NAN device determines that the first service discovery message needs to be transited by using the first hop count and the maximum hop count.
  • the first service discovery message is carried Modifying a service ID to obtain a second service ID that is not equal to the first service ID, and forwarding a second service discovery message carrying the second service ID and the second hop number, so that the third NAN device can be based on the second service ID.
  • the third NAN device can match the service that the first NAN device performs the service discovery subscription or release according to the forwarded second service discovery message with the service that the third NAN device itself has, and for the first NAN when the matching is successful.
  • the device responds with a service discovery subscription or published service.
  • the NAN device that receives the second service discovery message is a NAN device that does not support multi-hop service discovery
  • the NAN device also has a service that matches the service release performed by the service publishing device.
  • the service that the service publishing device performs service publishing cannot be matched with the service requirement of the NAN device according to the second service ID, so that the NAN device can conclude that the service requirement of the service does not match the service published by the service publishing device.
  • an embodiment of the present invention provides a service discovery method, which is applied to the communication system provided by the foregoing embodiment, where the method includes:
  • the second NAN device receives a first service discovery message sent by the first NAN device for service discovery, where the first service discovery message carries the first service control type information and the first service identification information.
  • the first service discovery message is used for service discovery, and the first service discovery message is used to notify other NAN devices located in the same NAN network as the first NAN device of the change of the state of the device, that is, to notify other NAN devices.
  • the first NAN device itself needs to subscribe or publish the service or the response to other NAN devices as follows, etc. Further, the first NAN device may further confirm by sending the first service discovery message to other NAN devices. Establish information about the data link of the interactive service.
  • the first NAN device sends a first service discovery message, and the first NAN device can broadcast the first service discovery message in the NAN network where the first NAN device is located, so that the second NAN in the signal coverage range of the first NAN device
  • the device may receive the first service discovery message.
  • the first service discovery message may also be sent to the second NAN device in a unicast manner, as long as the second NAN device receives the first service discovery message.
  • the first service control type information is used to indicate a service control type for performing service discovery subscription or publication by using the first service discovery message, that is, a service control type of the service carried by the first service discovery message.
  • a service control type of the service carried by the first service discovery message When the NAN device that receives the first service discovery message matches the service subscribed or published by the first service discovery message, the information about the service that subscribes to or publishes the service discovery and the demand for the service by the NAN device, that is, the service, are required.
  • the control type is matched, and when the matching is successful, the response is responded according to the received first service discovery message.
  • the service control type of the service service that the service discovery subscription or the advertisement service may subscribe to or publish for the first NAN device, that is, the service control type of the service carried by the first service discovery message.
  • the NAN device that receives the first service discovery message matches the service subscribed or published by the first service discovery message, the information about the service that subscribes to or publishes the service discovery and the demand for the service by the NAN device, that is, the service, are required.
  • the control type is matched, and when the matching is successful, the response is responded according to the received first service discovery message.
  • the service in which the service discovery subscription or publication is performed may be a service subscribed or published by the first NAN device, and the service control type may be a service release, a service subscription, and a service follow-up.
  • the first service identification information is used to indicate a service subscribed or published by the first service discovery message.
  • the NAN device that receives the first service discovery message may perform the service subscribed or published by the first service discovery message and the service subscribed or issued by the NAN device that receives the first service discovery message according to the first service control type information. match.
  • the service subscribed or issued by the NAN device receiving the first service discovery message refers to the service provided by the NAN device, and the service provided by the NAN device includes the service required or provided by the NAN device.
  • the first service control type information may be a service control type of the service discovery service for the first service discovery message, and the NAN device that responds to the service discovery message needs to be first according to the first service control type information.
  • Service discovery message subscription or publication The service matches the service that it subscribes to or publishes.
  • the second NAN device may perform the service discovery subscription or release by using the first service discovery message according to the first service control type information.
  • the service matches its own service needs.
  • the first service control type information may be directly carried by the first service discovery message, or may be implicitly carried in the first service discovery message.
  • the first service control type information is a Bloom filter.
  • the form (Bloom filter) is implicitly carried in the first service discovery message.
  • the second NAN device sends a second service discovery message, where the second service discovery message includes the second service control type information and the first service identification information.
  • the second service control type information is used to indicate a control type of the service carried by the second service discovery message.
  • the second service control type information is different from the first service control type information.
  • the first service identification information is used to indicate that the first NAN device performs a service discovery subscription or a published service.
  • the second service control type information is different from the first service control type information, and the service control type carried by the second service discovery message for service discovery subscription or publication is not equal to the service discovery carried by the first service discovery message.
  • the NAN device that receives the second service discovery message is a NAN device that does not support multi-hop service discovery, even if the NAN device has a service that matches the first service control type information, the NAN device controls the type information according to the second service.
  • the first service identification information matches the service subscribed or published by the second service discovery message with the service that the NAN device needs or can provide, so that the NAN device obtains the service and the second service discovery message that it needs or can provide. Corresponding to the conclusion that the service does not match, and then the response message will not be sent.
  • the first NAN device when the second NAN device receives the first service discovery message generated and sent by the first NAN device, the first NAN device performs service discovery by sending a first service discovery message, where the service control type of the first service discovery message Determining, according to a certain field of the first service discovery message, for example, according to a Service Control field determination of the first service discovery message, in order to ensure that the NAN device receiving the second service discovery message is a NAN device that does not support multi-hop service discovery, the NAN The device is unable to respond. You can use the value defined in the Service Control field to be reserved to indicate the service control of the service discovery message being relayed. The type, for example, the Service Control Type is defined as the reserved value 11 is redefined as the transited service discovery message.
  • the Service Control value in the second service discovery message is 11
  • another field in the second service discovery message such as the Data info field, may indicate the true service control type, that is, the service control type of the first service discovery message.
  • the third NAN device may determine, by using the Data info field of the second service discovery message, whether the service that the user can provide or subscribe to corresponds to the service that the first NAN device performs the service discovery subscription or the publication. If it is satisfied, it will respond.
  • the device determines, according to the value 11 of the Service Control field, the second service discovery message for the service discovery subscription or the service control type issued, because When the device sees that the value of the Service Control field is 11, the service discovery type carried by the second service discovery message for service discovery subscription or publication is a transit service discovery message, so the device further according to the second The real service control type indicated by the Data info field of the service discovery message is the service control type of the first service discovery message, to determine whether the service that the self-provided or subscribed service corresponds to the service of the first NAN device for service discovery subscription or publication. , if it is satisfied, respond.
  • the device determines, according to the value 11 of the Service Control field, the second service discovery message for the service discovery subscription or the service control type issued, because When the value of the Service Control field is 11 in the device, the service control type carried in the second service discovery message for service discovery subscription or publication is empty, so the device has the information matching the first service control type information.
  • the service, the NAN device is also unable to match the service subscribed or published by the second service discovery message with the service that the NAN device needs or can provide according to the second service control type information and the first service identification information, and thus does not respond.
  • the second service control type information may be preset in the second NAN device, or may obtain the second service control type information according to the first service control type information according to a preset rule or correspondence, or according to a preset rule.
  • the service control type information is converted into the second service control type information, and the second service control type information is received as long as the NAN device that does not support the multi-hop service discovery and has the service matching service that is published or subscribed to the first service discovery message is received.
  • the service discovery message, the NAN device discovers the second service according to the second service control type information The service subscribed or published by the message cannot be successfully matched with the service that the NAN device needs or can provide.
  • the first service identifier information may be sent by the first NAN device, and may be specifically carried by the first service discovery message, or may be acquired by the second NAN device according to a preset rule preset in the second NAN device, or by the second NAN devices are obtained from other devices or devices.
  • the second service discovery message may further include a second service relay indication information, where the second service relay indication information is used to indicate that the second service discovery message carrying the second service relay indication information passes through the NAN device supporting multi-hop service discovery.
  • the second service relay indication information may directly indicate that the second service discovery message has been transited, or may indirectly indicate that the second service discovery message has been transited, such as the number of times the second service discovery message has been transferred.
  • the second service relay indication information includes a hop count (Hopcount), where the hop count refers to the actual hop count of the NAN device that sends the second service discovery message from the first NAN device, that is, the second service discovery message is transited. The number of times, when the hop count is greater than zero, the second service discovery message is transited at least once.
  • Hopcount hop count
  • the second service discovery message may further carry a first service control type message, where the first service control type message is used to indicate a control type of the service that the first NAN device performs the service discovery subscription or the release, in this embodiment.
  • the first service control type message is used to indicate a control type of the service that the first NAN device performs the service discovery subscription or the publication.
  • the second NAN device can broadcast the second service discovery message in the NAN network where the second NAN device is located, so that the third NAN device in the signal coverage of the second NAN device can receive the second service discovery message.
  • the second service discovery message is sent to the third NAN device in a unicast manner, as long as the third NAN device receives the second service discovery message.
  • the second service control type information and the first service identification information may be directly carried by the second service discovery message, or may be implicitly carried in the second service discovery message in other forms, specifically, the second service control type.
  • the information and the first service identification information are implicitly carried in the second service discovery message in the form of a Bloom filter or the like.
  • the third NAN device determines, according to the second service control type information, whether the second service discovery message is a transited service discovery message.
  • the third NAN device determines, according to the second service control type information carried in the second service discovery message, whether the second service discovery message has been transited. Specifically, when the service control type indicated by the second service control type information is a transited service type, the third NAN device may directly determine whether the second service discovery message is transited; or may be the second service control type. When the service control type indicated by the information is not any one of subscription, release or subsequent, the third NAN device may determine that the second service discovery message is transited.
  • step 604 is performed.
  • the third NAN device determines, according to the first service identifier information, whether the service that the first NAN device performs the service discovery subscription or the service corresponding to the service requirement of the third NAN device matches.
  • the third NAN device may be preset with a preset parameter, where the preset parameter is equal to the first service identifier information, and the third NAN device presets the preset parameter preset in itself and the second service discovery message.
  • a service identification information is compared to determine whether the service corresponding to the service request of the third NAN device by the first NAN device for service discovery subscription or publication matches.
  • the third NAN device may also match the service corresponding to the service requirement of the third NAN device with the service indicated by the first service identification information according to a preset rule, to determine the service and the third service that the first NAN device performs the service discovery subscription or release. Whether the services corresponding to the service requirements of the NAN device match.
  • the third NAN device may further determine that the control type of the service that the first NAN device performs the service discovery subscription or the advertisement corresponds to the service requirement of the third NAN device. Whether the control type of the service matches.
  • the third NAN device sends a service matching response message to the second NAN device.
  • the third NAN device sends a service matching response message to the second NAN device, where the service matching response message carries control that can be used by the second NAN device to confirm with the third NAN device the service discovery subscription or release performed by the first NAN device A message indicating whether the type matches the control type of the service request of the third NAN device.
  • the third NAN device sends a service matching response message to the second NAN device, where the service matching response message may include: the third NAN device sends the second NAN device to the second NAN device.
  • the control type of the service is matched; the service matching response message may further include: the third NAN device transmitting, to the second NAN device, a service that confirms that the service of the first NAN device for service discovery subscription or publication corresponds to the service requirement of the third NAN device And matching the acknowledgement message, so that after the second NAN device receives the acknowledgement message, sending, to the third NAN device, a control type of the service that the first NAN device performs the service discovery subscription or the advertisement, so that the third NAN device can be based on the third NAN
  • the control type of the service corresponding to the service requirement of the device is matched with the control type of the service that the first NAN device performs the service discovery subscription or the published service; the service matching response message may further include: when the second service discovery message further carries the first service control Type, when the third NAN device determines that the first NAN device performs a service discovery subscription or sends When control type service requirements of the service type of the third control device NAN corresponding matching services, or publish subscribe service
  • the service response message includes the third NAN device according to the third NAN
  • the fifth service identifier information generated by the service corresponding to the service requirement of the device after receiving the service matching response message, the second NAN device may, according to the fifth service identifier information, the service corresponding to the service requirement of the third NAN device and the first The NAN device performs a service discovery subscription or a published service to match.
  • the third NAN device when the third NAN device sends a confirmation message to the second NAN device that the first NAN device performs the service discovery subscription or the service matching the service corresponding to the service requirement of the third NAN device, the second NAN device receives the confirmation message.
  • the control type of the service that the first NAN device performs the service discovery subscription or the advertised is sent to the third NAN device, and the third NAN device can control the type of the service corresponding to the service request of the third NAN device and the first The NAN device matches the control type of the service discovery subscription or published service.
  • the second service discovery message further includes the first service control type information
  • the first service control type information is used to indicate a control type of the service of the first NAN device that performs the service discovery subscription or the release
  • the third NAN device Arthur's service corresponding to its service needs and second The first service control type information carried in the service discovery message is compared.
  • the third NAN device responds according to the first service control type information, including when the first service control type information is a subscription, and the service requirement of the third NAN device
  • the service indicated by the first service identifier information is provided, determining that the service that the first NAN device performs the service discovery subscription or the service corresponding to the service requirement of the third NAN device is matched; when the first service control type information is published, and When the service requirement of the three NAN devices needs to use the service indicated by the first service identifier information, it is determined that the service that the first NAN device performs the service discovery subscription or the service corresponding to the service request of the third NAN device matches.
  • the second NAN device receives the first service discovery message sent by the first NAN device, and when the second NAN device determines that the first service discovery message needs to be transited, the second NAN device is in the second
  • the first service control type information carried in the NAN device is modified to obtain second service control type information that is not equal to the first service control type information, and forwards the second service control type information to the third NAN device.
  • the second service discovery message of the service identifier information when the third NAN device receives the second service discovery message service discovery message carrying the second service control type information, may determine the second service discovery message according to the second service control type information.
  • the second NAN device can confirm with the third NAN device whether the control type of the service discovery subscription or the published service performed by the first NAN device is The service requirement of the third NAN device matches the control type of the service, so that the third NAN is matched when matching Preparation can be found in the service subscription or publication services make the appropriate response for the first NAN device.
  • the NAN device that does not support the multi-hop service discovery service cannot recognize the second service control type information when receiving the second service discovery message.
  • the service discovery method provided by the embodiment of the present invention enables a NAN device that does not support multi-hop service discovery to pass the transit multi-hop service on the premise that the transited service discovery message is correctly received by the NAN device that supports the multi-hop service discovery.
  • the discovery message does not respond.
  • an embodiment of the present invention provides a service discovery method, which is applied to the communication system provided by the foregoing embodiment, where the method includes:
  • the second NAN device receives the first sent by the first NAN device for service discovery.
  • the service discovery message where the first service discovery message includes the first service control type information, the first hop count, the maximum hop count, and the transit valid time.
  • the first service discovery message is used for service discovery, and the first service discovery message is used to notify other NAN devices located in the same NAN network of changes in the state of the device, that is, to inform the first NAN device that the service needs to be subscribed or published. Or the response to the other NAN device is as follows, and further, the first NAN device may further confirm the information of the data link establishing the interactive service data by sending the first service discovery message to the other NAN device.
  • the first NAN device sends a first service discovery message, and the first NAN device can broadcast the first service discovery message in the NAN network where the first NAN device is located, so that the second NAN in the signal coverage range of the first NAN device
  • the device may receive the first service discovery message.
  • the first service discovery message may also be sent to the second NAN device in a unicast manner, as long as the second NAN device receives the first service discovery message.
  • the first service control type information is used to indicate a service control type for performing service discovery subscription or publication by using the first service discovery message, that is, the service control type of the first service discovery message carrying the service.
  • the NAN device that receives the first service discovery message matches the service subscribed or published by the first service discovery message, the information about the service that subscribes to or publishes the service discovery and the demand for the service by the NAN device, that is, the service, are required.
  • the control type is matched, and when the matching is successful, the response is responded according to the received first service discovery message.
  • the control type indicated by the first service control type information may be a service publishing Publish, a service subscription Subscribe, or a service follow-up follow-up.
  • the first service control type information may be 00 or 01 or 10.
  • the second NAN device receives the first service discovery message generated and sent by the first NAN device
  • the first NAN device performs service discovery by sending a first service discovery message, where the service control type of the first service discovery message
  • the NAN device may be determined according to a certain field of the first service discovery message, for example, according to a Service Control field of the first service discovery message, in order to ensure that the NAN device receiving the second service discovery message is a NAN device that does not support multi-hop service discovery. Unable to respond, you can use the value defined in the Service Control field to be reserved to indicate the service control type of the service discovery message being relayed.
  • the service control type is defined as the reserved value 11 and is redefined as the transit service.
  • the discovery message when the second NAN device generates and sends the second service discovery message, the second service discovery The value of the Service Control in the message is 11, and another field in the second service discovery message, such as the Data info field, may indicate the service control type of the real service control type, that is, the first service discovery message.
  • the third NAN device may determine, by using the Data info field of the second service discovery message, whether the service that the user can provide or subscribe to corresponds to the service that the first NAN device performs the service discovery subscription or the publication. If it is satisfied, it will respond.
  • the device determines, according to the value 11 of the Service Control field, the second service discovery message for the service discovery subscription or the service control type issued, because When the value of the Service Control field is 11 in the device, the service control type carried in the second service discovery message for service discovery subscription or publication is empty, so the device has the information matching the first service control type information.
  • the service, the NAN device is also unable to match the service subscribed or published by the second service discovery message with the service that the NAN device needs or can provide according to the second service control type information and the first service identification information, thereby avoiding response and saving The power of the device saves the air interface message.
  • the first hop count is the actual hop count of the first NAN device that is found by the first service discovery message corresponding to the first NAN device, that is, the number of transit devices that the service discovery message corresponding to the service discovery passes, and the maximum hop count is The maximum number of transit devices that the service discovery allows to be transited, that is, the maximum number of transit devices that the service discovers the corresponding service discovery message.
  • the transit effective time is the effective time for the first NAN device to relay the first service discovery message.
  • the first NAN device cyclically transfers the first service discovery message according to the preset period, and may also acquire the cycle time according to the preset rule and the transit effective time, and cyclically transfer the first service discovery message according to the cycle time.
  • the NAN device that receives the first service discovery message may perform the service subscribed or published by the first service discovery message and the service subscribed or issued by the NAN device that receives the first service discovery message according to the first service control type information. match.
  • the service subscribed or issued by the NAN device receiving the first service discovery message refers to the service provided by the NAN device, and the service provided by the NAN device includes the service required or provided by the NAN device.
  • the first service control type information may be a service control type of the service discovery service for the first service discovery message, and the NAN device that responds to the service discovery message needs to be first according to the first service control type information.
  • Service discovery message subscription or publication The service matches the service that it subscribes to or publishes.
  • the second NAN device may perform the service discovery subscription or release by using the first service discovery message according to the first service control type information.
  • the service matches the services that it needs or can provide.
  • the first service control type information may be directly carried by the first service discovery message, or may be implicitly carried in the first service discovery message.
  • the first service control type information is a Bloom filter.
  • the form (Bloom filter) is implicitly carried in the first service discovery message.
  • the first service control type information is usually located in a Service Descriptor Attribute that is carried in the service discovery message.
  • a field information specifically for indicating multiple hops may be added to the first service discovery message, or information of multiple hops may be indirectly expressed for hop count information or the like.
  • the Service Control Type field of the Service Control in the Service Descriptor Attribute (SDA) carried in the service discovery message indicates the first service control type information, when the Service Control Type is 00:
  • the service control type of the first service discovery message for the service discovery service is service publishing (Publish); when the Service Control Type is 01, the service control type of the first service discovery message for the service discovery service is a subscription (Subscribe)
  • the Service Control Type is 10
  • the service discovery type of the first service discovery message for the service discovery service is Follow Up.
  • the second NAN device starts a timer.
  • step 602 For details, refer to step 602 in the foregoing embodiment, and details are not described herein.
  • the second NAN device determines whether the first hop count is 0 and the first hop count is less than the maximum hop count.
  • step 603 For details, refer to step 603 in the above embodiment, and details are not described herein.
  • the second NAN device obtains second service control type information according to the first service control type information, and generates a second hop count according to the first hop count.
  • the first service control type information is not equal to the second service control type information.
  • the second NAN device may modify the first service control type information to obtain the second service control type information by using a preset rule.
  • the second service control type information may be a service type defined as being broadcasted, or may be defined. The type of service that is not responding to an invalid service type, or a NAN device that does not support multi-hop service discovery.
  • the NAN device that does not support the multi-hop service discovery cannot successfully match the service discovery message carrying the second service control type information.
  • the first service control type information includes subscribing to Subscribe or publishing Publish or subsequent Follow-up
  • the second service control type information includes other types, which are different from subscription, release or follow-up; or first service control type information Including 00 or 01 or 10, the second service control type information includes 11.
  • the Service Control Type field of the Service Control in the Service Descriptor Attribute (SDA) carried in the service discovery message indicates the first service control type information or the second service control type information
  • the second NAN device may modify the first service control type information to a preset value, that is, the second service control type information, where the second service control type information may be a service type defined as being relayed.
  • the Service Control Type is 11
  • the second service discovery message performs a service discovery type of the service discovery service as a relayed service.
  • the Data Info field of Service Control in the Service Descriptor Attribute (SDA) carried in the service discovery message is added to the service type of the service discovery message Service Control Type.
  • a service control type information that is, a service control type of the service discovery service through the first service discovery message.
  • the third NAN device may discover the message true type field Service in the Data Info field of the Service Control in the Service Descriptor Attribute (SDA) carried in the service discovery message.
  • SDA Service Descriptor Attribute
  • the second NAN device generates the second hop according to the first hop according to the preset rule, and may perform operations such as adding/subtracting/multiplying/dividing the first hop count and the preset value, or performing inversion and filling. Obscuring, replacing the operation of the certain bits, so as to obtain the second hop count, as long as the third NAN device can obtain the number of times the second service discovery message has been transited according to the second hop count.
  • the second NAN device adds 1 to the first hop count to obtain a second hop count.
  • the second NAN device sends a second service discovery message, where the second service discovery message carries the second service control type information and the first service identification information.
  • the second NAN device sends a second service discovery message, where the second NAN device can broadcast the second service discovery message in the NAN network where the second NAN device is located, so that the third NAN in the signal coverage area of the first NAN device
  • the device may receive the second service discovery message.
  • the second service discovery message may also be sent to the third NAN device in a unicast manner, as long as the second NAN device receives the second service discovery message.
  • the second service discovery message further carries the second hop count
  • the third NAN device may determine, according to the second service discovery message, whether the second hop count is greater than 0, and when the second hop count is greater than 0, the second hop count is The service discovery message has been transferred at least once.
  • the third NAN device determines, according to the second service control type information, whether the second service discovery message is a transited service discovery message.
  • the third NAN device determines, according to the second service control type information carried in the second service discovery message, whether the second service discovery message has been transited. Specifically, when the service control type indicated by the second service control type information is a transited service type, the third NAN device may directly determine whether the second service discovery message is transited; or may be the second service control type. When the service control type indicated by the information is not any one of subscription, release or subsequent, the third NAN device may determine that the second service discovery message is transited.
  • the third NAN device determines, according to the first service identifier information, whether the service that the first NAN device performs the service discovery subscription or the service corresponding to the service requirement of the third NAN device matches.
  • step 604 For details, refer to step 604 in the above embodiment, and details are not described herein again.
  • the third NAN device may further generate the fifth service identifier information according to the service corresponding to the service requirement of the third NAN device, where the fifth service identifier information is used to indicate the service corresponding to the service requirement of the third NAN device, so as to facilitate the third
  • the NAN device can match the first service identifier information according to the fifth service identifier information, and when the first service identifier information matches the fifth service identifier information, determine, by the first NAN device, the service discovery subscription or the published service and the third NAN.
  • the service requirements of the device match the service.
  • step 808 is performed.
  • the third NAN device sends a third service discovery message to the second NAN device.
  • the third service discovery message may include the third service control type information, where the third service control type information is used to indicate the control type of the service corresponding to the service requirement of the third NAN device, so that the second NAN device is configured according to the third service.
  • the control type information is matched with the control type of the service that the first NAN device performs the service discovery subscription or release.
  • the third NAN device sends a third service discovery message to the second NAN device after confirming that the first NAN device performs the service discovery subscription or the service corresponding to the service corresponding to the service request of the third NAN device, and the third The service discovery message carries the third service control type information, and the control type indicated by the third service control type information is a service subscription.
  • the control type of the service that the first NAN device performs the service discovery subscription or the release is the service release
  • the second NAN The device confirms that the service of the third NAN device's own service requirement matches the service type of the first NAN device for service discovery subscription or release and the service control type.
  • the second NAN device sends a fourth service discovery message to the third NAN device.
  • the second NAN device determines that the control type of the service that the first NAN device performs the service discovery subscription or the advertisement matches the third service control type
  • the second NAN device sends a fourth service discovery message to the third NAN device, and the fourth service discovery The message is used to indicate to the third NAN device that the third service control type matches the control type of the service that the first NAN device performs the service discovery subscription or release.
  • the fourth service discovery message may carry information for establishing a transit NAN data link between the second NAN device and the third NAN device, where the information may include time slot information and frequency information, where the information is used. Determining a common time-frequency resource, and performing a NAN data link on the time-frequency resource, so that the third NAN device receives the sixth service response message, and establishes a NAN between the second NAN device and the third NAN device. Data link.
  • the second NAN device may further send, to the first NAN device, information about the NAN data link for the second NAN device to establish a relay with the first NAN device, where the information may include time slot information and frequency information.
  • the information is used to determine a common time-frequency resource, and the NAN data link is performed on the time-frequency resource, so that the first NAN device receives the information, and establishes between the second NAN device and the first NAN device. NAN data link.
  • the second NAN device determines whether the timer time is greater than or equal to the transit validity time.
  • step 61 For details, refer to step 61 in the above embodiment, and details are not described herein.
  • the second NAN device stops sending the second service discovery message to the third NAN device.
  • the second NAN device receives the first service discovery message sent by the first NAN device, and determines that the first service discovery message needs to be performed when the second NAN device transits the first hop count and the maximum hop count.
  • the second service discovery message is sent to the third NAN device, where the second service discovery message carries the first service control type information to be carried in the second NAN device to be modified to obtain information that is not equal to the first service control type.
  • the second service control type information and the first service identification information so that the third NAN device can obtain the first service control type information according to the second service control type information, determine that the second service discovery message is transited, and control according to the first service
  • the type five service identification information is to be used to perform the service discovery type of the service discovery service by using the first service discovery message.
  • the first NAN device performs the service discovery subscription or the published service matches the service of the third NAN device's own service requirement, and when the matching is successful, the matching is performed.
  • the service discovery message carries third service control type information indicating a control type of the service of the third NAN device's own service requirement, so that the second NAN device can perform service discovery subscription or release with the first NAN device according to the third service control type information.
  • the control type of the service is matched so that the second NAN device sends a first service response message to the third NAN device when matching, thereby establishing a NAN between the first NAN device, the service relay device, and the service response device. Data link.
  • the NAN device that does not support the multi-hop service discovery receives the second service discovery message
  • the NAN device cannot perform the service discovery subscription or the published service and the service that the user needs or provides according to the second service control type information. Matching so that no response can be made to the first NAN device. Therefore, the service discovery method provided by the embodiment of the present invention enables a NAN device that does not support multi-hop service discovery to pass the transit multi-hop service on the premise that the transited service discovery message is correctly received by the NAN device that supports the multi-hop service discovery. The discovery message does not respond.
  • the service discovery method provided by the embodiment of the present invention after step 807, further includes:
  • the third NAN device sends a fifth service discovery message to the second NAN device.
  • the fifth service discovery message may include only the service control type requesting information, where the service control type requesting information is used to obtain, from the second NAN device, a control type of the first NAN device for service discovery subscription or the published service, so as to facilitate the third type.
  • the NAN device can obtain, from the second NAN device, a control type of the service that the first NAN device performs the service discovery subscription or the advertisement, and the control type of the service that the first NAN device performs the service discovery subscription or release and the third NAN device itself. The demand matches the control type of the service.
  • the second NAN device receives the fifth service discovery message, and sends a sixth service discovery message to the third NAN device, where the sixth service discovery message includes the first service control type information.
  • the second NAN device receives the fifth service discovery message sent by the third NAN device, where the third NAN device is the NAN device that transits the second service discovery message, and when the second NAN device determines that the first NAN device performs the service discovery subscription or the published service.
  • the control type matches the third service control type
  • the second NAN device sends a sixth service discovery message to the third NAN device, where the sixth service discovery message is used to indicate the third service control type and the first NAN to the third NAN device.
  • the device performs a service discovery subscription or a matching type of control for the published service.
  • the third NAN device receives the sixth service discovery message, and responds according to the first service control type information.
  • the third NAN device receives the sixth service discovery message sent by the second NAN device, and responds to the second NAN device according to the indication in the sixth service discovery message.
  • the sixth service discovery message may further include first service control type information, where the first service control type information is used to indicate a control type of the service that the first NAN device performs the service discovery subscription or the release.
  • the third NAN device matches the service of the service request according to the first service control type information, and responds when matching.
  • the service requirement of the third NAN device can provide the service indicated by the second service identification information, determining that the first NAN device performs a service discovery subscription or The control type of the published service matches the control type of the service of the third NAN device, that is, the service subscribed by the first NAN device matches the service requirement of the third NAN device.
  • the third NAN device needs to use the service indicated by the second service identification information, determining that the first NAN device performs the service discovery subscription or the published service and the third The service requirements of the NAN device match, that is, the service published by the first NAN device matches the service requirement of the third NAN device.
  • the service discovery device can be an electronic device that includes corresponding hardware structures and/or software modules for performing various functions.
  • the present invention can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented in hardware or computer software to drive hardware depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.
  • the embodiment of the present invention may divide the function modules of the service discovery device and the like according to the foregoing method embodiments.
  • each function module may be divided according to each function, or two or more functions may be integrated into one processing module.
  • the above integrated modules can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of the module in the embodiment of the present invention is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 13A shows a possible structural diagram of the service discovery apparatus 901 involved in the foregoing embodiment, and the service discovery apparatus 901 includes: a receiving unit 902, a processing unit, in a case where each function module is divided by a corresponding function. 903 and a transmitting unit 904.
  • the service discovery device 901 When the service discovery device 901 is the second NAN device, it may implement the method performed by the second NAN device in the fourth embodiment.
  • the receiving unit 902 is configured to support the service discovery device 901 to perform the process 401 in FIG. 7; the processing unit 903 is configured to control the sending unit 904 to support the service discovery device 901 to execute the process 402 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the service discovery device 901 When the service discovery device 901 is the third NAN device, it may implement the method performed by the third NAN device in the fourth embodiment.
  • the receiving unit 902 is configured to support the service discovery device 901 to perform the process 403 in FIG. 8; the processing unit 903 is configured to control the sending unit 904 to support the service discovery device 901 to execute the process 404 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the service discovery device 901 When the service discovery device 901 is the second NAN device, it may implement the method performed by the second NAN device in the above fifth embodiment.
  • the receiving unit 902 is configured to support the service discovery device 901 to perform the process 501 in FIG. 8; the processing unit 903 is configured to control the sending unit 904 to support the service discovery device 901 to execute the process 502 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the service discovery device 901 When the service discovery device 901 is the third NAN device, it may implement the method performed by the third NAN device in the above fifth embodiment.
  • the receiving unit 902 is configured to support the service discovery device 901 to perform the process 503 in FIG. 8; the processing unit 903 is configured to control the transmitting unit 904 to support the service discovery device 901 to execute the process 504 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the service discovery device 901 When the service discovery device 901 is the second NAN device, it may implement the method performed by the second NAN device in the above sixth embodiment.
  • the receiving unit 902 is configured to support the service discovery device 901 to perform the processes 601, 609 in FIG. 9;
  • the processing unit 903 is configured to control the transmitting unit 904 to support the service discovery device 901 to perform the processes 602-605, 610-612 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the service discovery device 901 When the service discovery device 901 is the third NAN device, it may implement the method performed by the third NAN device in the above sixth embodiment.
  • the receiving unit 902 is configured to support the service discovery device 901 to perform the process 605 in FIG. 9; the processing unit 903 is configured to control the transmitting unit 904 to support the service discovery device 901 to perform the processes 606-609 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the service discovery device 901 When the service discovery device 901 is the second NAN device, it may implement the method performed by the second NAN device in the above-described seventh embodiment.
  • the receiving unit 902 is configured to support the service discovery device 901 to perform the processes 701, 705 in FIG. 10; the processing unit 903 is configured to control the transmitting unit 904 to support the service discovery device 901 to perform the process 702 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the service discovery device 901 When the service discovery device 901 is the third NAN device, it may implement the method performed by the third NAN device in the above-described seventh embodiment.
  • the receiving unit 902 is configured to support the service discovery device 901 to perform the process 702 in FIG. 10; the processing unit 903 is configured to control the transmitting unit 904 to support the service discovery device 901 to execute the processes 703-705 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the service discovery device 901 When the service discovery device 901 is the second NAN device, it may implement the method performed by the second NAN device in the above-described Embodiment 8.
  • the receiving unit 902 is configured to support the service discovery device 901 to execute the processes 801, 808 in FIG. 11 and the process 813 in FIG. 12;
  • the processing unit 903 is configured to control the transmitting unit 904 to support the service discovery device 901 to execute the process in FIG. 802-805, 809-811 and process 813 in FIG. All the related content of the steps involved in the foregoing method embodiments may be referred to the functional descriptions of the corresponding functional modules, and details are not described herein again.
  • the service discovery device 901 When the service discovery device 901 is the third NAN device, it may implement the method performed by the third NAN device in the above embodiment 8.
  • the receiving unit 902 is configured to support the service discovery device 901 to perform the processes 805, 811 in FIG. 11 and the process 814 in FIG. 12;
  • the processing unit 903 is configured to control the transmitting unit 904 to support the service discovery device 901 to perform the process in FIG. Processes 805, 811, and process 814 in FIG.
  • each step involved in the above method embodiment All relevant contents of the relevant functions can be referred to the functional description of the corresponding functional modules, and will not be described here.
  • FIG. 13B shows another possible structural diagram of the service discovery apparatus involved in the above embodiment.
  • the service discovery device 911 includes a processing module 912 and a communication module 913.
  • the service discovery device 911 can also include a storage module 914 for storing program codes and data of the service discovery device 911.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 401-402 in FIG. 7 and/or for the methods described herein. Other processes of technology.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 403-404 in FIG. 7 and/or for the methods described herein. Other processes of technology.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 501-502 of FIG. 8 and/or for the methods described herein. Other processes of technology.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 503-504 of FIG. 8 and/or for the methods described herein. Other processes of technology.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 601-605, 609-612 and/or for use in FIG. Other processes of the techniques described herein.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 605-609 of FIG. 9 and/or for the methods described herein. Other processes of technology.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 701-702, 705 and/or for use in FIG. 10 Other processes of the described technology.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 702-705 of FIG. 10 and/or for the methods described herein. Other processes of technology.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 811-805, 808-811 and FIG. 12 in FIG. Process 813 and/or other processes for the techniques described herein.
  • the processing module 912 is configured to control and manage the actions of the service discovery device.
  • the processing module 912 is configured to control the communication module 913 to support the service discovery device to perform the processes 805-808, 811 in FIG. 11 and the process in FIG. 812, 814 and/or other processes for the techniques described herein.
  • the processing module 912 can be a processor or a controller, and can be, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), and an application-specific integrated circuit (Application-Specific). Integrated Circuit (ASIC), Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • the communication module 913 can be implemented by an interface circuit, such as a transceiver, a transceiver circuit, or a communication interface.
  • the storage module 914 can be a memory.
  • the service discovery device may be the service discovery device shown in FIG. 13C.
  • the service discovery device 921 includes a processor 922, an interface circuit 923, a memory 924, and a bus 925.
  • the processor 922, the interface circuit 923, and the memory 924 are connected to each other through a bus 925.
  • the bus 925 may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. Wait.
  • PCI Peripheral Component Interconnect
  • EISA Extended Industry Standard Architecture
  • Wait The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is shown in Figure 13C, but it does not mean that there is only one bus or one type of bus.
  • the disclosed systems, devices, and methods may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interface, device or single
  • the indirect coupling or communication connection of the element may be in the form of electrical, mechanical or other.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
  • the technical solution of the present invention which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
  • the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention.
  • the foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (English abbreviation: ROM, English full name: Read-Only Memory), a random access memory (English abbreviation: RAM, English full name: Random Access Memory), magnetic A variety of media that can store program code, such as a disc or a disc.

Abstract

本发明的实施例提供一种服务发现方法、装置及服务发现装置，涉及通信领域，能够在经过中转的服务发现消息被支持多跳服务发现的NAN设备正确接收的前提下，使不支持多跳服务发现的NAN设备对经过中转的多跳服务发现消息不进行响应，包括：第二NAN设备接收第一NAN设备发送的用于服务发现的第一服务发现消息；第二NAN设备作为为第一NAN设备发起的服务发现进行中转的服务中转设备，根据第一服务发现消息生成并发送用于服务发现的第二服务发现消息。本发明用于发现服务。

Description

一种服务发现方法及服务发现装置 技术领域
本发明涉及通信领域，尤其涉及一种服务发现方法及服务发现装置。
背景技术
伴随着移动互联网时代的来临，社交、本地化、移动成为互联网行业的主流模式。配备无线保真(Wireless-Fidelity，简称：Wi-Fi)接口的移动设备由于其传输速率高的优点，被广泛应用于各个行业。随着Wi-Fi技术的改进，基于Wi-Fi技术的邻居感知网络(Neighbor Awareness Networking，简称：NAN)技术正在成为业界的热点。NAN技术能够在没有控制中心即中心节点的情况下，使得所有参与NAN的设备同步起来，在NAN约定的发现窗口(Discovery window，简称：DW)中进行NAN的维持工作与服务发现工作，这样Wi-Fi设备能够在创建连接之前，不断地发现附近的设备、应用以及信息，用户可以对应用进行配置，来发布自己的信息和申请接受信息。
在NAN簇(Cluster)中典型的应用场景是设备之间在关联之前进行相互的服务发现。为了能够进行设备之间的服务发现，NAN簇中的设备(可称为NAN设备)必须保持同步，才能使NAN簇中的设备在DW中工作于发现信道上并进行服务发现和簇同步。NAN设备可以在DW内通过发送服务发现(Service Descriptor Frame，简称：SDF)消息，通过携带指示服务信息的匹配标识，来告知其所在NAN网络中的其他NAN设备自身需要订阅或者发布的服务，进一步地，通过与某些NAN设备交互SDF消息，进一步确认后续建立交互服务数据的数据链路的信息，其中SDF消息可以为服务发布(SDF Publish)消息、服务查询(SDF Subscribe)消息或服务后续(SDF Follow-Up)消息等。
随着技术的发展，NAN设备从仅支持单跳的服务发现，发展到能够支持多跳的服务发现，但是将SDF消息应用到多跳的服务发现时，虽然支持多跳服务发现的新版NAN设备可以根据所接收到的SDF消息判断该消 息为单跳SDF消息还是多跳SDF消息，并针对该消息进行相应的响应，但由于仅支持单跳服务发现的旧版NAN设备会将被中转的SDF消息识别为NAN中转设备所发送的单跳SDF消息，导致该旧版NAN设备在接收到NAN中转设备转发的多跳SDF消息并且该多跳SDF消息中携带的匹配标识指示的服务信息与旧版NAN设备所需的服务匹配时，该旧版NAN设备会向NAN中转设备针对该多跳SDF消息进行响应，由于NAN中转设备并非该多跳SDF消息所对应服务的服务发起NAN设备，NAN中转设备无法提供该旧版NAN设备所要求的服务，因此NAN中转设备不会对旧版NAN设备的响应做出回复，从而使旧版NAN设备针对该经过中转的多跳SDF消息所产生的响应成为无效响应，导致旧版本NAN设备浪费设备电量与网络资源。
发明内容
本申请提供一种多跳服务发现方法及服务发现装置，能够在经过中转的服务发现消息被支持多跳服务发现的NAN设备正确接收的前提下，使不支持多跳服务发现的NAN设备对经过中转的多跳服务发现消息不进行响应。
为达到上述目的，本申请采用如下技术方案：
第一方面，本发明实施例提供了一种服务发现方法，包括：第二NAN设备接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息与第一服务中转指示信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务中转指示信息用于指示所述服务发现已被中转的次数；
所述第二NAN设备作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包括第二服务标识信息和第二服务中转指示信息；
其中，所述根据所述第一服务发现消息生成所述第二服务发现 消息包括：
所述第二NAN设备根据所述第一服务标识信息生成所述第二服务标识信息，并根据所述第一服务中转指示信息生成所述第二服务中转指示信息，其中，所述第一服务标识信息与所述第二服务标识信息不相同，所述第二服务标识信息用于指示所述第二服务发现消息所订阅或发布的服务，所述第二服务中转指示信息用于指示所述服务发现已被中转的次数。
在第一方面的第一种可能的实现方式中，所述第一服务发现消息还包括最大跳数，所述最大跳数用于指示所述服务发现允许被中转的最大次数；
所述根据所述第一服务发现消息生成用于所述服务发现的第二服务发现消息具体为:
当所述第二NAN设备根据所述第一服务中转指示信息确定所述服务发现已被中转的次数小于所述最大跳数时，所述第二NAN设备根据所述第一服务发现消息生成用于所述服务发现的第二服务发现消息。
结合第一方面第一种可能的实现方式，在第二种可能的实现方式中，所述第二服务发现消息还包括所述最大跳数。
结合第一方面，或者第一方面的第一种至第一方面的第二种中任意一种可能的实现方式，在第三种可能的实现方式中，所述第一服务中转指示信息为第一跳数，所述第二服务中转指示信息为第二跳数，所述服务发现方法还包括：
当所述第一跳数等于零时，所述第二NAN设备根据第一服务标识信息生成第二服务标识信息，并根据所述第一跳数生成所述第二跳数,其中所述第二跳数大于零；
当所述第一跳数大于零时，所述第二NAN设备根据所述第一服务标识信息生成所述第二服务标识信息,并根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于或等于所述第一跳数。
结合第一方面，或者第一方面的第一种至第一方面的第三种中任意一 种可能的实现方式，在第四种可能的实现方式中，所述第一服务发现消息还包括中转有效时间；
所述服务发现方法还包括：
所述第二NAN设备收到所述第一服务发现消息时，开启计时器；
当计时器时间大于或等于所述中转有效时间时，所述第二NAN设备取消发送所述第二服务发现消息。
第二方面，本发明实施例提供了一种服务发现方法，包括：第三NAN设备接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务标识信息与第二服务中转指示信息，所述第二服务标识信息用于指示所述第二服务发现消息对应的服务，所述第二服务中转指示信息用于指示所述服务发现已被中转的次数，所述第二服务发现消息为所述第二NAN设备接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务标识信息与第一服务中转指示信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务中转指示信息用于指示所述服务发现已被中转的次数；其中，所述第一服务标识信息与所述第二服务标识信息不相同；
当所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息确定第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求匹配时，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息。
在第二方面的第一种可能的实现方式中，所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求匹配前，还包括：
所述第三NAN设备根据所述第二服务中转指示信息确定所述 第二服务发现消息为中转的服务发现消息。
在第二方面的第二种可能的实现方式中，所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求是否匹配，包括：
所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息得到第三服务标识信息，所述第三服务标识信息用于指示所述第一NAN设备订阅或发布的服务；
所述第三NAN设备确定所述第三服务标识信息与所述第三NAN设备的服务需求对应的服务是否匹配。
在第二方面的第三种可能的实现方式中，所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求是否匹配，包括：
所述第三NAN设备根据所述第二服务中转指示信息与所述第三NAN设备的服务需求对应的服务生成第四服务标识信息，所述第四服务标识信息用于指示所述第三NAN设备的服务需求对应的服务；
所述第三NAN设备确定所述第四服务标识信息与所述第二服务标识信息是否匹配。
结合第二方面第一种可能的实现方式，在第四种可能的实现方式中，所述第三NAN设备根据所述第二服务中转指示信息确定所述第二服务发现消息为中转的服务发现消息，包括：
所述第三NAN设备根据所述第二服务中转指示信息确定所述服务发现已被中转的次数大于零。
结合第二方面的第一种至第二方面的第四种中任一种可能的实现方式，在第五种可能的实现方式中，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息，包括：
当所述第二服务发现消息为SDF Subscribe服务订阅消息时， 所述第三NAN设备向所述第二NAN设备发送SDF Publish服务发布消息；
当所述第二服务发现消息为SDF Publish服务发布消息时，所述第三NAN设备向所述第二NAN设备发送SDF Follow-up服务后续消息。
结合第二方面第五种可能的实现方式，在第六种可能的实现方式中，所述向所述第二NAN设备发送的SDF Publish服务发布消息中携带多跳服务匹配指示信息，或，所述向所述第二NAN设备发送的SDF Follow-up服务后续消息中携带所述多跳服务匹配指示信息；其中，所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
第三方面，本发明实施例提供了一种服务发现方法，包括：第二NAN设备接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务信息；
所述第二NAN设备作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送用于所述服务发现的第二服务发现消息；
其中，所述根据所述第一服务发现消息生成所述第二服务发现消息包括：
所述第二NAN设备根据所述第一服务标识信息生成所述第二服务标识信息，所述第二服务发现消息包括所述第二服务标识信息与服务多跳指示信息，所述第二服务标识信息用于指示所述第二服务发现消息订阅或发布的服务信息，所述第二服务标识信息与所述第一服务标识信息不相等，所述服务多跳指示信息用于指示所述第二服务发现消息用于中转所述服务发现。
在第三方面的第一种可能的实现方式中，所述第一服务发现消息还包括中转有效时间；所述服务发现方法还包括：
所述第二NAN设备收到所述第一服务发现消息时，开启计时 器；
当计时器时间大于或等于所述中转有效时间时，所述第二NAN设备取消发送所述第二服务发现消息。
第四方面，本发明实施例提供了一种服务发现方法，包括：第三NAN设备接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务标识信息与服务多跳指示信息，所述第二服务标识信息用于指示所述第二服务发现消息订阅或发布的服务信息；所述服务多跳指示信息用于指示所述第二服务发现消息用于中转所述服务发现；所述第二服务发现消息为所述第二NAN设备接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息订阅或发布的服务信息；所述第二服务标识信息与所述第一服务标识信息不相等；
当所述第三NAN设备根据所述服务多跳指示信息确定所述第二服务发现用于中转所述服务发现时，所述第三NAN设备根据所述第二服务标识信息确定所述第一NAN设备订阅或发布的服务与所述第三NAN设备的服务需求是否匹配；
当所述第三NAN设备确定所述第一NAN设备订阅或发布的服务与所述第三NAN设备的服务需求匹配，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息。
在第四方面的第一种可能的实现方式中，所述第三NAN设备根据所述第二服务标识信息确定第一NAN设备订阅或发布的服务与所述第三NAN设备的服务需求是否匹配，包括：
根据所述第二服务标识信息得到所述第一NAN设备订阅或发布的服务对应的第一服务标识信息；
判断所述第一服务标识信息与第三服务标识信息是否匹配，所述第三服务标识信息用于指示所述第三NAN设备的服务需求所订 阅或发布的服务。
在第四方面的第二种可能的实现方式中，所述第三NAN设备根据所述第二服务标识信息确定第一NAN设备订阅或发布的服务与所述第三NAN设备的服务需求是否匹配，包括：
根据第三服务标识信息生成第四服务标识信息，所述第三服务标识信息用于指示所述第三NAN设备的服务需求对应的服务；
判断所述第二服务标识信息与所述第四服务标识信息是否匹配。
结合第四方面，或者第四方面的第一种至第四方面的第二种中任一种可能的实现方式，在第三种可能的实现方式中，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息，包括：
当所述第二服务发现消息为SDF Subscribe服务订阅消息时，所述第三NAN设备向所述第二NAN设备发送SDF Publish服务发布消息；
当所述第二服务发现消息为SDF Publish服务发布消息时，所述第三NAN设备向所述第二NAN设备发送SDF Follow-up服务后续消息。
结合第四方面第三种可能的实现方式，在第四种可能的实现方式中，所述向所述第二NAN设备发送的SDF Publish服务发布消息中携带多跳服务匹配指示信息，所述向所述第二NAN设备发送的SDF Follow-up服务后续消息中携带所述多跳服务匹配指示信息，所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
第五方面，本发明实施例提供了一种服务发现方法，包括：第二NAN设备接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务控制类型信息和第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务控制类型信息用于指示所述第一服务发现消息所订阅或发布的服务的控制类型；
所述第二NAN设备作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务控制类型信息与所述第一服务标识信息，所述第二服务控制类型信息用于指示所述第二服务发现消息对应所订阅或发布的服务的控制类型，所述第二服务控制类型信息与所述第一服务控制类型信息不相同，所述第一服务标识信息用于指示所述第一NAN设备进行所述服务发现订阅或发布的服务。
在第五方面的第一种可能的实现方式中，所述第一服务控制类型信息包括订阅Subscribe或发布Publish或后续Follow-up，所述第二服务控制类型信息包括其他类型，所述其他类型不同于订阅、发布或后续。
在第五方面的第二种可能的实现方式中，所述第一服务控制类型信息包括00或01或10，所述第二服务控制类型信息包括11。
在第五方面的第三种可能的实现方式中，所述第一服务发现消息还包括服务中转指示信息；
所述第二NAN设备生成并发送第二服务发现消息，包括：
当所述第二NAN设备根据所述服务中转指示信息确定中转所述服务发现时，所述第二NAN设备生成并发送所述第二服务发现消息。
结合第五方面第三种可能的实现方式，在第四种可能的实现方式中，所述服务中转指示信息包括第一跳数与最大跳数，所述第一跳数用于指示所述第一服务发现消息对应的服务发现已被中转的次数，所述最大跳数用于指示所述服务发现允许被中转的最大次数；
所述第二NAN设备根据所述服务中转指示信息确定中转所述服务发现，包括：
当所述第一跳数小于所述最大跳数时，所述第二NAN设备确定中转所述服务发现。
结合第五方面第四种可能的实现方式，在第五种可能的实现方式中， 所述第二服务发现消息还包括第二跳数，所述第二跳数用于指示所述第二服务发现消息对应的所述服务发现已被中转的次数。
结合第五方面第五种可能的实现方式，在第六种可能的实现方式中，所述服务发现方法还包括：
当所述第一跳数等于零时，所述第二NAN设备获取所述第二服务控制类型信息，并根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于零；
当所述第一跳数大于零时，所述第二NAN设备根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于或等于所述第一跳数。
结合第五方面，或者第五方面的第一种至第五方面的第六种中任一种可能的实现方式，在第七种可能的实现方式中，所述第一服务发现消息还包括中转有效时间；所述服务发现方法还包括：
所述第二NAN设备收到所述第一服务发现消息时，开启计时器；
当计时器时间大于或等于所述中转有效时间时，所述第二NAN设备取消发送所述第二服务发现消息。
结合第五方面，或者第五方面的第一种至第五方面的第六中任一种可能的实现方式，在第八种可能的实现方式中，所述服务发现方法还包括：
接收第三NAN设备发送的第三服务发现消息，所述第三NAN设备为响应所述第二服务发现消息的NAN设备，所述第三服务发现消息包括第三服务控制类型信息，所述第三服务控制类型信息用于指示所述第三NAN设备的服务需求对应的服务的控制类型；
当所述第二NAN设备确定所述第一NAN设备进行所述服务发现所订阅或发布的服务的控制类型与第三服务控制类型匹配时，所述第二NAN设备向所述第三NAN设备发送第四服务发现消息，所述第四服务发现消息用于向所述第三NAN设备指示所述第三服务控制类型与所述第一NAN设备进行所述服务发现所订阅或发布的服务的控制类型匹配。
第六方面，本发明实施例提供了一种服务发现方法，包括：第三NAN 设备接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务控制类型信息与第一服务标识信息，所述第二服务控制类型信息用于指示所述第二服务发现消息所订阅或发布的服务的控制类型，所述第一服务标识信息用于指示第一NAN设备进行所述服务发现所订阅或发布的服务；所述第二服务发现消息为所述第二NAN设备接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务控制类型信息和所述第一服务标识信息，所述第一服务控制类型信息用于指示所述第一服务发现消息所订阅或发布的服务的控制类型；所述第二服务控制类型信息与所述第一服务控制类型信息不相同；
当所述第三NAN设备根据所述第二服务控制类型信息确定所述第二服务发现消息为中转的服务发现消息时，所述第三NAN设备根据所述第一服务标识信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务是否匹配；
当所述第三NAN设备确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务匹配时，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息。
在第六方面的第一种可能的实现方式中，所述第三NAN设备根据所述第二服务控制类型信息确定所述第二服务发现消息为中转的服务发现消息，包括，
当所述第三NAN设备确定所述第二服务控制类型不为订阅、发布或后续中的任何一个时，所述第三NAN设备确定所述第二服务发现消息为中转的服务发现消息。
结合第六方面第一种可能的实现方式，在第二种可能的实现方式中，所述第二服务发现消息还包括所述第一服务控制类型信息；
所述第三NAN设备根据所述第一服务标识信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务是否匹配，包括：
当所述第一服务控制类型信息为订阅，且所述第三NAN设备的服务需求能够提供所述第一服务标识信息指示的服务时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务匹配；
当所述第一服务控制类型信息为发布，且所述第三NAN设备的服务需求需要使用所述第一服务标识信息指示的服务时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务匹配。
结合第六方面第一种可能的实现方式，在第三种可能的实现方式中，所述第三NAN设备根据所述第一服务标识信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务是否匹配，包括：
所述第三NAN设备根据所述第三NAN设备的服务需求对应的服务生成第五服务标识信息，所述第五服务标识信息用于指示所述第三NAN设备的服务需求对应的服务；
当所述第一服务标识信息与所述第五服务标识信息匹配时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务匹配。
结合第六方面，或者第六方面的第一种或者第六方面第三种中任一种可能的实现方式，在第四种可能的实现方式中，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息，包括：
所述第三NAN设备向所述第二NAN设备发送第三服务发现消息，所述第三服务发现消息包括第三服务控制类型信息，所述第三服务控制类型信息用于指示所述第三NAN设备的服务需求对应的服务的控制类型。
结合第六方面，或者第六方面的第一种或者第六方面的第三种中任一 种可能的实现方式，在第五种可能的实现方式中，所述服务发现方法还包括：
所述第三NAN设备接收所述第二NAN设备发送的第五服务发现消息，所述第五服务发现消息包括所述第一服务控制类型信息；
当所述第一服务控制类型信息为订阅，且所述第三NAN设备的服务需求能够提供所述第二服务标识信息所指示的服务，则确定所述第一NAN设备订阅的服务与所述第三NAN设备的服务需求匹配；
当所述第一服务控制类型信息为发布，且所述第三NAN设备需要使用所述第二服务标识信息所指示的服务，则确定所述第一NAN设备发布的服务与所述第三NAN设备的服务需求匹配。
结合第六方面，或者第六方面的第一种至第六方面的第三种中任一种可能的实现方式，在第六种可能的实现方式中，所述服务匹配响应消息携带多跳服务匹配指示信息，所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
第七方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第二NAN设备，包括：接收单元、发送单元和处理单元，其中，
所述接收单元，被配置为接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息与第一服务中转指示信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务中转指示信息用于指示所述服务发现已被中转的次数；
所述处理单元，被配置为当所述服务发现装置为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备时，根据所述第一服务发现消息生成并控制所述发送单元发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包括第二服务标识信息和第二服务中转指示信息；
其中，所述根据所述第一服务发现消息生成所述第二服务发现消息包括：
根据所述第一服务标识信息生成所述第二服务标识信息，并根据所述第一服务中转指示信息生成所述第二服务中转指示信息，其中，所述第一服务标识信息与所述第二服务标识信息不相同，所述第二服务标识信息用于指示所述第二服务发现消息所订阅或发布的服务，所述第二服务中转指示信息用于指示所述服务发现已被中转的次数。
在第七方面第一种可能的实现方式中，所述第一服务发现消息还包括最大跳数，所述最大跳数用于指示所述服务发现允许被中转的最大次数；
所述处理单元具体被配置为:
当根据所述第一服务中转指示信息确定所述服务发现已被中转的次数小于所述最大跳数时，根据所述第一服务发现消息生成用于所述服务发现的第二服务发现消息。
结合第七方面第一种可能的实现方式，在第二种可能的实现方式中，所述第二服务发现消息还包括所述最大跳数。
结合第七方面，或者第七方面的第一种和第七方面的第二种中任一种可能的实现方式，在第三种可能的实现方式中，所述第一服务中转指示信息为第一跳数，所述第二服务中转指示信息为第二跳数，所述处理单元还被配置为：
当所述第一跳数等于零时，根据第一服务标识信息生成第二服务标识信息，并根据所述第一跳数生成所述第二跳数,其中所述第二跳数大于零；
当所述第一跳数大于零时，根据所述第一服务标识信息生成所述第二服务标识信息,并根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于或等于所述第一跳数。
结合第七方面，或者第七方面的第一种至第七方面的第三种中任一种可能的实现方式，在第四种可能的实现方式中，所述第一服务发现消息还包括中转有效时间；
所述处理单元还被配置为：
当收到所述第一服务发现消息时，开启计时器；
当计时器时间大于或等于所述中转有效时间时，控制所述发送单元取消发送所述第二服务发现消息。
第八方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第三NAN设备，如，所述服务发现装置可以为第二方面的实施例中的第三NAN设备，包括：接收单元、发送单元和处理单元，其中，
所述接收单元，被配置为接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务标识信息与第二服务中转指示信息，所述第二服务标识信息用于指示所述第二服务发现消息对应的服务，所述第二服务中转指示信息用于指示所述服务发现已被中转的次数，所述第二服务发现消息为所述第二NAN设备接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务标识信息与第一服务中转指示信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务中转指示信息用于指示所述服务发现已被中转的次数；其中，所述第一服务标识信息与所述第二服务标识信息不相同；
所述处理单元，被配置为当根据所述第二服务标识信息与所述第二服务中转指示信息确定第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求匹配时，控制所述发送单元向所述第二NAN设备发送服务匹配响应消息。
在第八方面的第一种可能的实现方式中，所述处理单元还被配置为：根据所述第二服务中转指示信息确定所述第二服务发现消息为中转的服务发现消息。
在第八方面的第二种可能的实现方式中，所述处理单元具体被配置为：根据所述第二服务标识信息与所述第二服务中转指示信息得到 第三服务标识信息，所述第三服务标识信息用于指示所述第一NAN设备订阅或发布的服务，确定所述第三服务标识信息与所述第三NAN设备的服务需求对应的服务是否匹配。
在第八方面的第三种可能的实现方式中，所述处理单元具体被配置为：根据所述第二服务中转指示信息与所述服务发现装置的服务需求对应的服务生成第四服务标识信息，所述第四服务标识信息用于指示所述所述服务发现装置的服务需求对应的服务，确定所述第四服务标识信息与所述第二服务标识信息是否匹配。
结合第八方面的第一种可能的实现方式，在第四种可能的实现方式中，所述处理单元具体被配置为：根据所述第二服务中转指示信息确定所述服务发现已被中转的次数大于零。
结合第八方面的第一种至第八方面的第四种中任一种可能的实现方式，在第五种可能的实现方式中，所述处理单元具体被配置为：
当所述第二服务发现消息为SDF Subscribe服务订阅消息时，控制发送单元向所述第二NAN设备发送SDF Publish服务发布消息；
当所述第二服务发现消息为SDF Publish服务发布消息时，控制所述发送单元向所述第二NAN设备发送SDF Follow-up服务后续消息。
结合第八方面第五种可能的实现方式，在第六种可能的实现方式中，所述向所述第二NAN设备发送的SDF Publish服务发布消息中携带多跳服务匹配指示信息，或，所述向所述第二NAN设备发送的SDF Follow-up服务后续消息中携带所述多跳服务匹配指示信息；其中，所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
第九方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第二NAN设备，如，所述服务发现装置可以为第三方面的实施例中的第二NAN设备，包括：接收单元、发送单元和处理单元，其中，
所述接收单元，被配置为接收第一NAN设备发送的用于服务发 现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务信息；
所述处理单元，被配置为当所述服务发现装置为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备时，根据所述第一服务发现消息生成并控制所述发送单元发送用于所述服务发现的第二服务发现消息；
其中，所述根据所述第一服务发现消息生成所述第二服务发现消息包括：
根据所述第一服务标识信息生成所述第二服务标识信息，所述第二服务发现消息包括所述第二服务标识信息与服务多跳指示信息，所述第二服务标识信息用于指示所述第二服务发现消息订阅或发布的服务信息，所述第二服务标识信息与所述第一服务标识信息不相等，所述服务多跳指示信息用于指示所述第二服务发现消息用于中转所述服务发现。
在第九方面的第一种可能的实现方式中，所述第一服务发现消息还包括中转有效时间；所述处理单元还被配置为：收到所述第一服务发现消息时，开启计时器，当计时器时间大于或等于所述中转有效时间时，控制所述发送单元取消发送所述第二服务发现消息。
第十方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第三NAN设备，如，所述服务发现装置可以为第四方面的实施例中的第三NAN设备，包括：接收单元、发送单元和处理单元，其中，
所述接收单元，被配置为接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务标识信息与服务多跳指示信息，所述第二服务标识信息用于指示所述第二服务发现消息订阅或发布的服务信息；所述服务多跳指示信息用于指示所述第二服务发现消息用于中转所述服务发现；所述第二服务发现消息为所述第二NAN设备接收到第一NAN设备发送的用于 所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息订阅或发布的服务信息；所述第二服务标识信息与所述第一服务标识信息不相等；
所述处理单元，被配置为当根据所述服务多跳指示信息确定所述第二服务发现用于中转所述服务发现时，根据所述第二服务标识信息确定所述第一NAN设备订阅或发布的服务与所述服务发现装置的服务需求是否匹配，当确定所述第一NAN设备订阅或发布的服务与所述服务发现装置的服务需求匹配，控制所述发送单元向所述第二NAN设备发送服务匹配响应消息。
在第十方面的第一种可能的实现方式中，所述处理单元具体被配置为：
根据所述第二服务标识信息得到所述第一NAN设备订阅或发布的服务对应的第一服务标识信息；
判断所述第一服务标识信息与第三服务标识信息是否匹配，所述第三服务标识信息用于指示所述服务发现装置的服务需求对应的服务。
在第十方面的第二种可能的实现方式中，所述处理单元具体被配置为：
根据第三服务标识信息生成第四服务标识信息，所述第三服务标识信息用于指示所述服务发现装置的服务需求对应的服务；
判断所述第二服务标识信息与所述第四服务标识信息是否匹配。
结合第十方面，或者第十方面的第一种和第十方面的第二种中任一种可能的实现方式，在第三种可能的实现方式中，所述处理单元具体被配置为：
当所述第二服务发现消息为SDF Subscribe服务订阅消息时，控制所述发送单元向所述第二NAN设备发送SDF Publish服务发布消 息，当所述第二服务发现消息为SDF Publish服务发布消息时，控制所述发送单元向所述第二NAN设备发送SDF Follow-up服务后续消息。
结合第十方面第三种可能的实现方式，在第四种可能的实现方式中，所述向所述第二NAN设备发送的SDF Publish服务发布消息中携带多跳服务匹配指示信息，所述向所述第二NAN设备发送的SDF Follow-up服务后续消息中携带所述多跳服务匹配指示信息，所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
第十一方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第二NAN设备，如，所述服务发现装置可以为第五方面的实施例中的第二NAN设备，包括：接收单元、发送单元和处理单元，其中，
所述接收单元，被配置为接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务控制类型信息和第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务控制类型信息用于指示所述第一服务发现消息所订阅或发布的服务的控制类型；
所述处理单元，被配置为当所述服务发现装置为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备时，根据所述第一服务发现消息生成并控制所述发送单元发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务控制类型信息与所述第一服务标识信息，所述第二服务控制类型信息用于指示所述第二服务发现消息对应所订阅或发布的服务的控制类型，所述第二服务控制类型信息与所述第一服务控制类型信息不相同，所述第一服务标识信息用于指示第一NAN设备进行所述服务发现订阅或发布的服务。
在第十一方面的第一种可能的实现方式中，所述第一服务控制类型 信息包括订阅Subscribe或发布Publish或后续Follow-up，所述第二服务控制类型信息包括其他类型，所述其他类型不同于订阅、发布或后续。
在第十一方面的第二种可能的实现方式中，所述第一服务控制类型信息包括00或01或10，所述第二服务控制类型信息包括11。
在第十一方面的第三种可能的实现方式中，所述第一服务发现消息还包括服务中转指示信息；所述处理单元具体被配置为：
当根据所述服务中转指示信息确定中转所述服务发现时，生成并控制所述发送单元发送所述第二服务发现消息。
结合第十一方面第三种可能的实现方式，在第四种可能的实现方式中，所述服务中转指示信息包括第一跳数与最大跳数，所述第一跳数用于指示所述第一服务发现消息对应的服务发现已被中转的次数，所述最大跳数用于指示所述服务发现允许被中转的最大次数；
所述处理单元具体被配置为：当所述第一跳数小于所述最大跳数时，确定中转所述服务发现。
结合第十一方面第四种可能的实现方式，在第五种可能的实现方式中，所述第二服务发现消息还包括第二跳数，所述第二跳数用于指示所述第二服务发现消息对应的所述服务发现已被中转的次数。
结合第十一方面第五种可能的实现方式，在第六种可能的实现方式中，所述处理单元具体还被配置为：
当所述第一跳数等于零时，获取所述第二服务控制类型信息，并根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于零；
当所述第一跳数大于零时，根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于或等于所述第一跳数。
结合第十一方面，或者第十一方面的第一种至第十一方面的第六种中任一种可能的实现方式，在第七种可能的实现方式中，所述第一服务发现消息还包括中转有效时间；
所述处理单元还被配置为：
收到所述第一服务发现消息时，开启计时器，当计时器时间大 于或等于所述中转有效时间时，控制所述发送单元取消发送所述第二服务发现消息。
结合第十一方面，或者第十一方面的第一种至第十一方面的第六种中任一种可能的实现方式，在第八种可能的实现方式中，所述接收单元还被配置为：
接收第三NAN设备发送的第三服务发现消息，所述第三NAN设备为响应所述第二服务发现消息的NAN设备，所述第三服务发现消息包括第三服务控制类型信息，所述第三服务控制类型信息用于指示所述第三NAN设备的服务需求对应的服务的控制类型；
所述处理单元还被配置为：
当确定所述第一NAN设备进行所述服务发现所订阅或发布的服务的控制类型与第三服务控制类型匹配时，控制所述发送单元向所述第三NAN设备发送第四服务发现消息，所述第四服务发现消息用于向所述第三NAN设备指示所述第三服务控制类型与所述第一NAN设备进行所述服务发现所订阅或发布的服务的控制类型匹配。
第十二方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第三NAN设备，如，所述服务发现装置可以为第六方面的实施例中的第三NAN设备，包括：接收单元、发送单元和处理单元，其中，
所述接收单元，被配置为接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务控制类型信息与第一服务标识信息，所述第二服务控制类型信息用于指示所述第二服务发现消息所订阅或发布的服务的控制类型，所述第一服务标识信息用于指示第一NAN设备进行所述服务发现所订阅或发布的服务，所述第二服务发现消息为所述第二NAN设备接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务控制类型信息和所述第一服务标识信息，所述第一服务控 制类型信息用于指示所述第一服务发现消息所订阅或发布的服务的控制类型；所述第二服务控制类型信息与所述第一服务控制类型信息不相同；
所述处理单元，被配置为当根据所述第二服务控制类型信息确定所述第二服务发现消息为中转的服务发现消息时，根据所述第一服务标识信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务是否匹配，当确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务匹配时，控制所述发送单元向所述第二NAN设备发送服务匹配响应消息。
在第十二方面的第一种可能的实现方式中，所述处理单元具体被配置为：当确定所述第二服务控制类型不为订阅、发布或后续中的任何一个时，确定所述第二服务发现消息为中转的服务发现消息。
结合第十二方面的第一种可能的实现方式，在第二种可能的实现方式中，所述第二服务发现消息还包括所述第一服务控制类型信息；
所述处理单元具体被配置为：
当所述第一服务控制类型信息为订阅，且所述服务发现装置的服务需求能够提供所述第一服务标识信息指示的服务时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务匹配，当所述第一服务控制类型信息为发布，且所述服务发现装置的服务需求需要使用所述第一服务标识信息指示的服务时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务匹配。
结合第十二方面的第一种可能的实现方式，在第三种可能的实现方式中，所述处理单元具体被配置为：
根据所述服务发现装置的服务需求对应的服务生成第五服务标识信息，所述第五服务标识信息用于指示所述第三NAN设备的服务需求对应的服务，当所述第一服务标识信息与所述第五服务标识信 息匹配时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务匹配。
结合第十二方面或者第十二方面的第一种或者第十二方面的第三种中的任一种可能的实现方式，在第四种可能的实现方式中，所述处理单元具体被配置为：
控制所述发送单元向所述第二NAN设备发送第三服务发现消息，所述第三服务发现消息包括第三服务控制类型信息，所述第三服务控制类型信息用于指示所述服务发现装置的服务需求对应的服务的控制类型。
结合第十二方面或者第十二方面的第一种或者第十二方面的第三种中任一种可能的实现方式，在第五种可能的实现方式中，所述接收单元还被配置为：
接收所述第二NAN设备发送的第五服务发现消息，所述第五服务发现消息包括所述第一服务控制类型信息；
所述处理单元具体被配置为：
当所述第一服务控制类型信息为订阅，且所述第三NAN设备的服务需求能够提供所述第二服务标识信息所指示的服务，则确定所述第一NAN设备订阅的服务与所述第三NAN设备的服务需求匹配，当所述第一服务控制类型信息为发布，且所述第三NAN设备需要使用所述第二服务标识信息所指示的服务，则确定所述第一NAN设备发布的服务与所述第三NAN设备的服务需求匹配。
结合第十二方面，或者第十二方面的第一种至第十二方面的第三种中任一种可能的实现方式，在第六种可能的实现方式中，所述服务匹配响应消息携带多跳服务匹配指示信息，所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
第十三方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第二NAN设备，如，所述服务发现装置可以为第一方面的实施例中的第二NAN设备，包括：处理器、接口电路、存储器和总线，所述处理器、接口电路、存储器通过所述总线连接并完成相互间的 通信；所述处理器，用于通过所述接口电路接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息与第一服务中转指示信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务中转指示信息用于指示所述服务发现已被中转的次数；
所述处理器还用于当所述服务发现装置为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备时，根据所述第一服务发现消息生成并通过所述接口电路发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包括第二服务标识信息和第二服务中转指示信息；
其中，所述根据所述第一服务发现消息生成所述第二服务发现消息包括：
根据所述第一服务标识信息生成所述第二服务标识信息，并根据所述第一服务中转指示信息生成所述第二服务中转指示信息，其中，所述第一服务标识信息与所述第二服务标识信息不相同，所述第二服务标识信息用于指示所述第二服务发现消息所订阅或发布的服务，所述第二服务中转指示信息用于指示所述服务发现已被中转的次数。
在第十三方面的第一种可能的实现方式中，所述第一服务发现消息还包括最大跳数，所述最大跳数用于指示所述服务发现允许被中转的最大次数；
所述处理器具体用于:当根据所述第一服务中转指示信息确定所述服务发现已被中转的次数小于所述最大跳数时，根据所述第一服务发现消息生成用于所述服务发现的第二服务发现消息。
结合第十三方面第一种可能的实现方式，在第二种可能的实现方式中，所述第二服务发现消息还包括所述最大跳数。
结合第十三方面，或者第十三方面的第一种和第十三方面的第二种中任一种可能的实现方式，在第三种可能的实现方式中，所述第一服务中转指示信息为第一跳数，所述第二服务中转指示信息为第二跳数， 所述处理器还用于：
当所述第一跳数等于零时，根据第一服务标识信息生成第二服务标识信息，并根据所述第一跳数生成所述第二跳数,其中所述第二跳数大于零，当所述第一跳数大于零时，根据所述第一服务标识信息生成所述第二服务标识信息,并根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于或等于所述第一跳数。
结合第十三方面，或者第十三方面的第一种至第十三方面的第三种中任一种可能的实现方式，在第四种可能的实现方式中，所述第一服务发现消息还包括中转有效时间；
所述处理器还用于：
当通过所述接口电路收到所述第一服务发现消息时，开启计时器；当计时器时间大于或等于所述中转有效时间时，取消发送所述第二服务发现消息。
第十四方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第三NAN设备，如，所述服务发现装置可以为第二方面的实施例中的第三NAN设备，其特征在于，包括：处理器、接口电路、存储器和总线，所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
所述处理器，用于通过所述接口电路接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务标识信息与第二服务中转指示信息，所述第二服务标识信息用于指示所述第二服务发现消息对应的服务，所述第二服务中转指示信息用于指示所述服务发现已被中转的次数，所述第二服务发现消息为所述服务发现装置接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务标识信息与第一服务中转指示信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务中转指示信息用于指示所述 服务发现已被中转的次数；其中，所述第一服务标识信息与所述第二服务标识信息不相同；
所述处理器，还用于当根据所述第二服务标识信息与所述第二服务中转指示信息确定第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求匹配时，通过所述接口电路向所述第二NAN设备发送服务匹配响应消息。
在第十四方面的第一种可能的实现方式中，所述处理器还用于：
根据所述第二服务中转指示信息确定所述第二服务发现消息为中转的服务发现消息。
在十四方面第二种可能的实现方式中，所述处理器具体用于：
根据所述第二服务标识信息与所述第二服务中转指示信息得到第三服务标识信息，所述第三服务标识信息用于指示所述第一NAN设备订阅或发布的服务，确定所述第三服务标识信息与所述第三NAN设备的服务需求对应的服务是否匹配。
在十四方面第三种可能的实现方式中，所述处理器具体用于：
根据所述第二服务中转指示信息与所述服务发现装置的服务需求对应的服务生成第四服务标识信息，所述第四服务标识信息用于指示所述所述服务发现装置的服务需求对应的服务，确定所述第四服务标识信息与所述第二服务标识信息是否匹配。
结合第十四方面第一种可能的实现方式，在第四种可能的实现方式中，所述处理器具体用于：根据所述第二服务中转指示信息确定所述服务发现已被中转的次数大于零。
结合第十四方面的第一种至第十四方面的第四种中任一种可能的实现方式，在第五种可能的实现方式中，所述处理器具体用于：
当所述第二服务发现消息为SDF Subscribe服务订阅消息时，通过所述接口电路向所述第二NAN设备发送SDF Publish服务发布消息；
当所述第二服务发现消息为SDF Publish服务发布消息时，通过所述接口电路向所述第二NAN设备发送SDF Follow-up服务后续 消息。
结合第十四方面第五种可能的实现方式，在第六种可能的实现方式中，所述向所述第二NAN设备发送的SDF Publish服务发布消息中携带多跳服务匹配指示信息，或，所述向所述第二NAN设备发送的SDF Follow-up服务后续消息中携带所述多跳服务匹配指示信息；其中所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
第十五方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第二NAN设备，如，所述服务发现装置可以为第三方面的实施例中的第二NAN设备，其特征在于，包括：处理器、接口电路、存储器和总线，所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
所述处理器，用于通过所述接口电路接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务信息；
所述处理器还用于当所述服务发现装置为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备时，根据所述第一服务发现消息生成并通过所述接口电路发送用于所述服务发现的第二服务发现消息；
其中，所述根据所述第一服务发现消息生成所述第二服务发现消息包括：根据所述第一服务标识信息生成所述第二服务标识信息，所述第二服务发现消息包括所述第二服务标识信息与服务多跳指示信息，所述第二服务标识信息用于指示所述第二服务发现消息订阅或发布的服务信息，所述第二服务标识信息与所述第一服务标识信息不相等，所述服务多跳指示信息用于指示所述第二服务发现消息用于中转所述服务发现。
在十五方面第一种可能的实现方式中，所述第一服务发现消息还包括中转有效时间；所述处理器还用于：当通过所述接口电路收到所 述第一服务发现消息时，开启计时器，当计时器时间大于或等于所述中转有效时间时，取消发送所述第二服务发现消息。
第十六方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第三NAN设备，如，所述服务发现装置可以为第四方面的实施例中的第三NAN设备，包括：处理器、接口电路、存储器和总线，所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
所述处理器，用于通过所述接口电路接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务标识信息与服务多跳指示信息，所述第二服务标识信息用于指示所述第二服务发现消息订阅或发布的服务信息；所述服务多跳指示信息用于指示所述第二服务发现消息用于中转所述服务发现；所述第二服务发现消息为所述服务发现装置接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息订阅或发布的服务信息；所述第二服务标识信息与所述第一服务标识信息不相等；
所述处理器，还用于当根据所述服务多跳指示信息确定所述第二服务发现用于中转所述服务发现时，根据所述第二服务标识信息确定所述第一NAN设备订阅或发布的服务与所述服务发现装置的服务需求是否匹配，当确定所述第一NAN设备订阅或发布的服务与所述服务发现装置的服务需求匹配，通过所述接口电路向所述第二NAN设备发送服务匹配响应消息。
在十六方面的第一种可能的实现方式中，所述处理器具体用于：
根据所述第二服务标识信息得到所述第一NAN设备订阅或发布的服务对应的第一服务标识信息；
判断所述第一服务标识信息与第三服务标识信息是否匹配，所 述第三服务标识信息用于指示所述服务发现装置的服务需求对应的服务。
在十六方面的第二种可能的实现方式中，所述处理器具体用于：
根据第三服务标识信息生成第四服务标识信息，所述第三服务标识信息用于指示所述服务发现装置的服务需求对应的服务；判断所述第二服务标识信息与所述第四服务标识信息是否匹配。
结合第十六方面，或者第十六方面的第一种和第十六方面的第二种中任一种可能的实现方式，在第三种可能的实现方式中，所述处理器具体用于：当所述第二服务发现消息为SDF Subscribe服务订阅消息时，通过所述接口电路向所述第二NAN设备发送SDF Publish服务发布消息，当所述第二服务发现消息为SDF Publish服务发布消息时，通过所述接口电路向所述第二NAN设备发送SDF Follow-up服务后续消息。
结合第十六方面第三种可能的实现方式，在第四可能的实现方式中，所述向所述第二NAN设备发送的SDF Publish服务发布消息中携带多跳服务匹配指示信息，所述向所述第二NAN设备发送的SDF Follow-up服务后续消息中携带所述多跳服务匹配指示信息，所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
第十七方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第二NAN设备，如，所述服务发现装置可以为第五方面的实施例中的第二NAN设备，包括：处理器、接口电路、存储器和总线，所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
所述处理器，用于通过所述接口电路接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务控制类型信息和第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务控制类型信息用于指示所述第一服务发现消息所订阅或发布的服 务的控制类型；
所述处理器还用于当所述服务发现装置为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备时，根据所述第一服务发现消息生成并通过所述接口电路发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务控制类型信息与所述第一服务标识信息，所述第二服务控制类型信息用于指示所述第二服务发现消息对应所订阅或发布的服务的控制类型，所述第二服务控制类型信息与所述第一服务控制类型信息不相同，所述第一服务标识信息用于指示第一NAN设备进行所述服务发现订阅或发布的服务。
在第十七方面的第一种可能的实现方式中，所述第一服务控制类型信息包括订阅Subscribe或发布Publish或后续Follow-up，所述第二服务控制类型信息包括其他类型，所述其他类型不同于订阅、发布或后续。
在第十七方面第二种可能的实现方式中，所述第一服务控制类型信息包括00或01或10，所述第二服务控制类型信息包括11。
在第十七方面第三种可能的实现方式中，所述第一服务发现消息还包括服务中转指示信息；所述处理器具体用于：当根据所述服务中转指示信息确定中转所述服务发现时，生成并通过所述接口电路发送所述第二服务发现消息。
结合第十七方面第三种可能的实现方式，在第四种可能的实现方式中，所述服务中转指示信息包括第一跳数与最大跳数，所述第一跳数用于指示所述第一服务发现消息对应的服务发现已被中转的次数，所述最大跳数用于指示所述服务发现允许被中转的最大次数；
所述处理器具体用于：当所述第一跳数小于所述最大跳数时，确定中转所述服务发现。
结合第十七方面第四种可能的实现方式，在第五种可能的实现方式中，所述第二服务发现消息还包括第二跳数，所述第二跳数用于指示所述第二服务发现消息对应的所述服务发现已被中转的次数。
结合第十七方面第五种可能的实现方式，在第六种可能的实现方式中，所述处理器还用于：
当所述第一跳数等于零时，获取所述第二服务控制类型信息，并根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于零；
当所述第一跳数大于零时，根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于或等于所述第一跳数。
结合第十七方面，或者第十七方面的第一种至第十七方面的第六种中任一种可能的实现方式，在第七种可能的实现方式中，所述第一服务发现消息还包括中转有效时间；所述处理器还用于：通过所述接口电路收到所述第一服务发现消息时，开启计时器，当计时器时间大于或等于所述中转有效时间时，取消发送所述第二服务发现消息。
结合第十七方面，或者第十七方面的第一种至第十七方面的第六种中任一种可能的实现方式，在第八种可能的实现方式中，所述处理器还用于：通过所述接口电路接收第三NAN设备发送的第三服务发现消息，所述第三NAN设备为响应所述第二服务发现消息的NAN设备，所述第三服务发现消息包括第三服务控制类型信息，所述第三服务控制类型信息用于指示所述第三NAN设备的服务需求对应的服务的控制类型；当确定所述第一NAN设备进行所述服务发现所订阅或发布的服务的控制类型与第三服务控制类型匹配时，通过所述接口电路向所述第三NAN设备发送第四服务发现消息，所述第四服务发现消息用于向所述第三NAN设备指示所述第三服务控制类型与所述第一NAN设备进行所述服务发现所订阅或发布的服务的控制类型匹配。
第十八方面，本发明的实施例提供了一种服务发现装置，所述服务发现装置为第三NAN设备，如，所述服务发现装置可以为第六方面的实施例中的第三NAN设备，包括：处理器、接口电路、存储器和总线，所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
所述处理器，用于通过所述接口电路接收第二NAN设备发送的 用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务控制类型信息与第一服务标识信息，所述第二服务控制类型信息用于指示所述第二服务发现消息所订阅或发布的服务的控制类型，所述第一服务标识信息用于指示第一NAN设备进行所述服务发现所订阅或发布的服务，所述第二服务发现消息为所述服务发现装置接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务控制类型信息和所述第一服务标识信息，所述第一服务控制类型信息用于指示所述第一服务发现消息所订阅或发布的服务的控制类型；所述第二服务控制类型信息与所述第一服务控制类型信息不相同；
所述处理器还用于当根据所述第二服务控制类型信息确定所述第二服务发现消息为中转的服务发现消息时，根据所述第一服务标识信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务是否匹配，当确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务匹配时，通过所述接口电路向所述第二NAN设备发送服务匹配响应消息。
在第十八面第一种可能的实现方式中，所述处理器具体用于：
当确定所述第二服务控制类型不为订阅、发布或后续中的任何一个时，确定所述第二服务发现消息为中转的服务发现消息。
结合第十八方面第一种可能的实现方式，在第二种可能的实现方式中，所述第二服务发现消息还包括所述第一服务控制类型信息；
所述处理器具体用于：当所述第一服务控制类型信息为订阅，且所述服务发现装置的服务需求能够提供所述第一服务标识信息指示的服务时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务匹配，当所述第一服务控制类型信息为发布，且所述服务发现装置的服务需求需 要使用所述第一服务标识信息指示的服务时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务匹配。
结合第十八方面第一种可能的实现方式，在第三种可能的实现方式中，所述处理器具体用于：根据所述服务发现装置的服务需求对应的服务生成第五服务标识信息，所述第五服务标识信息用于指示所述第三NAN设备的服务需求对应的服务，当所述第一服务标识信息与所述第五服务标识信息匹配时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述服务发现装置的服务需求对应的服务匹配。
结合第十八方面或者第十八方面的第一种或者第十八方面的第三种中任一种可能的实现方式，在第四种可能的实现方式中，所述处理器具体用于：通过所述接口电路向所述第二NAN设备发送第三服务发现消息，所述第三服务发现消息包括第三服务控制类型信息，所述第三服务控制类型信息用于指示所述服务发现装置的服务需求对应的服务的控制类型。
结合第十八方面或者第十八方面的第一种或者第十八方面的第三种中任一种可能的实现方式，在第五种可能的实现方式中，所述处理器还用于：通过所述接口电路接收所述第二NAN设备发送的第五服务发现消息，所述第五服务发现消息包括所述第一服务控制类型信息，当所述第一服务控制类型信息为订阅，且所述第三NAN设备的服务需求能够提供所述第二服务标识信息所指示的服务，则确定所述第一NAN设备订阅的服务与所述第三NAN设备的服务需求匹配，当所述第一服务控制类型信息为发布，且所述第三NAN设备需要使用所述第二服务标识信息所指示的服务，则确定所述第一NAN设备发布的服务与所述第三NAN设备的服务需求匹配。
结合第十八方面，或者第十八方面的第一种至第十八方面的第三种中任一种可能的实现方式，在第六种可能的实现方式中，所述服务匹配响应消息携带多跳服务匹配指示信息，所述多跳服务匹配指示信息用 于指示所述服务匹配响应消息用于响应中转的服务发现消息。
本发明实施例提供的服务发现方法、装置及服务发现装置，能够将第一NAN设备进行服务发现所订阅或发布的服务与第三NAN设备自身服务需求进行匹配，当匹配成功时根据第一NAN设备进行服务发现订阅或发布的服务进行响应。同时在经过中转的服务发现消息被支持多跳服务发现的NAN设备正确接收的前提下，使不支持多跳服务发现的NAN设备对经过中转的多跳服务发现消息不进行响应。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本发明的实施例所提供的一种NAN网络的示意性结构图；
图2为本发明的实施例所提供的一种NAN网络设备服务发现方法的示意性流程图；
图3为本发明的另一实施例所提供的一种NAN网络的示意性结构图；
图4为本发明的另一实施例所提供的一种NAN网络设备服务发现方法的示意性流程图；
图5为本发明的另一实施例所提供的一种NAN网络设备服务发现方法的示意性流程图；
图6为本发明的另一实施例所提供的一种NAN网络的示意性结构图；
图7为本发明的实施例所提供的一种服务发现方法的示意性流程图；
图8为本发明的另一实施例所提供的一种服务发现方法的示意性流程图；
图9为本发明的另一实施例所提供的一种服务发现方法的示意性流程图；
图10为本发明的另一实施例所提供的一种服务发现方法的示意性流程图；
图11为本发明的另一实施例所提供的一种服务发现方法的示意性流程图；
图12为本发明的另一实施例所提供的一种服务发现方法的示意性流程图；
图13A为本发明的实施例所提供的一种服务发现装置的示意性结构图；
图13B为本发明的另一实施例所提供的另一种服务发现装置的示意性结构图；
图13C为本发明的另一实施例所提供的一种服务发现装置的示意性结构图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
为了便于清楚描述本发明实施例的技术方案，在本发明的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分，本领域技术人员可以理解“第一”、“第二”等字样并不是在对数量和执行次序进行限定。
如本申请所使用的，术语“组件”、“模块”、“系统”等等旨在指代计算机相关实体，该计算机相关实体可以是硬件、固件、硬件和软件的结合、软件或者运行中的软件。例如，组件可以是，但不限于是：在处理器上运行的处理、处理器、对象、可执行文件、执行中的线程、程序和/或计算机。作为示例，在计算设备上运行的应用和该计算设备都可以是组件。一个或多个组件可以存在于执行中的过程和/或线程中，并且组件可以位于一个计算机中以及/或者分布在两个或更多个计算机之间。此外，这些组件能够从在其上具有各种数据结构的各种计算机可读介质中执行。这些 组件可以通过诸如根据具有一个或多个数据分组(例如，来自一个组件的数据，该组件与本地系统、分布式系统中的另一个组件进行交互和/或以信号的方式通过诸如互联网之类的网络与其它系统进行交互)的信号，以本地和/或远程过程的方式进行通信。
此外，本申请结合无线网络设备来描述各个方面，该无线网络设备可以为基站，基站可以用于与一个或多个用户设备进行通信，也可以用于与一个或多个具有部分用户设备功能的基站进行通信(比如宏基站与微基站，如接入点，之间的通信)；该无线网络设备还可以为用户设备，用户设备可以用于一个或多个用户设备进行通信(比如D2D通信)，也可以用于与一个或多个基站进行通信。用户设备还可以称为用户终端，并且可以包括系统、用户单元、用户站、移动站、移动无线终端、移动设备、节点、设备、远程站、远程终端、终端、无线通信设备、无线通信装置或用户代理的功能中的一些或者所有功能。用户设备可以是蜂窝电话、无绳电话、会话发起协议(session initiation protocol，简称：SIP)电话、智能电话、无线本地环路(wireless local loop，简称：WLL)站、个人数字助理(personal digital assistant，简称：PDA)、膝上型计算机、手持式通信设备、手持式计算设备、卫星无线设备、无线调制解调器卡和/或用于在无线系统上进行通信的其它处理设备。基站还可以称为接入点、节点、节点B、演进节点B(eNB)或某种其它网络实体，并且可以包括以上网络实体的功能中的一些或所有功能。基站可以通过空中接口与无线终端进行通信。该通信可以通过一个或多个扇区来进行。基站可以通过将所接收的空中接口帧转换成IP分组，来用作无线终端和接入网络的其余部分之间的路由器，其中所述接入网络包括互联网协议(internet protocol，简称：IP)网络。基站还可以对空中接口属性的管理进行协调，并且还可以是有线网络和无线网络之间的网关。
本申请将围绕可包括多个设备、组件、模块等的系统来呈现各个方面、实施例或特征。应当理解和明白的是，各个系统可以包括另外的设备、组件、模块等，并且/或者可以并不包括结合附图讨论的所有设备、组件、模块等。此外，还可以使用这些方案的组合。
另外，在本发明实施例中，“示例的”一词用于表示作例子、例证或说明。本申请中被描述为“示例”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用示例的一词旨在以具体方式呈现概念。
本发明实施例中，信息(information)，信号(signal)，消息(message)，信道(channel)有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。“的(of)”，“相应的(corresponding，relevant)”和“对应的(corresponding)”有时可以混用，应当指出的是，在不强调其区别时，其所要表达的含义是一致的。
本发明实施例描述的网络架构以及业务场景是为了更加清楚的说明本发明实施例的技术方案，并不构成对于本发明实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本发明实施例提供的技术方案对于类似的技术问题，同样适用。
本发明实施例既可以应用于时分双工(time division duplexing，简称：TDD)的场景，也可以适用于频分双工(frequency division duplexing，简称：FDD)的场景。
本发明实施例依托无线通信网络中4G网络的场景进行说明，应当指出的是，本发明实施例中的方案还可以应用于其他无线通信网络中，相应的名称也可以用其他无线通信网络中的对应功能的名称进行替代。
伴随着移动互联网时代的来临，社交、本地化、移动成为互联网行业的主流模式。配备无线保真(Wireless-Fidelity，简称Wi-Fi)接口的移动设备由于其传输速率高的优点，被广泛应用于各个行业。随着Wi-Fi技术的改进，基于Wi-Fi技术的邻居感知网络(Neighbor Awareness Networking，简称：NAN)技术正在成为业界的热点。NAN技术能够在在没有中心节点的情况下，使得所有参与NAN的设备同步起来，在NAN约定的发现窗口(Discovery window，简称：DW)中进行NAN的维持工作与服务发现工作，这样Wi-Fi设备能够在创建连接之前，不断地发现附近的设备、应用以及信息，用户可以对应用进行配置，来发布自己的信息和申请接受信息。多个NAN设备组成的NAN网络称为NAN簇，同一个NAN簇内的 设备具有相同的簇标识，每个设备具有自身的属性，包括：角色(Role)和状态(State)。Role包括主设备(Master)和非主设备(non-Master)两类，State包括同步(Synchronization，简称：Sync)和非同步(non-Synchronization，简称：non-Sync)两种。Sync状态的设备负责维护簇同步，Master一定是Sync状态，而non-Master可以是Sync或non-Sync状态。每个设备还包括主设备意愿值(Master Rank，简称：MR)，在NAN簇中MR最大的Master成为锚主设备(Anchor Master，简称：AM)，所有其它设备与AM在时间上保持同步，从而保证了整个NAN簇的同步。
在NAN簇中典型的应用场景是设备之间在关联之前进行相互的服务发现。为了能够进行设备之间的服务发现，NAN簇中的设备必须保持同步，从而使NAN簇中的设备在特定时间段工作于NAN的发现信道并保持醒来(awake)状态，例如，NAN的发现信道为信道6，设备只有在DW到达时才会醒来，在发现信道上进行服务发现和簇同步；而在DW之外，除主设备之外的其它设备均可处于休眠状态。
NAN网络中的设备可以通过在DW内发送服务发现(Service Descriptor Frame，简称：SDF)消息来告示其他NAN网络中的设备自身设备状态的改变，即告知其所在NAN网络中的其他NAN设备自身需要订阅或者发布的服务，进一步地，通过与某些NAN设备交互服务发现消息，进一步确认后续建立交互服务数据的数据链路的信息。其中服务发现消息所携带的信息可以包含两个方面的信息：一种是指示服务的信息，可以通过服务标识或者服务名称进行指示；另一种是指示对该服务的需求情况，可以通过服务发现消息的服务控制类型来体现，例如，在现有的NAN标准中，服务发现消息所携带服务的控制类型可以为服务发布(SDF Publish)、服务订阅(SDF Subscribe)，以及服务后续(SDF Follow-Up)。对于接收到服务发现消息的NAN设备，只有上述两方面的信息都能够匹配时才能够确认服务匹配成功。具体地，当一个NAN设备可以提供其指示的服务，发送服务发布消息，该NAN设备可以使周围需要使用该服务的NAN设备接收所述服务发布消息后确认服务匹配成功，从而可以建立进一步的数据连接交互该服务订阅或发布的服务数据，而周围同样提供该 服务的NAN设备则不会响应所述服务发布消息；服务查询消息表示该NAN设备需要使用其指示的服务，通过发送服务订阅消息来使周围能够提供该服务的NAN设备接收所述服务订阅消息后确认服务匹配，从而可以建立进一步的数据连接交互该服务订阅或发布的服务数据，而周围同样需要使用该服务的NAN设备不会进行响应，接收到服务发现消息的设备可以根据服务发现消息进行服务发现订阅或发布得服务与自身提供或需要的服务进行匹配，当匹配成功时，接收到服务发现消息的设备对发送服务发现消息的设备进行响应。
实施例一：
本发明的实施例提供了一种NAN网络设备服务发现方法，如附图1、附图2所示，NAN网络包括服务发起NAN设备101与第一服务响应设备102，该方法包括：
201、服务发起NAN设备发送服务发现消息。
其中服务发起NAN设备根据自身订阅或者发布的服务发送服务发现消息，服务发现消息包括服务发起NAN设备订阅或者发布的服务的信息，示例性的，服务发现消息中携带指示服务发起NAN设备订阅或者发布服务的匹配标识，服务发起NAN设备广播发送所述服务发现消息，处于所述服务发起NAN设备的信号覆盖范围内的第一服务响应设备可以接收到该服务发现消息。
202、第一服务响应设备接收服务发现消息并根据服务发现消息进行匹配。
第一服务响应设备根据服务发现消息中服务发起NAN设备订阅或者发布的服务的信息，与自身需求或能够提供的服务进行匹配。
203、第一服务响应设备向服务发起NAN设备发送服务响应消息，向服务发起NAN设备进行响应。
随着技术的发展，当NAN设备仅支持单跳的服务发现时，由于WiFi技术的限制，其传输距离只能局限于在0～100米，在一些较大范围的场景下无法很好地应用，例如在大型商场、体育馆中，由于受限于WiFi的传输距离，使得NAN的应用只能局限于一块区域的用户。因此进一步考虑使 NAN设备支持多跳的NAN数据链路。
如附图3所示，本发明的实施例提供了一种NAN网络，其中服务发起NAN设备(本文中也称为第一NAN设备)101、服务中转NAN设备(本文中也称为第二NAN设备)103、第二服务响应设备104支持多跳服务发现(本文中也称为第三NAN设备),第三服务响应设备105仅支持单跳服务发现。
如附图3、附图4所示，针对服务发起NAN设备101、服务中转NAN设备103、第二服务响应设备104，本发明的实施例提供了一种多跳服务发现方法，该方法包括：
204、服务发起NAN设备发送服务发现消息。
其中第一NAN设备根据自身订阅或者发布的服务发送服务发现消息，服务发现消息包括第一NAN设备订阅或者发布服务的信息。具体内容参照上述步骤201，在此不再赘述。
205、服务中转NAN设备根据接收到的服务发现消息向第二服务响应设备中转服务发现消息。
206、第二服务响应设备根据服务发现消息进行匹配。
第二服务响应设备根据服务发现消息中服务发起NAN设备订阅或者发布服务的信息，与自身能够提供的服务进行匹配。当匹配成功时，执行如下步骤207。
207、第二服务响应设备向服务中转NAN设备发送针对服务发起NAN设备的服务响应消息，向服务发起NAN设备进行响应。
208、服务中转NAN设备向服务发起NAN设备转发所述服务响应消息。
在上述方法中，支持多跳服务发现的服务中转NAN设备与第二服务响应设备，可以根据所接收到的服务发现消息判断该消息为单跳服务发现消息还是多跳服务发现消息。当该服务发现消息需要进行转发时对其进行转发，当该服务发现消息携带的服务与自身需求或能够提供的服务匹配时，向中转该服务发现消息的服务中转NAN设备发送针对服务发起NAN设备的服务响应消息，使服务中转NAN设备可以向服务发起NAN设备转发该 服务响应消息，使服务发起NAN设备可以收到第二服务响应设备做出的响应。
实施例二：
如附图3、附图5所示，针对服务发起NAN设备101、服务中转NAN设备103、第三服务响应设备105，本发明的实施例提供了一种NAN网络中的设备进行服务发现的方法，该方法包括：
209、服务发起NAN设备发送服务发现消息。
其中服务发起NAN设备根据自身订阅或者发布的服务发送服务发现消息，服务发现消息包括服务发起NAN设备需求服务的信息
210、服务中转NAN设备接收服务发现消息并向第三服务响应设备中转服务发现消息。
211、第三服务响应设备根据服务发现消息进行匹配。
第三服务响应设备根据服务发现消息中服务发起NAN设备订阅或者发布服务的信息，与自身需求或能够提供的服务进行匹配。当匹配成功时，执行如下步骤212.
212、第三服务响应设备向服务中转NAN设备发送针对服务中转NAN设备的服务响应消息，向服务中转NAN设备进行响应。
在上述方法中，由于仅支持单跳服务发现的第三服务响应设备在接收到经过中转的服务发现消息时，会将被中转的服务发现消息识别为由服务中转NAN设备所发送的单跳服务发现消息，从而使该第三服务响应设备将经过中转的服务发现消息与自身需求或能够提供的服务进行匹配，当匹配成功时，第三服务响应设备会将服务中转NAN设备视为服务发起NAN设备，并向服务中转NAN设备发送针对服务中转NAN设备进行响应的服务响应消息。由于服务中转NAN设备无法提供第三服务响应设备所要求的服务，因此服务中转NAN设备不会对第三服务响应设备的响应做出回复，从而使第三服务响应设备针对该经过中转的多跳服务发现消息所产生的响应成为无效响应，导致第三服务响应设备与服务中转NAN设备浪费设备资源与网络资源。
为了在经过中转的服务发现消息能够被支持多跳服务发现的NAN设 备正确接收的前提下，使不支持多跳服务发现的NAN设备对经过中转的多跳服务发现消息不进行响应，本发明的实施例通过在中转服务发现消息的NAN设备中对服务发现消息所携带的服务标识信息或服务控制类型信息进行更改，当接收到经过中转的服务发现消息的NAN设备支持多跳服务发现时，能够根据服务发现消息获得更改前的服务标识信息或服务控制类型信息，并将该更改前的服务标识信息或服务控制类型信息与自身需求或能够提供的服务进行匹配，并在匹配时进行响应；当接收到经过中转的服务发现消息的NAN设备不支持多跳服务发现时，无法获得更改前的服务标识信息或服务控制类型信息，也就无法根据更改前的服务标识信息或服务控制类型信息与自身需求或能够提供的服务进行匹配，从而使不支持多跳服务发现的NAN设备对经过中转的多跳服务发现消息不进行响应。
实施例三：
本发明的实施例可应用于如图6所示的通信系统，该通信系统包括：第一NAN设备301、第二NAN设备302和第三NAN设备303，其中第二NAN设备302与第三NAN设备303均为支持多跳服务发现的NAN设备，第二NAN设备302与第三NAN设备303均可以作为中转设备向其他NAN设备转发需要进行中转的服务发现消息，同时也可以作为中转设备向其他NAN设备提供数据链路中转。需要说明的是，第二NAN设备302与第三NAN设备303均可以对与其匹配的服务发现消息进行响应。
在本发明的各实施例中，示例性地，第一NAN设备301可以为服务发起NAN设备，用于发送服务发现消息，以进行服务发现，即，以向其他设备发布其订阅的(也可理解为需求的)或其发布的(也可理解为能够提供的)服务；第二NAN设备302作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备；第三NAN设备303为收到所述第二NAN设备302中转的用于所述服务发现的消息的设备，第三NAN设备303可以为支持多跳服务发现的NAN设备(如图3中所示的第二服务响应设备104)，可以对与其匹配的服务发现消息进行响应
实施例四：
为了解决上述问题，如附图7所示，本发明的实施例提供了一种多跳 服务发现方法，应用于上述实施例提供的通信系统中，该方法包括：
401、第二NAN设备接收第一NAN设备发送的用于服务发现的第一服务发现消息，其中第一服务发现消息包括第一服务标识信息与第一服务中转指示信息。第一服务标识信息用于指示所述第一服务发现消息对应的服务(即：所述第一服务发现消息订阅或发布的服务)，第一服务中转指示信息用于指示服务发现已被中转的次数。
其中，第一服务发现消息用于服务发现，指第一服务发现消息用于向位于同一NAN网络中的其他NAN设备告知自身设备状态的改变，即告知第一NAN设备自身需要订阅或者发布的服务或向其他NAN设备做出的回应如后续等，进一步地，第一NAN设备还可以通过向其他NAN设备发送第一服务发现消息，以进一步确认建立交互服务数据的数据链路的信息。
具体的，第一NAN设备发送第一服务发现消息，第一NAN设备可以在其所在的NAN网络内广播发送第一服务发现消息，使处于所述第一NAN设备的信号覆盖范围内的第二NAN设备可以接收到该第一服务发现消息；也可以以单播的形式向第二NAN设备发送第一服务发现消息，只要第二NAN设备接收到所述第一服务发现消息即可。
具体的，接收到第一服务发现消息的NAN设备可以根据第一服务标识信息将第一服务发现消息发布或订阅的服务与接收到第一服务发现消息的NAN设备需求或能够提供的服务进行匹配。第一服务标识信息可以包括第一服务发现消息所携带的进行服务发现订阅或发布的服务的信息。接收到第一服务发现消息的NAN设备对在第一服务发现消息进行匹配时，需要对进行服务发现订阅或发布的服务的信息以及该NAN设备对服务的需求情况即服务的控制类型进行匹配，当匹配成功时，根据接收到的第一服务发现消息进行响应。其中进行服务发现订阅或发布的服务，可以为第一NAN设备订阅或发布的服务，可以包括服务标识或者服务名称；服务的控制类型可以为服务发布、服务订阅以及服务后续。
具体的，第一服务中转指示信息用于指示服务发现已被中转的次数，其中服务发现可以指通过第一服务发现消息指示第一NAN设备能够提供或订阅的服务。
服务发现被中转，具体可以指发送第一服务发现消息的设备可以不是第一服务发现消息对应的能够提供或订阅的服务的设备(也可理解为生成第一服务发现消息的设备)，第一服务发现消息可以由一个服务中转设备发送，在这里第二NAN设备作为中转第一服务发现消息的服务中转设备，该服务中转设备可能是接收到用于服务发现的服务发现消息后，对所述服务发现消息中的服务信息(如服务标识信息等)进行进一步地扩散，也可能是接收到其他服务中转设备发送的中转的服务发现消息后，对其中的服务信息进行进一步扩散。中转的服务发现消息中的服务信息可以与原始的服务发现消息中的服务信息不同或相同。当一个服务中转设备接收服务发现消息并发送另一个服务发现消息对所接收的服务发现消息用于服务发现的服务信息进行扩散时，也称对服务发现进行中转。所述第一服务发现消息中携带的服务信息对应的服务被服务中转设备中转的次数也可以表达为服务发现已被中转的次数，例如，若第一服务发现消息由生成第一服务发现消息的设备发送，则其中转的次数为0，若第一服务发现消息由第一个服务中转设备发送，则第一服务发现消息对应的服务发现经过中转的次数为1。第一服务中转指示信息可以直接指示该第一服务发现消息对应的服务发现经过中转，也可以为间接指示该第一服务发现消息对应的服务发现经过中转的信息，如该第一服务发现消息已中转的次数。
需要说明的是，第一服务中转指示信息用于指示服务发现已被中转的次数，也可以理解为，若服务发现已经过中转，并且第一服务中转指示信息所指示的服务发现已被中转的次数可能与实际的次数不完全相符,但通过第一服务中转指示信息,已经可以指示所述服务发现是否被中转过即是否为多跳的服务发现。
示例性的，第一服务中转指示信息为跳数(Hopcount)，其中跳数指发送该第一服务发现消息的NAN设备距离生成第一服务发现消息的NAN设备的实际跳数，该跳数大于零时第一服务发现消息至少经过一次中转。当第二NAN设备根据第一服务中转指示信息确定服务发现已被中转的次数小于最大跳数时，第二NAN设备根据第一服务发现消息生成用于服务发现的第二服务发现消息确定中转服务发现。
具体的，服务发现已被中转的次数，还可以为接收到用于服务发现的服务发现消息的NAN设备根据所接到的服务发现消息携带的信息生成另一服务发现消息的次数。具体的，当NAN网络内的NAN设备被设置为每次接收到用于服务发现的服务发现消息均根据该服务发现消息携带的信息生成另一服务发现消息，则用于该服务发现的服务发现消息在传输路径上所经过的NAN设备的数量，可以为服务发现中转的次数；当NAN网络内的NAN设备被设置为根据预设规则在特定位置的NAN设备中根据接收到服务发现消息携带的信息生成另一服务发现消息，则用于该服务发现的服务发现消息所经过的特定位置的NAN设备数量，可以为该服务发现已被中转的次数。示例性的，在生成服务发现消息的NAN设备所发送的服务发现消息传输路径上的前3个中转设备根据各自所接收的服务发现消息携带的信息生成另一服务发现消息。
需要说明的是，第一服务标识信息可以为进行服务发现订阅或发布的服务订阅或发布的服务名称，或者为将该服务订阅或发布的服务名称进行转换运算后的数值，只要针对该服务发现消息进行响应的NAN设备，需要根据第一服务标识信息将第一服务发现消息订阅或发布的服务与自身订阅或发布的服务进行匹配即可。当第一服务发现消息未经过中转且不需要第二NAN设备进行中转时，第二NAN设备可以根据第一服务标识信息将第一NAN设备通过第一服务发现消息进行服务发现订阅或发布的服务与自身服务需求进行匹配。
优选的，将服务订阅或发布的服务名称(Service Name)进行哈希运算，再取第一个48bit作为第一服务标识信息。
需要说明的是，第一服务标识信息可以被第一服务发现消息直接携带，也可以其他形式隐含携带在第一服务发现消息中，具体的，第一服务标识信息以布隆滤波器(Bloom filter)等形式隐含携带在第一服务发现消息中。
402、第二NAN设备作为为第一NAN设备发起的服务发现进行中转的服务中转设备，根据第一服务发现消息生成并发送用于服务发现的第二服务发现消息。
其中，第二服务发现消息包括第二服务标识信息和第二服务中转指示信息；
根据所述第一服务发现消息生成所述第二服务发现消息包括根据第一服务标识信息生成第二服务标识信息，根据第一服务中转指示信息生成第二服务中转指示信息。
其中第一服务标识信息与第二服务标识信息不相同，第二服务标识信息用于指示第二服务发现消息对应的服务即第二服务发现消息订阅或发布的服务的信息，第二服务中转指示信息用于指示所述服务发现已被中转的次数。
具体的，第二服务标识信息与第一服务标识信息不相同，指当不支持多跳服务发现的NAN设备接收到包括第二服务标识信息的服务发现消息时，该NAN设备根据第二服务标识信息获取的服务与根据第一服务标识信息获取的服务不相同。而当本发明实施例中的第三NAN设备接收到包括第二服务标识信息的服务发现消息时，第三NAN设备可以根据第二服务标识信息与第二服务中转指示信息获取的服务与根据第一服务标识信息与第一服务中转指示信息获取的服务相同，更进一步的，第三NAN设备可以根据第二服务标识信息与第二服务中转指示信息获取生成服务发现消息的NAN设备所能够提供或需求的服务。因此当接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备时，即使该NAN设备自身的服务需求具备与生成服务发现消息的NAN设备所能够提供或订阅的服务匹配的服务时，该NAN设备也无法根据第二服务标识信息将生成服务发现消息的NAN设备所能够提供或订阅的服务与该NAN设备所自身的服务需求进行匹配，从而使该NAN设备得出自身服务需求与生成服务发现消息的NAN设备所能够提供或订阅的服务不匹配的结论，使该NAN设备不进行响应。
需要说明的是，第二服务中转指示信息用于指示服务发现已被中转的次数，也可以理解为若服务发现已经过中转，并且第二服务中转指示信息所指示的服务发现已被中转的次数可能与实际的次数不完全相符,但通过第二服务中转指示信息可以确定其所指示的服务发现是否被中转过即 是否为多跳的服务发现。
根据第一服务中转指示信息生成第二服务中转指示信息，其中第二服务中转指示信息用于指示服务发布中转的次数，服务发布中转的次数可以为第一服务中转指示信息所指示的服务发布中转的次数加1，也可以为第一服务中转指示信息所指示的服务发布中转的次数加上预设值，只要能够说明第二服务发现消息对应的服务发布中转的次数比第一服务发现消息对应的服务发布中转的次数增加一次即可。
根据第一服务标识信息生成第二服务标识信息，可以为根据预设在第二NAN设备中的预设规则或预设参数与第一服务中转指示信息生成第二服务标识信息，只要不支持多跳服务发现且具备与第一服务发现消息对应服务匹配的服务的NAN设备，在接收到携带第二服务标识信息的服务发现消息时，该NAN设备根据第二服务标识信息将第二服务发现消息订阅或发布的服务与该NAN设备具备或需要的服务无法匹配成功，而支持多跳服务发现且具备与第一服务发现消息对应服务匹配的服务的NAN设备，在接收到携带第二服务标识信息的服务发现消息时，可以根据与第二NAN设备中预设规则或预设参数对应的规则或参数以及第二服务标识信息与第二服务中转指示信息，生成第一服务标识信息即可。
示例性的，第一NAN设备将第一服务标识信息与预设值进行加/减/乘/除等可逆运算，或者是进行倒置、填充、乱序、替换某些位的运算，从而获取第二服务标识信息。
需要说明的是，服务中转设备是将生成服务发现消息的NAN设备的服务信息(如服务标识信息等)通过中转的服务发现消息进行扩散的设备，可以为专门的设备例如Proxy(代理)设备、也可以为NAN网络中由某种规则而承担中转功能的NAN设备来实现，本发明并不做限制。
其中，第二NAN设备可以在其所在的NAN网络内广播发送第二服务发现消息，使处于所述第一NAN设备的信号覆盖范围内的第三NAN设备可以接收到该第二服务发现消息；也可以以单播的形式向第三NAN设备发送第二服务发现消息，只要第三NAN设备接收到所述第二服务发现消息即可。
第二服务标识信息与第二服务中转指示信息可以被第二服务发现消息直接携带，也可以其他形式隐含携带在第二服务发现消息中，具体的，第二服务标识信息以布隆滤波器(Bloom filter)等形式隐含携带在第二服务发现消息中。
403、第三NAN设备根据第二服务标识信息与第二服务中转指示信息确定第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求是否匹配。
其中第三NAN设备中可以预置有预置规则或预置参数，第三NAN设备可以根据该预置规则或预置参数以及第二服务标识信息与第二服务中转指示信息获取第三服务标识信息，其中第三服务标识信息用于指示第一NAN设备进行服务发现订阅或发布的服务，第三NAN设备通过对比第三服务标识信息指示的服务与第三NAN设备的服务需求对应的服务，确定第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求是否匹配；第三NAN设备也可以根据该预置规则或预置参数以及第二服务标识信息、第三NAN设备自身服务需求具备的服务生成第四服务标识信息，其中第四服务标识信息用于指示第三NAN设备的服务需求对应的服务，第三NAN设备通过对比第四服务标识信息与第二服务标识信息，确定第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求是否匹配。
需要说明的是，第三NAN设备中预置的预置规则或预置参数与第二NAN设备中预置的预置规则或预置参数相对应，当第二NAN设备根据预置规则或预置参数以及第一服务标识信息与第一服务中转指示信息获取第二服务标识信息与第二服务中转指示信息时，第三NAN设备可以根据对应的预置规则或预置参数以及第二服务标识信息与第二服务中转指示信息获取第一服务标识信息与第一服务中转指示信息。而当中转第一服务发现消息的NAN设备均预置有与第二NANA设备中相同的预置规则或预置参数时，第三NAN设备可以进一步根据该对应的预置规则或预置参数以及第一服务标识信息与第一服务中转指示信息获取第一NAN设备进行服务发现订阅或发布的服务。
优选的，在步骤403前，第三NAN设备还可以根据第二服务中转指示信息确定第二服务发现消息是否需经过中转。
第三NAN设备根据第二服务发现消息携带的第二服务中转指示信息确定该第二服务发现消息是否经过中转。具体的，当第二服务中转指示信息所指示的第二服务发现消息经过中转的次数大于零时，第三NAN设备可以直接确定该第二服务发现消息是否经过中转。
404、第三NAN设备向第二NAN设备发送服务匹配响应消息。
具体的，当匹配成功时，第三NAN设备可以向第二NAN设备发送针对第一NAN设备的第一服务响应消息，第二NAN设备可以根据第一服务响应消息向第一NAN设备发送第二服务响应消息，并在第一NAN设备与第二NAN设备间，以及第二NAN设备与第三NAN设备间分别建立NAN数据链接。
本发明实施例提供的服务发现方法，第二NAN设备接收第一NAN设备发送的包括第一服务标识信息以及第一服务中转指示信息的第一服务发现消息，第二NAN设备根据第一服务标识信息以及第一服务中转指示信息生成第二服务标识信息以及第二服务中转指示信息，并向第三NAN设备发送携带第二服务标识信息与第二服务中转指示信息的第二服务发现消息，其中第二服务标识信息与第一服务标识信息不相同，使第三NAN设备在接收到第二服务发现消息并且根据第二服务中转指示信息确定第二服务发现消息经过中转时，能够根据第二服务标识信息以及第二服务中转指示信息将第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备自身服务需求进行匹配，当匹配成功时根据第一NAN设备进行服务发现订阅或发布的服务进行响应。
其中当本发明实施例中的第三NAN设备接收到包括第二服务标识信息的服务发现消息时，第三NAN设备可以根据第二服务标识信息与第二服务中转指示信息获取的服务与根据第一服务标识信息与第一服务中转指示信息获取的服务相同，更进一步的，第二NAN设备可以根据第二服务标识信息与第二服务中转指示信息获取服务发布设备服务发布对应的服务，因此能够根据第二服务标识信息以及第二服务中转指示信息将第一 NAN设备进行服务发现订阅或发布的服务与第三NAN设备自身服务需求进行匹配。而当接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备时，即使该NAN设备自身的服务需求具备与服务发布设备所进行服务发布匹配的服务时，该NAN设备也无法根据第二服务标识信息将服务发布设备进行服务发布的服务与该NAN设备自身服务需求进行匹配，从而使该NAN设备得出自身服务需求与服务发布设备所进行服务发布的服务不匹配的结论，使该NAN设备不进行响应。因此本发明实施例提供的服务发现方法在经过中转的服务发现消息被支持多跳服务发现的NAN设备正确接收的前提下，使不支持多跳服务发现的NAN设备对经过中转的多跳服务发现消息不进行响应。
实施例五：
具体的，如附图8所示，本发明的实施例提供了一种服务发现方法，应用于上述实施例提供的通信系统中，该方法包括：
501、第二NAN设备接收第一NAN设备发送的第一服务发现消息，其中第一服务发现消息用于服务发现，第一服务发现消息包括第一服务标识信息，第一服务标识信息用于指示第一服务发现消息对应的服务。
其中，第一服务发现消息用于服务发现，指第一服务发现消息用于向位于同一NAN网络中的其他NAN设备告知第一NAN设备状态的改变，即告知第一NAN设备需要订阅或者发布的服务或向其他NAN设备做出的回应如后续等，进一步地，第一NAN设备还可以通过向其他NAN设备发送第一服务发现消息，以进一步确认建立交互服务数据的数据链路的信息。
具体的，第一NAN设备发送第一服务发现消息，第一NAN设备可以在其所在的NAN网络内广播发送第一服务发现消息，使处于所述第一NAN设备的信号覆盖范围内的第二NAN设备可以接收到该第一服务发现消息；也可以以单播的形式向第二NAN设备发送第一服务发现消息，只要第二NAN设备接收到所述第一服务发现消息即可。
具体的，接收到第一服务发现消息的NAN设备可以根据第一服务标识信息将第一服务发现消息发布或订阅的服务与接收到第一服务发现消息的NAN设备需求或能够提供的服务进行匹配。第一服务标识信息可以包 括第一NAN设备进行服务发现订阅或发布的服务的信息。接收到第一服务发现消息的NAN设备对在第一服务发现消息进行匹配时，需要对进行服务发现订阅或发布的服务的信息以及该NAN设备对服务的需求情况即服务的控制类型进行匹配，当匹配成功时，根据接收到的第一服务发现消息进行响应。其中进行服务发现订阅或发布的服务，可以为第一NAN设备订阅或发布的服务，可以包括服务标识或者服务名称；服务的控制类型可以为服务发布、服务订阅以及服务后续。
优选的，将服务订阅或发布的服务名称(Service Name)进行哈希运算，再取第一个48bit作为第一服务标识信息。
需要说明的是，第一服务标识信息可以被第一服务发现消息直接携带，也可以其他形式隐含携带在第一服务发现消息中，具体的，第一服务标识信息以布隆滤波器(Bloom filter)等形式隐含携带在第一服务发现消息中。
502、第二NAN设备根据第一服务发现消息生成并发送用于服务发现的第二服务发现消息，第二服务发现消息包括第二服务标识信息与服务多跳指示信息，第二服务标识信息与第一服务标识信息不相等。
其中，第二NAN设备作为为第一NAN设备发起的服务发现进行中转的服务中转设备。
服务多跳指示信息用于指示第二服务发现消息用于中转服务发现。中转服务发现，具体指发送第一服务发现消息的设备可以不是第一服务发现消息所进行服务发现对应的第一NAN设备，第一服务发现消息可以由一个服务中转设备发送，在这里第二NAN设备作为中转第一服务发现消息的服务中转设备，该服务中转设备可能是接收到第一NAN设备发送的用于服务发现的服务发现消息后，对所述服务发现消息的服务信息(如服务标识信息等)进行进一步地扩散，也可能是接收到其他服务中转设备发送的中转的服务发现消息后，对其中的服务信息进行进一步扩散。中转的服务发现消息中的服务信息可以与第一NAN设备发送的原始的服务发现消息中的服务信息不同或相同。当一个服务中转设备接收服务发现消息并发送另一个服务发现消息对所接收的服务发现消息用于服务发现的服务信息 进行扩散时，也称中转服务发现。
需要说明的是，服务中转设备是将第一NAN设备的服务信息(如服务标识信息等)通过中转的服务发现消息进行扩散的设备，可以为专门的设备例如Proxy(代理)设备、也可以为NAN网络中由某种规则而承担中转功能的NAN设备来实现，本发明并不做限制。示例性的，服务多跳指示信息包括跳数(Hopcount)，其中跳数指发送该第二服务发现消息的NAN设备距离第一NAN设备的实际跳数，即该第二服务发现消息经过中转的次数，该跳数大于零时第二服务发现消息至少经过一次中转。
具体的，第二服务标识信息与第一服务标识信息不相同，指当不支持多跳服务发现的NAN设备接收到包括第二服务标识信息的服务发现消息时，该NAN设备根据第二服务标识信息获取的服务与根据第一服务标识信息获取的服务不相同。而当本发明实施例中的第三NAN设备接收到包括第二服务标识信息的服务发现消息时，第三NAN设备可以根据第二服务标识信息获取的服务与根据第一服务标识信息获取的服务相同，更进一步的，第二NAN设备可以根据第二服务标识信息获取服务发布设备服务发布对应的服务。因此当接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备时，即使该NAN设备自身的服务需求具备与服务发布设备所进行服务发布匹配的服务时，该NAN设备也无法根据第二服务标识信息将服务发布设备所进行服务发布与该NAN设备所订阅或发布的服务进行匹配，从而使该NAN设备得出自身服务需求与服务发布设备所进行服务发布对应服务不匹配的结论，使该NAN设备不进行响应。
第二服务标识信息可以为根据预设在第二NAN设备中的预设规则或预设参数生成，或者根据预设在第二NAN设备中的预设规则或预设参数以及第一服务标识信息生成，只要不支持多跳服务发现且具备与第一服务发现消息对应服务匹配的服务的NAN设备，在接收到携带第二服务标识信息的服务发现消息时，该NAN设备根据第二服务标识信息将第二服务发现消息订阅或发布的服务与接收该NAN设备具备的服务无法匹配成功，而支持多跳服务发现且具备与第一服务发现消息对应服务匹配的服务的NAN设备，在接收到携带第二服务标识信息的服务发现消息时，可以根据 与第二NAN设备中预设规则或预设参数对应的规则或参数以及第二服务标识信息生成第一服务标识信息，并根据第一服务标识信息将第一NAN设备进行服务发现订阅或发布的服务与自身服务需求对应的服务进行匹配即可。
示例性的，第一NAN设备根据第一服务标识信息与预设值进行加/减/乘/除等可逆运算，或者是进行倒置、填充、乱序、替换某些位的运算，从而获取第二服务标识信息。
需要说明的是，服务中转设备是将第一NAN设备的服务信息(如服务标识信息等)通过中转的服务发现消息进行扩散的设备，可以为专门的设备例如Proxy(代理)设备、也可以为NAN网络中由某种规则而承担中转功能的NAN设备来实现，本发明并不做限制。
其中，第二NAN设备可以在其所在的NAN网络内广播发送第二服务发现消息，使处于所述第一NAN设备的信号覆盖范围内的第三NAN设备可以接收到该第二服务发现消息；也可以以单播的形式向第三NAN设备发送第二服务发现消息，只要第三NAN设备接收到所述第二服务发现消息即可。
第二服务标识信息与第二服务中转指示信息可以被第二服务发现消息直接携带，也可以其他形式隐含携带在第二服务发现消息中，具体的，第二服务标识信息以布隆滤波器(Bloom filter)等形式隐含携带在第二服务发现消息中。
503、第三NAN设备接收第二服务发现消息，第三NAN设备根据服务多跳指示信息确定第二服务发现消息是否用于中转服务发现。
第三NAN设备根据第二服务发现消息携带的服务多跳指示信息确定该第二服务发现消息是否用于中转服务发现。具体的，当服务多跳指示信息为直接指示第二服务发现消息用于中转服务发现，第三NAN设备可以直接确定该第二服务发现消息是否用于中转服务发现；当服务多跳指示信息为间接指示该第二服务发现消息是否用于中转服务发现，如该用于中转服务发现经过中转的次数，或该用于中转服务发现仍需中转的次数与用于中转服务发现允许中转的最大次数时，第三NAN设备可以对服务多跳指 示信息进行相应处理，并根据处理后的信息确定第二服务发现消息是否用于中转服务发现。
示例性的，服务多跳指示信息包括跳数，当跳数大于零时，携带服务多跳指示信息的第二服务发现消息用于中转服务发现。
第三NAN设备根据服务多跳指示信息确定第二服务发现消息经过中转时，执行如下步骤504。
504、第三NAN设备根据第二服务标识信息确定第一NAN设备订阅或发布的服务与第三NAN设备的服务需求是否匹配。
其中第三NAN设备中可以预置有预置参数，该预置参数与第二服务标识信息相等，第三NAN设备将预置在其自身中的预置参数与第二服务发现消息携带的第二服务标识信息进行对比，当匹配时第三NAN设备根据第一服务标识信息进行响应；第三NAN设备中也可以设置有第二服务标识信息与第一服务标识信息的对应关系，当第二服务发现消息携带第二服务标识信息时，第三NAN设备按照对应关系，根据第一服务标识信息进行响应，优选的，第二服务标识信息与第一服务标识信息的对应关系可以为第三NAN设备根据第二服务标识信息按照预设规则生成，也可以为其他设备生成并设置在第三NAN设备中。
具体的，第三NAN设备可以根据该第二服务标识信息按照预设规则可以获取第一服务标识信息，或根据该第二服务标识信息以及服务多跳指示信息获取第一服务标识信息。第三NAN设备可以根据第一服务标识信息将第一服务发现消息订阅或发布的服务与第三NAN设备需要或能够提供的服务进行匹配，当匹配成功时，第三NAN设备可以向第二NAN设备发送针对第一NAN设备的第一服务响应消息，第二NAN设备可以根据第一服务响应消息向第一NAN设备发送第二服务响应消息，并在第一NAN设备与第二NAN设备间，以及第二NAN设备与第三NAN设备间分别建立NAN数据链接。
需要说明的是，第三NAN设备中预设的规则与第二NAN设备中根据第一服务标识信息获取第二服务标识信息的预设规则相对应。示例性的，当第二NAN设备根据预设值按照预设规则根据第一服务标识信息获取第 二服务标识信息时，第三NAN设备根据相同的预设值按照对应的预设规则将第二服务标识信息逆转换，以获取第一服务标识信息。
优选的，第三NAN设备可以按照预设规则根据第二服务标识信息得到第一NAN设备订阅或发布的服务对应的第一服务标识信息，并判断第一服务标识信息与第三服务标识信息是否匹配，当第一服务标识信息与第三服务标识信息匹配时，第一NAN设备订阅或发布的服务与第三NAN设备的服务需求匹配。其中第三服务标识信息用于指示所述第三NAN设备的服务需求对应的服务，第三服务标识信息可以为预置在第三NAN设备中，也可以为第三NAN设备根据预设规则获取。第三NAN设备还可以根据第三服务标识信息生成第四服务标识信息，并判断第二服务标识信息与所述第四服务标识信息是否匹配，当第二服务标识信息与第四服务标识信息匹配时，第一NAN设备订阅或发布的服务与第三NAN设备的服务需求匹配。
505、当第三NAN设备确定第一NAN设备订阅或发布的服务与第三NAN设备的服务需求匹配，第三NAN设备向第二NAN设备发送服务匹配响应消息。
本发明实施例提供的服务发现方法，第二NAN设备接收第一NAN设备发送的携带第一服务标识信息的第一服务发现消息，并发送携带第二服务标识信息与服务多跳指示信息的第二服务发现消息，其中第一服务标识信息与第二服务表示信息不相同，使第三NAN设备在根据服务多跳指示信息确定第二服务发现消息经过中转时，根据第二服务标识信息将第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备自身需求具备的服务进行匹配，当匹配成功时进行响应。而当不支持多跳服务发现的NAN设备在接收到第二服务发现消息时，无法根据第二服务发现消息中的第二服务标识信息获取第一NAN设备进行服务发现订阅或发布的服务，因此无法将第一NAN设备进行服务发现订阅或发布的服务与自身的服务进行匹配，从而无法向第二NAN设备做出响应。因此本发明实施例提供的服务发现方法在经过中转的服务发现消息被支持多跳服务发现的NAN设备正确接收的前提下，使不支持多跳服务发现的NAN设备对经过中转 的多跳服务发现消息不进行响应。
实施例六：
具体的，如附图9所示，本发明的实施例提供了一种服务发现方法，应用于上述实施例提供的通信系统中，该方法包括：
601、第二NAN设备接收第一NAN设备发送的第一服务发现消息，其中第一服务发现消息包括第一服务ID、第一跳数、最大跳数、中转有效时间。
其中，第一NAN设备发送第一服务发现消息，第一NAN设备可以在其所在的NAN网络内广播发送第一服务发现消息，使处于所述第一NAN设备的信号覆盖范围内的第二NAN设备可以接收到该第一服务发现消息；也可以以单播的形式向第二NAN设备发送第一服务发现消息，只要第二NAN设备接收到所述第一服务发现消息即可。
第一服务ID用于指示第一NAN设备通过第一服务发现消息订阅或发布的服务，第一跳数为进行第一服务发现消息对应服务发现的第一NAN设备距离第一NAN设备的实际跳数，即该服务发现对应的服务发现消息所经过的中转设备的数量，最大跳数为服务发现允许被中转的最大次数，即该服务发现对应的服务发现消息所经过的中转设备的最大数量，中转有效时间为第一NAN设备循环中转第一服务发现消息的有效时间。第一NAN设备按照预设周期循环中转第一服务发现消息，也可以根据预设规则以及中转有效时间等获取周期时间，并按照周期时间循环中转第一服务发现消息。
具体的，第一服务ID为第一NAN设备通过第一服务发现消息进行服务发现订阅或发布的服务，即订阅或发布服务的服务信息，第一服务ID可以为该服务的服务名称，或者可以是将该服务的服务名称进行转换运算后的数值，示例性的，将第一NAN设备通过服务发现消息订阅或发布服务的服务名称(Service Name)进行SHA-256哈希运算，再取第一个48bit作为第一服务ID。第一服务ID可以被直接携带，也可以以布隆滤波器(Bloom filter)等形式隐含携带。
优选的，如表1所示，可以在第一服务发现消息中添加一个专门用于 指示多跳的字段信息，或者可以为跳数信息等间接表达多跳的信息。例如，在服务发现消息中强制携带的服务描述属性(Service Descriptor Attribute，SDA)中的Service Control的Data Info字段，添加Hopcount和Hopcount limit，其中Hopcount表示跳数，当第一服务发现消息未经过中转时，Hopcount＝0。
表1
Figure PCTCN2016105125-appb-000001
602、第二NAN设备开启计时器。
第二NAN设备在收到第一服务发现消息时，开启计时器进行计时。其中可以通过在第二NAN设备设置计时器模块进行计时，也可以有设置在第二NAN设备外的计时装置进行计时，只要第二NAN设备在收到第一服务发现消息时开始计时并或得计时器时间即可。
603、第二NAN设备判断是否第一跳数为0且第一跳数小于最大跳数。
第二NAN设备判断是否第一跳数为0且第一跳数小于最大跳数，其中第一跳数为0是指第一服务发现消息未经过中转，第一NAN设备为第一服务发现消息对应服务发现的第一NAN设备，可以为第一NAN设备生成并发送第一服务发现消息。第一跳数小于最大跳数，是指第二NAN设备需要对第一服务发现消息进行中转。
604、第二NAN设备根据第一服务ID获得第二服务ID，根据第一跳数生成第二跳数，其中第一服务ID不等于第二服务ID。
具体的，第二NAN设备可以通过预设规则根据第一服务ID获得第二服务ID，包括将第一服务ID与预设值进行加/减/乘/除等可逆运算，或者是进行倒置、填充、乱序、替换某些位的运算，从而获取第二服务ID，也可以为结合第一跳数和/或最大跳数根据预设规则对第一服务ID进行修改，只要使不支持多跳服务发现且具备与第一服务ID匹配服务的NAN设备，在接收到携带第二服务ID的服务发现消息时，该NAN设备无法根据第二服务ID所指示的服务与自身服务需求进行匹配即可。
需要说明的是，可以仅在跳数等于0且跳数小于最大跳数时对第一服务ID进行修改，也可以在跳数小于最大跳数时对第一服务ID进行修改。针对上述第一种情况，示例性的，当跳数等于0且跳数小于最大跳数时，第二NAN设备将第一服务ID加上预设值得到第二服务ID，当跳数大于0且跳数小于最大跳数时，第二NAN设备将不对第一服务ID进行修改。针对上述第二种情况，示例性的，当跳数小于最大跳数时，第二NAN设备将第一服务ID加上最大跳数减去跳数的差值，得到第二服务ID。
具体的，第二NAN设备按照预设规则根据第一跳数生成第二跳数，可以为将第一跳数与预设值进行加/减/乘/除等运算，或者是进行倒置、填充、乱序、替换某些位的运算，从而获取第二跳数，只要能够使第二NAN设备根据第二跳数获取第二服务发现消息经过中转的次数即可。
示例性的，第二NAN设备将第一跳数加1，得到第二跳数。
可选的，当所述第一跳数大于零时，所述第二NAN设备可以根据所述第一服务标识信息生成所述第二服务标识信息,其中所述第二跳数大于或等于所述第一跳数。其中，所述第二跳数大于所述第一跳数，可以是第二跳数等于第一跳数加1。其中，所述第二跳数等于所述第一跳数，这种情况下“所述第二服务中转指示信息用于指示所述服务发现已被中转的次数”可以理解为,虽然其指示的所述服务发现已被中转的次数可能与实际的次数不完全相符,但通过这个第二跳数,已经可以指示所述服务发现已被中转过,是一个多跳的服务发现。需要说明的是，有极小的概率经过第二NAN设备修改后获得的第二服务ID与不支持多跳服务发现的NAN设备的服务匹配的情况，因此在出现上述情况时，第二NAN设备通过判定该NAN设 备为不支持多跳服务发现的NAN设备，使第二NAN设备不处理该NAN设备发送的响应消息。
605、第二NAN设备发送第二服务发现消息，其中第二服务发现消息携带第二跳数、第二服务ID。
第二NAN设备发送第二服务发现消息，其中，第二NAN设备可以在其所在的NAN网络内广播发送第二服务发现消息，使处于所述第二NAN设备的信号覆盖范围内的第三NAN设备可以接收到该第二服务发现消息；也可以以单播的形式向第三NAN设备发送第二服务发现消息，只要第三NAN设备接收到所述第二服务发现消息即可。第二服务发现消息携带第二跳数以及第二服务ID。
606、第三NAN设备判断第二跳数是否大于0。
第三NAN设备判断是否第二跳数大于0，当第二跳数大于0，则表示第二服务发现消息至少经过一次中转。
607、第三NAN设备根据第二跳数以及第二服务ID获取第一服务ID。
其中第三NAN设备可以按照预设的规则根据第二服务ID获取所第一服务ID，也可以按照预设的规则根据第二跳数、第二服务ID获取第一服务ID，只要能够根据第二服务ID获取第一服务ID即可。第三NAN设备可以按照预设的规则根据第二消息类型获取第一消息类型。
需要说明的是，第三NAN设备中预设的规则与第二NAN设备中根据第一服务ID获取第二服务ID的预设规则相对应。
示例性的，第二NAN设备将第一ID加上预设值得到第二ID，因此第三NAN设备将第二ID减去相同的预设值得第一ID，优选的，预设值可以为1，即每次中转将第一ID加1。
608、第三NAN设备根据第一服务ID以及第一跳数判断服务发布设备进行服务发布的服务是否与第三NAN设备的服务匹配。
其中根据第一服务ID以及第一跳数判断服务发布设备进行服务发布的服务是否与第三NAN设备的服务匹配，其中首先根据第一服务ID以及第一跳数获取服务发布设备进行服务发布的服务。具体的，可以根据参照步骤607中根据第二服务ID以及第二跳数获取第一服务ID的步骤，根据 第二跳数获取第一跳数，根据第一服务ID以及第一跳数获取对应的服务ID，并依次参照上述步骤获取跳数为零时的服务ID，该服务ID所指示的服务即第一NAN设备进行服务发现订阅或发布的服务。
判断服务发布设备进行服务发布的服务是否与第三NAN设备的服务匹配，是指第三NAN设备所需求或能够提供服务的服务信息是否与服务发布设备进行服务发布的服务所匹配，具体可以为第三NAN设备所需求或能够提供的服务与服务发布设备进行服务发布的服务相对应，也可以为第三NAN设备将所需求或能够提供服务的服务信息按照预设规律进行相应的转换，再根据转换后的结果判断二者是否匹配，或第三NAN设备将服务发布设备进行服务发布的服务进行相应的转换再根据转换后的结果判断二者是否匹配。具体的，第三NAN设备在判断第三NAN设备是否支持服务发布设备进行服务发布的服务时，一般还需要将第二服务发现消息的类型与第三NAN设备具备服务的类型进行匹配，由于在本实施例中第二服务发现消息的类型与第一服务发现消息的类型默认相同，因此当第一服务发现消息订阅或发布的服务与第三NAN设备具备服务匹配时，第二服务发现消息的类型与第三NAN设备具备服务的类型也匹配。示例性的，当服务发布设备进行服务发布的服务为订阅服务，第三NAN设备可以提供服务发布设备进行服务发布的服务对应的服务，则第三NAN设备支持服务发布设备进行服务发布的服务；或当服务发布设备进行服务发布的服务为发布服务，第三NAN设备自身需要服务发布设备进行服务发布的服务，则第三NAN设备支持服务发布设备进行服务发布的服务。
当匹配成功时，执行如下步骤609。
609、第三NAN设备向第二NAN设备发送第一服务响应消息。
当匹配成功时，第三NAN设备向第二NAN设备发送针对第二NAN设备的服务响应消息。
具体的，第一服务响应消息携带用于第三NAN设备与第二NAN设备建立中转的NAN数据链路的信息，该信息可以包括时槽(time slot)信息和频率信息，该信息用于确定出公共的时频资源，并在该时频资源上进行NAN数据链路。
示例性的，当第二服务发现消息为SDF Subscribe服务订阅消息时，第三NAN设备向第二NAN设备发送SDF Publish服务发布消息，向第二NAN设备发送的SDF Publish服务发布消息中携带多跳服务匹配指示信息；当第二服务发现消息为SDF Publish服务发布消息时，第三NAN设备向第二NAN设备发送SDF Follow-up服务后续消息，该向第二NAN设备发送的SDF Follow-up服务后续消息中携带多跳服务匹配指示信息，其中多跳服务匹配指示信息用于指示服务匹配响应消息用于响应中转的服务发现消息即第二服务发现消息。
610、第二NAN设备向第一NAN设备发送第二服务响应消息。
第二NAN设备收到第一服务响应消息后，第二NAN设备向第一NAN设备发送第二服务响应消息，并在第二NAN设备与第三NAN设备间，及第二NAN设备与第一NAN设备间分别建立NAN数据链路。
具体的，第二服务响应消息携带用于第二NAN设备与第一NAN设备建立中转的NAN数据链路的信息，该信息可以包括时槽(time slot)信息和频率信息，该信息用于确定出公共的时频资源，并在该时频资源上进行NAN数据链路。
611、第二NAN设备判断是否计时器时间大于或等于中转有效时间。
第二NAN设备判断计时器时间，即计时器所计时间是否大于或等于中转有效时间，即第二NAN设备中转第一服务发现消息的时间是否大于第一服务发消息允许被中转的有效时间。
优选的，中转有效时间可以等于多个NAN机制约定的发现窗口(Discovery window，DW)时间之和。
当计时器时间大于或等于中转有效时间时，执行如下步骤512。
612、第二NAN设备取消发送第二服务发现消息。
其中，取消发送可以是中止正在进行的消息发送或取消准备开始的消息发送。
本发明实施例提供的服务发现方法，第二NAN设备接收第一NAN设备发送的第一服务发现消息，当第二NAN设备通过第一跳数与最大跳数确定第一服务发现消息需要进行中转时，将第一服务发现消息携带的第 一服务ID进行修改，以获得不等于第一服务ID的第二服务ID，并转发携带第二服务ID与第二跳数的第二服务发现消息，使第三NAN设备可以根据第二服务ID与第二跳数获得第一服务ID与第一跳数，并根据第一服务ID与第一跳数将第一NAN设备进行服务发布的服务与第三NAN设备自身服务需求进行匹配，当匹配成功时向第二NAN设备发送服务响应消息，从而使第二NAN设备向第一NAN设备转发响应消息。从而使第三NAN设备可以根据经过转发的第二服务发现消息将第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备自身具备的服务进行匹配，并在匹配成功时针对第一NAN设备进行服务发现订阅或发布的服务进行响应。而当接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备时，即使该NAN设备自身的服务需求具备与服务发布设备所进行服务发布匹配的服务时，该NAN设备也无法根据第二服务ID将服务发布设备进行服务发布的服务与该NAN设备自身服务需求进行匹配，从而使该NAN设备得出自身服务需求与服务发布设备所进行服务发布的服务不匹配的结论，使该NAN设备不进行响应。因此本发明实施例提供的服务发现方法在经过中转的服务发现消息被支持多跳服务发现的NAN设备正确接收的前提下，使不支持多跳服务发现的NAN设备对经过中转的多跳服务发现消息不进行响应。
实施例七：
具体的，如附图10所示，本发明的实施例提供了一种服务发现方法，应用于上述实施例提供的通信系统中，该方法包括：
701、第二NAN设备接收第一NAN设备发送的用于服务发现的第一服务发现消息，其中第一服务发现消息携带第一服务控制类型信息和第一服务标识信息。
其中，第一服务发现消息用于服务发现，指第一服务发现消息用于向与所述第一NAN设备位于同一NAN网络中的其他NAN设备告知自身设备状态的改变，即向其他NAN设备告知第一NAN设备自身需要订阅或者发布的服务或向其他NAN设备做出的回应如后续等，进一步地，第一NAN设备还可以通过向其他NAN设备发送第一服务发现消息，以进一步确认 建立交互服务的数据链路的信息。
其中，第一NAN设备发送第一服务发现消息，第一NAN设备可以在其所在的NAN网络内广播发送第一服务发现消息，使处于所述第一NAN设备的信号覆盖范围内的第二NAN设备可以接收到该第一服务发现消息；也可以以单播的形式向第二NAN设备发送第一服务发现消息，只要第二NAN设备接收到所述第一服务发现消息即可。
第一服务控制类型信息用于指示通过第一服务发现消息进行服务发现订阅或发布的服务控制类型，即第一服务发现消息携带的服务的服务控制类型。接收到第一服务发现消息的NAN设备对通过第一服务发现消息订阅或发布的服务进行匹配时，需要对进行服务发现订阅或发布的服务的信息以及该NAN设备对服务的需求情况即服务的控制类型进行匹配，当匹配成功时，根据接收到的第一服务发现消息进行响应。其中进行服务发现订阅或发布的服务可以为第一NAN设备订阅或发布的服务服务的服务控制类型，即第一服务发现消息携带的服务的服务控制类型。接收到第一服务发现消息的NAN设备对通过第一服务发现消息订阅或发布的服务进行匹配时，需要对进行服务发现订阅或发布的服务的信息以及该NAN设备对服务的需求情况即服务的控制类型进行匹配，当匹配成功时，根据接收到的第一服务发现消息进行响应。其中进行服务发现订阅或发布的服务可以为第一NAN设备订阅或发布的服务，其服务控制类型可以为服务发布、服务订阅以及服务后续。第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务。
具体的，接收到第一服务发现消息的NAN设备可以根据第一服务控制类型信息将第一服务发现消息订阅或发布的服务与接收到第一服务发现消息的NAN设备所订阅或发布的服务进行匹配。接收到第一服务发现消息的NAN设备所订阅或发布的服务指该NAN设备具备的服务，NAN设备具备的服务包括NAN设备需要或提供的服务。
需要说明的是，第一服务控制类型信息可以为第一服务发现消息进行服务发现服务的服务控制类型，只要针对该服务发现消息进行响应的NAN设备，需要根据第一服务控制类型信息将第一服务发现消息订阅或发布的 服务与自身订阅或发布的服务进行匹配即可。当第一服务发现消息未经过中转且不需要第二NAN设备进行中转时，第二NAN设备可以根据第一服务控制类型信息将第一NAN设备通过第一服务发现消息进行服务发现订阅或发布的服务与自身服务需求进行匹配。
需要说明的是，第一服务控制类型信息可以被第一服务发现消息直接携带，也可以其他形式隐含携带在第一服务发现消息中，具体的，第一服务控制类型信息以布隆滤波器(Bloom filter)等形式隐含携带在第一服务发现消息中。
702、第二NAN设备发送第二服务发现消息，第二服务发现消息包括第二服务控制类型信息与第一服务标识信息。
其中第二服务控制类型信息用于指示第二服务发现消息携带的服务的控制类型。第二服务控制类型信息不同于第一服务控制类型信息。第一服务标识信息用于指示第一NAN设备进行服务发现订阅或发布的服务。
具体的，第二服务控制类型信息不同于第一服务控制类型信息，指第二服务发现消息所携带的进行服务发现订阅或发布的服务控制类型不等于第一服务发现消息所携带的进行服务发现订阅或发布的服务控制类型。当接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备时，即使该NAN设备具备与第一服务控制类型信息匹配的服务，该NAN设备会根据第二服务控制类型信息以及第一服务标识信息将第二服务发现消息订阅或发布的服务与该NAN设备需要或能够提供的服务进行匹配，从而使该NAN设备得出自身需要或能够提供的服务与第二服务发现消息对应服务不匹配的结论，进而不会发送响应消息。
示例性的，当第二NAN设备接收到第一NAN设备生成并发送的第一服务发现消息，第一NAN设备通过发送第一服务发现消息进行服务发现，其中第一服务发现消息的服务控制类型可以根据第一服务发现消息的某一字段确定例如根据第一服务发现消息的Service Control字段确定，为了确保接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备时该NAN设备无法进行响应，可以使用Service Control字段中被定义为reserved(保留)的值来表示被中转的服务发现消息的服务控制 类型，例如将Service Control Type被定义为保留的值11重新定义为中转的服务发现消息，当第二NAN设备生成并发送第二服务发现消息时，第二服务发现消息中Service Control的值为11，同时可以在第二服务发现消息中的另一字段例如Data info字段指示真实的服务控制类型即第一服务发现消息的服务控制类型。若第三NAN设备在接收到第二服务发现消息后，可以通过第二服务发现消息的Data info字段确定自身能够提供或订阅的服务是否与第一NAN设备进行服务发现订阅或发布的服务对应，若满足则进行响应。若接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备，该设备会根据Service Control字段的值11确定第二服务发现消息进行服务发现订阅或发布的服务控制类型，由于在该设备看来当Service Control字段的值为11时，第二服务发现消息所携带的进行服务发现订阅或发布的服务控制类型为中转的服务发现消息，故该设备会进一步根据所述第二服务发现消息的Data info字段所指示的真实的服务控制类型即第一服务发现消息的服务控制类型，去确定自身能够提供或订阅的服务是否与第一NAN设备进行服务发现订阅或发布的服务对应，若满足则进行响应。若接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备，该设备会根据Service Control字段的值11确定第二服务发现消息进行服务发现订阅或发布的服务控制类型，由于在该设备看来当Service Control字段的值为11时，第二服务发现消息所携带的进行服务发现订阅或发布的服务控制类型为空，因此该设备即使具备与第一服务控制类型信息匹配的服务，该NAN设备也无法根据第二服务控制类型信息以及第一服务标识信息将第二服务发现消息订阅或发布的服务与该NAN设备需要或能够提供的服务进行匹配，因而不会进行响应。
第二服务控制类型信息可以为预设在第二NAN设备中，也可以为按照预设的规则或对应关系根据第一服务控制类型信息获取第二服务控制类型信息，或按照预设规则将第一服务控制类型信息转换为第二服务控制类型信息，只要不支持多跳服务发现且具备与第一服务发现消息发布或订阅的服务匹配服务的NAN设备，在接收到携带第二服务控制类型信息的服务发现消息时，该NAN设备根据第二服务控制类型信息将第二服务发现 消息订阅或发布的服务与接收该NAN设备需要或能够提供的服务无法匹配成功即可。
第一服务标识信息可以为由第一NAN设备发送，并具体可由第一服务发现消息携带，也可以为第二NAN设备根据预设在第二NAN设备中的预设规则获取，或由第二NAN设备从其他装置或设备处获取。
优选的，第二服务发现消息还可以包括第二服务中转指示信息，第二服务中转指示信息用于指示携带该第二服务中转指示信息的第二服务发现消息经过支持多跳服务发现的NAN设备中转，第二服务中转指示信息可以为直接指示该第二服务发现消息经过中转，也可以为间接指示该第二服务发现消息经过中转的信息，如该第二服务发现消息已中转的次数。示例性的，第二服务中转指示信息包括跳数(Hopcount)，其中跳数指发送该第二服务发现消息的NAN设备距离第一NAN设备的实际跳数，即该第二服务发现消息经过中转的次数，该跳数大于零时第二服务发现消息至少经过一次中转。
优选的，第二服务发现消息还可以携带有第一服务控制类型消息，该第一服务控制类型消息用于指示第一NAN设备进行服务发现订阅或发布的服务的控制类型，在本实施例中，第一服务控制类型消息用于指示第一NAN设备进行服务发现订阅或发布的服务的控制类型。
其中，第二NAN设备可以在其所在的NAN网络内广播发送第二服务发现消息，使处于第二NAN设备的信号覆盖范围内的第三NAN设备可以接收到该第二服务发现消息；也可以以单播的形式向第三NAN设备发送第二服务发现消息，只要第三NAN设备接收到所述第二服务发现消息即可。
需要说明的是，第二服务控制类型信息与第一服务标识信息可以被第二服务发现消息直接携带，也可以其他形式隐含携带在第二服务发现消息中，具体的，第二服务控制类型信息与第一服务标识信息以布隆滤波器(Bloom filter)等形式隐含携带在第二服务发现消息中。
703、第三NAN设备根据第二服务控制类型信息确定第二服务发现消息是否为中转的服务发现消息。
第三NAN设备根据第二服务发现消息携带的第二服务控制类型信息确定该第二服务发现消息是否经过中转。具体的，当第二服务控制类型信息所指示的服务控制类型为经过中转的服务类型时，第三NAN设备可以直接确定该第二服务发现消息是否经过中转；也可以为当第二服务控制类型信息所指示的服务控制类型不为订阅、发布或后续中的任何一个时，第三NAN设备可以确定该第二服务发现消息经过中转。
第三NAN设备确定第二服务发现消息为中转的服务发现消息时，执行如下步骤604。
704、第三NAN设备根据第一服务标识信息确定第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务是否匹配。
其中第三NAN设备中可以预置有预置参数，该预置参数与第一服务标识信息相等，第三NAN设备将预置在其自身中的预置参数与第二服务发现消息携带的第一服务标识信息进行对比，以判断第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务是否匹配。第三NAN设备也可以根据预设规则将第三NAN设备的服务需求对应的服务与第一服务标识信息指示的服务进行匹配，以判断第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务是否匹配。
优选的，当第二服务发现消息还携带有第一服务控制类型时，第三NAN设备还可以确定第一NAN设备进行服务发现订阅或发布的服务的控制类型与第三NAN设备的服务需求对应的服务的控制类型是否匹配。
705、第三NAN设备向第二NAN设备发送服务匹配响应消息。
第三NAN设备向第二NAN设备发送服务匹配响应消息，其中服务匹配响应消息携带可被第二NAN设备用于与第三NAN设备确认第一NAN设备所进行服务发现订阅或发布的服务的控制类型是否与第三NAN设备的服务需求对应服务的控制类型匹配的消息。
其中，第三NAN设备向第二NAN设备发送服务匹配响应消息，服务匹配响应消息可以包括，第三NAN设备向第二NAN设备发送携带有第 三NAN设备的服务需求对应的服务的控制类型的服务匹配响应消息，以便于第二NAN设备可以根据第三NAN设备的服务需求对应的服务的控制类型与第一NAN设备进行服务发现订阅或发布的服务的控制类型进行匹配；服务匹配响应消息还可以包括，第三NAN设备向第二NAN设备发送确认第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务匹配的确认消息，以便于第二NAN设备收到该确认消息后，向第三NAN设备发送第一NAN设备进行服务发现订阅或发布的服务的控制类型，使第三NAN设备可以根据第三NAN设备的服务需求对应的服务的控制类型与第一NAN设备进行服务发现订阅或发布的服务的控制类型进行匹配；服务匹配响应消息还可以包括，当第二服务发现消息还携带有第一服务控制类型时，当第三NAN设备确定第一NAN设备进行服务发现订阅或发布的服务的控制类型与第三NAN设备的服务需求对应的服务的控制类型匹配时，向第二NAN设备发送针对第一NAN设备进行服务发现订阅或发布的服务的响应消息。
示例性的，当第三NAN设备向第二NAN设备发送携带有第三NAN设备的服务需求对应的服务的控制类型的服务匹配响应消息时，该服务响应消息包括第三NAN设备根据第三NAN设备的服务需求对应的服务生成的第五服务标识信息，第二NAN设备在接受到该服务匹配响应消息后，可以根据第五服务标识信息将第三NAN设备的服务需求对应的服务与第一NAN设备进行服务发现订阅或发布的服务进行匹配。
示例性的，当第三NAN设备向第二NAN设备发送确认第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务匹配的确认消息时，第二NAN设备收到该确认消息后，向第三NAN设备发送第一NAN设备进行服务发现订阅或发布的服务的控制类型，第三NAN设备可以根据第三NAN设备的服务需求对应的服务的控制类型与第一NAN设备进行服务发现订阅或发布的服务的控制类型进行匹配。
示例性的，当第二服务发现消息还包括第一服务控制类型信息，第一服务控制类型信息用于指示第一NAN设备的进行服务发现订阅或发布的服务的控制类型时，第三NAN设备中将自身服务需求对应的服务与第二 服务发现消息携带的第一服务控制类型信息进行对比，当匹配时第三NAN设备根据第一服务控制类型信息进行响应，包括当第一服务控制类型信息为订阅，且第三NAN设备的服务需求能够提供第一服务标识信息指示的服务时，确定第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务匹配；当第一服务控制类型信息为发布，且第三NAN设备的服务需求需要使用第一服务标识信息指示的服务时，确定第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务匹配。
本发明实施例提供的服务发现方法，第二NAN设备接收第一NAN设备发送的第一服务发现消息，当第二NAN设备确定第一服务发现消息需要进行中转时，第二NAN设备在第二NAN设备中将携带的第一服务控制类型信息进行修改，以获得不等于第一服务控制类型信息的第二服务控制类型信息，并向第三NAN设备转发携带第二服务控制类型信息与第一服务标识信息的第二服务发现消息，使第三NAN设备在接收到携带第二服务控制类型信息的第二服务发现消息服务发现消息时，可以根据第二服务控制类型信息确定第二服务发现消息经过中转，并根据第一服务标识信息向第二NAN设备发送匹配响应消息，使第二NAN设备可以与第三NAN设备确认第一NAN设备所进行服务发现订阅或发布的服务的控制类型是否与第三NAN设备的服务需求对应服务的控制类型匹配，从而在匹配时使第三NAN设备可以针对第一NAN设备进行服务发现订阅或发布的服务做出相应的响应。而不支持多跳服务发现服务的NAN设备在接收到第二服务发现消息时，无法识别第二服务控制类型信息。因此本发明实施例提供的服务发现方法能够在经过中转的服务发现消息被支持多跳服务发现的NAN设备正确接收的前提下，使不支持多跳服务发现的NAN设备对经过中转的多跳服务发现消息不进行响应。
实施例八：
具体的，如附图11所示，本发明的实施例提供了一种服务发现方法，应用于上述实施例提供的通信系统中，该方法包括：
801、第二NAN设备接收第一NAN设备发送的用于服务发现的第一 服务发现消息，其中第一服务发现消息包括第一服务控制类型信息、第一跳数、最大跳数、中转有效时间。
其中，第一服务发现消息用于服务发现，指第一服务发现消息用于向位于同一NAN网络中的其他NAN设备告知自身设备状态的改变，即告知第一NAN设备自身需要订阅或者发布的服务或向其他NAN设备做出的回应如后续等，进一步地，第一NAN设备还可以通过向其他NAN设备发送第一服务发现消息，以进一步确认建立交互服务数据的数据链路的信息。
其中，第一NAN设备发送第一服务发现消息，第一NAN设备可以在其所在的NAN网络内广播发送第一服务发现消息，使处于所述第一NAN设备的信号覆盖范围内的第二NAN设备可以接收到该第一服务发现消息；也可以以单播的形式向第二NAN设备发送第一服务发现消息，只要第二NAN设备接收到所述第一服务发现消息即可。
第一服务控制类型信息用于指示通过第一服务发现消息进行服务发现订阅或发布的服务控制类型，即第一服务发现消息携带服务的服务控制类型。接收到第一服务发现消息的NAN设备对通过第一服务发现消息订阅或发布的服务进行匹配时，需要对进行服务发现订阅或发布的服务的信息以及该NAN设备对服务的需求情况即服务的控制类型进行匹配，当匹配成功时，根据接收到的第一服务发现消息进行响应。其中第一服务控制类型信息所指示的控制类型可以为服务发布Publish、服务订阅Subscribe或服务后续Follow-up。优选的，第一服务控制类型信息可以为00或01或10。示例性的，当第二NAN设备接收到第一NAN设备生成并发送的第一服务发现消息，第一NAN设备通过发送第一服务发现消息进行服务发现，其中第一服务发现消息的服务控制类型可以根据第一服务发现消息的某一字段例如根据第一服务发现消息的Service Control字段确定，为了确保接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备时该NAN设备无法进行响应，可以使用Service Control字段中被定义为reserved(保留)的值来表示被中转的服务发现消息的服务控制类型，例如将Service Control Type被定义为保留的值11重新定义为中转的服务发现消息，当第二NAN设备生成并发送第二服务发现消息时，第二服务发现 消息中Service Control的值为11，同时可以在第二服务发现消息中的另一字段例如Data info字段指示真实的服务控制类型即第一服务发现消息的服务控制类型。若第三NAN设备在接收到第二服务发现消息后，可以通过第二服务发现消息的Data info字段确定自身能够提供或订阅的服务是否与第一NAN设备进行服务发现订阅或发布的服务对应，若满足则进行响应。若接收到第二服务发现消息的NAN设备为不支持多跳服务发现的NAN设备，该设备会根据Service Control字段的值11确定第二服务发现消息进行服务发现订阅或发布的服务控制类型，由于在该设备看来当Service Control字段的值为11时，第二服务发现消息所携带的进行服务发现订阅或发布的服务控制类型为空，因此该设备即使具备与第一服务控制类型信息匹配的服务，该NAN设备也无法根据第二服务控制类型信息以及第一服务标识信息将第二服务发现消息订阅或发布的服务与该NAN设备需要或能够提供的服务进行匹配，从而避免进行响应，节约了设备电量，节省了空口消息。
第一跳数为进行第一服务发现消息对应服务发现的第一NAN设备距离第一NAN设备的实际跳数，即该服务发现对应的服务发现消息所经过的中转设备的数量，最大跳数为服务发现允许被中转的最大次数，即该服务发现对应的服务发现消息所经过的中转设备的最大数量，中转有效时间为第一NAN设备循环中转第一服务发现消息的有效时间。第一NAN设备按照预设周期循环中转第一服务发现消息，也可以根据预设规则以及中转有效时间等获取周期时间，并按照周期时间循环中转第一服务发现消息。
具体的，接收到第一服务发现消息的NAN设备可以根据第一服务控制类型信息将第一服务发现消息订阅或发布的服务与接收到第一服务发现消息的NAN设备所订阅或发布的服务进行匹配。接收到第一服务发现消息的NAN设备所订阅或发布的服务指该NAN设备具备的服务，NAN设备具备的服务包括NAN设备需要或提供的服务。
需要说明的是，第一服务控制类型信息可以为第一服务发现消息进行服务发现服务的服务控制类型，只要针对该服务发现消息进行响应的NAN设备，需要根据第一服务控制类型信息将第一服务发现消息订阅或发布的 服务与自身订阅或发布的服务进行匹配即可。当第一服务发现消息未经过中转且不需要第二NAN设备进行中转时，第二NAN设备可以根据第一服务控制类型信息将第一NAN设备通过第一服务发现消息进行服务发现订阅或发布的服务与自身需要或能够提供的服务进行匹配。
需要说明的是，第一服务控制类型信息可以被第一服务发现消息直接携带，也可以其他形式隐含携带在第一服务发现消息中，具体的，第一服务控制类型信息以布隆滤波器(Bloom filter)等形式隐含携带在第一服务发现消息中。
第一服务控制类型信息通常位于服务发现消息中强制携带的服务描述属性(Service Descriptor Attribute)中。
优选的，如上述实施例六中表1所示，可以在第一服务发现消息中添加一个专门用于指示多跳的字段信息，或者可以为跳数信息等间接表达多跳的信息。例如，在服务发现消息中强制携带的服务描述属性(Service Descriptor Attribute，SDA)中的Service Control的Data Info字段，添加Hopcount和Hopcount limit，其中Hopcount表示跳数，当第一服务发现消息未经过中转时，Hopcount＝0。
优选的，如表2所示，以服务发现消息中强制携带的服务描述属性(Service Descriptor Attribute，SDA)中的Service Control的Service Control Type字段，指示第一服务控制类型信息，当Service Control Type为00时，第一服务发现消息进行服务发现服务的服务控制类型为服务发布(Publish)；当Service Control Type为01时，第一服务发现消息进行服务发现服务的服务控制类型为服务订阅(Subscribe)；当Service Control Type为10时，第一服务发现消息进行服务发现服务的服务控制类型为服务后续(Follow up)。
表2
Figure PCTCN2016105125-appb-000002
Figure PCTCN2016105125-appb-000003
802、第二NAN设备开启计时器。
具体内容参照上述实施例中步骤602，在此不再详述。
803、第二NAN设备判断是否第一跳数为0且第一跳数小于最大跳数。
具体内容参照上述实施例中步骤603，在此不再详述。
804、第二NAN设备根据第一服务控制类型信息获得第二服务控制类型信息，根据第一跳数生成第二跳数。
其中第一服务控制类型信息不等于第二服务控制类型信息。
具体的，第二NAN设备可以通过预设规则修改第一服务控制类型信息以获得第二服务控制类型信息，优选的，第二服务控制类型信息可以为定义为经过转播的服务类型，也可以定义为无效的服务类型，或不支持多跳服务发现的NAN设备不进行响应的服务类型。不支持多跳服务发现的NAN设备在收到携带第二服务控制类型信息的服务发现消息时，无法与携带第二服务控制类型信息的服务发现消息匹配成功。示例性的，第一服务控制类型信息包括订阅Subscribe或发布Publish或后续Follow-up，第二服务控制类型信息包括其他类型，该其他类型不同于订阅、发布或后续；或第一服务控制类型信息包括00或01或10，第二服务控制类型信息包括11。
示例性的，当以服务发现消息中强制携带的服务描述属性(Service Descriptor Attribute，SDA)中的Service Control的Service Control Type字段，指示第一服务控制类型信息或第二服务控制类型信息时，第二NAN设备可以将第一服务控制类型信息修改为预设值，即第二服务控制类型信息，其中第二服务控制类型信息可以为定义为经过转播(relayed)的服务类型。示例性的，当Service Control Type为11时，第二服务发现消息进行服务发现服务的服务控制类型为转播(relayed)服务。
表3
Figure PCTCN2016105125-appb-000004
Figure PCTCN2016105125-appb-000005
同时，如表4所示，在服务发现消息中强制携带的服务描述属性(Service Descriptor Attribute，SDA)中的Service Control的Data Info字段，添加服务发现消息真实类型字段Service Control type，使其携带第一服务控制类型信息，即通过第一服务发现消息进行服务发现服务的服务控制类型。当Service Control Type’为00时，第一服务发现消息进行服务发现服务的服务控制类型为服务发布；当Service Control Type’为01时，第一服务发现消息进行服务发现服务的服务控制类型为服务订阅；
表4
Figure PCTCN2016105125-appb-000006
Figure PCTCN2016105125-appb-000007
第三NAN设备在接收第二服务发现消息后，可以通过在服务发现消息中强制携带的服务描述属性(Service Descriptor Attribute，SDA)中的Service Control的Data Info字段中的服务发现消息真实类型字段Service Control type’，判断第三NAN设备需要或能够提供的服务是否与第一服务发现消息进行服务发现服务的服务控制类型匹配。
具体的，第二NAN设备按照预设规则根据第一跳数生成第二跳数，可以为将第一跳数与预设值进行加/减/乘/除等运算，或者是进行倒置、填充、乱序、替换某些位的运算，从而获取第二跳数，只要能够使第三NAN设备根据第二跳数获取第二服务发现消息经过中转的次数即可。
示例性的，第二NAN设备将第一跳数加1，得到第二跳数。
805、第二NAN设备发送第二服务发现消息，其中第二服务发现消息携带第二服务控制类型信息以及第一服务标识信息。
第二NAN设备发送第二服务发现消息，其中，第二NAN设备可以在其所在的NAN网络内广播发送第二服务发现消息，使处于所述第一NAN设备的信号覆盖范围内的第三NAN设备可以接收到该第二服务发现消息；也可以以单播的形式向第三NAN设备发送第二服务发现消息，只要第二NAN设备接收到所述第二服务发现消息即可。
优选的，第二服务发现消息还携带第二跳数，第三NAN设备可以在收到第二服务发现消息时判断是否第二跳数大于0，当第二跳数大于0，则表示第二服务发现消息至少经过一次中转。
806、第三NAN设备根据第二服务控制类型信息确定第二服务发现消息是否为中转的服务发现消息。
第三NAN设备根据第二服务发现消息携带的第二服务控制类型信息确定该第二服务发现消息是否经过中转。具体的，当第二服务控制类型信息所指示的服务控制类型为经过中转的服务类型时，第三NAN设备可以直接确定该第二服务发现消息是否经过中转；也可以为当第二服务控制类型信息所指示的服务控制类型不为订阅、发布或后续中的任何一个时，第三NAN设备可以确定该第二服务发现消息经过中转。
807、第三NAN设备根据第一服务标识信息确定第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务是否匹配。
具体内容参照上述实施例中步骤604，在此不再详述
优选的，第三NAN设备还可以根据第三NAN设备的服务需求对应的服务生成第五服务标识信息，第五服务标识信息用于指示第三NAN设备的服务需求对应的服务，以便于第三NAN设备可以根据第五服务标识信息与第一服务标识信息进行匹配，当第一服务标识信息与第五服务标识信息匹配时，确定第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务匹配。
当匹配成功时，执行如下步骤808。
808、第三NAN设备向第二NAN设备发送第三服务发现消息。
具体的，第三服务发现消息可以包括第三服务控制类型信息，第三服务控制类型信息用于指示第三NAN设备的服务需求对应的服务的控制类型，以便于第二NAN设备根据第三服务控制类型信息与第一NAN设备进行服务发现订阅或发布的服务的控制类型进行匹配。
示例性的，第三NAN设备在确认第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求对应的服务匹配后，向第二NAN设备发送第三服务发现消息，第三服务发现消息携带第三服务控制类型信息，第三服务控制类型信息所指示的控制类型为服务订阅，当第一NAN设备进行服务发现订阅或发布的服务的控制类型为服务发布时，第二NAN设备确认第三NAN设备自身服务需求的服务与第一NAN设备进行服务发现订阅或发布的服务以及服务的控制类型均匹配。
809、第二NAN设备向第三NAN设备发送第四服务发现消息
当第二NAN设备确定第一NAN设备进行服务发现订阅或发布的服务的控制类型与第三服务控制类型匹配时，第二NAN设备向第三NAN设备发送第四服务发现消息，第四服务发现消息用于向第三NAN设备指示第三服务控制类型与第一NAN设备进行服务发现订阅或发布的服务的控制类型匹配。
具体的，其中第四服务发现消息可以携带用于第二NAN设备与第三NAN设备建立中转的NAN数据链路的信息，该信息可以包括时槽(time slot)信息和频率信息，该信息用于确定出公共的时频资源，并在该时频资源上进行NAN数据链路，以便于第三NAN设备收到第六服务响应消息后，在第二NAN设备与第三NAN设备间建立NAN数据链路。
优选的，第二NAN设备还可以向第一NAN设备发送用于第二NAN设备与第一NAN设备建立中转的NAN数据链路的信息，该信息可以包括时槽(time slot)信息和频率信息，该信息用于确定出公共的时频资源，并在该时频资源上进行NAN数据链路，以便于第一NAN设备收到该信息后，在第二NAN设备与第一NAN设备间建立NAN数据链路。
810、第二NAN设备判断是否计时器时间大于或等于中转有效时间。
具体内容参照上述实施例中步骤61，在此不再详述。
811、第二NAN设备停止向第三NAN设备发送第二服务发现消息。
本发明实施例提供的服务发现方法，第二NAN设备接收第一NAN设备发送的第一服务发现消息，当第二NAN设备中转通过第一跳数与最大跳数确定第一服务发现消息需要进行中转时，在向第三NAN设备发送第二服务发现消息，其中第二服务发现消息携带第二NAN设备中将携带的第一服务控制类型信息进行修改，以获得不等于第一服务控制类型信息的第二服务控制类型信息以及第一服务标识信息，使第三NAN设备可以根据第二服务控制类型信息获得第一服务控制类型信息确定第二服务发现消息经过中转，并根据第第一服务控制类型五服务标识信息将通过第一服务发现消息进行服务发现服务的服务控制类型第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备自身服务需求的服务进行匹配，当匹配成功时进行响应向第二NAN设备发送的第三服务发现消息，其中第三服务发现消息携带指示第三NAN设备自身服务需求的服务的控制类型的第三服务控制类型信息，从而使第二NAN设备可以根据第三服务控制类型信息与第一NAN设备进行服务发现订阅或发布的服务的控制类型进行匹配，以便于当匹配时第二NAN设备向第三NAN设备发送第一服务响应消息，从而在第一NAN设备、服务中转设备、服务响应设备间建立NAN 数据链路。而当不支持多跳服务发现的NAN设备在接收到第二服务发现消息时，无法根据第二服务控制类型信息将第一NAN设备进行服务发现订阅或发布的服务与自身需要或提供的服务进行匹配，从而无法向第一NAN设备做出响应。因此本发明实施例提供的服务发现方法能够在经过中转的服务发现消息被支持多跳服务发现的NAN设备正确接收的前提下，使不支持多跳服务发现的NAN设备对经过中转的多跳服务发现消息不进行响应。
实施例九：
具体的，如附图12所示，本发明实施例提供的服务发现方法，在步骤807后，还包括：
812、第三NAN设备向第二NAN设备发送第五服务发现消息。其中，第五服务发现消息可以仅包括服务控制类型索取信息，该服务控制类型索取信息用于向第二NAN设备索取第一NAN设备进行服务发现订阅或发布的服务的控制类型，以便于第三NAN设备能够从第二NAN设备处获取第一NAN设备进行服务发现订阅或发布的服务的控制类型，并将第一NAN设备进行服务发现订阅或发布的服务的控制类型与第三NAN设备自身服务需求对应服务的控制类型进行匹配。
813、第二NAN设备接收第五服务发现消息，并向第三NAN设备发送第六服务发现消息，其中第六服务发现消息包括第一服务控制类型信息。
第二NAN设备接收第三NAN设备发送的第五服务发现消息，第三NAN设备为中转第二服务发现消息的NAN设备，当第二NAN设备确定第一NAN设备进行服务发现订阅或发布的服务的控制类型与第三服务控制类型匹配时，第二NAN设备向第三NAN设备发送第六服务发现消息，第六服务发现消息用于向第三NAN设备指示第三服务控制类型与第一NAN设备进行服务发现订阅或发布的服务的控制类型匹配。
814、第三NAN设备接第六服务发现消息，并根据第一服务控制类型信息进行响应。
具体的，第三NAN设备接收第二NAN设备发送的第六服务发现消息，并根据第六服务发现消息中指示向第二NAN设备进行响应。
优选的，第六服务发现消息还可以包括第一服务控制类型信息，第一服务控制类型信息用于指示第一NAN设备进行服务发现订阅或发布的服务的控制类型。第三NAN设备根据第一服务控制类型信息与自身服务需求的服务进行匹配，当匹配时进行响应。
优选的，当第一服务控制类型信息所指示的服务类型为服务订阅，且第三NAN设备的服务需求能够提供第二服务标识信息所指示的服务，则确定第一NAN设备进行服务发现订阅或发布的服务的控制类型与第三NAN设备的服务需求的服务的控制类型匹配，即第一NAN设备订阅的服务与第三NAN设备的服务需求匹配。
当第一服务控制类型信息所指示的服务类型为服务发布，且第三NAN设备需要使用第二服务标识信息所指示的服务，则确定第一NAN设备进行服务发现订阅或发布的服务与第三NAN设备的服务需求匹配，即第一NAN设备发布的服务与第三NAN设备的服务需求匹配。
上述主要从各个网元之间交互的角度对本发明实施例提供的方案进行了介绍。可以理解的是，服务发现装置可以为一种电子设备，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本发明能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
本发明实施例可以根据上述方法实施例对服务发现装置等进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本发明实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在采用对应各个功能划分各个功能模块的情况下，附图13A示出了上述实施例中所涉及的服务发现装置901的一种可能的结构示意图，服务发现装置901包括：接收单元902，处理单元903以及发送单元904。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例四中的第二NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图7中的过程401；处理单元903用于控制发送单元904支持服务发现装置901执行附图7中的过程402。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例四中的第三NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图8中的过程403；处理单元903用于控制发送单元904支持服务发现装置901执行附图8中的过程404。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例五中的第二NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图8中的过程501；处理单元903用于控制发送单元904支持服务发现装置901执行附图8中的过程502。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例五中的第三NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图8中的过程503；处理单元903用于控制发送单元904支持服务发现装置901执行附图8中的过程504。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例六中的第二NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图9中的过程601、609；处理单元903用于控制发送单元904支持服务发现装置901执行附图9中的过程602-605、610-612。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例六中的第三NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图9中的过程605；处理单元903用于控制发送单元904支持服务发现装置901执行附图9中的过程606-609。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例七中的第二NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图10中的过程701、705；处理单元903用于控制发送单元904支持服务发现装置901执行附图10中的过程702。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例七中的第三NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图10中的过程702；处理单元903用于控制发送单元904支持服务发现装置901执行附图10中的过程703-705。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例八中的第二NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图11中的过程801、808以及附图12中的过程813；处理单元903用于控制发送单元904支持服务发现装置901执行附图11中的过程802-805、809-811以及附图12中的过程813。其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例八中的第三NAN设备所执行的方法。接收单元902用于支持服务发现装置901执行附图11中的过程805、811、以及附图12中的过程814；处理单元903用于控制发送单元904支持服务发现装置901执行附图11中的过程805、811、以及附图12中的过程814。其中，上述方法实施例涉及的各步 骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在采用集成的单元的情况下，附图13B示出了上述实施例中所涉及的服务发现装置的另一种可能的结构示意图。服务发现装置911包括：处理模块912和通信模块913。服务发现装置911还可以包括存储模块914，用于存储服务发现装置911的程序代码和数据。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例四中的第二NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图7中的过程401-402和/或用于本文所描述的技术的其它过程。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例四中的第三NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图7中的过程403-404和/或用于本文所描述的技术的其它过程。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例五中的第二NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图8中的过程501-502和/或用于本文所描述的技术的其它过程。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例五中的第三NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图8中的过程503-504和/或用于本文所描述的技术的其它过程。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例六中的第二NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图9中的过程601-605、609-612和/或用于本文所描述的技术的其它过程。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例六中的第三NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图9中的过程605-609和/或用于本文所描述的技术的其它过程。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例七中的第二NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图10中的过程701-702、705和/或用于本文所描述的技术的其它过程。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例七中的第三NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图10中的过程702-705和/或用于本文所描述的技术的其它过程。
当服务发现装置901为所述第二NAN设备时，其可以实现上述实施例八中的第二NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图11中的过程811-805、808-811以及附图12中的过程813和/或用于本文所描述的技术的其它过程。
当服务发现装置901为所述第三NAN设备时，其可以实现上述实施例八中的第三NAN设备所执行的方法。处理模块912用于对服务发现装置的动作进行控制管理，例如，处理模块912用于控制通信模块913支持服务发现装置执执行附图11中的过程805-808、811以及附图12中的过程812、814和/或用于本文所描述的技术的其它过程。
其中，处理模块912可以是处理器或控制器，例如可以是中央处理器(Central Processing Unit，CPU)，通用处理器，数字信号处理器(Digital Signal Processor，DSP)，专用集成电路(Application-Specific Integrated Circuit，ASIC)，现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。 其可以实现或执行结合本发明公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信模块913可以通过接口电路来实现，如可以是收发器、收发电路或通信接口等。存储模块914可以是存储器。
当处理模块912为处理器，通信模块913为接口电路，存储模块914为存储器时，本发明实施例所涉及的服务发现装置可以为图13C所示的服务发现装置。
参阅图13C所示，该服务发现装置921包括：处理器922、接口电路923、存储器924以及总线925。其中，处理器922、接口电路923、存储器924通过总线925相互连接；总线925可以是外设部件互连标准(Peripheral Component Interconnect，PCI)总线或扩展工业标准结构(Extended Industry Standard Architecture，EISA)总线等。所述总线可以分为地址总线、数据总线、控制总线等。为便于表示，图13C中仅用一条粗线表示，但并不表示仅有一根总线或一种类型的总线。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本发明的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、设备和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、设备和方法，可以通过其它的方式实现。例如，以上所描述的设备实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，设备或单 元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(英文简称：ROM，英文全称:Read-Only Memory)、随机存取存储器(英文简称：RAM，英文全称：Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本发明的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本发明的保护范围之内。因此，本发明的保护范围应所述以权利要求的保护范围为准。

Claims (38)

  1. 一种服务发现方法，其特征在于，包括：
    第二NAN设备接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息与第一服务中转指示信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务中转指示信息用于指示所述服务发现已被中转的次数；
    所述第二NAN设备作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包括第二服务标识信息和第二服务中转指示信息；
    其中，所述根据所述第一服务发现消息生成所述第二服务发现消息包括：
    所述第二NAN设备根据所述第一服务标识信息生成所述第二服务标识信息，并根据所述第一服务中转指示信息生成所述第二服务中转指示信息，其中，所述第一服务标识信息与所述第二服务标识信息不相同，所述第二服务标识信息用于指示所述第二服务发现消息所订阅或发布的服务，所述第二服务中转指示信息用于指示所述服务发现已被中转的次数。
  2. 根据权利要求1所述的服务发现方法，其特征在于，所述第一服务发现消息还包括最大跳数，所述最大跳数用于指示所述服务发现允许被中转的最大次数；
    所述根据所述第一服务发现消息生成用于所述服务发现的第二服务发现消息具体为:
    当所述第二NAN设备根据所述第一服务中转指示信息确定所述服务发现已被中转的次数小于所述最大跳数时，所述第二NAN设备根据所述第一服务发现消息生成用于所述服务发现的第二服务发现消息。
  3. 根据权利要求2所述的服务发现方法，其特征在于，所述第 二服务发现消息还包括所述最大跳数。
  4. 根据权利要求1-3任一所述的服务发现方法，其特征在于，所述第一服务中转指示信息为第一跳数，所述第二服务中转指示信息为第二跳数，所述服务发现方法还包括：
    当所述第一跳数等于零时，所述第二NAN设备根据第一服务标识信息生成第二服务标识信息，并根据所述第一跳数生成所述第二跳数,其中所述第二跳数大于零；
    当所述第一跳数大于零时，所述第二NAN设备根据所述第一服务标识信息生成所述第二服务标识信息,并根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于或等于所述第一跳数。
  5. 根据权利要求1-4任一项所述的服务发现方法，其特征在于，所述第一服务发现消息还包括中转有效时间；
    所述服务发现方法还包括：
    所述第二NAN设备收到所述第一服务发现消息时，开启计时器；
    当计时器时间大于或等于所述中转有效时间时，所述第二NAN设备取消发送所述第二服务发现消息。
  6. 一种服务发现方法，其特征在于，包括：
    第三NAN设备接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务标识信息与第二服务中转指示信息，所述第二服务标识信息用于指示所述第二服务发现消息对应的服务，所述第二服务中转指示信息用于指示所述服务发现已被中转的次数，所述第二服务发现消息为所述第二NAN设备接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务标识信息与第一服务中转指示信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务中转指示信息用于指示所述服务发现已被中转的次数；其中，所述第一服务标识信息与所述第二服务标识信息不相同；
    当所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息确定第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求匹配时，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息。
  7. 根据权利要求6所述的服务发现方法，其特征在于，所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求匹配前，还包括：
    所述第三NAN设备根据所述第二服务中转指示信息确定所述第二服务发现消息为中转的服务发现消息。
  8. 根据权利要求6所述的服务发现方法，其特征在于，所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求是否匹配，包括：
    所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息得到第三服务标识信息，所述第三服务标识信息用于指示所述第一NAN设备订阅或发布的服务；
    所述第三NAN设备确定所述第三服务标识信息与所述第三NAN设备的服务需求对应的服务是否匹配。
  9. 根据权利要求6所述的服务发现方法，其特征在于，所述第三NAN设备根据所述第二服务标识信息与所述第二服务中转指示信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求是否匹配，包括：
    所述第三NAN设备根据所述第二服务中转指示信息与所述第三NAN设备的服务需求对应的服务生成第四服务标识信息，所述第四服务标识信息用于指示所述第三NAN设备的服务需求对应的服务；
    所述第三NAN设备确定所述第四服务标识信息与所述第二服务标识信息是否匹配。
  10. 根据权利要求7所述的服务发现方法，其特征在于，所述第 三NAN设备根据所述第二服务中转指示信息确定所述第二服务发现消息为中转的服务发现消息，包括：
    所述第三NAN设备根据所述第二服务中转指示信息确定所述服务发现已被中转的次数大于零。
  11. 据权利要求7-10任一所述的服务发现方法，其特征在于，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息，包括：
    当所述第二服务发现消息为SDF Subscribe服务订阅消息时，所述第三NAN设备向所述第二NAN设备发送SDF Publish服务发布消息；
    当所述第二服务发现消息为SDF Publish服务发布消息时，所述第三NAN设备向所述第二NAN设备发送SDF Follow-up服务后续消息。
  12. 根据权利要求11所述的服务发现方法，其特征在于，所述向所述第二NAN设备发送的SDF Publish服务发布消息中携带多跳服务匹配指示信息，或，所述向所述第二NAN设备发送的SDF Follow-up服务后续消息中携带所述多跳服务匹配指示信息；其中，所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
  13. 一种服务发现方法，其特征在于，包括：
    第二NAN设备接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务信息；
    所述第二NAN设备作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送用于所述服务发现的第二服务发现消息；
    其中，所述根据所述第一服务发现消息生成所述第二服务发现消息包括：
    所述第二NAN设备根据所述第一服务标识信息生成所述第二服务标识信息，所述第二服务发现消息包括所述第二服务标识信息与服务多跳指示信息，所述第二服务标识信息用于指示所述第二服务发现消息订阅或发布的服务信息，所述第二服务标识信息与所述第一服务标识信息不相等，所述服务多跳指示信息用于指示所述第二服务发现消息用于中转所述服务发现。
  14. 根据权利要求13所述的服务发现方法，其特征在于，所述第一服务发现消息还包括中转有效时间；
    所述服务发现方法还包括：
    所述第二NAN设备收到所述第一服务发现消息时，开启计时器；
    当计时器时间大于或等于所述中转有效时间时，所述第二NAN设备取消发送所述第二服务发现消息。
  15. 一种服务发现方法，其特征在于，包括：
    第三NAN设备接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务标识信息与服务多跳指示信息，所述第二服务标识信息用于指示所述第二服务发现消息订阅或发布的服务信息；所述服务多跳指示信息用于指示所述第二服务发现消息用于中转所述服务发现；所述第二服务发现消息为所述第二NAN设备接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息订阅或发布的服务信息；所述第二服务标识信息与所述第一服务标识信息不相等；
    当所述第三NAN设备根据所述服务多跳指示信息确定所述第二服务发现用于中转所述服务发现时，所述第三NAN设备根据所述第二服务标识信息确定所述第一NAN设备订阅或发布的服务与所述第三NAN设备的服务需求是否匹配；
    当所述第三NAN设备确定所述第一NAN设备订阅或发布的服 务与所述第三NAN设备的服务需求匹配，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息。
  16. 根据权利要求15所述的服务发现方法，其特征在于，所述第三NAN设备根据所述第二服务标识信息确定第一NAN设备订阅或发布的服务与所述第三NAN设备的服务需求是否匹配，包括：
    根据所述第二服务标识信息得到所述第一NAN设备订阅或发布的服务对应的第一服务标识信息；
    判断所述第一服务标识信息与第三服务标识信息是否匹配，所述第三服务标识信息用于指示所述第三NAN设备的服务需求所订阅或发布的服务。
  17. 根据权利要求15所述的服务发现方法，其特征在于，所述第三NAN设备根据所述第二服务标识信息确定第一NAN设备订阅或发布的服务与所述第三NAN设备的服务需求是否匹配，包括：
    根据第三服务标识信息生成第四服务标识信息，所述第三服务标识信息用于指示所述第三NAN设备的服务需求对应的服务；
    判断所述第二服务标识信息与所述第四服务标识信息是否匹配。
  18. 据权利要求15-17任一所述的服务发现方法，其特征在于，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息，包括：
    当所述第二服务发现消息为SDF Subscribe服务订阅消息时，所述第三NAN设备向所述第二NAN设备发送SDF Publish服务发布消息；
    当所述第二服务发现消息为SDF Publish服务发布消息时，所述第三NAN设备向所述第二NAN设备发送SDF Follow-up服务后续消息。
  19. 根据权利要求18所述的服务发现方法，其特征在于，所述向所述第二NAN设备发送的SDF Publish服务发布消息中携带多跳服务匹配指示信息，所述向所述第二NAN设备发送的SDF Follow-up服务后续消息中携带所述多跳服务匹配指示信息，所述多跳服务匹配 指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
  20. 一种服务发现方法，其特征在于，包括：
    第二NAN设备接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务控制类型信息和第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务控制类型信息用于指示所述第一服务发现消息所订阅或发布的服务的控制类型；
    所述第二NAN设备作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务控制类型信息与所述第一服务标识信息，所述第二服务控制类型信息用于指示所述第二服务发现消息对应所订阅或发布的服务的控制类型，所述第二服务控制类型信息与所述第一服务控制类型信息不相同，所述第一服务标识信息用于指示所述第一NAN设备进行所述服务发现订阅或发布的服务。
  21. 根据权利要求20所述的服务发现方法，其特征在于，所述第一服务控制类型信息包括订阅Subscribe或发布Publish或后续Follow-up，所述第二服务控制类型信息包括其他类型，所述其他类型不同于订阅、发布或后续。
  22. 根据权利要求20所述的服务发现方法，其特征在于，所述第一服务控制类型信息包括00或01或10，所述第二服务控制类型信息包括11。
  23. 根据权利要求20所述的服务发现方法，其特征在于，所述第一服务发现消息还包括服务中转指示信息；
    所述第二NAN设备生成并发送第二服务发现消息，包括：
    当所述第二NAN设备根据所述服务中转指示信息确定中转所述服务发现时，所述第二NAN设备生成并发送所述第二服务发现消息。
  24. 根据权利要求23所述的服务发现方法，其特征在于，所述 服务中转指示信息包括第一跳数与最大跳数，所述第一跳数用于指示所述第一服务发现消息对应的服务发现已被中转的次数，所述最大跳数用于指示所述服务发现允许被中转的最大次数；
    所述第二NAN设备根据所述服务中转指示信息确定中转所述服务发现，包括：
    当所述第一跳数小于所述最大跳数时，所述第二NAN设备确定中转所述服务发现。
  25. 根据权利要求24所述的服务发现方法，其特征在于，所述第二服务发现消息还包括第二跳数，所述第二跳数用于指示所述第二服务发现消息对应的所述服务发现已被中转的次数。
  26. 根据权利要求25所述的服务发现方法，其特征在于，所述服务发现方法还包括：
    当所述第一跳数等于零时，所述第二NAN设备获取所述第二服务控制类型信息，并根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于零；
    当所述第一跳数大于零时，所述第二NAN设备根据所述第一跳数生成所述第二跳数，其中所述第二跳数大于或等于所述第一跳数。
  27. 根据权利要求20-26任一项所述的服务发现方法，其特征在于，所述第一服务发现消息还包括中转有效时间；
    所述服务发现方法还包括：
    所述第二NAN设备收到所述第一服务发现消息时，开启计时器；
    当计时器时间大于或等于所述中转有效时间时，所述第二NAN设备取消发送所述第二服务发现消息。
  28. 根据权利要求20-26任一项所述的服务发现方法，其特征在于，所述服务发现方法还包括：
    接收第三NAN设备发送的第三服务发现消息，所述第三NAN设备为响应所述第二服务发现消息的NAN设备，所述第三服务发现消息包括第三服务控制类型信息，所述第三服务控制类型信息用于指示所述第三NAN设备的服务需求对应的服务的控制类型；
    当所述第二NAN设备确定所述第一NAN设备进行所述服务发现所订阅或发布的服务的控制类型与第三服务控制类型匹配时，所述第二NAN设备向所述第三NAN设备发送第四服务发现消息，所述第四服务发现消息用于向所述第三NAN设备指示所述第三服务控制类型与所述第一NAN设备进行所述服务发现所订阅或发布的服务的控制类型匹配。
  29. 一种服务发现方法，其特征在于，包括：
    第三NAN设备接收第二NAN设备发送的用于服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务控制类型信息与第一服务标识信息，所述第二服务控制类型信息用于指示所述第二服务发现消息所订阅或发布的服务的控制类型，所述第一服务标识信息用于指示第一NAN设备进行所述服务发现所订阅或发布的服务；所述第二服务发现消息为所述第二NAN设备接收到第一NAN设备发送的用于所述服务发现的第一服务发现消息后，作为为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备，根据所述第一服务发现消息生成并发送；所述第一服务发现消息包括第一服务控制类型信息和所述第一服务标识信息，所述第一服务控制类型信息用于指示所述第一服务发现消息所订阅或发布的服务的控制类型；所述第二服务控制类型信息与所述第一服务控制类型信息不相同；
    当所述第三NAN设备根据所述第二服务控制类型信息确定所述第二服务发现消息为中转的服务发现消息时，所述第三NAN设备根据所述第一服务标识信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务是否匹配；
    当所述第三NAN设备确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务匹配时，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息。
  30. 根据权利要求29所述的服务发现方法，其特征在于，所述 第三NAN设备根据所述第二服务控制类型信息确定所述第二服务发现消息为中转的服务发现消息，包括，
    当所述第三NAN设备确定所述第二服务控制类型不为订阅、发布或后续中的任何一个时，所述第三NAN设备确定所述第二服务发现消息为中转的服务发现消息。
  31. 根据权利要求30所述的服务发现方法，其特征在于，所述第二服务发现消息还包括所述第一服务控制类型信息；
    所述第三NAN设备根据所述第一服务标识信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务是否匹配，包括：
    当所述第一服务控制类型信息为订阅，且所述第三NAN设备的服务需求能够提供所述第一服务标识信息指示的服务时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务匹配；
    当所述第一服务控制类型信息为发布，且所述第三NAN设备的服务需求需要使用所述第一服务标识信息指示的服务时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务匹配。
  32. 根据权利要求30所述的服务发现方法，其特征在于，所述第三NAN设备根据所述第一服务标识信息确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务是否匹配，包括：
    所述第三NAN设备根据所述第三NAN设备的服务需求对应的服务生成第五服务标识信息，所述第五服务标识信息用于指示所述第三NAN设备的服务需求对应的服务；
    当所述第一服务标识信息与所述第五服务标识信息匹配时，确定所述第一NAN设备进行所述服务发现所订阅或发布的服务与所述第三NAN设备的服务需求对应的服务匹配。
  33. 根据权利要求29、30、32中任一所述的服务发现方法，其 特征在于，所述第三NAN设备向所述第二NAN设备发送服务匹配响应消息，包括：
    所述第三NAN设备向所述第二NAN设备发送第三服务发现消息，所述第三服务发现消息包括第三服务控制类型信息，所述第三服务控制类型信息用于指示所述第三NAN设备的服务需求对应的服务的控制类型。
  34. 根据权利要求29、30、32中任一所述的服务发现方法，其特征在于，所述服务发现方法还包括：
    所述第三NAN设备接收所述第二NAN设备发送的第五服务发现消息，所述第五服务发现消息包括所述第一服务控制类型信息；
    当所述第一服务控制类型信息为订阅，且所述第三NAN设备的服务需求能够提供所述第二服务标识信息所指示的服务，则确定所述第一NAN设备订阅的服务与所述第三NAN设备的服务需求匹配；
    当所述第一服务控制类型信息为发布，且所述第三NAN设备需要使用所述第二服务标识信息所指示的服务，则确定所述第一NAN设备发布的服务与所述第三NAN设备的服务需求匹配。
  35. 根据权利要求29-32中任一所述的服务发现方法，其特征在于，所述服务匹配响应消息携带多跳服务匹配指示信息，所述多跳服务匹配指示信息用于指示所述服务匹配响应消息用于响应中转的服务发现消息。
  36. 一种服务发现装置，所述服务发现装置为第二NAN设备，其特征在于，包括：处理器、接口电路、存储器和总线，所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；所述处理器，用于通过所述接口电路接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息与第一服务中转指示信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务中转指示信息用于指示所述服务发现已被中转的次数；
    所述处理器还用于当所述服务发现装置为所述第一NAN设备发 起的所述服务发现进行中转的服务中转设备时，根据所述第一服务发现消息生成并通过所述接口电路发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包括第二服务标识信息和第二服务中转指示信息；
    其中，所述根据所述第一服务发现消息生成所述第二服务发现消息包括：
    根据所述第一服务标识信息生成所述第二服务标识信息，并根据所述第一服务中转指示信息生成所述第二服务中转指示信息，其中，所述第一服务标识信息与所述第二服务标识信息不相同，所述第二服务标识信息用于指示所述第二服务发现消息所订阅或发布的服务，所述第二服务中转指示信息用于指示所述服务发现已被中转的次数。
  37. 一种服务发现装置，所述服务发现装置为第二NAN设备，其特征在于，包括：处理器、接口电路、存储器和总线，所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
    所述处理器，用于通过所述接口电路接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务信息；
    所述处理器还用于当所述服务发现装置为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备时，根据所述第一服务发现消息生成并通过所述接口电路发送用于所述服务发现的第二服务发现消息；
    其中，所述根据所述第一服务发现消息生成所述第二服务发现消息包括：
    根据所述第一服务标识信息生成所述第二服务标识信息，所述第二服务发现消息包括所述第二服务标识信息与服务多跳指示信息，所述第二服务标识信息用于指示所述第二服务发现消息订阅或发布的服务信息，所述第二服务标识信息与所述第一服务标识信息不相等，所述服务多跳指示信息用于指示所述第二服务发现消息用于中转所 述服务发现。
  38. 一种服务发现装置，所述服务发现装置为第二NAN设备，其特征在于，包括：处理器、接口电路、存储器和总线，所述处理器、接口电路、存储器通过所述总线连接并完成相互间的通信；
    所述处理器，用于通过所述接口电路接收第一NAN设备发送的用于服务发现的第一服务发现消息，所述第一服务发现消息包括第一服务控制类型信息和第一服务标识信息，所述第一服务标识信息用于指示所述第一服务发现消息所订阅或发布的服务，所述第一服务控制类型信息用于指示所述第一服务发现消息所订阅或发布的服务的控制类型；
    所述处理器还用于当所述服务发现装置为所述第一NAN设备发起的所述服务发现进行中转的服务中转设备时，根据所述第一服务发现消息生成并通过所述接口电路发送用于所述服务发现的第二服务发现消息，所述第二服务发现消息包含第二服务控制类型信息与所述第一服务标识信息，所述第二服务控制类型信息用于指示所述第二服务发现消息对应所订阅或发布的服务的控制类型，所述第二服务控制类型信息与所述第一服务控制类型信息不相同，所述第一服务标识信息用于指示第一NAN设备进行所述服务发现订阅或发布的服务。
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US20230060222A1 (en) * 2021-08-24 2023-03-02 Mediatek Inc. Apparatuses and methods for extending service range of neighbor awareness networking (nan) communication

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060171403A1 (en) * 2005-02-01 2006-08-03 Samsung Electronics Co., Ltd. Gateway for interconnecting ad-hoc network and infrastructure network, and methods for discovering and registering service provider using gateway
CN102461314A (zh) * 2009-04-22 2012-05-16 英特尔公司 用于无线通信网络中的对等装置的发现信道和发现信标
CN104144465A (zh) * 2013-05-08 2014-11-12 华为终端有限公司 一种服务发现方法及装置
CN105100137A (zh) * 2014-04-26 2015-11-25 华为终端有限公司 一种服务发现的方法及电子设备

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100755706B1 (ko) * 2006-01-17 2007-09-05 삼성전자주식회사 애드 혹 네트워크를 위한 분산 서비스 컴포지션 모델을제공하는 방법 및 장치
US9800389B2 (en) * 2013-03-08 2017-10-24 Qualcomm Incorporated Systems and methods for discovering and synchronizing within a neighbor aware network
US9426020B2 (en) * 2013-03-15 2016-08-23 Cisco Technology, Inc. Dynamically enabling selective routing capability
US10057342B2 (en) 2014-09-05 2018-08-21 Qualcomm Incorporated Infrastructure access via neighbor awareness networking data path
US20160223333A1 (en) * 2015-01-30 2016-08-04 Qualcomm Incorporated Route determination using neighbor awareness network devices
US20160323925A1 (en) * 2015-04-30 2016-11-03 Nokia Technologies Oy Method, apparatus, and computer program product for inter-ap communication in neighbor awareness networking environment
US11095726B2 (en) * 2015-08-20 2021-08-17 Apple Inc. Neighbor awareness networking multi-hop
US10111160B2 (en) * 2016-03-24 2018-10-23 Qualcomm Incorporated NAN data link multi-hop topology

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060171403A1 (en) * 2005-02-01 2006-08-03 Samsung Electronics Co., Ltd. Gateway for interconnecting ad-hoc network and infrastructure network, and methods for discovering and registering service provider using gateway
CN102461314A (zh) * 2009-04-22 2012-05-16 英特尔公司 用于无线通信网络中的对等装置的发现信道和发现信标
CN104144465A (zh) * 2013-05-08 2014-11-12 华为终端有限公司 一种服务发现方法及装置
CN105100137A (zh) * 2014-04-26 2015-11-25 华为终端有限公司 一种服务发现的方法及电子设备

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