WO2017000256A1 - 一种定位方法及对应装置 - Google Patents

一种定位方法及对应装置 Download PDF

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Publication number
WO2017000256A1
WO2017000256A1 PCT/CN2015/082941 CN2015082941W WO2017000256A1 WO 2017000256 A1 WO2017000256 A1 WO 2017000256A1 CN 2015082941 W CN2015082941 W CN 2015082941W WO 2017000256 A1 WO2017000256 A1 WO 2017000256A1
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WO
WIPO (PCT)
Prior art keywords
group
location information
resource
positioning
location
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PCT/CN2015/082941
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English (en)
French (fr)
Inventor
尹长川
武霄泳
罗涛
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华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2015/082941 priority Critical patent/WO2017000256A1/zh
Priority to CN201580081398.9A priority patent/CN107710793B/zh
Publication of WO2017000256A1 publication Critical patent/WO2017000256A1/zh

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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
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a positioning method and a corresponding device.
  • Machine-to-Machine Communications is a networked application and service centered on machine intelligence interaction. It embeds wireless or wired communication modules and application modules inside the machine. Realize data communication without manual intervention to meet the information needs of users in monitoring, command and dispatch, data acquisition and measurement.
  • a large number of terminals are involved in the machine communication system, and many M2M services need to obtain the location information of the terminal.
  • the headquarters needs to know the location information of each group member, so as to facilitate timely understanding of the traffic situation.
  • the server creates a location policy resource for each located terminal, and the location policy stores the location parameter of the located terminal.
  • the server The location policy resource of the terminal determines its location information provider, and sends a location request to the location information provider to obtain location information of the located terminal.
  • the foregoing positioning mode consumes a large amount of air interface transmission resources, and the air interface resource utilization rate is low.
  • the embodiment of the invention provides a positioning method and a corresponding device, which are used to solve the problem that the utilization of the air interface resource is low when positioning multiple terminals in the prior art.
  • an embodiment of the present invention provides a positioning method, including:
  • the server When the server locates the group, the server provides a multicast location request to the location information provider of each group member of the group according to the pre-stored multicast address of the group, where the positioning multicast address includes Address information of a location information provider of each group member of the group, the location request is used to request to obtain location information of a group member of the group;
  • the server receives the location information returned by the location information provider of each group member of the group.
  • the method further includes:
  • the server mixes the received location information of each member of the group to generate group location information
  • the server returns the group location information generated by the hybridization to the positioning requesting end.
  • the server according to the pre-stored location multicast address of the group, Before the location information provider multicast location request of each group member of the group, the method further includes:
  • Determining, by the server, whether the network that sends the location request to the location information provider of each group member of the group supports multicast, and performing the positioning according to the pre-stored group when the network supports multicast The step of multicasting a multicast location request to a location information provider of each group member of the group.
  • the server according to the pre-stored positioning multicast address of the group, Before the location information provider multicast location request of each group member of the group, the method further includes:
  • the server creates a group resource according to information of a group member
  • the server creates a group positioning policy resource according to the group resource and the group positioning parameter, where the group positioning policy resource includes a positioning multicast address of the group resource corresponding group, and the group positioning
  • the parameters include any one of a positioning update period, a location information source, and a group location information storage location;
  • the server multicasts the positioning request according to the positioning multicast address included in the group positioning policy resource.
  • the method before the server creates the group resource according to the information of the group member, the method further includes:
  • the server creates a positioning parameter resource for the located terminal, where the positioning parameter resource includes information of a storage space in the server for storing location information of the located terminal;
  • the server creates a group resource according to the information of the group member, including:
  • the server creates the group resource according to the identifier of the location parameter resource of the at least two located terminals, where the at least two located terminals are group members of the group corresponding to the group resource.
  • the group positioning policy resource further includes: an identifier of a group location information memory resource, where Determining, by the server, the group location information storage resource according to the identifier of the group location information storage resource included in the group location policy resource, and using the group location information storage resource to group each group of the group The member's location information is mixed.
  • an embodiment of the present invention provides a positioning apparatus, including:
  • a multicast module configured to: when a group is located, a multicast location request to a location information provider of each group member of the group according to the pre-stored multicast address of the group, the positioning multicast The address includes location information of a location information provider of each group member of the group, and the location request is used to request to obtain location information of a group member of the group;
  • a receiving module configured to receive the location information returned by the location information provider of each group member of the group.
  • the device further includes:
  • a mixing module configured to mix the received location information of each member of the group to generate group location information
  • the result returning module is configured to return the group location information generated by the hybridization to the positioning requesting end.
  • the apparatus further includes:
  • a determining module configured to determine whether a network that sends a positioning request to a location information provider of each group member of the group supports multicast
  • the multicast module is configured to: when the determining module determines that the network supports multicast, multicast the location to a location information provider of each group member of the group according to the positioning multicast address request.
  • the device further includes:
  • a positioning resource creation module configured to create a group resource according to the information of the group member; and create a group positioning policy resource according to the group resource and the group positioning parameter, where the group positioning policy resource includes the group
  • the group resource corresponds to a positioning multicast address of the group, and the group positioning parameter includes any one of a positioning update period, a location information source, and a group location information storage location;
  • the multicast module multicasts the positioning request according to the positioning multicast address included in the group positioning policy resource.
  • the positioning resource creation module is configured to: create a positioning parameter resource for the located terminal, where the positioning parameter resource is And including information of a storage space in the device for storing location information of the located terminal; and creating the group resource according to an identifier of a positioning parameter resource of at least two located terminals, where the at least two are The positioning terminal is a group member of a group corresponding to the group resource.
  • the positioning resource creation module is configured to: create a group location information memory resource for the group, where The group location information storage resource is used for resources for performing aggregating processing on location information of each group member of the group;
  • the group positioning policy resource includes an identifier of a group location information memory resource, and the device locates the group location information memory resource according to the group positioning policy resource, and uses the group location information
  • the memory resource performs a hybrid processing on the location information of each group member of the group.
  • an embodiment of the present invention provides a server, including:
  • a transceiver configured to send a location request to a location information provider, and receive the location information Location information returned by the provider;
  • a storage unit for storing instructions
  • the processor is respectively connected to the transceiver and the storage unit, and is configured to execute the instruction stored by the storage unit to perform an operation of: indicating that the transceiver is pre-stored when positioning a group
  • the location multicast address of the group is a multicast location request to a location information provider of each group member of the group, and the location multicast address includes an address of a location information provider of each group member of the group Information, the location request is used to request location information of a group member of the group; and the location information that the transceiver receives the location information provider of each group member of the group.
  • the transceiver is further configured to perform data transmission with the positioning requesting end;
  • the processor is further configured to: mix the received location information of each member of the group to generate group location information, and instruct the transceiver to return the generated result of the hybridization to the positioning requesting end. Group location information.
  • the processor is configured to: indicate that the transceiver is according to the pre-stored group Before the location multicast address of the group is sent to the location information provider of the group, the group is also used to: determine the network that sends the location request to the location information provider of each group member of the group. Whether to support multicast, and when the network supports multicast, instructing the transceiver to send a multicast location request to a location information provider of each group member of the group according to the pre-stored multicast address of the group; .
  • the processor is further configured to: create a group resource according to the information of the group member; And generating a group positioning policy resource according to the group resource and the group positioning parameter, where the group positioning policy resource includes a positioning multicast address of the group corresponding to the group resource, where the group positioning parameter includes Any one of a positioning update period, a location information source, and a group location information storage location;
  • the transceiver is further configured to: multicast the positioning request according to the positioning multicast address in the group positioning policy resource.
  • the processor is further configured to: before being configured according to the group member information The positioning terminal creates a positioning parameter resource, where the positioning parameter resource includes information for storing a storage space of the location information of the located terminal;
  • the processor is configured to: create a group resource according to information of a group member, specifically:
  • the processor creates the group resource according to the identifier of the location parameter resource of the at least two located terminals, where the at least two located terminals are group members of the group corresponding to the group resource.
  • the processor is further configured to: create a group location information memory resource for the group, a group location information storage resource for a resource for performing aggregating processing on location information of each group member of the group; and locating the group location information memory resource according to the group positioning policy resource, and using the The group location information storage resource performs a hybrid processing on location information of each group member of the group.
  • the server sends a location request to the location information provider of the group member in a multicast manner, and receives location information returned by the location information provider of each group member to implement positioning of the group. Because the multicast request is used to send the location request, compared with the scheme of sending the location request one by one in the prior art, not only the information transmission amount in the transmission link is reduced, but also the utilization of the air interface transmission resource is improved, and The transmission time is reduced, the transmission rate is increased, the delay is reduced, and the positioning time is reduced.
  • FIG. 1 is a schematic diagram of a communication system according to an embodiment of the present invention.
  • FIG. 2 is a schematic structural diagram of a positioning strategy resource in the background art
  • FIG. 3 is a schematic flowchart of a positioning method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a further refinement process of a positioning method according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of creating a positioning related resource by a server according to an embodiment of the present invention
  • FIG. 6 is a schematic structural diagram of a group resource according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a group positioning policy resource according to an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of positioning parameter resources in an embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a process flow of returning location information by a server according to an embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a communication system in an application example of the present invention.
  • FIG. 11 is a schematic structural diagram of an apparatus 200 according to an embodiment of the present invention.
  • FIG. 12 is a schematic structural diagram of a server 300 according to an embodiment of the present invention.
  • the positioning requesting end may initiate a request to the server to obtain location information of the located terminal, and the server responds to the request of the positioning requesting end, locates the positioned terminal, and returns the positioning result to the positioning requesting end.
  • the location requesting end of the location request may be a mobile communication device, such as a smart phone, a tablet computer, a laptop computer, a desktop computer, etc.; the server may be a computer or a cluster of multiple computers;
  • the positioning terminal may be various vehicles, such as a car, a ship, etc., or may be a terminal device having a positioning module, such as a smart bracelet, a smart watch, a smart phone, and the like. When the user wears the terminal device with the positioning module, the location of the user can be determined by the location information of the terminal device.
  • the server creates the positioning policy resource shown in Figure 2 for each located terminal.
  • the Location Policy resource includes the following attributes: Location Source, Location Update Period, Location Target Id, Location Server, Location Container ID. , location result memory resource name (Location Container Name), location status (Location Status), and so on.
  • the server determines the location information provider of the terminal according to the Location Policy resource of each terminal, and sends a location request to the location information provider of each terminal one by one to receive the location of each located terminal.
  • the location information returned by the information provider to achieve positioning consumes a large amount of transmission resources and causes channel congestion.
  • the embodiment of the present invention provides a positioning method and a corresponding device.
  • the technical solutions of the present invention are described in detail below through the accompanying drawings and specific embodiments. It should be understood that the specific features of the embodiments and embodiments of the present invention are The detailed description of the technical solutions of the present invention, and not the limitations of the technical solutions of the present invention, may be combined with each other in the embodiments of the present invention and the technical features in the embodiments without conflict.
  • an embodiment of the present invention provides a positioning method.
  • FIG. 3 it is a schematic flowchart of the positioning method. The process includes the following steps:
  • Step 101 When the server locates the group, the server locates the multicast location request according to the location multicast address of the pre-stored group to the group information provider of the group, and the positioning multicast address includes each group member of the group. Location information provider's address information, the location request is used to request location information of a group member of the group.
  • each group member of the group is a located terminal, and the location information provider may have the following implementation manners:
  • the member's location information provider is the group member itself, that is, the group member can determine its own location information through its own positioning module, and return its own location information to the server.
  • the location information provider of the group member is the location server in the underlying network.
  • the communication carrier provides a positioning function
  • the positioning server of the communication carrier stores the location information of the group member
  • the server may send a positioning request to the positioning server in the underlying network, thereby obtaining the location information of the group member.
  • the positioning servers of the underlying network are usually deployed based on locations. Therefore, the location servers corresponding to group members in different regions are different.
  • the location information provider of the group member is a shared device. Specifically, the shared device stores the location information of the group member, and shares the location information of the group member. When the server locates the group member, the server may The sharing device sends a request to obtain location information of a group member shared by the shared device.
  • Multicast refers to the sender transmitting information to a set of destination addresses (ie, multicast addresses). The information is transmitted only once on each network link, only when the link is forked. Will be copied.
  • the server pre-stores the group as the location multicast address, and the location multicast address includes the address information of the location information provider of each group member of the group, so the server can locate the multicast according to the location.
  • the address to the group member location information provider multicast location request of the group not only enables the location information provider of each group member to receive the location request, but also avoids having multiple copies of the location request in the same transmission chain. The resulting information is redundant, which in turn saves transmission resources.
  • the triggering condition for the server to locate the group includes: First, the server receives the positioning request for positioning the group sent by the positioning requesting end, and the server responds to the request to trigger the group positioning process. Second, a timer is set on the server. When the timer expires, the group positioning of the group is triggered. In actual situations, when the timer expires, the timer returns to zero, and the next timing period is entered to implement the cycle. Sexual group targeting.
  • Step 102 The server receives the location information returned by the location information provider of each group member of the group.
  • the location information provider of each group member of the group receives the location of the server multicast. After the request, in response to the positioning request, the location information of the located group member is returned to the server, and the server receives the location information returned by the location information provider of the group member.
  • the server sends a location request to the location information provider of the group member in a multicast manner, and receives the location information returned by the location information provider of each group member to implement positioning of the group. Because the multicast request is used to send the location request, compared with the scheme of sending the location request one by one in the prior art, not only the information transmission amount in the transmission link is reduced, but also the utilization of the air interface transmission resource is improved, and The transmission time is reduced, the transmission rate is increased, the delay is reduced, and the positioning time is reduced.
  • the method further includes the following steps:
  • Step 103 The server mixes the location information of each member of the received group to generate group location information.
  • Step 104 The server returns the group location information generated by the hybridization to the positioning requesting end.
  • the mashup refers to merging different information into a new information.
  • the server performs the aggregation processing on the location information of each member of the received group to obtain an item.
  • New information the new information contains the location information of each group member in the group, and the new information is the group location information.
  • the case where the server returns the group location information to the location requesting end includes: first, the location requesting end initiates a request for acquiring the group location information to the server; second, the server periodically updates the members of each group of the group. The location information, and after updating the group location information successfully, returns the updated group location information to the location requesting end.
  • the server mixes the location information of each group member of the group into a group location information, and returns the group location information obtained by the aggregation to the positioning request end, which is compared with the server orientation in the prior art.
  • the foregoing technical solution of the embodiment of the present invention can effectively reduce the occupation of the transmission resource when the server returns the positioning result to the positioning requesting end, and improve the utilization efficiency of the transmission resource, in a manner that the requesting end returns the location information of the group members of the group one by one.
  • the location information of the entire group is saved in one piece of information (ie, group location information), it is convenient for the server and the location requesting end to perform data processing and data management.
  • the method further includes the step 105: the server determines whether the network that sends the location request to the location information provider of each group member of the group supports multicast, if If the network supports multicast, go to step 101.
  • the network where the location information provider of each group member of the group is located may not support multicast.
  • the server cannot send the location request to the location of each group member through multicast.
  • the information provider therefore, the server first determines whether the network where the location information provider of each group member of the group supports the multicast according to the location multicast address of the group. If multicast is supported, step 101 is performed;
  • the execution may have the following two operations: first, a unicast positioning request to a location information provider of each group member; and second, a location information provider multicast positioning request for a group member supporting multicast. And for the location information provider that does not support multicast unicast positioning request.
  • the method further includes the step 106: the server determines that the group includes at least two members.
  • the server determines whether the number of group members of the group reaches two. If the group includes at least two members, step 101 is performed, and the multicast positioning request is performed; if the group includes only one group Members can send positioning requests in unicast mode.
  • the sequence between the two is not limited, that is, the step 105 may be performed first, and the step 106 may be performed when determining to support the multicast; or the step may be performed first. 106. After determining that the group includes two group members, perform step 105.
  • the server after performing the step 104, after receiving the request of the requester to obtain the location information of the group, the server first authenticates the requester, and after the authentication succeeds, returns to the requester. Gather the group location information to ensure the security of the information.
  • the server directly receives the location information returned by the location information provider of the group member in the group, and the location information of the remaining group member fails to be obtained.
  • the requesting end requests the location information of the group from the server, and the server may mix the obtained location information of the group member into the group location information, and simultaneously obtain the group obtained by the aggregation.
  • the location information also includes information about the group member that failed to locate, and the server returns the group location information to the location requesting end.
  • the server may directly return an error identifier to the location requesting end, indicating that the server does not currently obtain the group. Location information for all group members.
  • the positioning parameters of the group are implemented in the form of attributes of resources, which are physical entities (such as sensors, positioning devices) and application objects in the machine communication system (for example, programs for controlling the positioning process,
  • the program for processing the positioning results) can be described by the resource structure, is independently addressable, can be searched and found, and has a unique identifier, usually using a universal resource identifier (English: Uniform Resource Identifier ; Abbreviation: URI) as a resource identifier.
  • the resource includes attribute information, and may also include a sub-resource.
  • the positioning parameter of the group is included in the attribute information of the related resource in the server or the attribute information of the sub-resource.
  • the positioning requesting end needs to create a positioning-related resource on the server before the positioning, and save the positioning parameter of the group in the positioning-related resource.
  • the following steps are further included:
  • Step 107 The server creates a group resource according to the information of the group member.
  • the group member information may be sent to the server for the group creation end, or may be input by the creator directly on the server.
  • the group creation end and the positioning request end may be the same or different.
  • the administrator of the transportation company creates a fleet group through the office computer, and the office computer is the group creation end, and the administrator A assigns management. If Party B obtains the authority of the fleet location information, administrator B can request the location information of the fleet from the server through the handheld terminal. At this time, the handheld terminal of administrator B is the location requesting end.
  • the group creation end sends a request for creating a group resource to the server, where the request carries information of a group member, such as an identifier of a group member.
  • the server responds to the request, creates a group resource, and associates the located terminals included in the group creation end sending request into a group.
  • a schematic diagram of a resource structure of a group resource includes: a group name (Group Name); a group creation end (Creator); a group member identifier (Member) IDs), by adding the identifier of the located terminal to the Member ID of the Group resource, the located resource can be added to the group to make the group member of the member group.
  • the group resource may also include other attributes and sub-resources according to different requirements, which are not detailed herein.
  • Step 108 The server creates a group positioning policy resource according to the group resource and the group positioning parameter, where the group positioning policy resource includes a positioning multicast address of the group corresponding to the group resource identifier, and the group positioning parameter includes a positioning update period and positioning information. Any one of the source and group location information storage locations; wherein the server multicasts the location request according to the located multicast address included in the group location policy resource.
  • the user sends a request to the server to create a group location policy resource (hereinafter referred to as a GLP resource), where the request carries a specific group positioning parameter and a group resource that performs the positioning policy, and the server performs step 108.
  • a GLP resource a group location policy resource (hereinafter referred to as a GLP resource)
  • the request carries a specific group positioning parameter and a group resource that performs the positioning policy
  • the server performs step 108.
  • Create a GLP resource based on the information carried in the user request.
  • a schematic diagram of a resource structure of a GLP resource where the attribute information of the GLP resource includes: a group ID, which is an identifier of a group that associates the positioning policy resource, that is, a group corresponding to the group ID.
  • the location policy defined by the GLP resource is located;
  • the group location name is a name of a group that is associated with the location policy resource; and
  • the group address is a group address corresponding to the group ID. Locate the multicast address.
  • the attribute information of the GLP resource may further include the following: a location update period, where the server is instructed to locate the group according to the set period, and update the location information of the group; (Group Location Status), status information for whether the group is successfully located.
  • multiple groups may be associated in one GLP resource, that is, group positioning defined by GLP resources is used for any one of multiple groups associated with the GLP.
  • the strategy is positioned.
  • the attribute information of the GLP resource may further include: a location source, where the source of the location information of the group is defined, and the specific source includes a location server of the underlying network (such as a location server provided by the communication carrier). , positioned terminal itself, and location sharing letter Source of interest.
  • the Location Source attribute can be used to define the location information source of each group member of the group as the same type, which facilitates the use of multicast to obtain the location information of each group member.
  • the method further includes:
  • Step 109 The server creates a positioning parameter resource for the located terminal, where the positioning parameter resource includes information of a storage space in the server for storing location information of the located terminal.
  • the group creation end requests the server to create a location parameter resource for each of the located terminals.
  • the following content in the embodiment of the present invention is simply referred to as an LPa resource.
  • the server creates a Location Container resource for each located terminal, and the Location Container defines a storage location of the location information of the located terminal that is acquired by the server in the storage unit on the server side.
  • the storage unit for storing the location information of the located terminal may be deployed in the casing of the server, or may be deployed outside the casing of the server, and is regarded as a storage unit of the server in the embodiment of the present invention.
  • a schematic diagram of a resource structure of an LPa resource where the attribute information of the LPa resource includes: a location result memory resource identifier (Location Container ID), which is an identifier of a Location Container resource that stores location information of the located terminal;
  • a Location Container Name is a name of a Location Container resource that stores location information of the located terminal.
  • the LPa resource further includes the following attributes: a location server (Location Server), which is information of a location server that provides location information of the located terminal, and a location target identifier (Location Target Id) that is located for searching in the location server.
  • the location information of the terminal; the location status is the status of whether the location of the located terminal is successful.
  • the location information of the located terminal may not be provided by the positioning server in the underlying network.
  • the LPa resource may not include the Location Target ID and the Location Server, or the values of the two attributes are null. .
  • the network can not support multicast, or the multicast location request fails, according to Location Server, Location.
  • the information stored in the Target ID is unicast to the location data provider of the located terminal to ensure that the positioning result can be obtained.
  • the server when the step 107 is performed, creates a group resource according to the identifier of the positioning parameter resource of the at least two located terminals, and the at least two positioned terminals are group members of the group corresponding to the group resource. .
  • the location terminal can be added to the group by adding the identifier of the positioning parameter resource of the located terminal to the Number IDs attribute of the group resource.
  • the group positioning policy resource created in step 108 further includes: a group location information storage resource identifier (Group Container ID), and the group location information storage resource is created by the server for the group.
  • the server locates the group location information storage resource according to the identifier of the group location information storage resource included in the group location policy resource, and uses the group location information storage resource to perform the aggregation processing on the location information of each group member of the group. .
  • the server performs step 103, the location information of each group member is mixed by the group location information storage resource to generate group location information.
  • the attributes of the GLP resource further include: a data return policy (Method), where the data is processed when the server fails to obtain location information of all group members.
  • the specific processing manner includes: first, returning an error state, informing the requester that the location information of all group members is not currently obtained; second, mixing the location information of the obtained group members into group location information, and group location The information is returned to the location requester and the location requester is informed of the information of the failed group member.
  • FIG. 9 a schematic flowchart of a manner in which a server processes received location information according to Method information in a GLP, the process includes the following steps:
  • Step 110 The server receives location information of a group member returned by the location information provider.
  • Step 111 The server checks the value of the group positioning status in the GLP resource of the group; if the group positioning status is in the positioning success status, step 112 is performed; otherwise, step 113 is performed.
  • Step 112 Mix the location information of each group member into group location information, and return the group location information obtained by the aggregation to the location requesting end.
  • Step 113 Acquire the content of the data return policy attribute in the GLP resource, and return the data in the policy.
  • step 114 is performed; when the data return policy is the second content, step 115 is performed.
  • Step 114 Mix the location information of the group members that have been successfully located into the group location information, return the group location information to the location requesting end, and locate the information of the failed group member.
  • Step 115 Return a message indicating that the group positioning failed to the positioning requesting end.
  • the first content of the data returning policy indicates that the server still mixes the location information of the successfully located group member when the location information of the group member fails to be obtained, and returns the result of the hybridization to the positioning requesting end.
  • the second content of the Method indicates that the server directly returns an error message to the location requesting end when the location information of the group member fails to be obtained.
  • the group creator when the server separately creates the LPa resource, the group resource, and the GLP resource, the group creator returns a notification that the resource creation is successful, to notify the group creator that the resource creation is successful, so that the resource creation can be entered. A phase of operation.
  • the server may locate the group according to the LPa resource, the Group resource, and the GLP resource, and locate the group.
  • the result is mixed into group location information, and the group location information is returned to the location requesting end.
  • the scenario of the application example is a kindergarten safety monitoring system in a machine communication network, wherein a terminal device used by a kindergarten teacher or a garden party is a positioning requesting end; a positioning device worn by a kindergarten child is a positioned terminal, It is expressed as "child#i", which means the positioning device of the child numbered i, which provides the location information to indicate the child's location; the computer in the kindergarten's computer room is the server, and the machine communication network can be realized based on the wireless communication network. , such as wireless protection Wireless Fidelity network.
  • the teacher sends a request to the server through the smart phone to create an LPa resource for the 20 children in the class.
  • the LPa resource corresponding to each child includes the information of the location information provider, and the memory resource in the server that stores the location data of the child. Information, as well as the child's positioning status (positioning success, or positioning failure).
  • the server When receiving the request for creating the LPa resource, the server first authenticates the requester, and if the authentication succeeds, creates an LPa resource for each child according to the information carried in the request.
  • the teacher asks the server to create a Group resource, and the request carries the identifier of the LPa resource of 20 children in the class.
  • the server creates a Group resource in response to the request, and adds the identifier of the LPa resource carried in the request to the Member IDs attribute of the group resource, so as to associate the children in the teacher class into a group.
  • the teacher requests the server to create a GLP resource, and the request carries the identifier of the group resource associated with the GLP resource, and specific positioning policy parameters (such as a positioning update period, a multicast address, etc.).
  • the server responds to the request, creates the GLP resource, and defines a positioning policy for the group.
  • the server may return a message that the resource creation success is successful to the smart phone used by the teacher, and provide a multicast multicast location request to each child's location device according to the created LPa resource, the Group resource, and the GLP resource.
  • the server receives the location information returned by the corresponding location information provider of each of the 20 children, and uses the sub-resource Group Container resource of the GLP resource to mix the 20 pieces of location information into the class member location information, and mixes the obtained class members.
  • the location information is returned to the teacher who initiated the location request.
  • the server may periodically update the class member location information by using the LPa resource, the group resource, and the GLP resource, and periodically time the location information.
  • the teacher can also send the class member location information query request at any time to obtain the location information of 20 children.
  • the teacher only needs to send a query request to the server, and the server only needs to return a class member location information to the teacher, so that the teacher can know the location of 20 children. information.
  • the teacher needs to send the positioning request to the server one by one, and the server returns the positioning result one by one.
  • the solution provided by the embodiment of the present invention can greatly save the transmission resource between the server and the positioning requesting end.
  • the server sends a positioning request to the location information provider of 20 children by means of multicast, and in the prior art, the server needs to unicast the positioning request one by one to the location information providers of the 20 children.
  • the solution provided by the embodiment of the present invention can greatly save transmission resources between the server and the location information provider, improve network efficiency, and reduce positioning time.
  • an embodiment of the present invention provides a positioning apparatus 200 in a second aspect.
  • the apparatus 200 includes:
  • the multicast module 201 is configured to: when the group is located, perform a multicast location request according to the location multicast address of the pre-stored group to the group information provider of the group members, and locate the multicast address including the group. Address information of the location information provider of each group member, and the location request is used to request location information of the group members of the group;
  • the receiving module 202 is configured to receive location information returned by the location information provider of each group member of the group.
  • the apparatus 200 further includes:
  • the aggregation module 203 is configured to mix the location information of each member of the received group to generate group location information.
  • the result returning module 204 is configured to return the group location information generated by the hybridization to the positioning requesting end.
  • the apparatus 200 further includes:
  • the determining module 205 is configured to determine whether the network that sends the positioning request to the location information provider of each group member of the group supports multicast;
  • the multicast module 201 is configured to: when the determining module 205 determines that the network supports multicast, according to the location multicast address, the location information provider multicast location request is sent to each group member of the group.
  • the apparatus 200 further includes:
  • a positioning resource creating module 206 configured to create a group resource according to information of a group member; and a root A group positioning policy resource is created according to the group resource and the group positioning parameter, where the group positioning policy resource includes a positioning multicast address of the group resource corresponding group, and the group positioning parameter includes a positioning update period, a positioning information source, and a group location. Any of the information storage locations;
  • the multicast module 201 multicasts the location request according to the located multicast address included in the group positioning policy resource.
  • the positioning resource creating module 206 is configured to: create a positioning parameter resource for the located terminal, where the positioning parameter resource includes information about a storage space of the device for storing location information of the located terminal;
  • the identifier of the positioning parameter resource of the at least two locating terminals creates a group resource, and the at least two locating terminals are group members of the group corresponding to the group resource.
  • the location resource creation module 206 is configured to: create a group location information storage resource for the group, where the group location information storage resource is used to mix the location information of each group member of the group. Processed resources;
  • the group positioning policy resource includes an identifier of the group location information memory resource
  • the device locates the group location information memory resource according to the group positioning policy resource, and uses the group location information memory resource to locate the location information of each group member of the group. Perform a coagulation process.
  • the positioning method provided by the positioning device 200 and the first aspect in this embodiment is based on two aspects under the same inventive concept.
  • the implementation process of the positioning method has been described in detail above, so those skilled in the art can refer to the foregoing description.
  • the structure and implementation process of the positioning device 200 are clearly understood, and the details of the description will not be repeated here.
  • the embodiment of the present invention provides a server 300 in a third aspect.
  • the server 300 includes a processor 301, a storage unit 302, and a transceiver 303, wherein the processor 301 and the storage unit 302 are respectively The transceiver 303 is connected.
  • the transceiver 303 is configured to send a location request to the location information provider, and receive the location information returned by the location information provider.
  • the storage unit 302 is used to store instructions.
  • the processor 301 is configured to execute the instruction stored by the storage unit 302 to perform an operation of: instructing the transceiver 303 to locate the location information of each group member of the group according to the pre-stored group's located multicast address when the group is located.
  • Provider multicast positioning request the positioning multicast address contains the components of the group
  • the location information provider's address information the location request is used to request location information of the group members of the group; and the location information returned by the location information provider instructing the transceiver 303 to receive the group members of the group.
  • the server 300 further includes a bus 304.
  • the processor 301 is specifically connected to the storage unit 302 and the transceiver 303 via the bus 304.
  • the transceiver 303 is further configured to perform data transmission with the positioning requesting end;
  • the processor 301 is further configured to: mix the location information of each member of the received group to generate group location information, and instruct the transceiver 303 to return the group location information generated by the aggregation to the location requesting end.
  • the processor 301 is configured to: instruct the transceiver 303 to send a location multicast request to the location information provider of each group member of the group according to the pre-stored multicast multicast address of the group.
  • the method is used to: determine whether the network that sends the location request to the location information provider of each group member of the group supports multicast, and when the network supports multicast, instruct the transceiver 303 to use the pre-stored group to locate the multicast address to the group.
  • the location information provider multicast location request of each group member of the group is configured to: instruct the transceiver 303 to send a location multicast request to the location information provider of each group member of the group according to the pre-stored multicast multicast address of the group.
  • the processor 301 is further configured to: create a group resource according to the information of the group member; and create a group positioning policy resource according to the group resource and the group positioning parameter, and the group positioning policy resource The positioning multicast address of the group corresponding to the group resource, where the group positioning parameter includes any one of a positioning update period, a location information source, and a group location information storage location;
  • the transceiver 303 is configured to: multicast a positioning request according to the positioning multicast address in the group positioning policy resource.
  • the processor 301 is further configured to: create a positioning parameter resource for the located terminal, where the positioning parameter resource is used to store the located terminal. Information about the storage space of the location information;
  • the processor 301 is configured to: create a group resource according to information of a group member, specifically:
  • the processor 301 creates a group resource according to the identifier of the positioning parameter resource of the at least two located terminals, and the at least two located terminals are group members of the group corresponding to the group resource.
  • the processor 301 is further configured to: create a group location information storage resource for the group, where the group location information storage resource is used to perform a hybrid processing on the location information of each group member of the group. And locating the group location information storage resource according to the group location policy resource, and using the group location information storage resource to perform the aggregation processing on the location information of each group member of the group.
  • the storage unit 302 is a random access memory, and after the server 300 enters a normal running state, the application and the operating system are run in the random access memory.
  • the server 300 further includes: a read-only memory.
  • a read-only memory When the server 300 needs to be run, the system is booted by the basic input/output system that is solidified in the read-only memory, and the server 300 is booted into a normal running state.
  • the positioning method provided by the positioning server 300 and the first aspect in this embodiment is based on two aspects of the same inventive concept.
  • the implementation process of the positioning method has been described in detail above, so those skilled in the art can refer to the foregoing description.
  • the structure and implementation process of the location server 300 are clearly understood. For the sake of brevity of the description, details are not described herein again.
  • the embodiment of the present invention provides another positioning method in a fourth aspect, the method comprising the following steps:
  • the positioning requesting end sends a request for obtaining the group location information to the server;
  • the location requesting end receives the group location information returned by the server, where the group location information is a location multicast provider location location request of the group members of the group according to the pre-stored group location multicast address, and receives the group.
  • the location information returned by the location information provider of each group member of the group is generated by mixing the location information of each member of the received group.
  • the positioning requesting end only needs to send a group positioning request to the server, and receives a group location information returned by the server, so that the location information of each group member in the entire group can be obtained, compared to the existing location information.
  • the technology needs to send a positioning request to the server one by one, and receive the location information of each of the located terminals that the server pays attention to, which can effectively reduce the transmission resource occupation when the server returns the positioning result to the positioning requesting end, and improve the utilization efficiency of the transmission resource.
  • the positioning requesting end may further send the positioning parameter of the group member to the server, request the server to create the group resource, and send the group to the server.
  • the group positioning parameter is used to request the server to create a group positioning policy resource, so that the server locates the location information provider multicast multicast positioning request of the group member of the group according to the created group resource and the group positioning policy resource.
  • the positioning method provided by the fourth aspect in this embodiment and the positioning method provided by the first aspect are based on two aspects under the same inventive concept.
  • the implementation process of the positioning method provided by the first aspect has been described in detail above. Therefore, those skilled in the art can clearly understand the implementation process of the positioning method provided by the fourth aspect in this embodiment according to the foregoing description. For the sake of brevity of the description, no further description is provided herein.
  • an embodiment of the present invention provides a device for requesting positioning in a fifth aspect, where the device for requesting positioning includes:
  • a sending module configured to send, to the server, a request for acquiring group location information
  • a receiving module configured to receive group location information returned by the server, where the group location information is a location multicast provider location request of the group member of the group according to the pre-stored group location multicast address, and The location information returned by the location information provider of each group member of the group is received, and the location information of each member of the received group is mixed and generated.
  • the apparatus for requesting positioning in the fifth aspect and the positioning method provided by the first aspect are based on two aspects of the same inventive concept.
  • the implementation process of the positioning method has been described in detail above, so the technology in the field
  • the structure and implementation process of the device for requesting positioning in the five aspects can be clearly understood by the personnel according to the foregoing description. For the sake of brevity of the description, no further description is provided herein.
  • an embodiment of the present invention provides a positioning requesting device, including:
  • a sending device configured to send a request for obtaining group location information to the server
  • a receiver configured to receive group location information returned by the server, where the group location information is a location information provider of each group member of the group according to the location multicast address of the pre-stored group by the server.
  • the multicast location request is received, and the location information returned by the location information provider of each group member of the group is received, and the location information of each member of the received group is mixed and generated.
  • the server sends a location request to the location information provider of the group member in a multicast manner, and receives the location information returned by the location information provider of each group member, and implements the group information. Positioning. Because the multicast request is used to send the location request, compared with the scheme of sending the location request one by one in the prior art, not only the information transmission amount in the transmission link is reduced, but also the utilization of the air interface transmission resource is improved, and The transmission time is reduced, the transmission rate is increased, the delay is reduced, and the positioning time is reduced.
  • 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.

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Abstract

本发明公开了一种定位方法及对应装置，用于解决现有技术中对多个终端进行定位时空口资源利用率较低的问题。所述方法包括：服务器在对群组进行定位时，根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求，所述定位组播地址包含所述群组的各组成员的位置信息提供方的地址信息，所述定位请求用于请求获取所述群组的组成员的位置信息；所述服务器接收所述群组的各组成员的位置信息提供方返回的所述位置信息。

Description

一种定位方法及对应装置 技术领域
本发明涉及通信技术领域，特别涉及一种定位方法及对应装置。
背景技术
机器通信(英文：Machine-to-Machine Communications；简称:M2M)是一种以机器智能交互为核心的、网络化的应用与服务，其通过在机器内部嵌入无线或有线通信模块以及应用程序模块，实现无需人工干预的数据通信，以满足用户对监控、指挥调度、数据采集和测量等方面的信息化需求。
机器通信系统中涉及大量的终端，而很多M2M业务需要获取终端的位置信息，例如对城市中分布于各区域的几组巡逻车辆，总部需要知道每组成员的位置信息，便于及时了解交通状况。
现有技术中，服务器为每个被定位终端创建一项定位策略资源(Location Policy)资源，Location Policy资源中保存有该被定位终端的定位参数，在对被定位终端进行定位时，服务器根据该终端的Location Policy资源确定其位置信息提供方，并向位置信息提供方发送定位请求，获得被定位终端的位置信息。
但是，当对多个终端进行定位时，上述定位方式会消耗大量的空口传输资源，空口资源利用率较低。
发明内容
本发明实施例提供一种定位方法及对应装置，用于解决现有技术中对多个终端进行定位时空口资源利用率较低的问题。
第一方面，本发明实施例提供一种定位方法，包括：
服务器在对群组进行定位时，根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求，所述定位组播地址包含 所述群组的各组成员的位置信息提供方的地址信息，所述定位请求用于请求获取所述群组的组成员的位置信息；
所述服务器接收所述群组的各组成员的位置信息提供方返回的所述位置信息。
结合第一方面，在第一方面的第一种可能的实现方式中，在所述服务器接收所述群组的各组成员的位置信息提供方返回的位置信息之后，还包括：
所述服务器将接收的所述群组的各成员的位置信息进行混聚，生成群组位置信息；
所述服务器向定位请求端返回混聚生成的所述群组位置信息。
结合第一方面或第一方面的第一种可能的实现方式，在第一方面的第二种可能的实现方式中，在所述服务器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求之前，还包括：
所述服务器判断向所述群组的各组成员的位置信息提供方发送定位请求的网络是否支持组播，并在所述网络支持组播时，执行所述根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求的步骤。
结合第一方面或第一方面的第一种可能的实现方式，在第一方面的第三种可能的实现方式中，在所述服务器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求之前，还包括：
所述服务器根据群组成员的信息创建群组资源；
所述服务器根据所述群组资源和群组定位参数创建群组定位策略资源，所述群组定位策略资源包括所述所述群组资源对应群组的定位组播地址，所述群组定位参数包括定位更新周期、定位信息来源、群组位置信息存储位置中的任意一项；
其中，所述服务器根据所述群组定位策略资源包含的所述定位组播地址组播所述定位请求。
结合第一方面的第三种可能的实现方式，在第一方面的第四种可能的实 现方式中，在所述服务器根据群组成员的信息创建群组资源之前，还包括：
所述服务器为被定位终端创建定位参数资源，所述定位参数资源包括所述服务器中用于存储所述被定位终端的位置信息的存储空间的信息；
所述服务器根据群组成员的信息创建群组资源，包括：
所述服务器根据至少两个被定位终端的定位参数资源的标识，创建所述群组资源，所述至少两个被定位终端为所述群组资源对应的群组的组成员。
结合第一方面的第三种可能的实现方式，在第一方面的第五种可能的实现方式中，所述群组定位策略资源还包括：群组位置信息存储器资源的标识，其中，所述服务器根据所述群组定位策略资源包含的所述群组位置信息存储器资源的标识，定位群组位置信息存储器资源，并利用所述所述群组位置信息存储器资源对所述群组的各组成员的位置信息进行混聚处理。
第二方面，本发明实施例提供一种定位装置，包括：
组播模块，用于在对群组进行定位时，根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求，所述定位组播地址包含所述群组的各组成员的位置信息提供方的地址信息，所述定位请求用于请求获取所述群组的组成员的位置信息；
接收模块，用于接收所述群组的各组成员的位置信息提供方返回的所述位置信息。
结合第二方面，在第二方面的第一种可能的实现方式中，所述装置还包括：
混聚模块，用于将接收的所述群组的各成员的位置信息进行混聚，生成群组位置信息；
结果返回模块，用于向定位请求端返回混聚生成的所述群组位置信息。
结合第二方面或第二方面的第一种可能的实现方式，在第二方面的第二种可能的实现方式中，所述装置还包括：
判断模块，用于判断向所述群组的各组成员的位置信息提供方发送定位请求的网络是否支持组播；
其中，所述组播模块用于：在所述判断模块确定所述网络支持组播时，根据所述定位组播地址向所述群组的各组成员的位置信息提供方组播所述定位请求。
结合第二方面或第二方面的第一种可能的实现方式，在第二方面的第三种可能的实现方式中，所述装置还包括：
定位资源创建模块，用于根据群组成员的信息创建群组资源；以及根据所述群组资源和群组定位参数创建群组定位策略资源，所述群组定位策略资源包括所述所述群组资源对应群组的定位组播地址，所述群组定位参数包括定位更新周期、定位信息来源、群组位置信息存储位置中的任意一项；
其中，所述组播模块根据所述群组定位策略资源包含的所述定位组播地址组播所述定位请求。
结合第二方面的第三种可能的实现方式，在第二方面的第四种可能的实现方式中，所述定位资源创建模块用于：为被定位终端创建定位参数资源，所述定位参数资源包括所述装置中用于存储所述被定位终端的位置信息的存储空间的信息；以及根据至少两个被定位终端的定位参数资源的标识，创建所述群组资源，所述至少两个被定位终端为所述群组资源对应的群组的组成员。
结合第二方面的第三种可能的实现方式，在第二方面的第五种可能的实现方式中，所述定位资源创建模块用于：为所述群组创建群组位置信息存储器资源，所述群组位置信息存储器资源用于对所述群组的各组成员的位置信息进行混聚处理的资源；
其中，所述群组定位策略资源包括群组位置信息存储器资源的标识，所述装置根据所述群组定位策略资源定位所述群组位置信息存储器资源，并利用所述所述群组位置信息存储器资源对所述群组的各组成员的位置信息进行混聚处理。
第三方面，本发明实施例提供一种服务器，包括：
收发器，用于向位置信息提供方发送定位请求，以及接收所述位置信息 提供方返回的位置信息；
存储单元，用于存储指令；
处理器，分别与所述收发器、所述存储单元相连，用于执行所述存储单元存储的所述指令，以执行如下操作：在对群组进行定位时，指示所述收发器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求，所述定位组播地址包含所述群组的各组成员的位置信息提供方的地址信息，所述定位请求用于请求获取所述群组的组成员的位置信息；以及指示所述收发器接收所述群组的各组成员的位置信息提供方返回的所述位置信息。
结合第三方面，在第三方面的第一种可能的实现方式中，所述收发器还用于与定位请求端进行数据传输；
所述处理器还用于：将接收的所述群组的各成员的位置信息进行混聚，生成群组位置信息；并指示所述收发器向所述定位请求端返回混聚生成的所述群组位置信息。
结合第三方面或第三方面的第一种可能的实现方式，在第三方面的第二种可能的实现方式中，所述处理器在用于：指示所述收发器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求之前，还用于：判断向所述群组的各组成员的位置信息提供方发送定位请求的网络是否支持组播，并在所述网络支持组播时，指示所述收发器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求。
结合第三方面或第三方面的第一种可能的实现方式，在第三方面的第三种可能的实现方式中，所述处理器还用于：根据群组成员的信息创建群组资源；并根据所述群组资源和群组定位参数创建群组定位策略资源，所述群组定位策略资源包括所述所述群组资源对应群组的定位组播地址，所述群组定位参数包括定位更新周期、定位信息来源、群组位置信息存储位置中的任意一项；
其中，所述收发器还用于：根据所述群组定位策略资源中的所述定位组播地址组播所述定位请求。
结合第三方面的第三种可能的实现方式，在第三方面的第四种可能的实现方式中，所述处理器在根据群组成员的信息创建群组资源之前，还用于：为被定位终端创建定位参数资源，所述定位参数资源包括用于存储所述被定位终端的位置信息的存储空间的信息；
所述处理器用于：根据群组成员的信息创建群组资源，具体为：
所述处理器根据至少两个被定位终端的定位参数资源的标识，创建所述群组资源，所述至少两个被定位终端为所述群组资源对应的群组的组成员。
结合第三方面的第三种可能的实现方式，在第三方面的第五种可能的实现方式中，所述处理器还用于：为所述群组创建群组位置信息存储器资源，所述群组位置信息存储器资源用于对所述群组的各组成员的位置信息进行混聚处理的资源；并根据所述群组定位策略资源定位所述群组位置信息存储器资源，并利用所述所述群组位置信息存储器资源对所述群组的各组成员的位置信息进行混聚处理。
本发明实施例中提供的一个或多个技术方案，至少具有如下技术效果或优点：
本发明实施例中，服务器以组播的方式向群组成员的位置信息提供方发送定位请求，并接收各群组成员的位置信息提供方返回的位置信息，实现对群组的定位。由于采用组播的方式发送定位请求，相较于现有技术中采用的逐一发送定位请求的方案，不仅减少了传输链路中的信息传输量，进而提高了空口传输资源的利用率，而且还因减轻了传输链路的拥塞，提高传输速率，减少时延，进而减少了定位耗时。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简要介绍，显而易见地，下面描述中的附图仅仅是本发 明的一些实施例，对于本领域的普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明实施例中通信系统的示意图；
图2为背景技术中定位策略资源的结构示意图；
图3为本发明实施例中一种定位方法的流程示意图；
图4为本发明实施例中定位方法的进一步细化流程的示意图；
图5为本发明实施例中服务器创建定位相关资源的流程图；
图6为本发明实施例中群组资源的结构示意图；
图7为本发明实施例中群组定位策略资源的结构示意图；
图8为本发明实施例中定位参数资源的结构示意图；
图9为本发明实施例中服务器对返回的位置信息的处理流程的示意图；
图10为本发明应用实例中通信系统的示意图；
图11为本发明实施例中装置200的结构示意图；
图12为本发明实施例中服务器300的结构示意图。
具体实施方式
为了便于理解本发明实施例提供的技术方案，先介绍本发明实施例所涉及的通信系统。
参照图1，定位请求端可以向服务器发起请求，获取被定位终端的位置信息，服务器响应定位请求端的请求，对被定位终端进行定位，并将定位结果返回给定位请求端。其中，发起定位请求的定位请求端可以是移动通信设备，如智能手机、平板电脑，也可以是笔记本电脑，台式机等；服务器可以是一台计算机，也可以是多台计算机组成的集群；被定位终端可以是各种交通工具、如汽车、轮船等，也可以是具有定位模块的终端设备，如智能手环、智能手表、智能手机，等等。当用户佩戴具有定位模块的终端设备时，通过终端设备的位置信息可以确定该用户的位置。
现有技术中，服务器为每个被定位终端创建图2所示的定位策略资源， Location Policy资源包括如下属性：定位信息来源(Location Source)、定位更新周期(Location Update Period)、定位目标标识(Location Target Id)、定位服务器(Location Server)、定位结果存储器资源标识(Location Container ID)、定位结果存储器资源名称(Location Container Name)、定位状态(Location Status)，等等。
在对多个终端进行定位时，服务器根据每个终端的Location Policy资源确定该终端的位置信息提供方，并逐一向每个终端的位置信息提供方发送定位请求，接收每个被定位终端的位置信息提供方返回的位置信息，实现定位。但是，上述定位方式，会消耗大量的传输资源，且会导致信道拥塞。
为了解决该问题，本发明实施例提供一种定位方法及对应装置，下面通过附图以及具体实施例对本发明技术方案做详细的说明，应当理解本发明实施例以及实施例中的具体特征是对本发明技术方案的详细的说明，而不是对本发明技术方案的限定，在不冲突的情况下，本发明实施例以及实施例中的技术特征可以相互组合。
本发明的说明书和权利要求书中术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
第一方面，本发明实施例提供一种定位方法，参照图3，为该定位方法的流程示意图，该流程包括如下步骤：
步骤101：服务器在对群组进行定位时，根据预存的群组的定位组播地址向群组的各组成员的位置信息提供方组播定位请求，定位组播地址包含群组的各组成员的位置信息提供方的地址信息，该定位请求用于请求获取群组的组成员的位置信息。
具体的，群组的每个组成员即为一被定位终端，其位置信息提供方可以有以下实施方式：
其一，成员的位置信息提供方为组成员自身，即组成员可以通过自身的定位模块确定自身的位置信息，并将自身的位置信息返回给服务器。
其二，组成员的位置信息提供方为底层网络中的定位服务器。例如，通信运营商提供有定位功能，通信运营商的定位服务器保存有群组成员的位置信息，服务器可以向底层网络中的定位服务器发送定位请求，进而获知群组成员的位置信息。实际情况中，底层网络的定位服务器通常是基于位置部署的，因此，通常位于不同区域的群组成员对应的定位服务器不同。
其三，组成员的位置信息提供方为共享设备，具体来讲，共享设备中保存有组成员的位置信息，并将组成员的位置信息进行共享，当服务器对组成员进行定位时，可以向该共享设备发送请求，请求获取该共享设备共享的组成员的位置信息。
组播(Multicast)指的是发送者把信息同时传递给一组目的地址(即，组播地址)，信息在每条网络链路上只需传递一次，只有在链路分叉的时候，信息才会被复制。
本发明实施例中，服务器中预存有该群组的定为定位组播地址，该定位组播地址包含群组的各组成员的位置信息提供方的地址信息，因此，服务器能够根据定位组播地址向群组的各组成员位置信息提供方组播定位请求，不仅可以使得每个组成员的位置信息提供方均接收到定位请求，还可以避免在同一传输链内存在定位请求的多个副本导致的信息冗余，进而节省传输资源。
另外，服务器对群组进行定位的触发条件包括：其一，服务器接收到定位请求端发送的对群组进行定位的定位请求，服务器响应该请求，触发群组定位流程。其二，服务器上设置有定时器，当定时器时间到达时，触发对群组的群组定位，实际情况中，定时器时间到达时，定时器归零，进入下一个计时周期，以实现周期性地群组定位。
步骤102：服务器接收群组的各组成员的位置信息提供方返回的位置信息。
具体的，群组的各组成员的位置信息提供方在接收到服务器组播的定位 请求后，响应该定位请求，向服务器返回被定位的群组成员的位置信息，服务器将接收到群组成员的位置信息提供方返回的位置信息。
上述技术方案中，服务器以组播的方式向群组成员的位置信息提供方发送定位请求，并接收各群组成员的位置信息提供方返回的位置信息，实现对群组的定位。由于采用组播的方式发送定位请求，相较于现有技术中采用的逐一发送定位请求的方案，不仅减少了传输链路中的信息传输量，进而提高了空口传输资源的利用率，而且还因减轻了传输链路的拥塞，提高传输速率，减少时延，进而减少了定位耗时。
可选的，本发明实施例中，在步骤102之后，参照图4，还包括如下步骤：
步骤103：服务器将接收的群组的各成员的位置信息进行混聚，生成群组位置信息；
步骤104：服务器向定位请求端返回混聚生成的群组位置信息。
具体的，混聚(mashup)指的是将不同的信息融合为一项新的信息，本发明实施例中，服务器将接收的群组的各成员的位置信息进行混聚处理，得到一项的新的信息，该新的信息中包含群组中每个组成员的位置信息，该新的信息即为群组位置信息。
本发明实施例中，服务器向定位请求端返回群组位置信息的情况包括：其一，定位请求端向服务器发起了获取群组位置信息的请求；其二，服务器定时更新群组各组成员的位置信息，并在更新群组位置信息成功后，将更新后的群组位置信息返回定位请求端。
上述技术方案中，服务器将群组的各组成员的位置信息混聚为一条群组位置信息，并向定位请求端返回混聚得到的群组位置信息，相较于现有技术中服务器向定位请求端逐一返回群组的各组成员的位置信息的方式，本发明实施例上述技术方案能够有效降低服务器向定位请求端返回定位结果时的传输资源占用，提高传输资源利用效率。不仅如此，由于将整个群组的位置信息保存在一项信息(即，群组位置信息)中，便于服务器以及定位请求端进行数据处理以及数据管理。
可选的，本发明实施例中，在步骤101之前，继续参照图4，还包括步骤105：服务器判断向群组的各组成员的位置信息提供方发送定位请求的网络是否支持组播，若该网络支持组播，则执行步骤101。
具体的，实际情况中，群组的各组成员的位置信息提供方所处的网络可能并不支持组播，这种情况下，服务器无法通过组播将定位请求发送至每个组成员的位置信息提供方，所以，服务器先要根据群组的定位组播地址确定群组的各组成员的位置信息提供方所处的网络是否支持组播，如果支持组播，则执行步骤101；如果不支持组播，则执行可以有如下两种操作：其一，向每个组成员的位置信息提供方单播定位请求；其二，对于支持组播的组成员的位置信息提供方组播定位请求，而对于不支持组播的位置信息提供方单播定位请求。通过在组播定位请求前确定网络支持组播，能够避免定位请求的发送失败，保证定位请求下发的可靠性。
可选的，本发明实施例中，在步骤101之前，继续参照图4，还包括步骤106：服务器确定群组包括至少两个成员。
具体的，在执行步骤101之前，服务器将判断群组的组成员的数量是否达到两个，如果群组包括至少两个成员，则执行步骤101，组播定位请求；如果群组只包含一个组成员，则采用单播的方式下发定位请求即可。
具体实施时，在定位流程中同时包括步骤105、步骤106时，不限定二者间的先后顺序，即可以是先执行步骤105，在确定支持组播时执行步骤106；也可以是先执行步骤106，在确定群组包括两个组成员之后，执行步骤105。
可选的，本发明实施例中，在执行步骤104时，服务器在接收到请求者获取群组的位置信息的请求后，先对请求者进行鉴权，鉴权成功后，再向请求者返回混聚得到的群组位置信息，以保证信息的安全。
可选的，本发明实施例中，如果执行步骤102时，服务器直接收到群组中的部分组成员的位置信息提供方返回的位置信息，而余下组成员的位置信息获取失败，当有定位请求端向服务器请求群组的位置信息，则服务器可以将已获取的组成员的位置信息混聚为群组位置信息，同时，混聚得到的群组 位置信息中还包含有定位失败的组成员的信息，服务器向定位请求端返回该群组位置信息。
另外，如果服务器未能获取群组的所有组成员的位置信息，当有定位请求端向服务器请求群组的位置信息，服务器可以直接向定位请求端返回错误标识，表明服务器当前并未获取群组所有组成员的位置信息。
本发明实施例中，群组的定位参数以资源的属性的形式实现，资源是机器通信系统中对物理实体(如，传感器、定位装置)、应用程序对象(如，控制定位流程的程序、对定位结果进行处理的程序)、数据的统称，可以用资源结构来描述，是独立可寻址的，能够被搜索和发现，且具有唯一的标识，通常用通用资源标识符(英文：Uniform Resource Identifier；简称:URI)作为资源标识。资源包含有属性信息，也可以包含有子资源，群组的定位参数即包含在服务器中定位相关的资源的属性信息或子资源的属性信息之中。
实际情况中，定位请求端需要在定位前在服务器上创建了定位相关的资源，在定位相关的资源中保存有群组的定位参数。本发明实施例中，参照图5，在步骤101之前，还包括以下步骤：
步骤107：服务器根据群组成员的信息创建群组资源。
具体的，群组成员信息可以为群组创建端发送至服务器的，也可以为创建者直接在服务器上进行输入操作输入的。其中，群组创建端与定位请求端可以相同，也可以不相同，例如，运输公司的管理员甲通过办公电脑创建了车队群组，办公电脑即为群组创建端，而管理员甲赋予管理员乙获取车队位置信息的权限，则管理员乙可以通过手持终端向服务器请求车队的位置信息，此时，管理员乙的手持终端即为定位请求端。
群组创建端向服务器发送创建群组(Group)资源的请求，请求中携带有群组成员的信息，如群组成员的标识。服务器响应请求，创建群组资源，将群组创建端发送请求中包含的被定位终端关联成组。
参照图6，为Group资源的一种资源结构的示意图，Group资源的属性包括：群组名称(Group Name)；群组创建端(Creator)；群组成员标识(Member  IDs)，通过在Group资源的Member IDs中添加被定位终端的标识，即可将该被定位资源加入到群组中，使其成员群组的组成员。实际情况中，根据不同的需求，Group资源还可以包含其他属性以及子资源，本发明实施例在此不再详述。
步骤108：服务器根据群组资源和群组定位参数创建群组定位策略资源，群组定位策略资源包括群组资源标识对应群组的定位组播地址，群组定位参数包括定位更新周期、定位信息来源、群组位置信息存储位置中的任意一项；其中，服务器根据群组定位策略资源包含的定位组播地址组播定位请求。
具体的，用户向服务器发送创建定位策略(Group Location Policy)资源(以下简称GLP资源)的请求，请求中携带有具体的群组定位参数，以及执行该定位策略的群组资源，服务器执行步骤108，根据用户请求中携带的信息创建GLP资源。
参照图7，为GLP资源的一种资源结构的示意图，GLP资源的属性信息包括：群组标识(Group ID)，为关联该定位策略资源的群组的标识，即Group ID对应的群组根据该GLP资源定义的定位策略进行定位；群组定位名称(Group Location Name)，为为关联该定位策略资源的群组的名称；定位组播地址(Group Adress)，为Group ID对应的群组的定位组播地址。
可选的，GLP资源的属性信息还可以包含以下内容：定位更新周期(Location Update Period)，用于指示服务器根据设定的周期对群组进行定位，更新群组的位置信息；群组定位状态(Group Location Status)，为群组定位是否成功的状态信息。
可选的，本发明实施例中，一项GLP资源中可以关联多个群组，即，针对GLP关联的多个群组中的任一一个群组，均采用GLP资源定义的群组定位策略进行定位。
可选的，GLP资源的属性信息还可以包括：定位信息来源(Location Source)，用于定义群组的位置信息的来源，具体来源包括底层网络的定位服务器(如通信运营商提供的定位服务器)、被定位终端自身、以及位置共享信 息源。通过Location Source属性可以将群组的各组成员的位置信息来源定义为相同类型，便于利用组播获取各组成员的位置信息。
可选的，本发明实施例中，在步骤107之前，还包括：
步骤109：服务器为被定位终端创建定位参数资源，定位参数资源包括服务器中用于存储被定位终端的位置信息的存储空间的信息。
具体的，在创建群组资源之前，群组创建端请求服务器为每一个被定位终端创建定位参数(Location Parameter)资源，本发明实施例以下内容简称为LPa资源。
本发明实施例中，服务器为每个被定位终端创建了Location Container资源，Location Container定义了服务器存储获取到的被定位终端的位置信息在服务器侧的存储单元中的存储位置。实际情况中，用于存储被定位终端位置信息的存储单元可以部署在服务器的机壳内部，也可以部署在服务器机壳外部，本发明实施例中均视为服务器的存储单元。
参照图8，为LPa资源的一种资源结构的示意图，LPa资源的属性信息包括：定位结果存储器资源标识(Location Container ID)，为存储被定位终端的位置信息的Location Container资源的标识；定位结果存储器资源名称(Location Container Name)，为存储被定位终端的位置信息的Location Container资源的名称。
可选的，LPa资源中还包含如下属性：定位服务器(Location Server)，为提供被定位终端的位置信息的定位服务器的信息；定位目标标识(Location Target Id)，为在定位服务器中检索被定位终端的位置信息的标识；定位状态(Location Status)，为被定位终端的定位是否成功的状态。
实际请情况中，被定位终端的位置信息可以不由底层网络中的定位服务器提供，这种情况下，LPa资源可以不包含Location Target ID、Location Server两个属性，或者上述两个属性的值为空。
通过在LPa资源中添加Location Server、Location Target ID属性，即可在网络不支持组播，或者组播定位请求失败时，根据Location Server、Location  Target ID中保存的的信息，向被定位终端的位置数据提供方单播定位请求，以保证能够获得定位结果。
本发明实施例中，在执行步骤107时，服务器具体根据至少两个被定位终端的定位参数资源的标识，创建群组资源，至少两个被定位终端为群组资源对应的群组的组成员。其中，通过在Group资源的Number IDs属性中添加被定位终端的定位参数资源的标识，即可将被定位终端加入群组。
可选的，本发明实施例中，步骤108中创建的群组定位策略资源还包括：群组位置信息存储器资源标识(Group Container ID)，群组位置信息存储器资源为服务器为群组创建的，用于对群组的各组成员的位置信息进行混聚处理的资源。服务器根据群组定位策略资源包含的群组位置信息存储器资源的标识，定位群组位置信息存储器资源，并利用所述群组位置信息存储器资源对群组的各组成员的位置信息进行混聚处理。
具体的，服务器执行步骤103时，即是通过群组位置信息存储器资源将每个组成员的位置信息进行混聚，生成群组位置信息。
可选的，继续参照图7，GLP资源的属性还包括：数据返回策略(Method)，为服务器未能获取所有组成员的位置信息时，对数据的处理方式。具体处理方式包括：其一，返回错误状态，告知请求者当前未获取到所有组成员的位置信息；其二，将已经获取的组成员的位置信息混聚为群组位置信息，将群组位置信息返回给定位请求者，并告知定位请求者定位失败的组成员的信息。
参照图9，为服务器根据GLP中的Method信息处理接收的位置信息的方式的流程示意图，该流程包括如下步骤：
步骤110：服务器接收位置信息提供方返回的组成员的位置信息；
步骤111：服务器检查群组的GLP资源中的群组定位状态的值；如果群组定位状态处于定位成功状态，则执行步骤112；否则执行步骤113。
步骤112：将每个组成员的位置信息混聚为群组位置信息，并向定位请求端返回混聚得到的群组位置信息。
步骤113：获取GLP资源中的数据返回策略属性的内容，在数据返回策 略为第一内容时，执行步骤114；在数据返回策略为第二内容时，执行步骤115。
步骤114：将已经成功定位的组成员的位置信息混聚为群组位置信息，向定位请求端返回群组位置信息，以及定位失败的组成员的信息。
步骤115：向定位请求端返回表明群组定位失败的消息。
具体的，数据返回策略(Method)的第一内容指示服务器在有组成员的位置信息获取失败时，仍然将成功定位的组成员的位置信息进行混聚，并将混聚结果返回给定位请求端；而Method的第二内容指示服务器在有组成员的位置信息获取失败时，直接向定位请求端返回错误信息。本发明实施例中并不限定Method在上述两种状态时的具体值。
通过在GLP中增加Method属性，可以定义服务器在有组成员的位置信息获取失败时，采用何种方式处理获取的位置信息，以满足不同用户的不同需求。
可选的，当服务器分别创建好LPa资源、Group资源、GLP资源时，均向群组创建者返回资源创建成功的通知，以告知群组创建者资源创建成功，使其可以进入资源创建的下一个阶段的操作。
当创建完成上述LPa资源、Group资源、GLP资源时，即在服务器中保存了群组的群组的定位参数，服务器即可根据LPa资源、Group资源、GLP资源对群组进行定位，并将定位结果混聚为群组位置信息，将该条群组位置信息返回给定位请求端。
为了便于理解，下面结合具体应用实例对本发明实施例提供的定位方法予以详述。
参照图10，本应用实例的场景为机器通信网络中的幼儿园安全监护系统，其中，幼儿园老师或园方使用的终端设备为定位请求端；幼儿园小朋友们佩戴的定位设备为被定位终端，在图中表示为“child#i”，意为编号为i的小朋友的定位设备，其提供的位置信息能够表明小朋友的位置；幼儿园的机房中的计算机即为服务器，机器通信网络可以基于无线通信网络实现，如无线保 真(Wireless Fidelity)网络。
首先，老师通过智能手机向服务器发送请求，为自己班上的20个小朋友创建LPa资源，每个小朋友对应的LPa资源包括其位置信息提供方的信息、服务器中保存该小朋友的位置数据的存储器资源的信息，以及该小朋友的定位状态(定位成功，或定位失败)。服务器在接收到创建LPa资源的请求时，首先对请求者进行鉴权，鉴权成功则根据请求携带的信息为每个小朋友创建LPa资源。
然后，老师请求服务器创建Group资源，请求中携带有自己班上20个小朋友的LPa资源的标识。服务器响应请求创建Group资源，在Group资源的Member IDs属性中添加请求中携带的LPa资源的标识，实现将该老师班上的小朋友关联成一个群组。
再然后，老师请求服务器创建GLP资源，请求中携带有关联到该GLP资源的群组资源的标识，以及具体的定位策略参数(如定位更新周期、定为组播地址等)。服务器响应请求，创建该GLP资源，定义该群组的定位策略。
再然后，服务器可以向该老师使用的智能手机返回资源创建成功的消息，并根据创建的LPa资源、Group资源、GLP资源向每个小朋友的定位设备的位置信息提供方组播定位请求。
然后，服务器接收20个小朋友各自对应的位置信息提供方返回的位置信息，并利用GLP资源的子资源Group Container资源将20条位置信息混聚为班级成员位置信息，并将混聚得到的班级成员位置信息返回给发起定位请求的该老师。
实际情况中，只有在群组定位初始阶段需要创建LPa资源、Group资源、GLP资源，之后服务器可以LPa资源、Group资源、GLP资源周期性地对班级成员位置信息进行更新，并定时将该位置信息返回给老师；老师也可以随时发送班级成员位置信息查询请求，获取20个小朋友的位置信息。
上述应用实例中，老师只需要向服务器发送一条查询请求，服务器也只需要向老师返回一条班级成员位置信息，即可使老师获知20个小朋友的位置 信息。而现有技术中，老师需要向服务器逐一发送定位请求，服务器逐一返回定位结果，相较于现有技术，本发明实施例提供的方案能够大大节约服务器与定位请求端之间的传输资源。
不仅如此，应用实例中，服务器通过组播的方式向20个小朋友的位置信息提供方发送定位请求，而现有技术中，服务器需要向20个小朋友的位置信息提供方逐一单播定位请求，相较于现有技术，本发明实施例提供的方案能够大大节约服务器与位置信息提供方之间的传输资源，提高网络效率，减少定位时间。
基于相同的发明构思，本发明实施例在第二方面提供一种定位装置200，参照图11，装置200包括：
组播模块201，用于在对群组进行定位时，根据预存的群组的定位组播地址向群组的各组成员的位置信息提供方组播定位请求，定位组播地址包含群组的各组成员的位置信息提供方的地址信息，定位请求用于请求获取群组的组成员的位置信息；
接收模块202，用于接收群组的各组成员的位置信息提供方返回的位置信息。
可选的，本发明实施例中，装置200还包括：
混聚模块203，用于将接收的群组的各成员的位置信息进行混聚，生成群组位置信息；
结果返回模块204，用于向定位请求端返回混聚生成的群组位置信息。
可选的，本发明实施例中，装置200还包括：
判断模块205，用于判断向群组的各组成员的位置信息提供方发送定位请求的网络是否支持组播；
其中，组播模块201用于：在判断模块205确定网络支持组播时，根据定位组播地址向群组的各组成员的位置信息提供方组播定位请求。
可选的，本发明实施例中，装置200还包括：
定位资源创建模块206，用于根据群组成员的信息创建群组资源；以及根 据群组资源和群组定位参数创建群组定位策略资源，群组定位策略资源包括群组资源对应群组的定位组播地址，群组定位参数包括定位更新周期、定位信息来源、群组位置信息存储位置中的任意一项；
其中，组播模块201根据群组定位策略资源包含的定位组播地址组播定位请求。
可选的，本发明实施例中，定位资源创建模块206用于：为被定位终端创建定位参数资源，定位参数资源包括装置中用于存储被定位终端的位置信息的存储空间的信息；以及根据至少两个被定位终端的定位参数资源的标识，创建群组资源，至少两个被定位终端为群组资源对应的群组的组成员。
可选的，本发明实施例中，定位资源创建模块206用于：为群组创建群组位置信息存储器资源，群组位置信息存储器资源用于对群组的各组成员的位置信息进行混聚处理的资源；
其中，群组定位策略资源包括群组位置信息存储器资源的标识，装置根据群组定位策略资源定位群组位置信息存储器资源，并利用群组位置信息存储器资源对群组的各组成员的位置信息进行混聚处理。
本实施例中定位装置200与第一方面提供的定位方法是基于同一发明构思下的两个方面，在前面已经对定位方法的实施过程作了详细的描述，所以本领域技术人员可根据前述描述清楚地了解定位装置200的结构及实施过程，为了说明书的简洁，在此就不再赘述了。
基于相同的发明构思，本发明实施例在第三方面提供一种服务器300，参照图12，服务器300包括：处理器301、存储单元302、收发器303，其中，处理器301分别与存储单元302、收发器303相连。
其中，收发器303用于向位置信息提供方发送定位请求，以及接收位置信息提供方返回的位置信息。存储单元302用于存储指令。
处理器301用于执行存储单元302存储的指令，以执行如下操作：在对群组进行定位时，指示收发器303根据预存的群组的定位组播地址向群组的各组成员的位置信息提供方组播定位请求，定位组播地址包含群组的各组成 员的位置信息提供方的地址信息，定位请求用于请求获取群组的组成员的位置信息；以及指示收发器303接收群组的各组成员的位置信息提供方返回的位置信息。
可选的，服务器300还包括：总线304，处理器301具体通过总线304分别与存储单元302以及收发器303相连。
可选的，本发明实施例中，收发器303还用于与定位请求端进行数据传输；
处理器301还用于：将接收的群组的各成员的位置信息进行混聚，生成群组位置信息；并指示收发器303向定位请求端返回混聚生成的群组位置信息。
可选的，本发明实施例中，处理器301在用于：指示收发器303根据预存的群组的定位组播地址向群组的各组成员的位置信息提供方组播定位请求之前，还用于：判断向群组的各组成员的位置信息提供方发送定位请求的网络是否支持组播，并在网络支持组播时，指示收发器303根据预存的群组的定位组播地址向群组的各组成员的位置信息提供方组播定位请求。
可选的，本发明实施例中，处理器301还用于：根据群组成员的信息创建群组资源；并根据群组资源和群组定位参数创建群组定位策略资源，群组定位策略资源包括群组资源对应群组的定位组播地址，群组定位参数包括定位更新周期、定位信息来源、群组位置信息存储位置中的任意一项；
其中，收发器303用于：根据群组定位策略资源中的定位组播地址组播定位请求。
可选的，本发明实施例中，处理器301在根据群组成员的信息创建群组资源之前，还用于：为被定位终端创建定位参数资源，定位参数资源包括用于存储被定位终端的位置信息的存储空间的信息；
处理器301用于：根据群组成员的信息创建群组资源，具体为：
处理器301根据至少两个被定位终端的定位参数资源的标识，创建群组资源，至少两个被定位终端为群组资源对应的群组的组成员。
可选的，本发明实施例中，处理器301还用于：为群组创建群组位置信息存储器资源，群组位置信息存储器资源用于对群组的各组成员的位置信息进行混聚处理的资源；并根据群组定位策略资源定位群组位置信息存储器资源，并利用群组位置信息存储器资源对群组的各组成员的位置信息进行混聚处理。
可选的，存储单元302为随机存取存储器，在服务器300进入正常运行状态后，在随机存取存储器中运行应用程序和操作系统。
可选的，服务器300还包括：只读存储器，当需要运行服务器300时，通过固化在只读存储器中的基本输入输出系统引导系统进行启动，引导服务器300进入正常运行状态。
本实施例中定位服务器300与第一方面提供的定位方法是基于同一发明构思下的两个方面，在前面已经对定位方法的实施过程作了详细的描述，所以本领域技术人员可根据前述描述清楚地了解定位服务器300的结构及实施过程，为了说明书的简洁，在此就不再赘述了。
基于相同的技术构思，本发明实施例在第四方面提供了另一种定位方法，该方法包括如下步骤：
定位请求端向服务器发送获取群组位置信息的请求；
定位请求端接收服务器返回的群组位置信息，其中，群组位置信息为服务器根据预存的群组的定位组播地址向群组的各组成员的位置信息提供方组播定位请求，并接收群组的各组成员的位置信息提供方返回的位置信息，并将接收的群组的各成员的位置信息进行混聚而生成的。
上述定位方法中，定位请求端只需向服务器发送一条群组定位请求，并接收服务器返回的一条群组位置信息，即可获知整个群组中每个组成员的位置信息，相较于现有技术中需要逐一向服务器发送定位请求，并接收服务器注意返回的每个被定位终端的位置信息，能够有效降低服务器向定位请求端返回定位结果时的传输资源占用，提高传输资源利用效率。不仅如此，由于将整个群组的位置信息保存在一项群组位置信)中，便于定位请求端进行数 据处理以及数据管理。
可选的，本发明实施例中，定位请求端在向服务器发送获取群组位置信息的请求之前，还可以向服务器发送群组成员的定位参数，请求服务器创建群组资源，以及向服务器发送群组定位参数，请求服务器创建群组定位策略资源，以使服务器根据创建的群组资源、群组定位策略资源对群组的组成员的位置信息提供方组播定位请求，进行定位。
本实施例中第四方面提供的定位方法与第一方面提供的定位方法是基于同一发明构思下的两个方面，在前面已经对第一方面提供的定位方法的实施过程作了详细的描述，所以本领域技术人员可根据前述描述清楚地了解本实施例中的第四方面提供的定位方法的实施过程，为了说明书的简洁，在此就不再赘述了。
基于相同的技术构思，本发明实施例在第五方面提供一种请求定位的装置，该请求定位的装置包括：
发送模块，用于向服务器发送获取群组位置信息的请求；
接收模块，用于接收服务器返回的群组位置信息，其中，群组位置信息为服务器根据预存的群组的定位组播地址向群组的各组成员的位置信息提供方组播定位请求，并接收群组的各组成员的位置信息提供方返回的位置信息，并将接收的群组的各成员的位置信息进行混聚而生成的。
本实施例在第五方面中请求定位的装置与第一方面提供的定位方法是基于同一发明构思下的两个方面，在前面已经对定位方法的实施过程作了详细的描述，所以本领域技术人员可根据前述描述清楚地了解五方面中请求定位的装置的结构及实施过程，为了说明书的简洁，在此就不再赘述了。
基于相同的发明构思，本发明实施例在第六方面提供一种定位请求设备，包括：
发送机，用于向服务器发送获取群组位置信息的请求；
接收机，用于接收服务器返回的群组位置信息，其中，群组位置信息为服务器根据预存的群组的定位组播地址向群组的各组成员的位置信息提供方 组播定位请求，并接收群组的各组成员的位置信息提供方返回的位置信息，并将接收的群组的各成员的位置信息进行混聚而生成的。
本发明实施例中提供的一个或多个技术方案，至少具有如下技术效果或优点：
本发明实施例提供的技术方案中，服务器以组播的方式向群组成员的位置信息提供方发送定位请求，并接收各群组成员的位置信息提供方返回的位置信息，实现对群组的定位。由于采用组播的方式发送定位请求，相较于现有技术中采用的逐一发送定位请求的方案，不仅减少了传输链路中的信息传输量，进而提高了空口传输资源的利用率，而且还因减轻了传输链路的拥塞，提高传输速率，减少时延，进而减少了定位耗时。
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。
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，则可对这些实施例作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进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明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 (18)

  1. 一种定位方法，其特征在于，包括：
    服务器在对群组进行定位时，根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求，所述定位组播地址包含所述群组的各组成员的位置信息提供方的地址信息，所述定位请求用于请求获取所述群组的组成员的位置信息；
    所述服务器接收所述群组的各组成员的位置信息提供方返回的所述位置信息。
  2. 如权利要求1所述的方法，其特征在于，在所述服务器接收所述群组的各组成员的位置信息提供方返回的位置信息之后，还包括：
    所述服务器将接收的所述群组的各成员的位置信息进行混聚，生成群组位置信息；
    所述服务器向定位请求端返回混聚生成的所述群组位置信息。
  3. 如权利要求1或2所述的方法，其特征在于，在所述服务器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求之前，还包括：
    所述服务器判断向所述群组的各组成员的位置信息提供方发送定位请求的网络是否支持组播，并在所述网络支持组播时，执行所述根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求的步骤。
  4. 如权利要求1或2所述的方法，其特征在于，在所述服务器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求之前，还包括：
    所述服务器根据群组成员的信息创建群组资源；
    所述服务器根据所述群组资源和群组定位参数创建群组定位策略资源，所述群组定位策略资源包括所述所述群组资源对应群组的定位组播地址，所 述群组定位参数包括定位更新周期、定位信息来源、群组位置信息存储位置中的任意一项；
    其中，所述服务器根据所述群组定位策略资源包含的所述定位组播地址组播所述定位请求。
  5. 如权利要求4所述的方法，其特征在于，在所述服务器根据群组成员的信息创建群组资源之前，还包括：
    所述服务器为被定位终端创建定位参数资源，所述定位参数资源包括所述服务器中用于存储所述被定位终端的位置信息的存储空间的信息；
    所述服务器根据群组成员的信息创建群组资源，包括：
    所述服务器根据至少两个被定位终端的定位参数资源的标识，创建所述群组资源，所述至少两个被定位终端为所述群组资源对应的群组的组成员。
  6. 如权利要求4所述的方法，其特征在于，所述群组定位策略资源还包括：群组位置信息存储器资源的标识，其中，所述服务器根据所述群组定位策略资源包含的所述群组位置信息存储器资源的标识，定位群组位置信息存储器资源，并利用所述所述群组位置信息存储器资源对所述群组的各组成员的位置信息进行混聚处理。
  7. 一种定位装置，其特征在于，包括：
    组播模块，用于在对群组进行定位时，根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求，所述定位组播地址包含所述群组的各组成员的位置信息提供方的地址信息，所述定位请求用于请求获取所述群组的组成员的位置信息；
    接收模块，用于接收所述群组的各组成员的位置信息提供方返回的所述位置信息。
  8. 如权利要求7所述的装置，其特征在于，还包括：
    混聚模块，用于将接收的所述群组的各成员的位置信息进行混聚，生成群组位置信息；
    结果返回模块，用于向定位请求端返回混聚生成的所述群组位置信息。
  9. 如权利要求7或8所述的装置，其特征在于，还包括：
    判断模块，用于判断向所述群组的各组成员的位置信息提供方发送定位请求的网络是否支持组播；
    其中，所述组播模块用于：在所述判断模块确定所述网络支持组播时，根据所述定位组播地址向所述群组的各组成员的位置信息提供方组播所述定位请求。
  10. 如权利要求7或8所述的装置，其特征在于，还包括：
    定位资源创建模块，用于根据群组成员的信息创建群组资源；以及根据所述群组资源和群组定位参数创建群组定位策略资源，所述群组定位策略资源包括所述所述群组资源对应群组的定位组播地址，所述群组定位参数包括定位更新周期、定位信息来源、群组位置信息存储位置中的任意一项；
    其中，所述组播模块根据所述群组定位策略资源包含的所述定位组播地址组播所述定位请求。
  11. 如权利要求10所述的装置，其特征在于，所述定位资源创建模块用于：为被定位终端创建定位参数资源，所述定位参数资源包括所述装置中用于存储所述被定位终端的位置信息的存储空间的信息；以及根据至少两个被定位终端的定位参数资源的标识，创建所述群组资源，所述至少两个被定位终端为所述群组资源对应的群组的组成员。
  12. 如权利要求10所述的装置，其特征在于，所述定位资源创建模块用于：为所述群组创建群组位置信息存储器资源，所述群组位置信息存储器资源用于对所述群组的各组成员的位置信息进行混聚处理的资源；
    其中，所述群组定位策略资源包括群组位置信息存储器资源的标识，所述装置根据所述群组定位策略资源定位所述群组位置信息存储器资源，并利用所述所述群组位置信息存储器资源对所述群组的各组成员的位置信息进行混聚处理。
  13. 一种服务器，其特征在于，包括：
    收发器，用于向位置信息提供方发送定位请求，以及接收所述位置信息 提供方返回的位置信息；
    存储单元，用于存储指令；
    处理器，分别与所述收发器、所述存储单元相连，用于执行所述存储单元存储的所述指令，以执行如下操作：在对群组进行定位时，指示所述收发器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求，所述定位组播地址包含所述群组的各组成员的位置信息提供方的地址信息，所述定位请求用于请求获取所述群组的组成员的位置信息；以及指示所述收发器接收所述群组的各组成员的位置信息提供方返回的所述位置信息。
  14. 如权利要求13所述的服务器，其特征在于，所述收发器还用于与定位请求端进行数据传输；
    所述处理器还用于：将接收的所述群组的各成员的位置信息进行混聚，生成群组位置信息；并指示所述收发器向所述定位请求端返回混聚生成的所述群组位置信息。
  15. 如权利要求13或14所述的服务器，其特征在于，所述处理器在用于：指示所述收发器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求之前，还用于：判断向所述群组的各组成员的位置信息提供方发送定位请求的网络是否支持组播，并在所述网络支持组播时，指示所述收发器根据预存的所述群组的定位组播地址向所述群组的各组成员的位置信息提供方组播定位请求。
  16. 如权利要求13或14所述的服务器，其特征在于，所述处理器还用于：根据群组成员的信息创建群组资源；并根据所述群组资源和群组定位参数创建群组定位策略资源，所述群组定位策略资源包括所述所述群组资源对应群组的定位组播地址，所述群组定位参数包括定位更新周期、定位信息来源、群组位置信息存储位置中的任意一项；
    其中，所述收发器用于：根据所述群组定位策略资源中的所述定位组播地址组播所述定位请求。
  17. 如权利要求16所述的服务器，其特征在于，所述处理器在根据群组成员的信息创建群组资源之前，还用于：为被定位终端创建定位参数资源，所述定位参数资源包括用于存储所述被定位终端的位置信息的存储空间的信息；
    所述处理器用于：根据群组成员的信息创建群组资源，具体为：
    所述处理器根据至少两个被定位终端的定位参数资源的标识，创建所述群组资源，所述至少两个被定位终端为所述群组资源对应的群组的组成员。
  18. 如权利要求16所述的服务器，其特征在于，所述处理器还用于：为所述群组创建群组位置信息存储器资源，所述群组位置信息存储器资源用于对所述群组的各组成员的位置信息进行混聚处理的资源；并根据所述群组定位策略资源定位所述群组位置信息存储器资源，并利用所述所述群组位置信息存储器资源对所述群组的各组成员的位置信息进行混聚处理。
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