WO2017075790A1 - 一种随机接入设备、方法及系统 - Google Patents
一种随机接入设备、方法及系统 Download PDFInfo
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- WO2017075790A1 WO2017075790A1 PCT/CN2015/093925 CN2015093925W WO2017075790A1 WO 2017075790 A1 WO2017075790 A1 WO 2017075790A1 CN 2015093925 W CN2015093925 W CN 2015093925W WO 2017075790 A1 WO2017075790 A1 WO 2017075790A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0833—Random access procedures, e.g. with 4-step access
- H04W74/0838—Random access procedures, e.g. with 4-step access using contention-free random access [CFRA]
Definitions
- the present application relates to wireless communication technologies, and in particular, to a random access device, method, and system.
- a user equipment In a Long Term Evolution (LTE) system, a user equipment (UE) establishes a connection with a cell through a random access procedure and obtains uplink synchronization. Only when uplink synchronization is obtained, the UE can perform uplink transmission.
- LTE Long Term Evolution
- M2M Machine-to-Machine
- the M2M system also has a random access reject message.
- the evolved Node B eNB
- the evolved Node B notifies the UE of the access through a random access response (Random Access Response) message, or
- a Random Access Reject message is sent to reject the UE access, and the UE is informed to wait for a period of time to re-initiate the random access procedure. Both are sent on the Physical Downlink Control CHannnel (PDCCH).
- PDCH Physical Downlink Control CHannnel
- a monitoring network includes tens of thousands of monitoring nodes.
- the number of nodes that may be randomly accessed is large, and the random access response or reject message is sent on the PDCCH, and the PDCCH resources are simultaneously It is also used to send scheduling messages or paging messages, which can result in limited PDCCH resources.
- UEs may detect an emergency, such as a fire.
- a large number of UEs simultaneously initiate a random access procedure in a short time, and an evolved Node B (eNB) according to the network load.
- eNB evolved Node B
- the situation is to send a random access response or a reject message to these UEs on the PDCCH.
- the PDCCH is limited.
- a random access device, method and system are provided to solve the problem of limited control channel in a random access procedure.
- the application provides a network device, including:
- a processing module configured to determine a same processing result of a random access procedure initiated by N terminal devices in the M terminal device sets, where M and N are positive integers;
- a sending module configured to send the same random access control message to the N terminal devices that initiate the random access process, where the random access control message is used to indicate the same processing result that is determined by the processing module, the message
- the terminal set identifier information is used to identify the N terminal devices.
- the application provides a network device, including:
- a processor configured to determine a same processing result of a random access procedure initiated by N terminal devices in the M terminal device sets, where M and N are positive integers;
- a transmitter configured to send the same random access control message to the N terminal devices that initiate the random access procedure, where the random access control message is used to indicate the same processing result determined by the processor, the message
- the terminal set identifier information is used to identify the N terminal devices.
- the application provides a terminal device, including:
- a receiving module configured to receive a random access control message that is sent by the network device in response to the random access procedure initiated by the terminal device;
- a processing module configured to acquire terminal set identifier information in the random access control message received by the receiving module, where the terminal set identifier information is used to identify N terminal devices in the M terminal device sets, M and N And determining a processing result of the random access procedure initiated by the network device for the terminal device according to the random access control message, when determining the identifier of the terminal set identifier information, including the identifier of the terminal set identifier information.
- the application provides a terminal device, including:
- a receiver configured to receive a random access control message sent by the network device in response to the random access procedure initiated by the terminal device
- a processor configured to acquire terminal set identifier information in the random access control message received by the receiver, where the terminal set identifier information is used to identify N terminal devices in the M terminal device sets, M and N And determining a processing result of the random access procedure initiated by the network device for the terminal device according to the random access control message, when determining the identifier of the terminal set identifier information, including the identifier of the terminal set identifier information.
- the application provides a random access method, including:
- the network device determines the same processing result of the random access procedure initiated by the N terminal devices in the M terminal device sets, where M and N are positive integers;
- the network device sends the same random access control message to the N terminal devices that initiate the random access process, where the random access control message is used to indicate the same processing result, where the message includes the terminal set identifier information.
- the terminal set identifier information is used to identify the N terminal devices.
- the application provides a random access method, including:
- the terminal device acquires terminal set identifier information in the random access control message, where the terminal set identifier information is used to identify N terminal devices in the M terminal device sets, where M and N are positive integers;
- the application provides a wireless communication system, including:
- a network device configured to determine a same processing result of a random access procedure initiated by N terminal devices in the M terminal device sets, where M and N are positive integers; and to the N terminals that initiate a random access procedure
- the device sends the same random access control message, where the random access control message is used. Instructing the same processing result, the message includes terminal set identifier information, and the terminal set identifier information is used to identify the N terminal devices;
- a terminal device configured to receive a random access control message sent by the network device in response to the random access procedure initiated by the terminal device, acquire terminal set identification information in the random access control message, and determine the terminal
- the set identifier information includes the identifier of the terminal
- the processing result of the random access procedure initiated by the network device for the terminal device is determined according to the random access control message.
- the network device sends the same random access control message to the random access procedure initiated by the N terminal devices in the M terminal device set, and the same random access control message is used to indicate that the network device is for the N
- the message includes terminal set identifier information, which is used to identify the N terminal devices; after receiving the random access control message, the terminal device acquires the terminal set identifier information in the message, and
- the N terminal devices identified by the terminal set identifier information include the self, the processing result of the random access procedure initiated by the network device to the terminal device is determined according to the received random access control message, where M and N are positive Integer
- the network device uses the same random access reject message to indicate the same processing result of the random access procedure to the N terminal devices in the M terminal device sets, which can save the control channel resources occupied by the random access denial message.
- the random access control message is in a downlink control channel, and the same terminal device set to which the N terminal devices belong Corresponding to the same resource location sent.
- the terminal devices in the set share the same downlink control channel resource location, the resource occupation of the downlink control channel can be saved.
- the channel resource location information is broadcasted before the same random access control message is sent to the N terminal devices for transmission.
- the channel resource location information is used to indicate the same resource location.
- the terminal device can know the resource location occupied by the random access control message in advance in order to receive the random access control message.
- the random access control message is sent on the same resource location of the downlink control channel corresponding to the M terminal device sets. of.
- the terminal devices in the M terminal device sets share the same resource location of the downlink control channel, the resource occupation of the downlink control channel is further saved.
- the channel resource location information is broadcasted before the same random access control message is sent to the N terminal devices,
- the channel resource location information is used to indicate the same resource location corresponding to the M terminal device sets in the downlink control channel.
- the terminal device can know the resource location occupied by the random access control message in advance in order to receive the random access control message.
- all terminal devices in each terminal device set have at least one of the following features:
- Device IDs belong to the same set of device IDs
- the terminal set identifier information includes one or more of the following information:
- Type information where the type information is used to indicate the same terminal device type to which the N terminal devices belong;
- the area information is used to indicate that the N terminal devices are in the same random access resource area where the random access resources used in the initiated random access procedure are located.
- the N terminal devices may be identified according to the terminal device type, and the N terminal devices are instructed to receive the random access control message, and the result of the random access process is determined, only when the type of the terminal device is Terminal device only when the type indicated by the type information It can be confirmed that the received random access control message includes the processing result of the random access procedure initiated by itself.
- the N terminal devices may be identified according to the random access resources used by the terminal device to initiate the random access procedure, and the N terminal devices are instructed to receive the random access control message and determine the random access.
- the terminal device can confirm that the received random access control message includes a random originating to itself. The processing result of the access process.
- the N terminal devices may be represented according to the type of the random access resource used by the terminal device to initiate the random access process and the type of the terminal device, and the N terminal devices are instructed to receive the random access. Controlling the message and determining the result of the random access procedure, only the random access resource used by the terminal device to initiate the random access procedure is located in the random access resource region indicated by the area information, and the type of the terminal device is indicated by the type information. When the type is used, the terminal device can confirm that the received random access control message includes the processing result of the random access procedure initiated by itself.
- the area information includes a frame number and intra-frame location information of the random access resource
- the frame number of the random access resource is used to indicate a frame number of a frame where the random access resource located in the same random access resource region is located;
- the intra-frame location information is used to indicate a location of the same random access resource region in a frame indicated by a frame number of the random access resource;
- the intra-frame location information includes: frequency domain start location information, frequency domain termination location information, time domain start location information, and time domain termination location information; or
- the intra-frame location information includes: frequency domain start location information, frequency domain bandwidth, time domain start location information, and time domain duration; or
- the intra-frame location information includes: time domain location information, where the same random access resource region occupies the entire bandwidth occupied by the random access channel in the frequency domain, and the time domain location is occupied in the time domain. One or more time units indicated by the information; or
- the intra-frame location information includes: frequency domain location information, where the same random access resource region occupies one or more frequency domain units indicated by the frequency domain location information in a frequency domain, and randomly takes up time domain The entire time period occupied by the access channel; or
- the intra-frame location information includes: one or more random access channel resource indexes, where each random access channel resource index is used to indicate a resource of a random access channel used by a terminal device to send a random access request message.
- This alternative implementation gives many possible implementations of the zone information.
- the intra-frame location information includes one or more random access channel resource indexes, and each random access channel resource index When indicating, by a terminal device, the resource of the random access channel used by the random access request message, broadcasting the random access channel resource index and the random access channel before the network device sends the random access control message Correspondence of resources; or
- the correspondence between the random access channel resource index and the random access channel resource is pre-defined by the protocol.
- the terminal device can know the correspondence between the random access channel resource index and the random access channel resource in advance, and can determine the received random access control information according to the random access channel resource index in the terminal set identifier information sent by the network device. Whether it contains the processing result of the random access procedure initiated by itself.
- 1 is a flow chart of a random access procedure of an M2M system
- FIG. 2 is a schematic network structure diagram of an M2M system
- FIG. 3 is a schematic structural diagram of a wireless communication system provided by the present application.
- FIG. 4 is a flowchart of interaction between a network device and a terminal device in the present application
- FIG. 5 is a schematic diagram of a PDCCH resource occupied by a network device sending a random access reject message according to an example 1 of the present application;
- Example 6 is a schematic diagram of a random access response message segmentation indication in Example 2 of the present application.
- Example 7 is a schematic diagram of cell waiting time in Example 2 of the present application.
- Example 8 is a schematic diagram of area information in Example 2 of the present application.
- FIG. 10 is a schematic structural diagram of a first network device provided by the present application.
- FIG. 11 is a schematic structural diagram of a second network device provided by the present application.
- FIG. 12 is a schematic structural diagram of a first terminal device provided by the present application.
- FIG. 13 is a schematic structural diagram of a second terminal device provided by the present application.
- FIG. 15 is a flowchart of a second random access method provided by the present application.
- the network device sends the same random access control message to the random access procedure initiated by the N terminal devices in the M terminal device set, and the same random access control message is used to indicate that the network device is for the N
- the message includes terminal set identifier information, which is used to identify the N terminal devices; after receiving the random access control message, the terminal device acquires the terminal set identifier information in the message, and
- the N terminal devices identified by the terminal set identifier information include the self, the processing result of the random access procedure initiated by the network device to the terminal device is determined according to the received random access control message, where M and N are positive Integer
- the network device uses the same random access reject message to indicate the same processing result of the random access process to the N terminal devices in the M terminal device sets, which can save the sending random access rejection.
- the control channel resources occupied by the message solve the problem of limited control channel in the random access process.
- the same random access control message for the same set of terminal devices may be sent at the same resource location of the downlink control channel, and the downlink control may be saved because the terminal devices in the set share the same resource location of the downlink control channel.
- Resource occupancy of the channel
- the same random access control message for the M terminal device sets may be sent at the same resource location of the downlink control channel, and the terminal devices in the M terminal device sets share the same resource location of the downlink control channel, further saving Resource occupation of the downlink control channel.
- the random access response message and the random access reject message are both sent on the UE-specific PDCCH resource.
- the base station After the UE sends a random access request message to the base station on the Random Access CHannel (RACH) resource, the base station sends a random access response message or a random access reject message to the UE according to the current network congestion condition.
- RACH Random Access CHannel
- the random access of a large number of UEs in a short period of time may cause the network device to limit the PDCCH resources when transmitting a random access response message or a random access reject message to these large numbers of UEs.
- a typical application scenario of the resource location mode of the shared downlink control channel proposed in this application is as follows:
- the network device needs to reject the random access procedure initiated by the terminal device due to network congestion.
- the random access rejection caused by network congestion usually rejects a large number of terminal devices within a period of time, not just A single terminal device, so that the resource location of the shared downlink control channel is used to reduce the overhead of the downlink control channel, and the saved resources can be used for transmitting the proprietary information such as the terminal device data transmission scheduling, thereby further improving the data transmission efficiency.
- the downlink control channel resources of the network device can also be saved by adopting the present application.
- the random access process has a contention-based approach and a non-contention-based approach.
- the base station allocates a corresponding preamble (Preamble) and an access resource to the terminal device; in the contention-based random access, the terminal device randomly selects the access resource (for example, for LTE)
- the access resource is a RACH resource, performs preamble transmission, then receives a random access response, sends a message 3 (Message3, MSG3), and receives a contention conflict resolution message.
- M2M communication is the communication between the machine and the machine to transfer information and data to each other through the wireless network, and is an important direction for the next development of mobile communication. It is widely used in many fields, including intelligent transportation, building control systems, home intelligent control systems, video surveillance systems, industrial monitoring and so on.
- An illustrative network structure is shown in Figure 2. Among them, refrigerators, electric meters, automobiles, etc. can be used as terminal devices in the M2M system to communicate with other terminal devices through base stations, transmission networks, etc., such as communication between electric meters and automobiles.
- Possible reasons for triggering the random access procedure in the M2M system may include but are not limited to the following items:
- the terminal device initiates a random access procedure in the initial access process
- the terminal device may initiate a random access procedure;
- RRC Radio Resource Control
- RRC_IDLE Radio Resource Control
- RRC_CONNECTED Radio Resource Control
- the terminal device initiates a random access procedure in an RRC Connection Re-establishment procedure
- the base station has downlink data to be sent to the terminal device, and determines that the terminal device is in the RRC connected state, but the terminal device is in the uplink out-of-synchronization state, and the base station instructs the terminal device to initiate a random access procedure.
- the terminal device is in the RRC connected state.
- the terminal device needs to send uplink data to the base station, but finds that it is in the uplink out-of-synchronization state, the terminal device initiates a random access procedure.
- the random access control message includes, but is not limited to, a random access response message and a random access reject message, and may refer to a response message of the random access request message sent by the network device to the terminal device.
- the random access response message is used to indicate a random access procedure initiated by the responding terminal device, that is, a random access request for the terminal device is allowed; and the random access reject message is used to indicate that the random access procedure initiated by the terminal device is rejected.
- a terminal device set is a set consisting of one or more terminal devices, and usually one terminal device set includes a plurality of terminal devices.
- the terminal device in the same set of terminal devices has at least one of the following features:
- the device identifiers belong to the same device identifier set
- 3) belong to the same set of priorities. For example: service priority, scheduling priority, paging priority, etc.
- the wireless environment may be different, and the obstruction between the antenna antennas may be different, which may cause
- the signal strength is different, resulting in different signal receiving strengths for different terminal devices, and the coverage effect is different.
- the multiple terminal devices may be divided into multiple coverage levels according to the attenuation of the channel reaching the terminal device, and the terminal devices belonging to the same coverage level are similar to the coverage cells.
- an even device identifier belongs to one device identifier set
- an odd device identifier belongs to another device identifier set.
- the device identifier is subjected to modulo 10 operation, the remaining one belongs to the device identifier set 1, the remaining 2 belongs to the set identifier set 2, and so on, and the remaining 0 belongs to the device identifier set 10.
- a service priority is predefined, and terminal devices having the same or similar service priorities belong to a priority set.
- 10 service priorities 1 to 10 are defined, and the priorities are sequentially decreased according to the number from small to large, and the priority set 1 is defined to include priority 1 to priority 4.
- the priority set 2 includes Priority 5 to priority 7, and priority set 3 includes priority 8 to priority 10.
- the terminal device priority is predefined, and the terminal device with the higher priority has a higher probability of obtaining the network resource than the terminal device with the lower priority.
- the priorities are sequentially decreased according to the number from small to large, and the priority set 1 is defined to include priorities 1, 2, and the priority set 2 includes Priority 3, 4.
- the random access reject message needs to be sent through a downlink control channel
- the downlink control channel may include one or more of a logical channel, a transport channel, and a physical channel.
- the downlink control channel can be a physical channel.
- the physical channel may be a PDCCH channel in a current M2M system.
- the network device when the network device sends a random access control message, the network device carries the random access control message through the downlink control channel.
- the M terminal device sets can correspond to the same resource location of the downlink control channel;
- the M terminal device sets correspond to different resource locations of the downlink control channel, for example, M terminal device sets correspond to M different resource locations of the downlink control channel.
- system and “network” are often used interchangeably throughout this application.
- the term “and/or” in the present application is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B.
- the character "/" in this article generally indicates that the contextual object is an "or" relationship.
- FIG. 3 is a schematic structural diagram of a wireless communication system provided by the present application.
- M is positive integers, and M is not greater than N.
- N terminal devices 302 are configured to send a random access request message to the network device 302 to initiate a random access procedure; and the network device 301 determines a random access procedure initiated by the N terminal devices 302. The same processing result, and sending the same random access control message to the N terminal devices 302, indicating the same processing result.
- M and N are positive integers, indicating that there may be various situations as follows:
- the network device 301 can send a random access control message for one terminal device 302 in a set of terminal devices;
- the network device 301 sends the same random access control message for a plurality of terminal devices 302 in a set of terminal devices;
- the network device 301 transmits the same random access control message for a plurality of terminal devices 302 of the plurality of terminal device sets.
- the purpose of saving control channel resources can be achieved by transmitting the same random access control message to each terminal device in a terminal device set.
- the communication system of the wireless communication system shown in FIG. 3 includes but is not limited to: Global System of Mobile communication (GSM), Code Division Multiple Access (CDMA) IS-95, and code division multiple access.
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- 2000 Time Division-Synchronous Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- LTE-advanced Personal Handy-phone System
- WiFi Wireless Fidelity
- 802.11 series of protocols Worldwide Interoperability for Microwave Access (WiMAX)
- WiMAX Worldwide Interoperability for Microwave Access
- WiMAX Worldwide Interoperability for Microwave Access
- future evolutions A wireless communication system.
- the terminal device 302 may be a wireless terminal, and the wireless terminal may be a device that provides voice and/or data connectivity to the user, a handheld device with a wireless connection function, or other processing device connected to the wireless modem.
- the wireless terminal can communicate with one or more core networks via a radio access network (eg, RAN, Radio Access Network), which can be a mobile terminal, such as a mobile phone (or "cellular" phone) and with a mobile terminal
- RAN Radio Access Network
- the computers for example, can be portable, pocket-sized, handheld, computer-integrated or in-vehicle mobile devices that exchange language and/or data with the wireless access network.
- a wireless terminal may also be called a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a Remote Station, an Access Point, and a Remote Terminal.
- Remote Terminal Access Terminal
- User Terminal User Agent
- User Equipment User Equipment
- the network device 301 may include a base station, or a radio resource management device for controlling the base station, or include a base station and a radio resource management device for controlling the base station; wherein the base station may be a macro station or a small station, such as a small cell.
- the base station may also be a home base station, such as a Home NodeB (HNB), a Home eNodeB (HeNB), etc., and the base station may also include a relay node. Wait.
- HNB Home NodeB
- HeNB Home eNodeB
- the network device 101 in the wireless communication system provided by the present application may be an evolved NodeB (eNodeB), and the terminal device 302 may be a UE;
- the SCDMA system or the WCDMA system the network device 301 in the wireless communication system provided by the present application may include: a Node B (NodeB) and/or a Radio Network Controller (RNC), and the terminal device 302 may be a UE;
- the network device 101 provided by the present application may include a Base Transceiver Station (BTS) and/or a Base Station Controller (BSC), and the terminal device 302 is a Mobile Station (MS);
- BTS Base Transceiver Station
- BSC Base Station Controller
- MS Mobile Station
- the network device 301 may include an Access Point (AP) and/or an Access Controller (AC), and the terminal device 302 may be a STA (STA).
- AP Access Point
- AC Access Controller
- STA STA
- FIG. 4 shows a flow diagram of interaction between network device 301 and terminal device 302. As shown in FIG. 4, the process includes the following steps:
- the terminal device 302 sends a random access request message to the network device 301, requesting access to the wireless communication system;
- each terminal device 302 does not initiate a random access procedure at the same time. Therefore, after receiving the random access request message sent by the terminal device 302, the network device 301 may determine the processing result of the terminal device 302. Without waiting to receive the transmission from each terminal device 302 After the random access request message, the processing result of the random access procedure initiated by each terminal device 302 is determined.
- the network device 301 determines the same processing result of the random access procedure initiated by the N terminal devices 302 in the M terminal device sets;
- the network device 301 sends the same random access control message to the N terminal devices 302 of the M terminal device sets, where the message carries the terminal set identification information, which is used to identify the N terminal devices 302;
- the network device 301 may wait for the random access request message sent by the other terminal device 302 for a period of time after determining the processing result of the random access procedure initiated by the one terminal device 302, and determine the random connection initiated by the other terminal device 302.
- the processing result of the incoming process is then used to indicate the same processing result of the random access procedure initiated by the terminal devices 302 through the same random access control message.
- the terminal device 302 After receiving the random access control message, the terminal device 302 obtains the terminal set identifier information from the message. When the terminal device identified by the terminal set identifier information includes the self, the terminal device 302 determines the random connection initiated by itself according to the random access control message. The processing result of the process.
- the random access control message may be ignored, and no further processing is performed.
- step S402 the network device 301 can determine the same processing result for the initiated random access procedure of the N terminal devices 302 in the M terminal device sets.
- the network device 301 sends a random access control message in step S403, and the terminal device 302 receives the random access control message according to different values of M.
- M ⁇ 2 indicates that the network device 301 can transmit the same random access control message for a plurality of terminal devices 302 of the plurality of terminal device sets.
- the same random access control message is sent at the same resource location of the downlink control channel corresponding to the M terminal device sets, which can greatly save resources of the downlink control channel.
- the terminal device 302 can receive the random access control message at the same resource location of the downlink control channel corresponding to the M terminal device sets.
- the network device 301 broadcasts channel resource location information, where the channel resource location information is used to indicate the same downlink control channel. Resource location.
- the terminal device 302 receives the channel resource location information broadcast by the network device 301, and determines the same resource location for sending the random access control message on the downlink control channel according to the channel resource location information.
- the same random access control message may be sent in different resource locations of the downlink control channel corresponding to the M terminal device sets, for example, in M different resource locations of the downlink control channel corresponding to the M terminal device sets.
- the network device 301 broadcasts channel resource location information, where the channel resource location information is used to indicate that the M terminal device sets respectively correspond to The resource location occupied by the random access control message is sent on the downlink control channel.
- the terminal device 302 receives the channel resource location information broadcasted by the network device 301, and determines the random access control sent by the downlink control channel to the set of terminal devices to which the terminal device belongs according to the channel resource location information and the terminal device set to which it belongs. The resources used by the message.
- the terminal device 302 in the different terminal device sets receives the random access control message at different resource locations of the downlink control channel, and can implement the difference processing on the different terminal device sets.
- the terminal devices 302 receive the receiving capability of the signals transmitted by the network device 301 due to different coverage levels.
- the scenario of the second scenario may be used to allocate different downlink control channel resources to the terminal devices 302 of different coverage levels, for example, to allocate resources of the downlink control channel with high anti-interference capability to the poorly-covered terminal device 302.
- these resources adopt low-order modulation and robust channel coding, for example, more repetitions are used on these channels to improve the signal reception quality of these terminal devices 302.
- the network device 301 sends a random access control message to the resource location corresponding to the same terminal device 302 to which the N terminal devices 302 belong in the downlink control channel.
- the terminal device 302 receives the random access control message at the resource location corresponding to the set of terminal devices to which the downlink control channel belongs.
- the network device 301 broadcasts channel resource location information, where the channel resource location information is used to indicate the same terminal device in the downlink control channel.
- the corresponding resource location of the collection is used to indicate the same terminal device in the downlink control channel.
- the terminal device 302 receives the channel resource location information broadcast by the network device 301, and determines, according to the channel resource location information, a resource location corresponding to the terminal device set to which it belongs.
- an example of the network device 301 sending a random access control message at a resource location of a different downlink control channel may refer to the following example 1.
- the terminal set identification information in the random access control message includes one or more of the following information:
- the type information is used to indicate the same terminal device type to which the N terminal devices 302 belong;
- the network device 301 can notify the multiple terminal devices 302 of the same terminal device type through the same random access control message, and randomly initiate the multiple terminal devices 302. The processing result of the access process.
- the plurality of terminal devices 302 having the specified terminal device type can perform random access control for the same random access resource region in which the random access resources are located.
- the network The device 301 may only need to reject the terminal device 302 whose terminal device type is a non-emergency reporting terminal device, and the type of the terminal device 302 for which the random access control message is directed is only the non-emergency reporting terminal device.
- the type information may include one or more pieces of information, such as an Information Element (IE) special UE indication in Table 2 and Table 4 in Example 2, which may be used to indicate the type of terminal equipment that is urgently reported and Type of terminal device that is not urgently reported.
- IE Information Element
- Table 2 and Table 4 can be used to indicate the application group to which the terminal device 302 belongs, and 4 bits can indicate 16 application groups.
- the area information is used to indicate: the same random access resource area in which the random access resources used by the N terminal devices 302 are used in the initiated random access procedure.
- the network device 301 can notify the multiple terminal devices 302 located in the same random access resource region of the processing result of the random access procedure initiated by the multiple terminal devices 302 by using the same random access control message.
- the area information may include a frame number and intra-frame location information of the random access resource
- the frame number of the random access resource is used to indicate the frame number of the frame where the random access resource located in the same random access resource region is located, for example, the IE: PRACH frame in Tables 1 to 4 in the second example.
- the intra-frame location information is used to indicate the location of the same random access resource region in the frame indicated by the frame number of the random access resource, for example, the IE in the Table 2 and Table 4 in the second example: the PRACH location indication (PRACH position indication)
- the implementation of the intra-frame location information may be in one of the following ways:
- the intra-frame location information includes: frequency domain start location information, frequency domain termination location information, time domain start location information, and time domain termination location information;
- the intra-frame location information includes: frequency domain start location information, frequency domain bandwidth, time domain start location information, and time domain duration;
- the intra-frame location information includes: time domain location information, where the same random access resource region occupies the entire bandwidth occupied by the random access channel in the frequency domain, and occupies one or more times indicated by the time domain location information in the time domain. unit;
- the intra-frame location information includes: frequency domain location information, and the same random access resource region occupies one or more frequency domain units indicated by the frequency domain location information in the frequency domain, and occupies the random access channel in the time domain. The entire time period;
- the intra-frame location information includes: one or more random access channel resource indexes, and each random access channel resource index is used to indicate a resource of a random access channel used by a terminal device 302 to send a random access request message.
- the network device 301 may broadcast the correspondence between the random access channel resource index and the random access channel resource before the step S403.
- the correspondence between the random access channel resource index and the random access channel resource is pre-defined by the protocol.
- An example of a random access control message can be referred to the following example three.
- Each of the different sets of terminal devices here comprises one or more terminal devices, ie the aforementioned N terminal devices, but N may be different for different groups.
- N may be different for different groups.
- a specific example can be found in the following example four.
- the random access control message sent by the network device 301 is a random access reject message
- the network device 301 sends the downlink control channel occupied by the random access reject message to the PDCCH, and the terminal devices in different terminal device sets belong to different coverages. grade.
- FIG. 5 is a schematic diagram of a PDCCH resource occupied by a network device 301 by using a random access reject message in the first example.
- the network device 301 configures a common PDCCH resource for each coverage level, and the common PDCCH resource can be used to send a random access reject message to the terminal device 302 of the corresponding coverage level.
- the network device 301 may configure a part of the location of each coverage level PDCCH resource block as a common PDCCH resource of the coverage level, and indicate the configured PDCCH resource in the system message.
- the network device 301 may indicate, in an System Information (SI), an offset (offset) cell, which of the previous PDCCH resources of each coverage level is the common PDCCH resource of the coverage level.
- SI System Information
- offset offset
- the system message is sent on a Physical Broadcast CHannel (PBCH).
- PBCH Physical Broadcast CHannel
- CC Cross Class
- CC Cross Class
- different numbers indicate different coverage levels.
- the resources marked by CC1 to CC4 are common PDCCH resources of coverage level 1 to coverage level 4 configured by the network device 301.
- the M2M system is taken as an example to describe the random access response message.
- the format of the random access response message can be as shown in Table 1.
- the format of the random access response message can be as shown in Table 2.
- the random access response message may adopt a segment indication method, first indicating a random access procedure initiated by the responding terminal device through a common random access response message, and then, through the terminal device-specific
- the random access response message instructs the terminal device to send information such as uplink resources that can be used by the message 3 (Message3, Msg3).
- a plurality of UEs including UE1, UE2, and UE3 can be randomly accessed by transmitting a common random access response message on a common PDCCH resource, and then PDCCH resources dedicated to the UE are respectively used.
- UE1, UE2, and UE3 indicate to send uplink resources that Msg3 can use. If the terminal indicated by the terminal set identifier information in the random access response message is not included in the public PDCCH resource, the terminal device may not need to read the dedicated random access response message, thereby reducing the processing load of the terminal device. .
- the advantage of this design is that if the terminal device determines that the random access procedure initiated by itself is responded according to the public random access response message, the subsequent dedicated random access response message is read, thereby reducing the processing load of the terminal device. .
- the format of the random access reject message can be as shown in Table 3.
- the Message ID indicates a message type, and the description is a random access reject message
- MS access identity refers to the terminal device identifier (UE ID) that is denied access
- a physical random access (CHACH) frame indicating a frame number of a frame in which the RACH resource occupied by the rejected random access request message is located;
- the PRACH start position indicates that the PRACH resource is in the PRACH.
- the Wait time indicates how long the terminal device has to wait at least before it can initiate random access.
- the format of the random access reject message may be as shown in Table 4.
- Figure 7 shows the meaning of the IE wait time in Tables 3 and 4.
- the terminal device 302 sends a random access request message to the network device 301 to initiate a random access procedure, and the network device 301 sets the terminal to the terminal.
- the standby 302 sends a random access reject message, and the message carries the IE waiting time.
- the terminal device 302 waits according to the "waiting time" in the message, and sends a random access request message to the network device 301 again when the waiting time ends.
- Ntrans_max in FIG. 7 indicates the number of times the terminal device 302 transmits a random access request message.
- the current maximum number of random access requests sent is indicated in the system message. No need to indicate in the response message. But it can be used as an alternative IE.
- the intra-frame location information includes: one or more random access channel resource indexes, and each random access channel resource index is used to indicate that one terminal device 302 sends a random access request message.
- the random access request 1 to the random access request 10 respectively represent 10 random access channel resource indexes. It is assumed that FIG. 8 shows a random access resource (RACH resource) in one frame, and the random access channel resource index value may be sequentially increased from left to right and from top to bottom.
- RACH resource random access resource
- the PRACH location indication may be set in the random access reject message, including random access. Incoming request 1 and random access request 2 are sufficient.
- the intra-frame location information includes two IEs: a PRACH start position indication and a duration, if the network device 301 wants to reject a certain segment.
- the two IE implementations can be set for all random access procedures initiated within the time-frequency resource. For example, setting the PRACH start location indication to “1” indicates that the starting location of the random access resource occupied by the rejected random access procedure is the random access resource indicated by the first index in the frame, and setting The number of continuation is "3", indicating that the random access procedure initiated on consecutive 3 random access resources starting from the starting position is rejected.
- the network device 301 may implement the third location information in the frame, indicating the start slot number and the ending slot number in the frame. Indicates that the random access procedure initiated on all random access resources on the entire bandwidth occupied by the PRACH in the time range is rejected. Or, in the third manner, the corresponding relationship between the time domain location index and the time domain location occupied by the random access resource is predefined. As shown in FIG. 8, by setting the intra-location information including the time domain location index 1 to 3, the PRACH frame may be indicated. All random access procedures initiated during this period.
- the network device 301 may implement the fourth location information in the frame to indicate the initial frequency domain location and the termination frequency in the frame.
- the domain location indicates that the random access procedure initiated on all random access resources in the frequency domain is rejected during the entire time period in which the PRACH frame continues.
- the corresponding relationship between the frequency domain location index and the frequency domain location occupied by the random access resource is predefined. As shown in FIG. 8, by setting the intra-location information including the frequency domain location indexes 1 and 3, it may be indicated that all the random access resources in the two frequency domain ranges are initiated during the entire time period in which the PRACH frame continues. The random access process was rejected.
- the network device 301 may be implemented by using the intra-frame location information in the first mode or the second mode.
- the intra-frame location information may include four IEs: a PRACH frequency domain start location indication, a PRACH frequency domain termination location indication, a PRACH time domain start location indication, and a PRACH time domain termination location indication.
- the PRACH frequency domain start position indication is "1”
- the PRACH frequency domain termination position indication is "2”
- the PRACH time domain start position indication is "2”
- the PRACH time domain termination position indication is "4".
- Example 2 Comparing Table 1 and Table 2, and comparing Tables 3 and 4, in Example 2, the random access control message originally transmitted on the downlink control channel dedicated to the terminal device is changed to be sent on the common downlink control channel, and the message is sent.
- the IE mobile station access identifier is deleted in the format, and the IE special UE indication is added. In combination with the PRACH location indication, the random access procedure initiated by a certain type of UE on some random access resources may be rejected.
- the mobile station access identifier is removed, the message length is reduced, and the signaling overhead is reduced.
- the terminal device 302 and the network device 301 are illustrated by using a random access reject message as an example.
- the processing flow in the random access process As shown in FIG. 9, the process includes the following steps:
- the network device 301 sends a system message to each terminal device 302 (including the terminal device 302A to the terminal device 302D, and further includes other terminal devices 302), indicating a location of the random access resource, and the terminal device 302 reads the System message, obtaining the location of the random access resource;
- the terminal device 302A to the terminal device 302C belong to the coverage level 1, and the terminal device 302D belongs to the coverage level 2;
- S901 The terminal device 302A to the terminal device 302D respectively select a random access resource to send a random access request message.
- the network device 301 After receiving the random access request message sent by each terminal device 302, the network device 301 decides to reject the terminal device type terminal in the coverage level 1 and on the part of the random access resource by the non-emergency report according to the system congestion condition. a random access procedure initiated by the device 302;
- the network device 301 sends a random access reject message on the resource corresponding to the coverage level 1 on the PDCCH, and indicates, by using the IE special UE indication in Table 4, that the random connection initiated by the non-emergency terminal device type terminal device 302 is rejected.
- the incoming procedure, and by the IE PRACH location indication in Table 4, indicates that the random access procedure initiated on the partial random access resource is rejected.
- the terminal device 302A to the terminal device 302C receive the random access reject message sent by the network device 301 on the resource corresponding to the coverage level 1 on the PDCCH;
- S904 The terminal device 302B and the terminal device 302A determine that the random access procedure initiated by the terminal is rejected according to the terminal set identifier information.
- the terminal device 302C has the terminal device type of the emergency call, and the random access resource indicated in the terminal set identifier information does not include the random access resource occupied by the terminal device 302C to send the random access request message, and the random access is ignored. Reject the message.
- the rejected terminal device 302 waits for "waiting time” before initiating a random access procedure.
- the network device 301 sends a random access reject message of the group on the common PDCCH, and the certain types of terminal devices 302 on the random access resources are denied access, and the PDCCH resources are saved in batches. .
- P is a positive integer.
- the P indication information may be a bitmap, where each bit in the bitmap corresponds to one of the foregoing random access resource regions, and the P bits in the bitmap correspond to P random accesses. Resource area. A certain position in the bitmap is “0”, indicating that the random access procedure on the corresponding random access resource area is responded, and “1” indicates that the random access procedure on the corresponding random access resource area is rejected.
- FIG. 10 is a schematic structural diagram of a first network device provided by the present application. As shown in FIG. 10, the network device includes:
- the processing module 1001 is configured to determine the same processing result of the random access procedure initiated by the N terminal devices in the M terminal device sets, where M and N are positive integers;
- the sending module 1002 is configured to send the same random access control message to the N terminal devices that initiate the random access process, where the random access control message is used to indicate the same processing result determined by the processing module 1001, where the message includes the terminal set identifier information.
- the terminal set identifier information is used to identify N terminal devices.
- the sending module 1002 is specifically configured to:
- the sending module 1002 is further configured to:
- the channel resource location information is broadcasted, and the channel resource location information is used to indicate the same resource location.
- the sending module 1002 is specifically configured to:
- the random access control message is sent in the downlink control channel and at the same resource location corresponding to the same terminal device set to which the N terminal devices belong.
- the sending module 1002 is further configured to:
- the channel resource location information is used to indicate the same resource location corresponding to the same terminal device set in the downlink control channel.
- all terminal devices in each terminal device set have at least one of the following features:
- Device IDs belong to the same set of device IDs
- the terminal set identification information includes one or more of the following information:
- Type information the type information is used to indicate the same terminal device type to which the N terminal devices belong;
- the area information is used to indicate: the same random access resource area in which the random access resources used by the N terminal devices in the initiated random access procedure are located.
- the area information includes a frame number and intra-frame location information of the random access resource
- the frame number of the random access resource is used to indicate the frame number of the frame where the random access resource located in the same random access resource region is located;
- the intra-frame location information is used to indicate the location of the same random access resource region in the frame indicated by the frame number where the random access resource is located;
- the intra-frame location information includes: frequency domain start location information, frequency domain termination location information, time domain start location information, and time domain termination location information; or
- the intra-frame location information includes: frequency domain start location information, frequency domain bandwidth, time domain start location information, and time domain duration; or
- the intra-frame location information includes: time domain location information, where the same random access resource region occupies the entire bandwidth occupied by the random access channel in the frequency domain, and is occupied by the time domain location information in the time domain.
- time domain location information where the same random access resource region occupies the entire bandwidth occupied by the random access channel in the frequency domain, and is occupied by the time domain location information in the time domain.
- the intra-frame location information includes: frequency domain location information, and the same random access resource region occupies one or more frequency domain units indicated by the frequency domain location information in the frequency domain, and occupies the random access channel in the time domain. The entire time period; or
- the intra-frame location information includes: one or more random access channel resource indexes, and each random access channel resource index is used to indicate a resource of a random access channel used by a terminal device to send a random access request message.
- the sending module 1002 is further configured to: the in-frame location information includes one or more random access channel resource indexes, where each random access channel resource index is used to indicate that a terminal device sends a random access request message.
- the resource of the random access channel is used, the correspondence between the random access channel resource index and the random access channel resource is broadcasted before the network device sends the random access control message; or
- the correspondence between the random access channel resource index and the random access channel resource is pre-defined by the protocol.
- the processing module 1001 is configured to perform a processing operation of the network device 301
- the sending module 1002 is configured to perform a sending operation of the network device 301.
- the communication system of the wireless communication system in which the network device shown in FIG. 10 is located may be the communication system of the wireless communication system shown in FIG. 3, and the specific implementation form of the network device, such as a base station, a radio resource management device, or the like.
- Various implementations of the network device 301 as described above are also possible.
- the resource location of the downlink control channel occupied by the network device shown in FIG. 10 when the random access control message is sent may also refer to case 1 and case 2 of the foregoing resource location.
- terminal set identifier information sent by the network device shown in FIG. 10 refer to the foregoing description of the terminal set identifier information in step S403 and step S404.
- the processing module 1001 can be implemented by a processor, the transmitting module 1002 can be implemented by a transmitter, and the signal transmitted by the transmitting module 1002 can be transmitted through one or more antennas.
- the specific implementation manner of the occupied downlink control channel resource, and the specific process refer to the previous example 1, the second example, the third example, and the fourth example about the network device 301. description.
- the network device shown in FIG. 10 can be used to perform the first random access method shown in FIG.
- FIG. 11 is a schematic structural diagram of a second network device provided by the present application. As shown in FIG. 11, the network device includes:
- the processor 1101 is configured to determine the same processing result of the random access procedure initiated by the N terminal devices in the M terminal device sets, where M and N are positive integers;
- the transmitter 1102 is configured to send the same random access control message to the N terminal devices that initiate the random access process, where the random access control message is used to indicate the same processing result determined by the processor 1101, where the message includes the terminal set identifier information.
- the terminal set identifier information is used to identify N terminal devices.
- processor 1101 may refer to the processing module 1001.
- transmitter 1102 may refer to the transmitting module 1002.
- the processor 1101 is configured to perform processing operations of the network device 301
- the transmitter 1102 is configured to perform a transmitting operation of the network device 301.
- the communication system of the wireless communication system in which the network device shown in FIG. 11 is located may be the communication system of the wireless communication system shown in FIG. 3, and the specific implementation form of the network device, such as a base station, a radio resource management device, or the like.
- Various implementations of the network device 301 as described above are also possible.
- the resource location of the downlink control channel occupied by the network device shown in FIG. 11 when the random access control message is sent may also refer to case 1 and case 2 of the foregoing resource location.
- the optional implementation manner of the terminal set identifier information sent by the network device shown in FIG. 11 may refer to the foregoing process shown in FIG. 4, and the terminal set identifier information in step S403 and step S404. description.
- the specific format of the message sent by the network device shown in FIG. 11 , the specific implementation manner of the occupied downlink control channel resource, and the specific process may refer to the foregoing example 1, example 2, example 3, and example 4 regarding the network device 301. description.
- the network device shown in FIG. 11 can be used to perform the first random access method shown in FIG.
- FIG. 12 is a schematic structural diagram of a first terminal device provided by the present application. As shown in FIG. 12, the terminal device includes:
- the receiving module 1201 is configured to receive a random access control message that is sent by the network device in response to the random access procedure initiated by the terminal device;
- the processing module 1202 is configured to obtain terminal set identifier information in the random access control message received by the receiving module 1201, where the terminal set identifier information is used to identify N terminal devices in the M terminal device sets, where M and N are positive integers; And determining the processing result of the random access procedure initiated by the network device for the terminal device according to the random access control message when determining the identity of the terminal set identifier information.
- the receiving module 1201 is specifically configured to:
- the random access control message is received at the same resource location of the downlink control channel corresponding to the M terminal device sets.
- the receiving module 1201 is further configured to:
- receiving channel resource location information broadcast by the network device Before receiving the random access control message, receiving channel resource location information broadcast by the network device, where the channel resource location information is used to indicate the same resource location.
- the receiving module 1201 is specifically configured to:
- the random access control message is received at a resource location corresponding to the set of terminal devices to which the downlink control channel belongs.
- the receiving module 1201 is further configured to:
- the terminal device Before receiving the random access control message, the terminal device receives the channel resource location information that is broadcast by the network device, where the channel resource location information is used to indicate the same resource location corresponding to the terminal device set to which the terminal device belongs in the downlink control channel.
- all terminal devices in each terminal device set have at least one of the following features:
- Device IDs belong to the same set of device IDs
- the terminal set identification information includes one or more of the following information:
- Type information the type information is used to indicate the type of the terminal device to which the terminal device belongs;
- the area information is used to indicate a random access resource area in which the random access resource used by the terminal device in the initiated random access procedure is located.
- the area information includes a frame number and intra-frame location information of the random access resource
- the frame number of the random access resource is used to indicate the frame number of the frame where the random access resource located in the same random access resource region is located;
- the intra-frame location information is used to indicate the location of the same random access resource region in the frame indicated by the frame number where the random access resource is located;
- the intra-frame location information includes: frequency domain start location information, frequency domain termination location information, time domain start location information, and time domain termination location information; or
- the intra-frame location information includes: frequency domain start location information, frequency domain bandwidth, time domain start location information, and time domain duration; or
- the intra-frame location information includes: time domain location information, where the random access resource region occupies the entire bandwidth occupied by the random access channel in the frequency domain, and occupies one or more time units indicated by the time domain location information in the time domain; or
- the intra-frame location information includes: frequency domain location information, where the random access resource region occupies one or more frequency domain units indicated by the frequency domain location information in the frequency domain, and occupies the entire time occupied by the random access channel in the time domain. Paragraph; or
- the intra-frame location information includes: one or more random access channel resource indexes, and each random access channel resource index is used to indicate a resource of a random access channel used by a terminal device to send a random access request message.
- the receiving module 1201 is further configured to: the in-frame location information includes: one or more random access channel resource indexes, where each random access channel resource index is used to indicate that a terminal device sends a random access request message.
- the resource of the random access channel is used, the correspondence between the random access channel resource index broadcasted by the network device and the random access channel resource is received before the terminal device receives the random access reject message; or
- the correspondence between the random access channel resource index and the random access channel resource is pre-defined by the protocol.
- the processing module 1202 is configured to perform a processing operation of the terminal device 302
- the receiving module 1201 is configured to perform a receiving operation of the terminal device 302.
- the communication system of the wireless communication system in which the terminal device shown in FIG. 12 is located may be the communication system of the wireless communication system shown in FIG. 3, and the specific implementation form of the terminal device may also be various of the foregoing terminal device 302. Implementation form.
- the flow of the terminal device shown in FIG. 12 when interacting with the network device in the wireless communication system may refer to the foregoing process shown in FIG. 4.
- the resource location of the downlink control channel used by the terminal device shown in FIG. 12 when receiving the random access control message may also refer to case 1 and case 2 of the foregoing resource location.
- An alternative implementation manner of the terminal set identifier information received by the terminal device shown in FIG. 12 may refer to the description of the terminal set identifier information in step S403 and step S404 in the foregoing process shown in FIG. 4 .
- the processing module 1202 can be implemented by a processor
- the receiving module 1201 can be implemented by a receiver
- the receiving module 1201 can receive signals through one or more antennas.
- the specific format of the message received by the terminal device shown in FIG. 12, the specific implementation manner of the downlink control channel resource occupied by the received random access control message, and the specific process may refer to the foregoing example 1, example two, example three, and example four.
- the terminal device shown in FIG. 12 can be used to perform the second random access method shown in FIG.
- FIG. 13 is a schematic structural diagram of a second terminal device provided by the present application. As shown in Figure 13, this Terminal equipment includes:
- the receiver 1301 is configured to receive a random access control message that is sent by the network device in response to the random access procedure initiated by the terminal device;
- the processor 1302 is configured to obtain terminal set identifier information in the random access control message received by the receiver 1301, where the terminal set identifier information is used to identify N terminal devices in the M terminal device sets, where M and N are positive integers; And determining the processing result of the random access procedure initiated by the network device for the terminal device according to the random access control message when determining the identity of the terminal set identifier information.
- the terminal device shown in FIG. 13 For a specific implementation of the terminal device shown in FIG. 13, reference may be made to the foregoing terminal device 302, where the processor 1302 is configured to perform a processing operation of the terminal device 302, and the receiver 1301 is configured to perform a receiving operation of the terminal device 302.
- the communication system of the wireless communication system in which the terminal device shown in FIG. 13 is located may be the communication system of the wireless communication system shown in FIG. 3, and the specific implementation form of the terminal device may also be various according to the foregoing terminal device 302. Implementation form.
- the flow when the terminal device shown in FIG. 13 interacts with the network device in the wireless communication system can refer to the foregoing process shown in FIG. 4.
- the resource location of the downlink control channel used by the terminal device shown in FIG. 13 when receiving the random access control message may also refer to case 1 and case 2 of the foregoing resource location.
- the optional implementation manner of the terminal set identifier information received by the terminal device shown in FIG. 13 may refer to the description of the terminal set identifier information in step S403 and step S404 in the foregoing process shown in FIG. 4 .
- the specific format of the message received by the terminal device shown in FIG. 13 and the specific implementation manner of the downlink control channel resource occupied by the received random access control message, and the specific process may refer to the foregoing example 1, example 2, example 3, and example 4.
- the terminal device shown in FIG. 13 can be used to perform the second random access method shown in FIG.
- FIG. 14 is a flowchart of a first random access method provided by the present application. As shown in FIG. 14, the process includes the following steps:
- the network device determines the same processing result of the random access procedure initiated by the N terminal devices in the M terminal device sets, where M and N are positive integers;
- the network device sends the same random access control message to the N terminal devices that initiate the random access process, where the random access control message is used to indicate the same processing result, where the message includes the terminal set identifier information, and the terminal set identifier information is used. Identify N terminal devices.
- the network device sends the same random access control message to the N terminal devices that initiate the random access procedure, including:
- the network device sends a random access control message on the same resource location of the downlink control channel corresponding to the M terminal device sets.
- the method before the network device sends the same random access control message to the N terminal devices, the method further includes:
- the network device broadcasts channel resource location information, and the channel resource location information is used to indicate the same resource location.
- the network device sends the same random access control message to the N terminal devices, including:
- the network device sends a random access control message in a downlink control channel and at a resource location corresponding to the same terminal device set to which the N terminal devices belong.
- the method before the network device sends the same random access control message to the N terminal devices, the method further includes:
- the network device broadcasts channel resource location information, where the channel resource location information is used to indicate the same resource location corresponding to the same terminal device set in the downlink control channel.
- all terminal devices in each terminal device set have at least one of the following features:
- Device IDs belong to the same set of device IDs
- the terminal set identification information includes one or more of the following information:
- Type information the type information is used to indicate the same terminal device type to which the N terminal devices belong;
- the area information is used to indicate: the same random access resource area in which the random access resources used by the N terminal devices in the initiated random access procedure are located.
- the area information includes a frame number and intra-frame location information of the random access resource
- the frame number of the random access resource is used to indicate the frame number of the frame where the random access resource located in the same random access resource region is located;
- the intra-frame location information is used to indicate the location of the same random access resource region in the frame indicated by the frame number where the random access resource is located;
- the intra-frame location information includes: frequency domain start location information, frequency domain termination location information, time domain start location information, and time domain termination location information; or
- the intra-frame location information includes: frequency domain start location information, frequency domain bandwidth, time domain start location information, and time domain duration; or
- the intra-frame location information includes: time domain location information, where the same random access resource region occupies the entire bandwidth occupied by the random access channel in the frequency domain, and occupies one or more times indicated by the time domain location information in the time domain. Unit; or
- the intra-frame location information includes: frequency domain location information, and the same random access resource region occupies one or more frequency domain units indicated by the frequency domain location information in the frequency domain, and occupies the random access channel in the time domain. The entire time period; or
- the intra-frame location information includes: one or more random access channel resource indexes, and each random access channel resource index is used to indicate a resource of a random access channel used by a terminal device to send a random access request message.
- each random access channel resource index is used to indicate a random access channel used by a terminal device to send a random access request message. Resources
- the method further includes: the network device broadcasts a correspondence between the random access channel resource index and the random access channel resource; or
- the correspondence between the random access channel resource index and the random access channel resource is a protocol pre-specified of.
- the communication system of the wireless communication system in which the network device is located may be the communication system of the wireless communication system shown in FIG. 3, and the specific implementation form of the network device, such as: base station, radio resource management.
- the device or the like may also be in various implementation forms of the network device 301 as described above.
- the flow when the network device interacts with the terminal device in the wireless communication system may refer to the foregoing process shown in FIG. 4.
- the resource location of the downlink control channel occupied by the network device when the random access control message is sent may also refer to Case 1 and Case 2 of the foregoing resource location.
- the optional implementation manner of the terminal set identifier information may refer to the description of the terminal set identifier information in steps S403 and S404 in the foregoing process shown in FIG.
- the specific format of the message sent by the network device, the specific implementation manner of the occupied downlink control channel resource, and the specific process may refer to the previous example 1, the second example, the third example, and the fourth example. Description of device 301.
- FIG. 15 is a flowchart of a second random access method provided by the present application. As shown in FIG. 15, the method includes the following steps:
- the terminal device receives a random access control message that is sent by the network device in response to the random access procedure initiated by the terminal device.
- the terminal device acquires terminal set identifier information in the random access control message, where the terminal set identifier information is used to identify N terminal devices in the M terminal device sets, where M and N are positive integers;
- the terminal device determines, according to the random access control message, a processing result of the random access procedure initiated by the network device for the terminal device, when determining that the terminal set identifier information includes the identifier of the terminal.
- the terminal device receives the random access control message, including:
- the terminal device receives the random access control message on the same resource location of the downlink control channel corresponding to the M terminal device sets.
- the method before the terminal device receives the random access control message, the method further includes:
- the terminal device receives channel resource location information broadcast by the network device, and the channel resource location information is used to indicate the same resource location.
- the terminal device receives the random access control message, including:
- the terminal device receives the random access control message on the resource location corresponding to the set of terminal devices to which the downlink control channel belongs.
- the method before the terminal device receives the random access control message, the method further includes:
- the terminal device receives channel resource location information broadcasted by the network device, where the channel resource location information is used to indicate a resource location corresponding to the terminal device set to which the terminal device belongs in the downlink control channel.
- all terminal devices in each terminal device set have at least one of the following features:
- Device IDs belong to the same set of device IDs
- the terminal set identification information includes one or more of the following information:
- Type information the type information is used to indicate the type of the terminal device to which the terminal device belongs;
- the area information is used to indicate a random access resource area in which the random access resource used by the terminal device in the initiated random access procedure is located.
- the area information includes a frame number and intra-frame location information of the random access resource
- the frame number of the random access resource is used to indicate the frame number of the frame where the random access resource located in the same random access resource region is located;
- the intra-frame location information is used to indicate the location of the same random access resource region in the frame indicated by the frame number where the random access resource is located;
- the intra-frame location information includes: frequency domain start location information, frequency domain termination location information, time domain start location information, and time domain termination location information; or
- the intra-frame location information includes: frequency domain start location information, frequency domain bandwidth, time domain start location information, and time domain duration; or
- the intra-frame location information includes: time domain location information, where the random access resource region occupies the entire bandwidth occupied by the random access channel in the frequency domain, and occupies one or more time units indicated by the time domain location information in the time domain; or
- the intra-frame location information includes: frequency domain location information, where the random access resource region occupies one or more frequency domain units indicated by the frequency domain location information in the frequency domain, and occupies the entire time occupied by the random access channel in the time domain. Paragraph; or
- the intra-frame location information includes: one or more random access channel resource indexes, and each random access channel resource index is used to indicate a resource of a random access channel used by a terminal device to send a random access request message.
- each random access channel resource index is used to indicate a random access channel used by a terminal device to send a random access request message. Resources
- the method further includes: receiving, by the terminal device, a correspondence between a random access channel resource index broadcast by the network device and a random access channel resource; or
- the correspondence between the random access channel resource index and the random access channel resource is pre-defined by the protocol.
- the communication system of the wireless communication system in which the terminal device is located may be the communication system of the wireless communication system shown in FIG. 3, and the specific implementation form of the terminal device may also be the same as the foregoing terminal device 302. An implementation form.
- the flow when the terminal device interacts with the network device in the wireless communication system may refer to the foregoing process shown in FIG. 4.
- the resource location of the downlink control channel used by the terminal device when receiving the random access control message may also refer to Case 1 and Case 2 of the foregoing resource location.
- the optional implementation manner of the terminal set identifier information received by the terminal device may refer to the description of the terminal set identifier information in step S403 and step S404 in the foregoing process shown in FIG. 4.
- the specific format of the message received by the terminal device, the specific implementation manner of the downlink control channel resource occupied by the received random access control message, and the specific process may refer to the foregoing example 1, example 2, and example 3. And a description of the terminal device 302 in the fourth example.
- the network device sends the same random access control message to the random access procedure initiated by the N terminal devices in the M terminal device set, and the same random access control message is used to indicate the network device.
- the message includes terminal set identifier information, which is used to identify the N terminal devices; after receiving the random access control message, the terminal device acquires the terminal set identifier information in the message, And determining, according to the received random access control message, a processing result of the random access procedure initiated by the network device to the terminal device, where the M terminal device is included in the N terminal devices identified by the terminal set identifier information, where N is a positive integer;
- the network device uses the same random access reject message to indicate the same processing result of the random access procedure to the N terminal devices in the M terminal device sets, which can save the control channel resources occupied by the random access denial message.
- the same random access control message for the same terminal device set may be sent at the same resource location of the downlink control channel, and the downlink control may be saved because the terminal devices in the set share the same downlink control channel resource location.
- the same random access control message for the M terminal device sets may be sent at the same resource location of the downlink control channel, and the terminal devices in the M terminal device sets share the same downlink control channel resource location, further saving Resource occupation of the downlink control channel.
- embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
- computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
- the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
- the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.
- These computer program instructions can also be loaded onto a computer or other programmable data processing device such that a series of operational steps are performed on a computer or other programmable device to produce computer-implemented processing for execution on a computer or other programmable device.
- the instructions provide steps for implementing the functions specified in one or more of the flow or in a block or blocks of a flow diagram.
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Abstract
本申请涉及无线通信技术,尤其涉及一种随机接入设备、方法及系统,用以解决随机接入过程中的控制信道受限的问题。在本申请提供的一种网络设备中,处理模块,用于确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;发送模块,用于向N个终端设备发送同一条随机接入控制消息,随机接入控制消息用于指示处理模块确定的同一处理结果,消息中包括终端集合标识信息,终端集合标识信息用于标识N个终端设备。网络设备使用同一条随机接入拒绝消息向N个终端设备指示随机接入过程的同一处理结果,可节省发送随机接入拒绝消息所占用的控制信道资源,解决了随机接入过程中的控制信道受限的问题。
Description
本申请涉及无线通信技术,尤其涉及一种随机接入设备、方法及系统。
在长期演进(Long Term Evolution,LTE)系统中,用户设备(User Equipment,UE)通过随机接入过程与小区建立连接并取得上行同步,只有取得上行同步,UE才能进行上行传输。
类似地,在机器和机器(M2M,Machine-to-Machine)系统中,UE也同样需要随机接入过程来建立连接与完成上行同步。
与LTE系统稍有不同,M2M系统中除了有随机接入响应消息,还会有随机接入拒绝消息。如图1所示,演进节点B(evolved NodeB,eNB)收到UE发送的随机接入请求(Random Access Request)消息后,通过随机接入响应(Random Access Response)消息通知UE接入,或者通过发送随机接入拒绝(Random Access Reject)消息拒绝UE接入,并告知UE等待一段时间后重新发起随机接入过程。两者都是在物理下行控制信道(Physical Downlink Control CHannnel,PDCCH)上发送的。
通常M2M系统中,UE数量巨大。比如:一个监测网络中包括数以万计的监测节点,在一段时间内,可能发生随机接入的节点数量很多,而随机接入响应或者拒绝消息由于是在PDCCH上发送的,而PDCCH资源同时还会用来发送调度消息或寻呼消息,这会导致PDCCH资源受限。
比如:在一些应急场景例如火灾预警中,可能很多UE都监测到突发事件,例如火灾的发生,短时间内大量UE同时发起随机接入过程,演进节点B(evolved NodeB,eNB)根据网络负载情况要在PDCCH上给这些UE发送随机接入响应或拒绝消息,这时候PDCCH受限的情况会更明显。
综上,在目前的诸如M2M系统等无线通信系统中,当需要针对多个终端
设备发起的随机接入过程进行处理时,可能存在控制信道受限的问题。
发明内容
有鉴于此,提供一种随机接入设备、方法及系统,用以解决随机接入过程中的控制信道受限的问题。
第一方面,本申请提供一种网络设备,包括:
处理模块,用于确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;
发送模块,用于向发起随机接入过程的所述N个终端设备发送同一条随机接入控制消息,所述随机接入控制消息用于指示所述处理模块确定的所述同一处理结果,消息中包括终端集合标识信息,所述终端集合标识信息用于标识所述N个终端设备。
第二方面,本申请提供一种网络设备,包括:
处理器,用于确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;
发射器,用于向发起随机接入过程的所述N个终端设备发送同一条随机接入控制消息,所述随机接入控制消息用于指示所述处理器确定的所述同一处理结果,消息中包括终端集合标识信息,所述终端集合标识信息用于标识所述N个终端设备。
第三方面,本申请提供一种终端设备,包括:
接收模块,用于接收网络设备响应于所述终端设备发起的随机接入过程而发送的随机接入控制消息;
处理模块,用于获取所述接收模块接收的所述随机接入控制消息中的终端集合标识信息,所述终端集合标识信息用于标识M个终端设备集合中的N个终端设备,M和N为正整数;以及在确定所述终端集合标识信息所包括自身的标识时,根据所述随机接入控制消息确定所述网络设备针对所述终端设备发起的随机接入过程的处理结果。
第四方面,本申请提供一种终端设备,包括:
接收器,用于接收网络设备响应于所述终端设备发起的随机接入过程而发送的随机接入控制消息;
处理器,用于获取所述接收器接收的所述随机接入控制消息中的终端集合标识信息,所述终端集合标识信息用于标识M个终端设备集合中的N个终端设备,M和N为正整数;以及在确定所述终端集合标识信息所包括自身的标识时,根据所述随机接入控制消息确定所述网络设备针对所述终端设备发起的随机接入过程的处理结果。
第五方面,本申请提供一种随机接入方法,包括:
网络设备确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;
所述网络设备向发起随机接入过程的所述N个终端设备发送同一条随机接入控制消息,所述随机接入控制消息用于指示所述同一处理结果,消息中包括终端集合标识信息,所述终端集合标识信息用于标识所述N个终端设备。
第六方面,本申请提供一种随机接入方法,包括:
终端设备接收网络设备响应于所述终端设备发起的随机接入过程而发送的随机接入控制消息;
所述终端设备获取所述随机接入控制消息中的终端集合标识信息,所述终端集合标识信息用于标识M个终端设备集合中的N个终端设备,M和N为正整数;
所述终端设备确定所述终端集合标识信息所包括自身的标识时,根据所述随机接入控制消息确定所述网络设备针对所述终端设备发起的随机接入过程的处理结果。
第七方面,本申请提供一种无线通信系统,包括:
网络设备,用于确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;并向发起随机接入过程的所述N个终端设备发送同一条随机接入控制消息,所述随机接入控制消息用于
指示所述同一处理结果,消息中包括终端集合标识信息,所述终端集合标识信息用于标识所述N个终端设备;
终端设备,用于接收网络设备响应于所述终端设备发起的随机接入过程而发送的随机接入控制消息,获取所述随机接入控制消息中的终端集合标识信息,并在确定所述终端集合标识信息所包括自身的标识时,根据所述随机接入控制消息确定所述网络设备针对所述终端设备发起的随机接入过程的处理结果。
本申请中,网络设备针对M个终端设备集合中的N个终端设备发起的随机接入过程,发送同一条随机接入控制消息,该同一条随机接入控制消息用于指示网络设备针对该N个终端设备的同一处理结果,消息中包括终端集合标识信息,用于标识所述N个终端设备;终端设备在收到随机接入控制消息后,获取消息中的终端集合标识信息,并在该终端集合标识信息所标识的所述N个终端设备中包括自身时,根据收到的随机接入控制消息确定网络设备对终端设备发起的随机接入过程的处理结果,其中,M和N为正整数;
其中,网络设备使用同一条随机接入拒绝消息向M个终端设备集合中的N个终端设备指示随机接入过程的同一处理结果,可节省发送随机接入拒绝消息所占用的控制信道资源,解决了随机接入过程中的控制信道受限的问题。
结合上述任一方面,在第一种可能的实现方式中,当M=1时,所述随机接入控制消息是在下行控制信道中、且在所述N个终端设备所属的同一终端设备集合所对应的同一资源位置上发送的。
由于集合内的终端设备共用相同的下行控制信道资源位置,可以节省下行控制信道的资源占用。
结合第一种可能的实现方式,在上述任一方面的第二种可能的实现方式中,在同一条随机接入控制消息被发送给所述N个终端设备发送之前,信道资源位置信息被广播,该所述信道资源位置信息用于指示所述同一资源位置。
这样终端设备可预先知道随机接入控制消息占用的资源位置,以便接收随机接入控制消息。
结合上述任一方面,在第三种可能的实现方式中,当M≥2时,所述随机接入控制消息是在所述M个终端设备集合所对应的下行控制信道的同一资源位置上发送的。
由于M个终端设备集合中的终端设备共用下行控制信道的同一资源位置,进一步节省下行控制信道的资源占用。
结合第三种可能的实现方式,在上述任一方面的第四种可能的实现方式中,在同一条随机接入控制消息被发送给所述N个终端设备之前,信道资源位置信息被广播,所述信道资源位置信息用于指示所述下行控制信道中所述M个终端设备集合所对应的同一资源位置。
这样终端设备可预先知道随机接入控制消息占用的资源位置,以便接收随机接入控制消息。
结合上述任一方面,及任一方面的任一种可能的实现方式,在第五种可能的实现方式中,每个终端设备集合中的全部终端设备具有如下特征中的至少一个:
属于相同的覆盖等级;
设备标识属于相同的设备标识集合;
属于相同的优先级集合。
实现了针对具有相同特征的终端设备进行统一处理。
结合上述任一方面,及任一方面的任一种可能的实现方式,在第六种可能的实现方式中,所述终端集合标识信息包括下列信息中的一种或多种:
类型信息,所述类型信息用于指示所述N个终端设备所属的同一种终端设备类型;
区域信息,所述区域信息用于指示:所述N个终端设备在发起的所述随机接入过程中使用的随机接入资源所位于的同一个随机接入资源区域。
若终端集合标识信息包括类型信息,则可实现按照终端设备类型标识N个终端设备,指示N个终端设备接收随机接入控制消息,并确定随机接入过程的结果,只有当终端设备的类型为类型信息所指示的类型时,终端设备才
能确认接收的随机接入控制消息中包含对自身发起的随机接入过程的处理结果。
若终端集合标识信息包括区域信息,则可实现按照终端设备发起随机接入过程使用的随机接入资源来标识N个终端设备,指示N个终端设备接收随机接入控制消息,并确定随机接入过程的结果,只有当终端设备发起随机接入过程使用的随机接入资源位于该区域信息指示的随机接入资源区域时,终端设备才能确认接收的随机接入控制消息中包含对自身发起的随机接入过程的处理结果。
若终端集合标识信息包括类型信息和区域信息,则可实现按照终端设备发起随机接入过程使用的随机接入资源以及终端设备的类型来表示N个终端设备,指示N个终端设备接收随机接入控制消息,并确定随机接入过程的结果,只有当终端设备发起随机接入过程使用的随机接入资源位于该区域信息指示的随机接入资源区域,且终端设备的类型为类型信息所指示的类型时,,终端设备才能确认接收的随机接入控制消息中包含对自身发起的随机接入过程的处理结果。
结合上述任一方面的第六种可能的实现方式,在第七种可能的实现方式中,区域信息包括随机接入资源所在帧号和帧内位置信息;
所述随机接入资源所在帧号用于指示所述同一个随机接入资源区域位于的随机接入资源所在帧的帧号;
所述帧内位置信息用于指示在所述随机接入资源所在帧号所指示的帧中,所述同一个随机接入资源区域的位置;
所述帧内位置信息信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;或
所述帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;或
所述帧内位置信息包括:时域位置信息,所述同一个随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用所述时域位置
信息所指示的一个或多个时间单元;或
所述帧内位置信息包括:频域位置信息,所述同一个随机接入资源区域在频域上占用所述频域位置信息所指示的一个或多个频域单元,在时域上占用随机接入信道所占用的整个时间段;或
所述帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源。
该可选实现方式给出了区域信息的多种可能的实现方式。
结合上述任一方面的第七种可能的实现方式,在第八种可能的实现方式中,所述帧内位置信息包括一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源时,在所述网络设备发送所述随机接入控制消息之前,广播随机接入信道资源索引与随机接入信道资源的对应关系;或
随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定的。
这样终端设备可预先知道随机接入信道资源索引与随机接入信道资源的对应关系,即可根据网络设备发送的终端集合标识信息中的随机接入信道资源索引确定接收的随机接入控制信息中,是否包含对自身发起的随机接入过程的处理结果。
图1为M2M系统随机接入过程的流程图;
图2为M2M系统的一种示意性的网络结构图;
图3为本申请提供的无线通信系统的结构示意图;
图4为本申请中网络设备和终端设备交互的流程图;
图5为本申请示例一中,网络设备发送随机接入拒绝消息占用的PDCCH资源的示意图;
图6为本申请示例二中,随机接入响应消息分段指示的示意图;
图7为本申请示例二中,信元等待时间的示意图;
图8为本申请示例二中,区域信息的示意图;
图9为本申请示例三提供的随机接入过程的流程图;
图10为本申请提供的第一种网络设备的结构示意图;
图11为本申请提供的第二种网络设备的结构示意图;
图12为本申请提供的第一种终端设备的结构示意图;
图13为本申请提供的第二种终端设备的结构示意图;
图14为本申请提供的第一种随机接入方法的流程图;
图15为本申请提供的第二种随机接入方法的流程图。
为了更好地理解本申请的上述目的、方案和优势,下文提供了详细描述。该详细描述通过使用框图、流程图等附图和/或示例,阐明了装置和/或方法的各种实施方式。在这些框图、流程图和/或示例中,包含一个或多个功能和/或操作。本领域技术人员将理解到:这些框图、流程图或示例内的各个功能和/或操作,能够通过各种各样的硬件、软件、固件单独或共同实施,或者通过硬件、软件和固件的任意组合实施。
本申请中,网络设备针对M个终端设备集合中的N个终端设备发起的随机接入过程,发送同一条随机接入控制消息,该同一条随机接入控制消息用于指示网络设备针对该N个终端设备的同一处理结果,消息中包括终端集合标识信息,用于标识所述N个终端设备;终端设备在收到随机接入控制消息后,获取消息中的终端集合标识信息,并在该终端集合标识信息所标识的所述N个终端设备中包括自身时,根据收到的随机接入控制消息确定网络设备对终端设备发起的随机接入过程的处理结果,其中,M和N为正整数;
其中,网络设备使用同一条随机接入拒绝消息向M个终端设备集合中的N个终端设备指示随机接入过程的同一处理结果,可节省发送随机接入拒绝
消息所占用的控制信道资源,解决了随机接入过程中的控制信道受限的问题。
进一步地,针对同一个终端设备集合的上述同一条随机接入控制消息可放在下行控制信道的同一资源位置处发送,由于集合内的终端设备共用下行控制信道的同一资源位置,可以节省下行控制信道的资源占用;
或者,针对M个终端设备集合的上述同一条随机接入控制消息可放在下行控制信道的同一资源位置处发送,M个终端设备集合中的终端设备共用下行控制信道的同一资源位置,进一步节省下行控制信道的资源占用。
目前M2M系统中,随机接入响应消息和随机接入拒绝消息都是在UE专有的PDCCH资源上发送的。当UE在随机接入信道(Random Access CHannel,RACH)资源上向基站发送随机接入请求消息后,基站会根据当前网络的拥塞情况,向UE发送随机接入响应消息或者随机接入拒绝消息。短时间内大量UE的随机接入会导致网络设备在向这些大量UE发送随机接入响应消息或者随机接入拒绝消息时,PDCCH资源受限。
本申请提出的共用下行控制信道的资源位置方式的一种典型的应用场景如下所述:
M2M系统中,由于网络拥塞导致网络设备需要拒绝终端设备发起的随机接入过程,而在M2M系统中,由于网络拥塞引起的随机接入拒绝通常在一段时间内要拒绝大量终端设备而不仅仅是单个终端设备,因此采用上述共用下行控制信道的资源位置的方式,可降低下行控制信道的开销,节省出来的资源可用于终端设备数据传输调度等专有信息的发送,则可进一步提高数据传输效率。
当前,除了M2M系统的上述场景之外,在网络设备向大量终端设备发送随机接入响应消息时,也可能会出现PDCCH资源受限的问题。采用本申请同样可以解决该场景下的问题。
此外,除了M2M系统之外,对于其他存在随机接入过程的应用场景,也可以通过采用本申请,节省网络设备的下行控制信道资源。
下面,对本申请涉及的基本概念进行解释。需要说明的是,这些解释是
为了让本申请更容易被理解,而不应该视为对本申请所要求的保护范围的限定。
1、随机接入过程
目前无线通信系统中,随机接入过程存在基于竞争的方式和基于非竞争的方式。
在基于非竞争的随机接入中,基站会为终端设备分配对应的前导码(Preamble)和接入资源;在基于竞争的随机接入中,终端设备会随机选择接入资源(比如:对于LTE系统,该接入资源为RACH资源)进行前导码的发送,然后接收随机接入响应、发送消息3(Message3,MSG3),以及接收竞争冲突解决消息。
2、M2M通信
M2M通信是机器与机器之间通过无线网络互相传递信息和数据的通信,是移动通信下一步发展的重要方向。它广泛应用于多个领域,包括智能交通、楼控系统、家庭智能控制系统、视频监控系统、工业监测等。一种示意性的网络结构如图2所示。其中,冰箱、电表、汽车等均可作为M2M系统中的终端设备,通过基站、传输网络等与其他终端设备进行通信,比如:电表与汽车之间的通信等。
3、M2M系统中随机接入过程触发的可能原因可包括但不限于如下几项:
1)终端设备在初始接入过程中发起随机接入过程
比如:当从无线资源控制(Radio Resource Control,RRC)空闲态(RRC_IDLE)态到RRC连接态(RRC_CONNECTED)建立无线连接时,终端设备可发起随机接入过程;
2)在RRC连接重建过程(RRC Connection Re-establishment procedure)中终端设备发起随机接入过程;
3)在下行数据到达时触发随机接入过程
基站有下行数据需要发送给终端设备,且确定终端设备处于RRC连接态,但终端设备处于上行失步状态,则基站指示终端设备发起随机接入过程。
4)在上行数据到达时触发随机接入过程
终端设备处于RRC连接态,当终端设备有上行数据需要发送给基站,却发现自身处于上行失步状态,则终端设备发起随机接入过程。
4、随机接入控制消息
随机接入控制消息包括但不限于随机接入响应消息和随机接入拒绝消息,可指网络设备针对终端设备发送的随机接入请求消息的响应消息。
其中,随机接入响应消息用于指示响应终端设备发起的随机接入过程,即允许终端设备的随机接入请求;随机接入拒绝消息用于指示拒绝终端设备发起的随机接入过程。
5、终端设备集合
终端设备集合是由一个或多个终端设备组成的集合,通常一个终端设备集合中包括多个终端设备。本申请中,相同的终端设备集合中的终端设备具有如下特征中的至少一个:
1)属于相同的覆盖等级;
2)设备标识属于相同的设备标识集合;
3)属于相同的优先级集合。比如:业务优先级、调度优先级、寻呼优先级等
下面逐一说明上述特征:
1)覆盖等级
在一个小区覆盖范围内,通常存在多个终端设备,这多个终端设备距离基站的远近可能不同,所处的无线环境也可能不同,与小区天线之间的遮挡物也可能不同,这样会造成小区天线发射的同一信道到不同终端设备时,信号强度不同,造成对于不同的终端设备,信号接收强度不同,达到的覆盖效果不同。
依据不同的覆盖效果,比如:依据信道到达终端设备的衰减不同,可将上述多个终端设备分为多个覆盖等级,属于相同的覆盖等级的终端设备覆盖小区相近。
2)设备标识集合
比如:偶数的设备标识属于一个设备标识集合,奇数的设备标识属于另一个设备标识集合。
再比如:将设备标识进行模10运算,余1的属于设备标识集合1,余2的属于集合标识集合2,以此类推,余0的属于设备标识集合10。
划分设备标识集合的方法有很多,不限于上述举例。
3)优先级集合
比如:预先定义业务优先级,具有相同的或相近的业务优先级的终端设备属于一个优先级集合。
具体地,比如定义了10个业务优先级1~10,按照编号由小到大的顺序,优先级依次降低,则可定义优先级集合1包括优先级1~优先级4,优先级集合2包括优先级5~优先级7,优先级集合3包括优先级8~优先级10。
再比如:预先定义终端设备优先级,优先级高的终端设备获得网络资源的概率比优先级低的终端设备高。
具体地,比如:定义了4个终端设备优先级1~4,按照编号由小到大的顺序,优先级依次降低,则可定义优先级集合1包括优先级1、2,优先级集合2包括优先级3、4。
划分优先级集合的方法有很多,不限于上述举例。
6、下行控制信道
随机接入拒绝消息需要通过下行控制信道发送,该下行控制信道可包括:逻辑信道、传输信道和物理信道中的一种或多种。
比如:该下行控制信道可为物理信道。比如:该物理信道可为目前M2M系统中的PDCCH信道。
7、下行控制信道的资源位置
本申请中,网络设备在发送随机接入控制消息时,通过下行控制信道承载该随机接入控制消息。
其中,M个终端设备集合可对应下行控制信道的同一资源位置;或者
M个终端设备集合对应下行控制信道的不同资源位置,比如:M个终端设备集合对应该下行控制信道的M个不同资源位置。
8、系统和网络
术语“系统”和“网络”在本申请中常被可互换使用。本申请中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
以上介绍了本申请涉及的基本概念,下面,结合附图对本申请加以详细说明。
图3示出了本申请提供的无线通信系统的结构示意图。如图3所示,该无线通信系统包括:网络设备301和N个终端设备302,其中,N个终端设备302属于M个终端设备集合(图3中,以M=2为例,包括终端设备集合1和终端设备集合2),M和N为正整数,M不大于N。
图3所示的无线通信系统中,N个终端设备302,用于向网络设备302发送随机接入请求消息,发起随机接入过程;网络设备301确定N个终端设备302发起的随机接入过程的同一处理结果,并向N个终端设备302发送同一条随机接入控制消息,指示该同一处理结果。
需要说明的是,虽然仅示出了一个网络设备301,但在实际的无线应用场景中,可能存在多个网络设备301。
此外,还要进一步说明的是,M、N为正整数,表示可能存在如下多种情况:
网络设备301可针对一个终端设备集合中一个终端设备302发送随机接入控制消息;
网络设备301针对一个终端设备集合中的多个终端设备302发送同一条随机接入控制消息;
网络设备301针对多个终端设备集合中的多个终端设备302发送同一条随机接入控制消息。
无论是上述哪种情况,通过向一个终端设备集合中的各终端设备发送同一条随机接入控制消息,均可实现节省控制信道资源的目的。
图3所示的无线通信系统的通信制式包括但不限于:全球移动通信系统(Global System of Mobile communication,GSM)、码分多址(Code Division Multiple Access,CDMA)IS-95、码分多址(Code Division Multiple Access,CDMA)2000、时分同步码分多址(Time Division-Synchronous Code Division Multiple Access,TD-SCDMA)、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)、时分双工-长期演进(Time Division Duplexing-Long Term Evolution,TDD LTE)、频分双工-长期演进(Frequency Division Duplexing-Long Term Evolution,FDD LTE)、长期演进-增强(Long Term Evolution-Advanced,LTE-advanced)、个人手持电话系统(Personal Handy-phone System,PHS)、802.11系列协议规定的无线保真(Wireless Fidelity,WiFi)、全球微波互联接入(Worldwide Interoperability for Microwave Access,WiMAX),以及未来演进的各种无线通信系统。
其中,终端设备302可以是无线终端,无线终端可以是指向用户提供语音和/或数据连通性的设备,具有无线连接功能的手持式设备、或连接到无线调制解调器的其他处理设备。无线终端可以经无线接入网(例如,RAN,Radio Access Network)与一个或多个核心网进行通信,无线终端可以是移动终端,如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机,例如,可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置,它们与无线接入网交换语言和/或数据。例如,个人通信业务(PCS,Personal Communication Service)电话、无绳电话、会话发起协议(SIP)话机、无线本地环路(WLL,Wireless Local Loop)站、个人数字助理(PDA,Personal Digital Assistant)等设备。无线终端也可以称为订户单元(Subscriber Unit)、订户站(Subscriber Station),移动站(Mobile Station)、移动台(Mobile)、远程站(Remote Station)、接入点(Access Point)、远程终端(Remote Terminal)、接入终端(Access Terminal)、用户终端(User Terminal)、用户代理(User Agent)、用户设备(User
Device)、或用户设备(User Equipment)。
网络设备301可包括基站,或用于控制基站的无线资源管理设备,或包括基站和用于控制基站的无线资源管理设备;其中基站可为宏站或小站,比如:小小区(small cell)、微小区(pico cell)等,基站也可为家庭基站,比如:家庭节点B(Home NodeB,HNB)、家庭演进节点B(Home eNodeB,HeNB)等,基站也可包括中继节点(relay)等。
比如:对于TDD LTE、FDD LTE或LTE-A等LTE系统,本申请提供的无线通信系统中的网络设备101可为演进节点B(evolved NodeB,eNodeB),终端设备302可为UE;对于TD-SCDMA系统或WCDMA系统,本申请提供的无线通信系统中的网络设备301可包括:节点B(NodeB)和/或无线网络控制器(Radio Network Controller,RNC),终端设备302可为UE;对于GSM系统,本申请提供的中的网络设备101可包括基站收发台(Base Transceiver Station,BTS)和/或基站控制器(Base Station Controller,BSC),终端设备302为移动台(Mobile Station,MS);对于WiFi系统,网络设备301可包括:接入点(Access Point,AP)和/或接入控制器(Access Controller,AC),终端设备302可为站点(STAtion,STA)。
图4示出了网络设备301和终端设备302交互的流程图。如图4所示,该流程包括如下步骤:
S401:终端设备302向网络设备301发送随机接入请求消息,请求接入无线通信系统中;
可能存在多个终端设备302在一个时间段内向网络设备301发送随机接入请求消息;
S402:网络设备301在收到各个终端设备302发送的随机接入请求消息后,确定对各个终端设备302发起的随机接入过程的处理结果;
通常,各个终端设备302不会完全在同一时刻发起随机接入过程,因此,网络设备301可在收到一个终端设备302发送的随机接入请求消息后,即确定对该终端设备302的处理结果,而无需等到收到各个终端设备302发送的
随机接入请求消息后再确定各个终端设备302发起的随机接入过程的处理结果。
这里网络设备301确定了对M个终端设备集合中的N个终端设备302发起的随机接入过程的同一处理结果;
S403:网络设备301向这M个终端设备集合中的N个终端设备302发送同一条随机接入控制消息,消息中携带终端集合标识信息,用于标识该N个终端设备302;
网络设备301可在确定对一个终端设备302发起的随机接入过程的处理结果后,在一段时间内等待其他终端设备302发送的随机接入请求消息,并确定针对其他终端设备302发起的随机接入过程的处理结果,然后通过同一条随机接入控制消息指示对这些终端设备302发起的随机接入过程的同一处理结果。
S404:终端设备302收到随机接入控制消息后,从消息中获取终端集合标识信息,在终端集合标识信息所标识的终端设备中包括自身时,根据随机接入控制消息确定自身发起的随机接入过程的处理结果。
可选地,若终端集合标识信息所标识的终端设备不包括自身终端集合标识信息终端集合标识信息时,可忽略该随机接入控制消息,不进行进一步的处理。
其中步骤S402中,网络设备301可确定针对M个终端设备集合中的N个终端设备302的发起的随机接入过程的同一处理结果。
下面,按照M的不同取值分别说明步骤S403中网络设备301发送随机接入控制消息,终端设备302接收随机接入控制消息的方案。
1、M≥2
如前所述,M≥2表示网络设备301可针对多个终端设备集合中的多个终端设备302发送同一条随机接入控制消息。
按照随机接入控制消息占用的下行控制信道的资源位置,又可区分下列两种可能的情形:
情形一
该同一条随机接入控制消息在该M个终端设备集合对应的下行控制信道的同一资源位置发送,这样可极大节省下行控制信道的资源。
相应地,终端设备302可在上述M个终端设备集合对应的下行控制信道的同一资源位置处接收随机接入控制消息。
可选地,在网络设备301向所述N个终端设备302发送上述同一条随机接入控制消息之前,网络设备301广播信道资源位置信息,该信道资源位置信息用于指示该下行控制信道的同一资源位置。
相应地,终端设备302接收网络设备301广播的信道资源位置信息,根据该信道资源位置信息确定下行控制信道上发送随机接入控制消息的上述同一资源位置。
情形二
该同一条随机接入控制消息可分别在M个终端设备集合对应的下行控制信道的不同资源位置发送,比如:在M个终端设备集合对应的下行控制信道的M个不同资源位置发送。
可选地,在网络设备301向N个终端设备302发送上述同一条随机接入控制消息之前,网络设备301广播信道资源位置信息,该信道资源位置信息用于指示M个终端设备集合分别对应的下行控制信道上发送随机接入控制消息占用的资源位置。
相应地,终端设备302接收网络设备301广播的信道资源位置信息,根据该信道资源位置信息,以及自身所属的终端设备集合,确定下行控制信道上发送给自身所属的终端设备集合的随机接入控制消息所占用的资源。
情形二中,属于不同的终端设备集合中的终端设备302在下行控制信道的不同资源位置处接收随机接入控制消息,可以实现对不同终端设备集合的区别处理。
以具有不同覆盖等级的终端设备302属于不同的终端设备集合为例,由于不同覆盖等级下,终端设备302接收网络设备301发射的信号的接收能力
不同,采用情形二中的方案,可实现为不同覆盖等级的终端设备302分配不同的下行控制信道资源,比如:为覆盖较差的终端设备302分配抗干扰能力较高的下行控制信道的资源,比如:这些资源采用低阶调制方式,鲁棒的信道编码方式,比如:在这些信道上采用更多重复次数,以提高这些终端设备302的信号接收质量。
2、M=1
M=1表示网络设备301可针对一个终端设备集合中的一个或多个终端设备302发送同一条随机接入控制消息。
可选地,网络设备301在下行控制信道中,N个终端设备302所属的同一终端设备302集合对应的资源位置发送随机接入控制消息。
相应地,终端设备302在下行控制信道中自身所属的终端设备集合所对应的资源位置处接收随机接入控制消息。
可选地,在网络设备301向所述N个终端设备302发送同一条随机接入控制消息之前,网络设备301广播信道资源位置信息,该信道资源位置信息用于指示下行控制信道中同一终端设备集合对应的资源位置。
相应地,终端设备302接收网络设备301广播的信道资源位置信息,根据该信道资源位置信息确定自身所属的终端设备集合对应的资源位置。
其中,M=1可视为M≥2中情形二,即针对不同的终端设备集合,网络设备301在发送同一条随机接入控制消息时占用的下行控制信道的资源不同。
步骤S403中,网络设备301在不同的下行控制信道的资源位置发送随机接入控制消息的一个示例可参考后面的示例一。
步骤S403和步骤S404中,随机接入控制消息中的终端集合标识信息包括下列信息中的一种或多种:
1、类型信息
类型信息用于指示N个终端设备302所属的同一种终端设备类型;
通过该方式,网络设备301可通过同一条随机接入控制消息,通知属于同一种终端设备类型的多个终端设备302,对这多个终端设备302发起的随机
接入过程的处理结果。
通过与区域信息结合在一起,可针对随机接入资源所位于的同一个随机接入资源区域中,具有指定终端设备类型的多个终端设备302进行随机接入控制。
比如:在同一个随机接入资源区域中,可能发起随机接入的终端设备302有多种类型,比如:紧急上报的终端设备类型和非紧急上报的终端设备类型,在某些情形下,网络设备301可能仅需要拒绝终端设备类型为非紧急上报终端设备的终端设备302,则会通过该类型信息指示随机接入控制消息所针对的终端设备302的类型仅为非紧急上报终端设备。
该类型信息可包括一项或多项信息,比如:示例二中表2和表4中的信元(Information Element,IE)特殊UE指示(SpecialUE indication),可用于指示紧急上报的终端设备类型和非紧急上报的终端设备类型。再比如:表2和表4中的IE应用指示(application indicator),该IE可用于指示终端设备302所属的应用群组,4bit可指示16个应用群组。
2、区域信息
区域信息用于指示:N个终端设备302在发起的随机接入过程中使用的随机接入资源所位于的同一个随机接入资源区域。
通过该方式,网络设备301可通过同一条随机接入控制消息,通知位于同一个随机接入资源区域的多个终端设备302,对这多个终端设备302发起的随机接入过程的处理结果。
其中,区域信息可包括随机接入资源所在帧号和帧内位置信息;
随机接入资源所在帧号,用于指示上述同一个随机接入资源区域位于的随机接入资源所在帧的帧号,比如:示例二中表1~表4中的IE:PRACH帧。
帧内位置信息,用于指示在随机接入资源所在帧号所指示的帧中,上述同一个随机接入资源区域的位置,比如:示例二中表2和表4中的IE:PRACH位置指示(PRACH position indication)
其中,帧内位置信息的实现可采用下列方式中的一种:
方式一
帧内位置信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;
方式二
帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;
方式三
帧内位置信息包括:时域位置信息,同一个随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用时域位置信息所指示的一个或多个时间单元;
方式四
帧内位置信息包括:频域位置信息,同一个随机接入资源区域在频域上占用频域位置信息所指示的一个或多个频域单元,在时域上占用随机接入信道所占用的整个时间段;
方式五
帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备302发送随机接入请求消息所使用的随机接入信道的资源。
若采用帧内位置信息的实现方式五,则步骤S403之前,网络设备301网络设备301可广播随机接入信道资源索引与随机接入信道资源的对应关系;
或者,随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定的。
随机接入控制消息的一个示例可参考后面的示例三。
此外,也可以在同一条随机接入控制消息中指示对于不同的终端设备组的不同处理结果。这里不同的终端设备组中的每个组包括一个或多个终端设备,即前述的N个终端设备,但对于不同的组,N可以不同。一个具体的例子可参考后面的示例四。
【示例一】
示例一中,网络设备301发送的随机接入控制消息为随机接入拒绝消息,网络设备301发送随机接入拒绝消息占用的下行控制信道为PDCCH,不同终端设备集合中的终端设备属于不同的覆盖等级。
图5为示例一中,网络设备301发送随机接入拒绝消息占用的PDCCH资源的示意图。
如图5所示,网络设备301为每个覆盖等级配置公共的PDCCH资源,该公共的PDCCH资源可用于向对应的覆盖等级的终端设备302发送随机接入拒绝消息。
比如:网络设备301可将每个覆盖等级PDCCH资源块的一部分位置配置为该覆盖等级的公共的PDCCH资源,并在系统消息中指示配置的PDCCH资源。
比如:网络设备301可在系统消息(System Information,SI)中用一个偏移(offset)信元指示每个覆盖等级的PDCCH资源中的前面多少个时隙是该覆盖等级的公共PDCCH资源。
其中,系统消息在物理广播信道(Physical Broadcast CHannel,PBCH)上发送。图5中,CC(Coverage Class)表示覆盖等级,不同编号表示不同的覆盖等级。PDCCH资源中,CC1~CC4标记的资源分别是网络设备301配置的覆盖等级1~覆盖等级4的公共的PDCCH资源。
【示例二】
示例二中,以M2M系统为例,对随机接入响应消息举例说明。
目前M2M系统中,随机接入响应消息的格式可如表1所示。
表1 目前M2M系统中上行接入响应消息举例
本申请中,以M2M系统为例,随机接入响应消息的格式可如表2所示。
表2 本申请中公共信道的上行接入响应消息举例
如图6所示,本申请中,随机接入响应消息可采用分段指示的方法,首先通过公共的随机接入响应消息指示响应终端设备发起的随机接入过程,然后,通过终端设备专用的随机接入响应消息指示终端设备发送消息3(Message3,Msg3)可使用的上行资源等信息。比如:图6中,通过在公共的PDCCH资源上发送公共的随机接入响应消息,指示包括UE1、UE2和UE3在内的多个UE可以进行随机接入,再通过UE专用的PDCCH资源分别向UE1、UE2和UE3指示发送Msg3可使用的上行资源。若在公共PDCCH资源收到随机接入响应消息中的终端集合标识信息所指示的终端不包括自身时,则终端设备可不必再读取专用的随机接入响应消息,降低了终端设备的处理负荷。
这样设计的好处在于,若终端设备在根据公共的随机接入响应消息确定自身发起的随机接入过程被响应时,才读取后面的专用的随机接入响应消息,降低了终端设备的处理负荷。
目前M2M系统中,随机接入拒绝消息的格式可如表3所示。
表3、上行接入拒绝消息(Uplink access reject message)举例
其中,Message ID指示消息类型,说明是随机接入拒绝消息;
MS access Identity是指被拒绝接入的终端设备标识(UE ID);
物理随机接入信道(Physical Random Access CHannel,PRACH)帧,表示被拒绝的随机接入请求消息占用的RACH资源所在帧的帧号;
PRACH起始位置(PRACH start position)表示PRACH资源在PRACH
帧中的起始位置;
等待时间(Wait time)表示该终端设备至少要等待多长时间后才能发起随机接入。
本申请中,以M2M系统为例,随机接入拒绝消息的格式可如表4所示。
表4 本申请中上行接入拒绝消息举例
图7示出了表3和表4中的IE等待时间的含义。终端设备302向网络设备301发送随机接入请求消息,发起随机接入过程,网络设备301向终端设
备302发送随机接入拒绝消息,消息中携带IE等待时间。终端设备302收到该随机接入拒绝消息后,按照消息中的“等待时间”等待,在等待时间结束时,再次向网络设备301发送随机接入请求消息。图7中Ntrans_max指示终端设备302发送随机接入请求消息的次数。现在的最大发送随机接入请求的次数会在系统消息里指示。不需要在回应消息里指示。但是可以作为备选IE。
以帧内位置信息的实现方式五为例,帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备302发送随机接入请求消息所使用的随机接入信道的资源。
参考图8,随机接入请求1~随机接入请求10分别表示10个随机接入信道资源索引。假设图8示出的是一个帧中的随机接入资源(RACH资源),随机接入信道资源索引值可从左到右,从上到下依次增加。
比如:若网络设备301要拒绝PRACH帧中的随机接入信道资源索引为1和2的随机接入资源上的随机接入请求,则可在随机接入拒绝消息中设置PRACH位置指示包括随机接入请求1和随机接入请求2即可。
再比如:在帧内位置信息的实现方式五下,帧内位置信息包括两个IE:PRACH起始位置指示(PRACH start position indication)和持续个数(duration),若网络设备301要拒绝某段时频资源内发起的所有随机接入过程,则可设置该两个IE实现。比如:设置PRACH起始位置指示为“1”,表明被拒绝的随机接入过程所占用的随机接入资源的起始位置是该帧中的第一个索引所指示的随机接入资源,设置持续个数为“3”,表明拒绝从起始位置开始的连续3个随机接入资源上发起的随机接入过程。
若网络设备301要拒绝PRACH帧中一段时间内的所有终端设备302发起的随机接入过程,则可通过帧内位置信息的方式三实现,指示帧内的起始时隙号和终止时隙号,指示在该时间范围内的PRACH占用的整个带宽上的所有随机接入资源上发起的随机接入过程被拒绝。或者,仍采用方式三,预先定义时域位置索引与随机接入资源占用的时域位置的对应关系。如图8所示,可通过设置帧内位置信息包括时域位置索引1~3,则可指示该PRACH帧中,
该段时间内发起的所有随机接入过程。
若网络设备301要拒绝PRACH帧中一段频域资源内的所有终端设备302发起的随机接入过程,则可通过帧内位置信息的方式四实现,指示帧内的起始频域位置和终止频域位置,指示PRACH帧持续的整个时间段内在该频域范围内的所有随机接入资源上发起的随机接入过程被拒绝。或者,仍采用方式四,预先定义频域位置索引与随机接入资源占用的频域位置的对应关系。如图8所示,可通过设置帧内位置信息包括频域位置索引1和3,则可指示该PRACH帧持续的整个时间段内,这两个频域范围内的所有随机接入资源上发起的随机接入过程被拒绝。
若网络设备301要拒绝PRACH帧中的一段频域资源内的指定时间段内的所有终端设备302发起的随机接入资源,则可通过帧内位置信息的方式一或方式二来实现。以方式一为例,帧内位置信息可包括4个IE:PRACH频域起始位置指示、PRACH频域终止位置指示、PRACH时域起始位置指示和PRACH时域终止位置指示。
参考图8,若PRACH频域起始位置指示为“1”,PRACH频域终止位置指示为“2”、PRACH时域起始位置指示为“2”,PRACH时域终止位置指示为“4”,则表示拒绝图8中上面两行,右面三列的随机接入资源上发起的所有随机接入过程。
对比表1和表2,以及对比表3和表4可见,示例二中,将原来在终端设备专用的下行控制信道上发送的随机接入控制消息,改为在公共的下行控制信道发送,消息格式上删减了IE移动台接入标识,增加了IE特殊UE指示,结合PRACH位置指示,可以拒绝某一类UE在某一些随机接入资源上发起的随机接入过程。
通过对随机接入控制消息的改进,去掉了移动台接入标识,减小了消息长度,降低了信令开销。
【示例三】
示例三中,以随机接入拒绝消息为例,说明终端设备302和网络设备301
在随机接入过程中的处理流程。如图9所示,该流程包括如下步骤:
S900:网络设备301向各个终端设备302(这里包括终端设备302A~终端设备302D,还可包括其他终端设备302)发送系统消息,指示随机接入资源的位置,终端设备302读取基站发送的该系统消息,获得随机接入资源的位置;
其中,终端设备302A~终端设备302C属于覆盖等级1,终端设备302D属于覆盖等级合2;
S901:终端设备302A~终端设备302D分别选择随机接入资源发送随机接入请求消息;
S902:网络设备301收到各个终端设备302发送的随机接入请求消息后,根据系统拥塞情况,决定拒绝覆盖等级1中、在部分随机接入资源上、由非紧急上报的终端设备类型的终端设备302发起的随机接入过程;
S903:网络设备301在PDCCH上的覆盖等级1对应的资源上发送随机接入拒绝消息,并通过表4中的IE特殊UE指示,指示拒绝由非紧急终端设备类型的终端设备302发起的随机接入过程,以及通过表4中的IE PRACH位置指示,指示部分随机接入资源上发起的随机接入过程被拒绝。
终端设备302A~终端设备302C在PDCCH上的覆盖等级1对应的资源上接收网络设备301发送的随机接入拒绝消息;
S904:终端设备302B和终端设备302A根据终端集合标识信息,确定自身发起的随机接入过程被拒绝;
S905:由于终端设备302C具有紧急呼叫的终端设备类型,则终端集合标识信息中指示的随机接入资源不包括终端设备302C发送随机接入请求消息占用的随机接入资源,则忽略该随机接入拒绝消息。
被拒绝的终端设备302等待“等待时间”后再发起随机接入过程。
示例一中,网络设备301在公共的PDCCH上发送群组的随机接入拒绝消息,拒绝的是某一些随机接入资源上的的某些类型的终端设备302接入,批量拒绝节省了PDCCH资源。
【示例四】
假设在同一条随机接入控制消息中指示对于P个终端设备组的随机接入过程的处理结果,P为正整数。可存在P个指示信息,每个指示信息对应于一个终端设备组,该指示信息用于指示对应的终端设备组中的所有终端设备302发起的随机接入过程是被响应还是被拒绝,该指示信息包括1比特,该比特取值“0”表示对应的终端设备组中的所有终端设备302发起的随机接入过程被响应,取值“1”表示对应的终端设备组中的所有终端设备302发起的随机接入过程被拒绝。
进一步,可选地,该P个指示信息可组成位图(bitmap),该bitmap中的每一位对应于一个前述的随机接入资源区域,该bitmap中的P位对应于P个随机接入资源区域。bitmap中某一位置“0”,表明对应的随机接入资源区域上的随机接入过程都被响应,置“1”表明对应的随机接入资源区域上的随机接入过程都被拒绝。
图10为本申请提供的第一种网络设备的结构示意图。如图10所示,该网络设备包括:
处理模块1001,用于确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;
发送模块1002,用于向发起随机接入过程的N个终端设备发送同一条随机接入控制消息,随机接入控制消息用于指示处理模块1001确定的同一处理结果,消息中包括终端集合标识信息,终端集合标识信息用于标识N个终端设备。
可选地,发送模块1002具体用于:
当M≥2时,在M个终端设备集合所对应的下行控制信道的同一资源位置上发送随机接入控制消息。
可选地,发送模块1002还用于:
在向N个终端设备发送同一条随机接入控制消息之前,广播信道资源位置信息,信道资源位置信息用于指示同一资源位置。
可选地,发送模块1002具体用于:
当M=1时,在下行控制信道中、且在N个终端设备所属的同一终端设备集合所对应的同一资源位置上发送随机接入控制消息。
可选地,发送模块1002还用于:
在向N个终端设备发送同一条随机接入控制消息之前,广播信道资源位置信息,信道资源位置信息用于指示下行控制信道中同一终端设备集合所对应的同一资源位置。
可选地,每个终端设备集合中的全部终端设备具有如下特征中的至少一个:
属于相同的覆盖等级;
设备标识属于相同的设备标识集合;
属于相同的优先级集合。
可选地,终端集合标识信息包括下列信息中的一种或多种:
类型信息,类型信息用于指示N个终端设备所属的同一种终端设备类型;
区域信息,区域信息用于指示:N个终端设备在发起的随机接入过程中使用的随机接入资源所位于的同一个随机接入资源区域。
可选地,区域信息包括随机接入资源所在帧号和帧内位置信息;
随机接入资源所在帧号用于指示同一个随机接入资源区域位于的随机接入资源所在帧的帧号;
帧内位置信息用于指示在随机接入资源所在帧号所指示的帧中,同一个随机接入资源区域的位置;
帧内位置信息信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;或
帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;或
帧内位置信息包括:时域位置信息,同一个随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用时域位置信息所指示的
一个或多个时间单元;或
帧内位置信息包括:频域位置信息,同一个随机接入资源区域在频域上占用频域位置信息所指示的一个或多个频域单元,在时域上占用随机接入信道所占用的整个时间段;或
帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源。
可选地,发送模块1002还用于:在帧内位置信息包括一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源时,在网络设备发送随机接入控制消息之前,广播随机接入信道资源索引与随机接入信道资源的对应关系;或
随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定的。
图10所示的网络设备的具体实现可参考前述的网络设备301,其中处理模块1001用于执行网络设备301的处理操作,发送模块1002用于执行网络设备301的发送操作。
图10所示的网络设备的所在的无线通信系统的通信制式可如前述的图3所示的无线通信系统的通信制式,该网络设备的具体实现形式,比如:基站、无线资源管理设备等,也可如前述的网络设备301的各种实现形式。
图10所示的网络设备在与无线通信系统中的终端设备进行交互时的流程可参考前述的图4所示流程。
图10所示的网络设备发送随机接入控制消息时占用的下行控制信道的资源位置也可参考前述的资源位置的情形一、情形二。
图10所示的网络设备发送的终端集合标识信息的可选实现方式可参考前述的图4所示的流程中,步骤S403和步骤S404中关于终端集合标识信息的描述。
图10所示的网络设备中,处理模块1001可由处理器实现,发送模块1002可由发射器实现,发送模块1002发射的信号可通过一根或多根天线发射出去。
图10所示的网络设备发送消息的具体格式,占用的下行控制信道资源的具体实现方式,以及具体流程,可参考前面的示例一、示例二、示例三和示例四中的关于网络设备301的描述。
图10所示的网络设备可用于执行图14所示的第一种随机接入方法。
图11为本申请提供的第二种网络设备的结构示意图。如图11所示,该网络设备包括:
处理器1101,用于确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;
发射器1102,用于向发起随机接入过程的N个终端设备发送同一条随机接入控制消息,随机接入控制消息用于指示处理器1101确定的同一处理结果,消息中包括终端集合标识信息,终端集合标识信息用于标识N个终端设备。
处理器1101的各种可选实现方式可参考处理模块1001,发射器1102的各种可选实现方式可参考发送模块1002。
图11所示的网络设备的具体实现可参考前述的网络设备301,其中处理器1101用于执行网络设备301的处理操作,发射器1102用于执行网络设备301的发送操作。
图11所示的网络设备的所在的无线通信系统的通信制式可如前述的图3所示的无线通信系统的通信制式,该网络设备的具体实现形式,比如:基站、无线资源管理设备等,也可如前述的网络设备301的各种实现形式。
图11所示的网络设备在与无线通信系统中的终端设备进行交互时的流程可参考前述的图4所示流程。
图11所示的网络设备发送随机接入控制消息时占用的下行控制信道的资源位置也可参考前述的资源位置的情形一、情形二。
图11所示的网络设备发送的终端集合标识信息的可选实现方式可参考前述的图4所示的流程中,步骤S403和步骤S404中关于终端集合标识信息的
描述。
图11所示的网络设备发送消息的具体格式,占用的下行控制信道资源的具体实现方式,以及具体流程,可参考前面的示例一、示例二、示例三和示例四中的关于网络设备301的描述。
图11所示的网络设备可用于执行图14所示的第一种随机接入方法。
图12为本申请提供的第一种终端设备的结构示意图。如图12所示,该终端设备包括:
接收模块1201,用于接收网络设备响应于终端设备发起的随机接入过程而发送的随机接入控制消息;
处理模块1202,用于获取接收模块1201接收的随机接入控制消息中的终端集合标识信息,终端集合标识信息用于标识M个终端设备集合中的N个终端设备,M和N为正整数;以及在确定终端集合标识信息所包括自身的标识时,根据随机接入控制消息确定网络设备针对终端设备发起的随机接入过程的处理结果。
可选地,接收模块1201具体用于:
当M≥2时,在M个终端设备集合所对应的下行控制信道的同一资源位置上接收随机接入控制消息。
可选地,接收模块1201还用于:
在接收随机接入控制消息之前,接收网络设备广播的信道资源位置信息,信道资源位置信息用于指示同一资源位置。
可选地,接收模块1201具体用于:
当M=1时,在下行控制信道中自身所属的终端设备集合所对应的资源位置上接收随机接入控制消息。
可选地,接收模块1201还用于:
在终端设备接收随机接入控制消息之前,接收网络设备广播的信道资源位置信息,信道资源位置信息用于指示下行控制信道中终端设备所属的终端设备集合所对应的同一资源位置。
可选地,每个终端设备集合中的全部终端设备具有如下特征中的至少一个:
属于相同的覆盖等级;
设备标识属于相同的设备标识集合;
属于相同的优先级集合。
可选地,终端集合标识信息包括下列信息中的一种或多种:
类型信息,类型信息用于指示终端设备所属的终端设备类型;
区域信息,区域信息用于指示:终端设备在发起的随机接入过程中使用的随机接入资源所位于的随机接入资源区域。
可选地,区域信息包括随机接入资源所在帧号和帧内位置信息;
随机接入资源所在帧号用于指示同一个随机接入资源区域位于的随机接入资源所在帧的帧号;
帧内位置信息用于指示在随机接入资源所在帧号所指示的帧中,同一个随机接入资源区域的位置;
帧内位置信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;或
帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;或
帧内位置信息包括:时域位置信息,随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用时域位置信息所指示的一个或多个时间单元;或
帧内位置信息包括:频域位置信息,随机接入资源区域在频域上占用频域位置信息所指示的一个或多个频域单元,在时域上占用随机接入信道所占用的整个时间段;或
帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源。
可选地,接收模块1201还用于:在帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源时,在终端设备接收随机接入拒绝消息之前,接收网络设备广播的随机接入信道资源索引与随机接入信道资源的对应关系;或
随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定的。
图12所示的终端设备的具体实现可参考前述的终端设备302,其中处理模块1202用于执行终端设备302的处理操作,接收模块1201用于执行终端设备302的接收操作。
图12所示的终端设备的所在的无线通信系统的通信制式可如前述的图3所示的无线通信系统的通信制式,该终端设备的具体实现形式也可如前述的终端设备302的各种实现形式。
图12所示的终端设备在与无线通信系统中的网络设备进行交互时的流程可参考前述的图4所示流程。
图12所示的终端设备接收随机接入控制消息时使用的下行控制信道的资源位置也可参考前述的资源位置的情形一、情形二。
图12所示的终端设备接收的终端集合标识信息的可选实现方式可参考前述的图4所示的流程中,步骤S403和步骤S404中关于终端集合标识信息的描述。
图12所示的终端设备中,处理模块1202可由处理器实现,接收模块1201可由接收器实现,接收模块1201可通过一根或多根天线接收信号。
图12所示的终端设备接收消息的具体格式,接收的随机接入控制消息占用的下行控制信道资源的具体实现方式,以及具体流程,可参考前面的示例一、示例二、示例三和示例四中的关于终端设备302的描述。
图12所示的终端设备可用于执行图15所示的第二种随机接入方法。
图13为本申请提供的第二种终端设备的结构示意图。如图13所示,该
终端设备包括:
接收器1301,用于接收网络设备响应于终端设备发起的随机接入过程而发送的随机接入控制消息;
处理器1302,用于获取接收器1301接收的随机接入控制消息中的终端集合标识信息,终端集合标识信息用于标识M个终端设备集合中的N个终端设备,M和N为正整数;以及在确定终端集合标识信息所包括自身的标识时,根据随机接入控制消息确定网络设备针对终端设备发起的随机接入过程的处理结果。
图13所示的终端设备的具体实现可参考前述的终端设备302,其中处理器1302用于执行终端设备302的处理操作,接收器1301用于执行终端设备302的接收操作。
图13所示的终端设备的所在的无线通信系统的通信制式可如前述的图3所示的无线通信系统的通信制式,该终端设备的具体实现形式也可如前述的终端设备302的各种实现形式。
图13所示的终端设备在与无线通信系统中的网络设备进行交互时的流程可参考前述的图4所示流程。
图13所示的终端设备接收随机接入控制消息时使用的下行控制信道的资源位置也可参考前述的资源位置的情形一、情形二。
图13所示的终端设备接收的终端集合标识信息的可选实现方式可参考前述的图4所示的流程中,步骤S403和步骤S404中关于终端集合标识信息的描述。
图13所示的终端设备接收消息的具体格式,接收的随机接入控制消息占用的下行控制信道资源的具体实现方式,以及具体流程,可参考前面的示例一、示例二、示例三和示例四中的关于终端设备302的描述。
图13所示的终端设备可用于执行图15所示的第二种随机接入方法。
图14为本申请提供的第一种随机接入方法的流程图。如图14所示,该流程包括如下步骤:
S1401:网络设备确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;
S1402:网络设备向发起随机接入过程的N个终端设备发送同一条随机接入控制消息,随机接入控制消息用于指示同一处理结果,消息中包括终端集合标识信息,终端集合标识信息用于标识N个终端设备。
可选地,当M≥2时,网络设备向发起随机接入过程的N个终端设备发送同一条随机接入控制消息,包括:
网络设备在M个终端设备集合所对应的下行控制信道的同一资源位置上发送随机接入控制消息。
可选地,在网络设备向N个终端设备发送同一条随机接入控制消息之前,还包括:
网络设备广播信道资源位置信息,信道资源位置信息用于指示同一资源位置。
可选地,当M=1时,网络设备向N个终端设备发送同一条随机接入控制消息,包括:
网络设备在下行控制信道中、且在N个终端设备所属的同一终端设备集合所对应的资源位置上发送随机接入控制消息。
可选地,在网络设备向N个终端设备发送同一条随机接入控制消息之前,还包括:
网络设备广播信道资源位置信息,信道资源位置信息用于指示下行控制信道中同一终端设备集合所对应的同一资源位置。
可选地,每个终端设备集合中的全部终端设备具有如下特征中的至少一个:
属于相同的覆盖等级;
设备标识属于相同的设备标识集合;
属于相同的优先级集合。
可选地,终端集合标识信息包括下列信息中的一种或多种:
类型信息,类型信息用于指示N个终端设备所属的同一种终端设备类型;
区域信息,区域信息用于指示:N个终端设备在发起的随机接入过程中使用的随机接入资源所位于的同一个随机接入资源区域。
可选地,区域信息包括随机接入资源所在帧号和帧内位置信息;
随机接入资源所在帧号用于指示同一个随机接入资源区域位于的随机接入资源所在帧的帧号;
帧内位置信息用于指示在随机接入资源所在帧号所指示的帧中,同一个随机接入资源区域的位置;
帧内位置信息信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;或
帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;或
帧内位置信息包括:时域位置信息,同一个随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用时域位置信息所指示的一个或多个时间单元;或
帧内位置信息包括:频域位置信息,同一个随机接入资源区域在频域上占用频域位置信息所指示的一个或多个频域单元,在时域上占用随机接入信道所占用的整个时间段;或
帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源。
可选地,若帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源,则
在网络设备发送随机接入控制消息之前,还包括:网络设备广播随机接入信道资源索引与随机接入信道资源的对应关系;或
随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定
的。
图14所示的方法的具体实现可参考前述的网络设备301的处理。
图14所示的方法中,网络设备的所在的无线通信系统的通信制式可如前述的图3所示的无线通信系统的通信制式,该网络设备的具体实现形式,比如:基站、无线资源管理设备等,也可如前述的网络设备301的各种实现形式。
图14所示的方法中,网络设备在与无线通信系统中的终端设备进行交互时的流程可参考前述的图4所示流程。
图14所示的方法中,网络设备发送随机接入控制消息时占用的下行控制信道的资源位置也可参考前述的资源位置的情形一、情形二。
图14所示的方法中,终端集合标识信息的可选实现方式可参考前述的图4所示的流程中,步骤S403和步骤S404中关于终端集合标识信息的描述。
图14所示的方法中,网络设备发送消息的具体格式,占用的下行控制信道资源的具体实现方式,以及具体流程,可参考前面的示例一、示例二、示例三和示例四中的关于网络设备301的描述。
图15为本申请提供的第二种随机接入方法的流程图。如图15所示,该方法包括如下步骤:
S1501:终端设备接收网络设备响应于终端设备发起的随机接入过程而发送的随机接入控制消息;
S1502:终端设备获取随机接入控制消息中的终端集合标识信息,终端集合标识信息用于标识M个终端设备集合中的N个终端设备,M和N为正整数;
S1503:终端设备确定终端集合标识信息所包括自身的标识时,根据随机接入控制消息确定网络设备针对终端设备发起的随机接入过程的处理结果。
可选地,当M≥2时,终端设备接收随机接入控制消息,包括:
终端设备在M个终端设备集合所对应的下行控制信道的同一资源位置上接收随机接入控制消息。
可选地,在终端设备接收随机接入控制消息之前,还包括:
终端设备接收网络设备广播的信道资源位置信息,信道资源位置信息用于指示同一资源位置。
可选地,当M=1时,终端设备接收随机接入控制消息,包括:
终端设备在下行控制信道中自身所属的终端设备集合所对应的资源位置上接收随机接入控制消息。
可选地,在终端设备接收随机接入控制消息之前,还包括:
终端设备接收网络设备广播的信道资源位置信息,信道资源位置信息用于指示下行控制信道中终端设备所属的终端设备集合所对应的资源位置。
可选地,每个终端设备集合中的全部终端设备具有如下特征中的至少一个:
属于相同的覆盖等级;
设备标识属于相同的设备标识集合;
属于相同的优先级集合。
可选地,终端集合标识信息包括下列信息中的一种或多种:
类型信息,类型信息用于指示终端设备所属的终端设备类型;
区域信息,区域信息用于指示:终端设备在发起的随机接入过程中使用的随机接入资源所位于的随机接入资源区域。
可选地,区域信息包括随机接入资源所在帧号和帧内位置信息;
随机接入资源所在帧号用于指示同一个随机接入资源区域位于的随机接入资源所在帧的帧号;
帧内位置信息用于指示在随机接入资源所在帧号所指示的帧中,同一个随机接入资源区域的位置;
帧内位置信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;或
帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;或
帧内位置信息包括:时域位置信息,随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用时域位置信息所指示的一个或多个时间单元;或
帧内位置信息包括:频域位置信息,随机接入资源区域在频域上占用频域位置信息所指示的一个或多个频域单元,在时域上占用随机接入信道所占用的整个时间段;或
帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源。
可选地,若帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源,则
在终端设备接收随机接入拒绝消息之前,还包括:终端设备接收网络设备广播的随机接入信道资源索引与随机接入信道资源的对应关系;或
随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定的。
图15所示的方法的具体实现可参考前述的终端设备302的操作。
图15所示的方法中,终端设备所在无线通信系统的通信制式可如前述的图3所示的无线通信系统的通信制式,该终端设备的具体实现形式也可如前述的终端设备302的各种实现形式。
图15所示的方法中,终端设备在与无线通信系统中的网络设备进行交互时的流程可参考前述的图4所示流程。
图15所示的方法中,终端设备接收随机接入控制消息时使用的下行控制信道的资源位置也可参考前述的资源位置的情形一、情形二。
图15所示的方法中,终端设备接收的终端集合标识信息的可选实现方式可参考前述的图4所示的流程中,步骤S403和步骤S404中关于终端集合标识信息的描述。
图15所示的方法中,终端设备接收消息的具体格式,接收的随机接入控制消息占用的下行控制信道资源的具体实现方式,以及具体流程,可参考前面的示例一、示例二、示例三和示例四中的关于终端设备302的描述。
综上,本申请中,网络设备针对M个终端设备集合中的N个终端设备发起的随机接入过程,发送同一条随机接入控制消息,该同一条随机接入控制消息用于指示网络设备针对该N个终端设备的同一处理结果,消息中包括终端集合标识信息,用于标识所述N个终端设备;终端设备在收到随机接入控制消息后,获取消息中的终端集合标识信息,并在该终端集合标识信息所标识的所述N个终端设备中包括自身时,根据收到的随机接入控制消息确定网络设备对终端设备发起的随机接入过程的处理结果,其中,M和N为正整数;
其中,网络设备使用同一条随机接入拒绝消息向M个终端设备集合中的N个终端设备指示随机接入过程的同一处理结果,可节省发送随机接入拒绝消息所占用的控制信道资源,解决了随机接入过程中的控制信道受限的问题。
进一步地,针对同一个终端设备集合的上述同一条随机接入控制消息可放在下行控制信道的同一资源位置处发送,由于集合内的终端设备共用相同的下行控制信道资源位置,可以节省下行控制信道的资源占用;
或者,针对M个终端设备集合的上述同一条随机接入控制消息可放在下行控制信道的同一资源位置处发送,M个终端设备集合中的终端设备共用相同的下行控制信道资源位置,进一步节省下行控制信道的资源占用。
本领域内的技术人员应明白,本发明的实施例可提供为方法、系统、或计算机程序产品。因此,本发明可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且,本发明可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本发明是参照根据本发明实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程
和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器,使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中,使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品,该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上,使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理,从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
尽管已描述了本发明的优选实施例,但本领域内的技术人员一旦得知了基本创造性概念,则可对这些实施例做出另外的变更和修改。所以,所附权利要求意欲解释为包括优选实施例以及落入本发明范围的所有变更和修改。
显然,本领域的技术人员可以对本发明实施例进行各种改动和变型而不脱离本发明实施例的精神和范围。这样,倘若本发明实施例的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。
Claims (37)
- 一种网络设备,其特征在于,包括:处理模块,用于确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;发送模块,用于向发起随机接入过程的所述N个终端设备发送同一条随机接入控制消息,所述随机接入控制消息用于指示所述处理模块确定的所述同一处理结果,消息中包括终端集合标识信息,所述终端集合标识信息用于标识所述N个终端设备。
- 如权利要求1所述的网络设备,其特征在于,所述发送模块具体用于:当M≥2时,在所述M个终端设备集合所对应的下行控制信道的同一资源位置上发送所述随机接入控制消息。
- 如权利要求2所述的网络设备,其特征在于,所述发送模块还用于:在向所述N个终端设备发送同一条随机接入控制消息之前,广播信道资源位置信息,所述信道资源位置信息用于指示所述同一资源位置。
- 如权利要求1所述的网络设备,其特征在于,所述发送模块具体用于:当M=1时,在下行控制信道中、且在所述N个终端设备所属的同一终端设备集合所对应的资源位置上发送所述随机接入控制消息。
- 如权利要求4所述的网络设备,其特征在于,所述发送模块还用于:在向所述N个终端设备发送同一条随机接入控制消息之前,广播信道资源位置信息,所述信道资源位置信息用于指示所述下行控制信道中所述同一终端设备集合所对应的资源位置。
- 如权利要求1~5任一项所述的网络设备,其特征在于,每个终端设备集合中的全部终端设备具有如下特征中的至少一个:属于相同的覆盖等级;设备标识属于相同的设备标识集合;属于相同的优先级集合。
- 如权利要求1~6任一项所述的网络设备,其特征在于,所述终端集合标识信息包括下列信息中的一种或多种:类型信息,所述类型信息用于指示所述N个终端设备所属的同一种终端设备类型;区域信息,所述区域信息用于指示:所述N个终端设备在发起的所述随机接入过程中使用的随机接入资源所位于的同一个随机接入资源区域。
- 如权利要求7所述的网络设备,其特征在于,所述区域信息包括随机接入资源所在帧号和帧内位置信息;所述随机接入资源所在帧号用于指示所述同一个随机接入资源区域位于的随机接入资源所在帧的帧号;所述帧内位置信息用于指示在所述随机接入资源所在帧号所指示的帧中,所述同一个随机接入资源区域的位置;所述帧内位置信息信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;或所述帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;或所述帧内位置信息包括:时域位置信息,所述同一个随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用所述时域位置信息所指示的一个或多个时间单元;或所述帧内位置信息包括:频域位置信息,所述同一个随机接入资源区域在频域上占用所述频域位置信息所指示的一个或多个频域单元,在时域上占用随机接入信道所占用的整个时间段;或所述帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源。
- 如权利要求8所述的网络设备,其特征在于,所述发送模块还用于:在所述帧内位置信息包括一个或多个随机接入信 道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源时,在所述网络设备发送所述随机接入控制消息之前,广播随机接入信道资源索引与随机接入信道资源的对应关系;或随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定的。
- 一种终端设备,其特征在于,包括:接收模块,用于接收网络设备响应于所述终端设备发起的随机接入过程而发送的随机接入控制消息;处理模块,用于获取所述接收模块接收的所述随机接入控制消息中的终端集合标识信息,所述终端集合标识信息用于标识M个终端设备集合中的N个终端设备,M和N为正整数;以及在确定所述终端集合标识信息所包括自身的标识时,根据所述随机接入控制消息确定所述网络设备针对所述终端设备发起的随机接入过程的处理结果。
- 如权利要求10所述的终端设备,其特征在于,所述接收模块具体用于:当M≥2时,在所述M个终端设备集合所对应的下行控制信道的同一资源位置上接收所述随机接入控制消息。
- 如权利要求11所述的终端设备,其特征在于,所述接收模块还用于:在接收所述随机接入控制消息之前,接收所述网络设备广播的信道资源位置信息,所述信道资源位置信息用于指示所述同一资源位置。
- 如权利要求10所述的终端设备,其特征在于,所述接收模块具体用于:当M=1时,在下行控制信道中自身所属的终端设备集合所对应的资源位置上接收所述随机接入控制消息。
- 如权利要求13所述的终端设备,其特征在于,所述接收模块还用于:在所述终端设备接收所述随机接入控制消息之前,接收所述网络设备广 播的信道资源位置信息,所述信道资源位置信息用于指示所述下行控制信道中所述终端设备所属的终端设备集合所对应的资源位置。
- 如权利要求10~14任一项所述的终端设备,其特征在于,每个终端设备集合中的全部终端设备具有如下特征中的至少一个:属于相同的覆盖等级;设备标识属于相同的设备标识集合;属于相同的优先级集合。
- 如权利要求10~15任一项所述的终端设备,其特征在于,所述终端集合标识信息包括下列信息中的一种或多种:类型信息,所述类型信息用于指示所述终端设备所属的终端设备类型;区域信息,所述区域信息用于指示:所述终端设备在发起的所述随机接入过程中使用的随机接入资源所位于的随机接入资源区域。
- 如权利要求16所述的终端设备,其特征在于,所述区域信息包括随机接入资源所在帧号和帧内位置信息;所述随机接入资源所在帧号用于指示所述同一个随机接入资源区域位于的随机接入资源所在帧的帧号;所述帧内位置信息用于指示在所述随机接入资源所在帧号所指示的帧中,所述同一个随机接入资源区域的位置;所述帧内位置信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;或所述帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;或所述帧内位置信息包括:时域位置信息,所述随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用所述时域位置信息所指示的一个或多个时间单元;或所述帧内位置信息包括:频域位置信息,所述随机接入资源区域在频域上占用所述频域位置信息所指示的一个或多个频域单元,在时域上占用随机 接入信道所占用的整个时间段;或所述帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源。
- 如权利要求17所述的终端设备,其特征在于,所述接收模块还用于:在所述帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源时,在所述终端设备接收所述随机接入拒绝消息之前,接收所述网络设备广播的随机接入信道资源索引与随机接入信道资源的对应关系;或随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定的。
- 一种随机接入方法,其特征在于,包括:网络设备确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;所述网络设备向发起随机接入过程的所述N个终端设备发送同一条随机接入控制消息,所述随机接入控制消息用于指示所述同一处理结果,消息中包括终端集合标识信息,所述终端集合标识信息用于标识所述N个终端设备。
- 如权利要求19所述的方法,其特征在于,当M≥2时,所述网络设备向发起随机接入过程的所述N个终端设备发送同一条随机接入控制消息,包括:所述网络设备在所述M个终端设备集合所对应的下行控制信道的同一资源位置上发送所述随机接入控制消息。
- 如权利要求20所述的方法,其特征在于,在所述网络设备向所述N个终端设备发送同一条随机接入控制消息之前,还包括:所述网络设备广播信道资源位置信息,所述信道资源位置信息用于指示所述同一资源位置。
- 如权利要求19所述的方法,其特征在于,当M=1时,所述网络设备向所述N个终端设备发送同一条随机接入控制消息,包括:所述网络设备在下行控制信道中、且在所述N个终端设备所属的同一终端设备集合所对应的资源位置上发送所述随机接入控制消息。
- 如权利要求22所述的方法,其特征在于,在所述网络设备向所述N个终端设备发送同一条随机接入控制消息之前,还包括:所述网络设备广播信道资源位置信息,所述信道资源位置信息用于指示所述下行控制信道中所述同一终端设备集合所对应的资源位置。
- 如权利要求19~23任一项所述的方法,其特征在于,每个终端设备集合中的全部终端设备具有如下特征中的至少一个:属于相同的覆盖等级;设备标识属于相同的设备标识集合;属于相同的优先级集合。
- 如权利要求19~24任一项所述的方法,其特征在于,所述终端集合标识信息包括下列信息中的一种或多种:类型信息,所述类型信息用于指示所述N个终端设备所属的同一种终端设备类型;区域信息,所述区域信息用于指示:所述N个终端设备在发起的所述随机接入过程中使用的随机接入资源所位于的同一个随机接入资源区域。
- 如权利要求25所述的方法,其特征在于,所述区域信息包括随机接入资源所在帧号和帧内位置信息;所述随机接入资源所在帧号用于指示所述同一个随机接入资源区域位于的随机接入资源所在帧的帧号;所述帧内位置信息用于指示在所述随机接入资源所在帧号所指示的帧中,所述同一个随机接入资源区域的位置;所述帧内位置信息信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;或所述帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;或所述帧内位置信息包括:时域位置信息,所述同一个随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用所述时域位置信息所指示的一个或多个时间单元;或所述帧内位置信息包括:频域位置信息,所述同一个随机接入资源区域在频域上占用所述频域位置信息所指示的一个或多个频域单元,在时域上占用随机接入信道所占用的整个时间段;或所述帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源。
- 如权利要求26所述的方法,其特征在于,若所述帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源,则在所述网络设备发送所述随机接入控制消息之前,还包括:所述网络设备广播随机接入信道资源索引与随机接入信道资源的对应关系;或随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定的。
- 一种随机接入方法,其特征在于,包括:终端设备接收网络设备响应于所述终端设备发起的随机接入过程而发送的随机接入控制消息;所述终端设备获取所述随机接入控制消息中的终端集合标识信息,所述终端集合标识信息用于标识M个终端设备集合中的N个终端设备,M和N为正整数;所述终端设备确定所述终端集合标识信息所包括自身的标识时,根据所述随机接入控制消息确定所述网络设备针对所述终端设备发起的随机接入过程的处理结果。
- 如权利要求28所述的方法,其特征在于,当M≥2时,所述终端设备接收所述随机接入控制消息,包括:所述终端设备在所述M个终端设备集合所对应的下行控制信道的同一资源位置上接收所述随机接入控制消息。
- 如权利要求29所述的方法,其特征在于,在所述终端设备接收所述随机接入控制消息之前,还包括:所述终端设备接收所述网络设备广播的信道资源位置信息,所述信道资源位置信息用于指示所述同一资源位置。
- 如权利要求28所述的方法,其特征在于,当M=1时,所述终端设备接收所述随机接入控制消息,包括:所述终端设备在下行控制信道中自身所属的终端设备集合所对应的资源位置上接收所述随机接入控制消息。
- 如权利要求31所述的方法,其特征在于,在所述终端设备接收所述随机接入控制消息之前,还包括:所述终端设备接收所述网络设备广播的信道资源位置信息,所述信道资源位置信息用于指示所述下行控制信道中所述终端设备所属的终端设备集合所对应的资源位置。
- 如权利要求28~32任一项所述的方法,其特征在于,每个终端设备集合中的全部终端设备具有如下特征中的至少一个:属于相同的覆盖等级;设备标识属于相同的设备标识集合;属于相同的优先级集合。
- 如权利要求28~33任一项所述的方法,其特征在于,所述终端集合标识信息包括下列信息中的一种或多种:类型信息,所述类型信息用于指示所述终端设备所属的终端设备类型;区域信息,所述区域信息用于指示:所述终端设备在发起的所述随机接入过程中使用的随机接入资源所位于的随机接入资源区域。
- 如权利要求34所述的方法,其特征在于,所述区域信息包括随机接入资源所在帧号和帧内位置信息;所述随机接入资源所在帧号用于指示所述同一个随机接入资源区域位于的随机接入资源所在帧的帧号;所述帧内位置信息用于指示在所述随机接入资源所在帧号所指示的帧中,所述同一个随机接入资源区域的位置;所述帧内位置信息包括:频域起始位置信息、频域终止位置信息、时域起始位置信息和时域终止位置信息;或所述帧内位置信息包括:频域起始位置信息、频域带宽、时域起始位置信息和时域持续时长;或所述帧内位置信息包括:时域位置信息,所述随机接入资源区域在频域上占用随机接入信道所占用的整个带宽,在时域上占用所述时域位置信息所指示的一个或多个时间单元;或所述帧内位置信息包括:频域位置信息,所述随机接入资源区域在频域上占用所述频域位置信息所指示的一个或多个频域单元,在时域上占用随机接入信道所占用的整个时间段;或所述帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源。
- 如权利要求35所述的方法,其特征在于,若所述帧内位置信息包括:一个或多个随机接入信道资源索引,每一个随机接入信道资源索引用于指示一个终端设备发送随机接入请求消息所使用的随机接入信道的资源,则在所述终端设备接收所述随机接入拒绝消息之前,还包括:所述终端设备接收所述网络设备广播的随机接入信道资源索引与随机接入信道资源的对应关系;或随机接入信道资源索引与随机接入信道资源的对应关系是协议预先规定的。
- 一种无线通信系统,其特征在于,包括:网络设备,用于确定对M个终端设备集合中的N个终端设备所发起的随机接入过程的同一处理结果,M和N为正整数;并向发起随机接入过程的所述N个终端设备发送同一条随机接入控制消息,所述随机接入控制消息用于指示所述同一处理结果,消息中包括终端集合标识信息,所述终端集合标识信息用于标识所述N个终端设备;终端设备,用于接收网络设备响应于所述终端设备发起的随机接入过程而发送的随机接入控制消息,获取所述随机接入控制消息中的终端集合标识信息,并在确定所述终端集合标识信息所包括自身的标识时,根据所述随机接入控制消息确定所述网络设备针对所述终端设备发起的随机接入过程的处理结果。
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CN104780549A (zh) * | 2014-01-10 | 2015-07-15 | 夏普株式会社 | 物理信道配置方法以及基站和用户设备 |
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US20180255575A1 (en) | 2018-09-06 |
CN108353432A (zh) | 2018-07-31 |
EP3364706A1 (en) | 2018-08-22 |
US10602541B2 (en) | 2020-03-24 |
CN108353432B (zh) | 2020-12-22 |
EP3364706A4 (en) | 2018-10-17 |
EP3364706B1 (en) | 2021-01-06 |
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