CN107734590B - Cellular user clustering communication method, system, eNodeB and terminal - Google Patents
Cellular user clustering communication method, system, eNodeB and terminal Download PDFInfo
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- CN107734590B CN107734590B CN201610663017.4A CN201610663017A CN107734590B CN 107734590 B CN107734590 B CN 107734590B CN 201610663017 A CN201610663017 A CN 201610663017A CN 107734590 B CN107734590 B CN 107734590B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
- H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W40/00—Communication routing or communication path finding
- H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
- H04W40/32—Connectivity information management, e.g. connectivity discovery or connectivity update for defining a routing cluster membership
Abstract
The invention discloses a cellular user clustering communication method, a system, eNodeB and a terminal, relating to the field of mobile communication, wherein the method comprises the following steps: the eNodeB establishes at least one cluster according to the position distribution relation of the user terminals, and determines a cluster head terminal and a cluster member terminal which belong to the cluster; an eNodeB distributes a cluster ID and cluster channel resources to a cluster head terminal; the cluster head terminal receives the request of establishing the D2D connection between the cluster member terminals, and allocates cluster channel resources to the D2D connection, so that the cluster member terminals communicate through the cluster channel resources. According to the method, the system, the eNodeB and the terminal, the user terminals in the cell are divided into a plurality of user clusters according to positions, resources are distributed according to the clusters, the cluster heads provide cluster information for gathering and broadcasting, and direct communication of users in the clusters is realized, autonomous clustering and device-to-device communication can be realized, the requirements of services on transmission characteristics such as communication delay and reliability are met, and the resource utilization efficiency is improved.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a cellular user clustering communication method, a cellular user clustering communication system, an eNodeB and a terminal.
Background
With the development of mobile internet and internet of things, various novel mobile data services are emerging continuously, and new performance requirements are provided for mobile communication network technologies. If the car networking service requires that the mobile communication network needs to support low-delay quick response and communication between mobile users which are relatively close to each other, meanwhile, the car networking users have high moving speed and wide moving area, and great challenges are provided for the network coverage capability and the communication reliability. A conventional mobile communication network based on cellular communication, such as a 4 th generation mobile communication system LTE-a (Long Term Evolution Advanced) system, includes two layers, namely a core network and a radio access network, wherein an eNodeB (evolved Node B) is mainly used as a basic Node for cellular communication on the radio access network side. The users establish wireless connection and establish bearing with the core network by accessing each eNodeB cell, thereby realizing mobile communication service among the users. The cellular networking structure based on the eNodeB realizes cell-level spectrum resource multiplexing and improves spectrum resource utilization efficiency, but requires that communication among users must complete access and data forwarding through the eNodeB, and particularly when a large number of users initiate service requests simultaneously, the system scheduling period is increased, the requirement of low-delay application on communication transmission delay among users is difficult to meet, and reliable communication among users is difficult to guarantee in weak coverage areas such as cell edges. Therefore, for the service characteristics of the novel mobile internet application such as the low-delay application, how to realize effective resource allocation, improve the resource utilization efficiency, reduce the communication delay between users and improve the communication reliability based on the cellular network is a problem to be solved by the mobile communication network.
Disclosure of Invention
In view of the above, a technical problem to be solved by the present invention is to provide a cellular user clustering communication method, system, eNodeB, and terminal.
According to an aspect of the present invention, there is provided a cellular user clustering communication method, including: the eNodeB establishes at least one cluster according to the position distribution relation of the user terminals, and determines a cluster head terminal and a cluster member terminal which belong to the cluster; the eNodeB allocates cluster IDs and cluster channel resources to the cluster head terminals; and the cluster head terminal receives a request for establishing D2D connection between the cluster member terminals and allocates the cluster channel resources to the D2D connection so as to enable the cluster member terminals to communicate through the cluster channel resources.
Optionally, the cluster channel resource includes: cluster common channel resources and cluster dedicated channel resources; and the cluster head terminal allocates the cluster dedicated channel resource to the D2D connection, so that the cluster member terminals communicate with each other through the cluster dedicated channel resource.
Optionally, the cluster head terminal broadcasts a user status message in the cluster; after receiving the user state information of the cluster head terminal, the cluster member terminal sends a cluster member broadcast message by using the cluster public channel resource; the cluster head terminal broadcasts the cluster member broadcast message in the cluster; wherein, the information carried by the cluster member broadcast message includes: user identification, service type and service content.
Optionally, the receiving, by the cluster head terminal, a request for establishing a D2D connection between the cluster member terminals, and allocating the cluster channel resource to the D2D connection includes: the cluster member terminal sends the request for establishing the D2D connection to the cluster head terminal by using the cluster common channel resource; wherein, the information carried by the request for establishing the D2D connection includes: user identification, target user identification and request type; the cluster head terminal sends a D2D connection establishment instruction to the cluster member terminal; wherein, the D2D connection establishment indication carries cluster dedicated channel resource information.
Optionally, after the cluster head terminal allocates the cluster dedicated channel resource to the D2D connection, the method includes: the requesting cluster member terminal connected with the D2D detects the cluster dedicated channel resource; the requesting cluster member terminal determines whether to establish the D2D connection based on the channel interference level of the cluster dedicated channel resource, and sends a D2D connection confirmation message to the cluster head terminal; the cluster head terminal updates the resource occupation condition and the channel interference level of the cluster dedicated channel according to the confirmation message, and periodically reports a cluster state message, wherein the information carried by the cluster state message comprises: cluster head user identification, cluster head adjacent user and cluster dedicated channel resource information; and the eNodeB allocates and multiplexes the cluster channel resources according to the occupation situation of the cluster dedicated channel resources and the channel interference level.
Optionally, the user terminal establishes a connection with the eNodeB and sends a service message; wherein, the information carried by the service message includes: source address, destination address, service type, service content: when the user terminal is judged to have the requirement of establishing direct communication between terminals based on the service message, the eNodeB sends a notification message to the user terminal so that the user terminal sends a user state message by using a specified frequency resource and monitors the user state messages sent by other user terminals; wherein the other user terminals include: cluster head terminal, cluster member terminal.
Optionally, the sending, by the ue, the user status message using the designated frequency resource and monitoring the user status messages sent by other ues includes: when the user terminal judges that no other user terminal sends the user state information or the signal intensity of the user state information sent by other users is lower than a preset first threshold, the user state information is sent by using the appointed frequency resource; wherein, the information carried by the user status message includes: user identification, cluster ID, cluster head identification and cluster public channel resource number.
Optionally, when the user terminal determines that the monitored signal strength of the user status message sent by the other user terminal is greater than a preset second threshold, it determines that the other user terminal is an adjacent user and records the user identifier of the adjacent user.
Optionally, when the user terminal determines that the other user terminal sending the user status message is the cluster head terminal and the user terminal does not belong to any cluster, the user terminal joins the cluster where the cluster head terminal is located, and sends the updated user status message.
Optionally, the cluster member terminal sends a user status message using a designated frequency resource and monitors user status messages sent by other user terminals; and when the cluster member terminal judges that other user terminals sending the user state information are the cluster head terminal and the signal quality of the cluster head terminal of the cluster where the cluster member terminal is located is lower than a third threshold within a preset time length, the cluster member terminal is added into a new cluster where the cluster head terminal is located and sends the updated user state information.
Optionally, when the ue does not belong to any cluster, the ue sends a user measurement message to the eNodeB according to a preset period; the user measurement message comprises information of adjacent users; when the user terminal newly joins in a cluster or the cluster member terminal updates the cluster, the user terminal or the cluster member terminal immediately sends a user measurement message to an eNodeB, wherein the user measurement message comprises cluster head information of the newly joined cluster or the updated cluster; and the eNodeB counts the user position relation and the cluster distribution situation according to the received user measurement message.
According to another aspect of the present invention, there is provided an eNodeB comprising: the base station cluster management module is used for establishing at least one cluster according to the position distribution relation of the user terminal, determining a cluster head terminal and a cluster member terminal belonging to the cluster, and distributing a cluster ID and cluster channel resources to the cluster head terminal; a base station sending module, configured to notify the cluster head terminal of the cluster ID and the cluster channel resource; the cluster head terminal receives a request for establishing a D2D connection between the cluster member terminals, and allocates the cluster channel resource to the D2D connection, so that the cluster member terminals communicate with each other through the cluster channel resource.
Optionally, the cluster channel resource includes: cluster common channel resources and cluster dedicated channel resources; the cluster head terminal allocates the cluster dedicated channel resource to the D2D connection, so that the cluster member terminals communicate with each other through the cluster dedicated channel resource; the eNodeB comprises: a base station receiving module, configured to receive a cluster state message periodically reported by the cluster head terminal, where information carried by the cluster state message includes: cluster head user identification, cluster head adjacent user and cluster dedicated channel resource information; and the base station cluster management module is also used for allocating and multiplexing cluster channel resources according to the occupation condition of the cluster dedicated channel resources and the channel interference level.
Optionally, the user terminal establishes a connection with the eNodeB and sends a service message; the base station cluster management module is also used for appointing the user terminal to be used for sending user state information and monitoring frequency resources of other user terminals when judging that the user terminal has the requirement of establishing direct communication between terminals; the base station sending module is further configured to send a notification message to the user terminal, so that the user terminal sends a user status message using a specified frequency resource and monitors user status messages sent by other user terminals.
Optionally, the base station receiving module is further configured to receive a user measurement message sent by the user terminal that does not belong to any cluster according to a preset period, where the user measurement message includes information of an adjacent user; or receiving a user measurement message sent by the user terminal newly joining the cluster or the cluster member terminal of the updated cluster, wherein the user measurement message comprises cluster head information of the newly joining cluster or the updated cluster; and the base station resource management module is also used for counting the user position relation and the cluster distribution condition according to the received user measurement message.
According to still another aspect of the present invention, there is provided a terminal, comprising: a first receiving unit, configured to receive a request for establishing a D2D connection between cluster member terminals; a terminal cluster management module, configured to allocate cluster channel resources to the D2D connection; a first sending unit, configured to send the allocated cluster channel resource information to the cluster member terminals; and the cluster member terminals communicate with each other through the cluster channel resources.
Optionally, the cluster channel resource includes: cluster common channel resources and cluster dedicated channel resources; the terminal cluster management module is configured to allocate the cluster dedicated channel resource to the D2D connection, so that the cluster member terminals communicate with each other through the cluster dedicated channel resource.
Optionally, the first sending unit is configured to broadcast a user status message in the cluster; the terminal further comprises: a second receiving unit, configured to receive a user status message of the cluster head terminal; a second transmitting unit for transmitting a cluster member broadcast message using the cluster common channel resource; wherein the first sending unit is further configured to broadcast the cluster member broadcast message within the cluster; the information carried by the cluster member broadcast message includes: user identification, service type and service content.
Optionally, the second sending unit is further configured to send the request for establishing a D2D connection to the cluster head terminal using the cluster common channel resource; wherein, the information carried by the request for establishing the D2D connection includes: user identification, target user identification and request type; the first sending unit is further configured to send a D2D connection establishment instruction to the cluster member terminal; wherein, the D2D connection establishment indication carries cluster dedicated channel resource information.
Optionally, the second measuring module is configured to detect the cluster of dedicated channel resources, and determine whether to establish the D2D connection based on a channel interference level of the cluster of dedicated channel resources; wherein, the second sending unit sends a D2D connection confirmation message carrying the channel interference level to the cluster head terminal; a first measurement module, configured to update the resource occupation status and the channel interference level of the cluster dedicated channel according to the acknowledgement message; the first sending unit periodically reports a cluster state message to the eNodeB, where the information carried by the cluster state message includes: cluster head user identification, cluster head adjacent user and cluster dedicated channel resource information.
Optionally, the second sending unit is further configured to establish a connection with the eNodeB and send a service message, and send a user status message using a frequency resource specified by the eNodeB; the second receiving unit is further configured to monitor a user status message sent by another ue using the frequency resource specified by the eNodeB; wherein, the information carried by the service message includes: source address, destination address, service type, service content; the other user terminals include: cluster head terminal, cluster member terminal.
Optionally, the second sending unit is further configured to send the user status message by using the specified frequency resource when it is determined that no other user terminal sends the user status message or the signal strength of the user status message sent by the other user is lower than a preset first threshold; wherein, the information carried by the user status message includes: user identification, cluster ID, cluster head identification and cluster public channel resource number.
Optionally, the second receiving unit is further configured to determine that the other monitored user terminal is an adjacent user and record the user identifier of the adjacent user when the signal strength of the user status message sent by the other monitored user terminal is greater than a preset second threshold.
Optionally, the second sending unit is further configured to send the updated user status message after joining the cluster or performing cluster updating; when other user terminals sending the user state information are judged to be the cluster head terminals and the terminal does not belong to any cluster, the terminal is added into the cluster where the cluster head terminal is located; or, the terminal is a cluster member terminal, and when it is determined that other user terminals sending the user state message are the cluster head terminal and the signal quality of the cluster head terminal of the cluster where the terminal is located is lower than a third threshold within a preset time period, the terminal joins a new cluster where the cluster head terminal is located.
Optionally, the second sending unit is further configured to send a user measurement message to the eNodeB according to a preset period when the terminal does not belong to any cluster; wherein, the user measurement message contains information of adjacent users; or, when the terminal newly joins the cluster or updates the cluster, immediately sending a user measurement message to the eNodeB, wherein the user measurement message includes cluster head information of the newly joined cluster or the updated cluster.
According to still another aspect of the present invention, there is provided a cellular user clustering communication system, including: an eNodeB as described above, a terminal as described above.
According to the cellular user clustering communication method, the cellular user clustering communication system, the eNodeB and the terminal, the user terminals which are low in time delay and high in reliability in a cell are divided into a plurality of user clusters according to positions, resources are distributed according to the clusters, cluster heads provide cluster information aggregation broadcast and realize direct communication of users in the clusters, mutual discovery of adjacent users in the position of a cellular network and autonomous clustering and rapid broadcast of cluster user information and direct communication from equipment to equipment can be realized, the problems that the existing cellular network needs the eNodeB to finish access and data forwarding, transmission time delay is high, and the reliability of user communication in a weak coverage area is poor are solved, meanwhile, the resource utilization efficiency is improved, and the network performance is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a flow chart of one embodiment of a cellular user clustering communication method according to the present invention;
fig. 2 is a flow chart illustrating another embodiment of a cellular user clustering communication method according to the present invention;
fig. 3 is a block diagram of an embodiment of a cellular user clustering communication system according to the present invention.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Hereinafter, "first", "second", etc. are only descriptive differences and have no other special meanings.
Fig. 1 is a flowchart of an embodiment of a cellular user clustering communication method according to the present invention, as shown in fig. 1:
The cluster channel resources include: cluster common channel resources and cluster dedicated channel resources. The cluster head terminal broadcasts the user state information in the cluster, the cluster member terminal uses the cluster public channel resource to send the cluster member broadcast information after receiving the user state information of the cluster head terminal, the cluster head terminal broadcasts the cluster member broadcast information in the cluster, and the information carried by the cluster member broadcast information comprises: user identification, service type, service content, etc.
The cluster member terminal uses the cluster public channel resource to send a request for establishing D2D connection to the cluster head terminal, the cluster head terminal sends a D2D connection establishment indication to the cluster member terminal, and the D2D connection establishment indication carries the cluster dedicated channel resource information. The requesting cluster member terminal connected with the D2D detects the cluster dedicated channel resources, determines whether to establish the D2D connection or not based on the channel interference level of the cluster dedicated channel resources, and sends a D2D connection confirmation message to the cluster head terminal.
The cluster head terminal updates the occupation condition of the cluster dedicated channel resources and the channel interference level according to the confirmation message, and periodically reports a cluster state message, wherein the information carried by the cluster state message comprises: cluster head user identification, cluster head adjacent user and cluster dedicated channel resource information. And the eNodeB allocates and multiplexes cluster channel resources according to the occupation situation of the cluster dedicated channel resources and the channel interference level.
The cellular user clustering communication method in the above embodiment can, for the characteristics of low delay, high delay requirement of high reliable communication service, wide moving range and regionalization of application, divide low delay, high reliable application users in a cell into a plurality of user clusters according to positions, allocate resources according to the clusters, and provide information aggregation broadcast in the clusters by cluster heads and realize direct communication of the users in the clusters, thereby satisfying the requirements of service on transmission characteristics such as communication delay, reliability and the like, and simultaneously improving the utilization efficiency of resources and improving the network performance.
Fig. 2 is a flowchart illustrating another embodiment of a cellular user clustering communication method according to the present invention, as shown in fig. 2:
in steps 201, 202, 203, the user terminal initiates a connection request, establishes a connection with the eNodeB, and sends a service message to the eNodeB.
Step 204, a core network Gateway (Serving Gateway) analyzes the service message data packet, and judges that the current user is a low-delay service user, or judges that the source end and the destination end of the current user data packet are in the same eNodeB range by analyzing the IP address of the data packet, and then determines that the current user has the direct communication requirement between users.
And step 205, the core network gateway feeds back the analysis result to the eNodeB.
In steps 206, 207, 208, the eNodeB informs the ue through the PDSCH to send user status messages through the designated frequency resources and monitors the user status messages sent by other ues.
In steps 209, 210, 211, the ue transmits the user status message using the designated frequency resource and listens for the user status messages transmitted by other ues.
And the user terminal adopts a CSMA-CD mechanism to compete for occupying frequency resources to send the user state information. The user terminal adopts default power when sending the user state information, and ensures that the signal intensity of the user state information monitored by other user terminals is related to the path loss. When the user terminal finds that no signal sent by other user terminals exists or the signal strength sent by other user terminals is lower than a certain preset threshold value, the current resource is judged to be idle, the user occupies the resource to send a user state message, and other users monitor the resource.
When the signal strength sent by other user terminals is monitored to be larger than or equal to a certain preset threshold value, the current resource is judged to be busy, and the user randomly delays for a certain time and then retries to send the user state message at the frequency resource. The user status message includes: user identification, cluster ID, cluster head identification, cluster common channel resource number (valid only if the user is a cluster head user), etc. The format and content of the user status message are shown in table 1 below.
Table 1 table of contents information of user status message
The user terminal sends user measurement messages to the eNodeB, steps 212, 213, 241. When the user terminal does not belong to any cluster, the user terminal sends a user measurement message to the eNodeB according to a specified period, wherein the user measurement message comprises a plurality of nearest neighbor user information of the user terminal.
Step 215, the eNodeB establishes a cluster according to the capability and the location relationship of the ue and determines a cluster head. And the eNodeB counts the user position relation and the cluster distribution condition according to the received user measurement information of each user terminal. Specific embodiments of the user location relationship and the cluster distribution are shown below, and the matrix of the user location relationship is as follows:
Riiif user i is a non-cluster head;
Riiif user i is a cluster head;
Rij1, i is not equal to j, and if user i and user j are adjacent users;
Rij0, i is not equal to j, and if user i and user j are not adjacent users;
Riji ≠ j, if user i is a cluster head and user j is an intra-cluster user.
And the eNodeB determines a cluster head according to the position relation and the cluster distribution condition of the user terminal, and allocates a cluster ID and cluster resource allocation (according to the possible size of the cluster) to the cluster head terminal. The cluster resource configuration comprises cluster common channel resources and cluster dedicated channel resources. The cluster common channel resource is occupied by each user terminal in the cluster in a competition mode, wherein the cluster head terminal has the highest priority. And the cluster special channel resources are distributed by the cluster head terminal according to the request of the user in the cluster. The pseudo code of an example of a specific cluster head determination method is as follows:
the device capability is provided and the number of adjacent users is large.
Suppose a UE1For users known to the eNodeB:
the cluster members are maintained above some specified threshold for some amount of time during cluster heads. And when the time of the number not higher than the threshold is overtime, the eNodeB informs the cluster head and withdraws the cluster resources.
Suppose a UEkIs a cluster head, num is a threshold of the minimum specified number of cluster members;
set timer act ive；
}
While(timer＝＝active){
set timer inactive；
break；
}
timer--；
if(timer<＝0{
the eNodeB informs the cluster head of failure and recovers cluster resources;
break；
}
in step 216, the eNodeB allocates a cluster ID and cluster channel resources to the cluster head terminal.
Step 217, the cluster head terminal broadcasts the user status message of the cluster head terminal at the specified frequency resource position.
In steps 218 and 219, the ue counts the ue status messages sent by other ues monitored in the specified time period. If the monitored signal intensity of other user terminals is greater than a certain threshold, the user is judged to be the adjacent user of the user, and the user identification of the adjacent user terminal is recorded.
If the other user terminals monitored by the user are cluster heads, and the signal quality of the cluster heads of the current user terminal which does not belong to any cluster or the cluster where the current user terminal is located is always lower than a certain specified threshold within the specified time, the user adds a new cluster, and updates the user state information.
Step 220, when the user terminal joins the cluster or updates the cluster, the user terminal immediately sends a user measurement message to the eNodeB, wherein the user measurement message includes the cluster head information of the user joining the cluster. The format and contents of the user measurement message are shown in table 2 below.
Table 2 table of contents information of user measurement message
Step 220, the user terminal joining the cluster sends two types of messages according to the requirement at the appointed cluster public channel resource according to the received cluster head user state message, wherein one type of message is a user cluster broadcast message.
Step 221, the cluster head terminal performs intra-cluster forwarding broadcasting on the received user cluster broadcasting message.
In step 222, the ue joining the cluster sends a device-to-device connection request, i.e. a D2D connection request, in the designated cluster common channel resource according to the received cluster head user status message, for performing device-to-device communication. And the cluster member terminal actively initiating the D2D connection request judges that the target user is the same cluster user according to the received user state message, and then sends a user D2D request to the cluster head terminal.
Step 223, 224, after receiving the user D2D request, the cluster head terminal sends D2D establishment indication to the user terminals of both sides of D2D, and the D2D establishment indication includes the cluster dedicated channel resource information.
Step 225, 226, the cluster member terminal actively initiating the D2D connection request performs channel measurement on the designated cluster dedicated channel resource, selects whether to establish D2D communication with the target user according to the channel interference level, and sends a confirmation message to the cluster head terminal.
And 227, the cluster head terminal updates the occupation situation of the dedicated channel resources in the cluster and the channel interference level according to the confirmation message.
In step 228, the cluster head terminal reports the cluster state message to the eNodeB according to a predetermined period, where the format and content of the cluster state message are shown in table 3 below:
table 3 table of contents information of cluster state message
Step 229, the eNodeB updates the available cluster resource list according to the received cluster resource occupation condition and the interfered level, allocates the available resources to different clusters according to the number of cluster heads, the possible cluster scale and the cluster resource occupation condition, and multiplexes the same available resources that are not interfered to different clusters that are far away according to the interfered level.
In the cellular user clustering communication method provided by the embodiment, the user terminals with low time delay and high reliability in the cell are divided into a plurality of user clusters according to positions, resources are distributed according to the clusters, the cluster heads provide cluster information aggregation broadcast and realize direct communication of the user terminals in the clusters, mutual discovery of adjacent users in the cellular network position and autonomous clustering, rapid broadcast of the cluster user information and direct communication from equipment to equipment can be realized, the requirements of services on transmission characteristics such as communication time delay and reliability are met, meanwhile, the resource utilization efficiency is improved, and the network performance is improved.
In one embodiment, as shown in fig. 3, the present invention provides a cellular user clustering communication system, which includes an eNodeB device 31 and user terminals, which can be classified into cluster head terminals and general user terminals, i.e. cluster member terminals, according to the device capabilities. The eNodeB device 31 includes: a base station receiving module 311, a base station transmitting module 312, a base station cluster management module 313 and a base station buffer module 314.
The base station cluster management module 313 establishes at least one cluster according to the position distribution relationship of the user terminal, determines a cluster head terminal and a cluster member terminal belonging to the cluster, and allocates a cluster ID and a cluster channel resource to the cluster head terminal. The base station transmitting module 312 notifies the cluster head terminal of the cluster ID and the cluster channel resource. The cluster head terminal 32 receives the request for establishing the D2D connection between the cluster member terminals 33, 34, and allocates cluster channel resources to the D2D connection, so that the cluster member terminals 33, 34 communicate with each other through the cluster channel resources.
The cluster channel resources include: cluster common channel resources and cluster dedicated channel resources. The cluster head terminal 32 allocates a cluster dedicated channel resource to the D2D connection so that the cluster member terminals 33, 34 communicate with each other through the cluster dedicated channel resource. The base station receiving module 311 receives a cluster state message periodically reported by the cluster head terminal 32, where the information carried by the cluster state message includes: cluster head user identification, cluster head adjacent user, cluster dedicated channel resource information, and the like.
The base station cluster management module 313 allocates and multiplexes cluster channel resources according to the occupation situation of the cluster dedicated channel resources and the channel interference level. The base station cluster management module 313 updates available cluster resources according to the cluster status messages reported by the cluster head terminals, allocates the available resources to different clusters according to the number of cluster heads, the possible scale of the clusters and the occupation condition of the cluster resources, and multiplexes the same available resources which are not interfered to different clusters which are far away according to the interference level.
The user terminal establishes connection with the eNodeB31 and sends a service message, and when judging that the user terminal has a requirement for establishing direct communication between terminals, the base station cluster management module 313 designates the user terminal for sending a user status message and monitoring frequency resources of other user terminals, and notifies the user terminal to monitor and broadcast the user status message at the designated resource according to the user service type. The base station sending module 312 sends a notification message to the ue, so that the ue sends a user status message using the specified frequency resource and listens for user status messages sent by other ues.
The base station receiving module 311 receives a user measurement message sent by a user terminal not belonging to any cluster according to a preset period, wherein the user measurement message comprises information of adjacent users; or receiving a user measurement message sent by a user terminal newly joining the cluster or a cluster member terminal of the updated cluster, wherein the user measurement message includes cluster head information of the newly joining cluster or the updated cluster and the like. The base station resource management module 313 counts the user location relationship and the cluster distribution according to the received user measurement message. The base station caching module 314 is configured to cache information such as a user location relationship, cluster distribution statistical information, and cluster resource usage.
In one embodiment, the user terminal 32 is a cluster head terminal, and the user terminals 33, 34 are general user terminals, i.e. cluster member terminals. The user terminal 32 includes: a first sending unit 321, a terminal cluster management module 322, a first receiving unit 323, a first measurement module 324, and a first caching module 325. The user terminal 33 includes: a second receiving unit 331, a second transmitting unit 332, a second measuring module 333, and a second buffering module 334. The user terminal 34 includes: a second receiving unit 341, a second transmitting unit 342, a second measuring module 343, and a second buffering module 344.
The functions of the modules in the user terminals 33 and 34 are the same, the terminal provided by the invention comprises all the functional modules of the user terminal 32 and the user terminal 33, and the functions of the cluster head terminal and the cluster member terminal are respectively realized by starting different required functional modules in use. The user terminals 32 and 33 will be explained below.
The first receiving unit 323 receives a request for establishing a D2D connection between cluster member terminals. The terminal cluster management module 322 allocates cluster channel resources to the D2D connection. The first transmitting unit 321 transmits the allocated cluster channel resource information to the cluster member terminals, and the cluster member terminals communicate with each other through the cluster channel resource.
The cluster channel resources include: cluster common channel resources and cluster dedicated channel resources. The terminal cluster management module 322 allocates cluster dedicated channel resources to the D2D connection so that cluster member terminals communicate with each other through the cluster dedicated channel resources. The first sending unit 321 broadcasts a user status message in a cluster, the second receiving unit 331 receives a user status message of a cluster head terminal, the second sending unit 332 sends a cluster member broadcast message using a cluster common channel resource, the first sending unit 321 broadcasts the cluster member broadcast message in the cluster, and information carried by the cluster member broadcast message includes: user identification, service type, service content, etc.
The second sending unit 332 sends a request for establishing a D2D connection to the cluster head terminal using the cluster common channel resource, where the information carried in the request for establishing a D2D connection includes: user identification, target user identification, request type, etc. The first sending unit 321 sends a D2D connection establishment indication to the cluster member terminals, where the D2D connection establishment indication carries the cluster dedicated channel resource information.
The second measurement module 333 detects the cluster dedicated channel resources and determines whether to establish the D2D connection based on the channel interference level of the cluster dedicated channel resources. The second sending unit 332 sends a D2D connection acknowledgement message carrying a channel interference level to the cluster head terminal, the first measuring module 324 updates the dedicated channel resource occupation and the channel interference level of the cluster according to the acknowledgement message, and the first sending unit 321 periodically reports a cluster state message to the eNodeB, where the information carried by the cluster state message includes: cluster head user identification, cluster head adjacent user, cluster dedicated channel resource information, and the like.
The second transmitting unit 332 establishes a connection with the eNodeB and transmits a traffic message, and transmits a user status message using frequency resources designated by the eNodeB. The second receiving unit 331 monitors user status messages sent by other user terminals using frequency resources specified by the eNodeB, where the information carried by the service message includes: source address, destination address, service type, service content, etc., and other user terminals include: cluster head terminal, cluster member terminal.
When it is determined that no other user terminal sends the user status message or the signal strength of the user status message sent by another user is lower than the preset first threshold, the second sending unit 332 uses the specified frequency resource to send the user status message, where the information carried by the user status message includes: user identification, cluster ID, cluster head identification, cluster common channel resource number, etc. When the monitored signal strength of the user status message sent by the other user terminal is greater than the preset second threshold, the second receiving unit 331 determines that the other user terminal is an adjacent user and records the user identifier of the adjacent user.
The second sending unit 332 sends the updated user status message after joining the cluster or performing the cluster update. When it is determined that the other ue sending the ue status message is a cluster head ue and the ue 33 does not belong to any cluster, the ue 33 joins the cluster where the cluster head ue is located. Or, the user terminal 33 is a cluster member terminal, and when it is determined that the other user terminals sending the user status message are cluster head terminals and the signal quality of the cluster head terminal of the cluster where the user terminal 33 is located is lower than the third threshold within the preset time duration, the user terminal 33 joins the new cluster where the cluster head terminal is located.
When the ue 33 does not belong to any cluster, the second sending unit 332 sends a user measurement message to the eNodeB according to a preset period, where the user measurement message includes information of an adjacent user; or, when the user terminal 33 newly joins the cluster or updates the cluster, immediately sending a user measurement message to the eNodeB, where the user measurement message includes cluster head information of the newly joined cluster or updated cluster.
The second buffer module 334 buffers information of each neighboring ue, cluster information, allocated cluster dedicated channel measurement information, etc. discovered by the ue 33. The first buffer module 325 may also buffer cluster information and intra-cluster dedicated channel resource occupancy and channel interference level information.
The cellular user clustering communication method, system, eNodeB and terminal provided by the above embodiments, for the communication requirements of low delay, regionalization of application, wide range of movement and high reliability existing in the new mobile internet application such as car networking, by dividing the user terminals of low delay, high reliability application in the cell into a plurality of user clusters according to the location, allocating resources according to the clusters, providing information aggregation broadcast in the clusters by the cluster head and realizing direct communication of users in the clusters, the mutual discovery and autonomous clustering of nearby users in the cellular network location, fast broadcast of user information in the clusters and direct communication from device to device can be realized, the problem of poor reliability of user communication in the transmission delay high and weak coverage area generated by the fact that the existing cellular network needs the eNodeB to complete access and data forwarding is solved, and the requirements of service on transmission characteristics such as communication delay, reliability and the like are satisfied, and simultaneously, the resource utilization efficiency is improved, improving network performance.
The method and system of the present invention may be implemented in a number of ways. For example, the methods and systems of the present invention may be implemented in software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustrative purposes only, and the steps of the method of the present invention are not limited to the order specifically described above unless specifically indicated otherwise. Furthermore, in some embodiments, the present invention may also be embodied as a program recorded in a recording medium, the program including machine-readable instructions for implementing a method according to the present invention. Thus, the present invention also covers a recording medium storing a program for executing the method according to the present invention.
The description of the present invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to practitioners skilled in this art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.
Claims (19)
1. A method for cellular user clustered communication, comprising:
the eNodeB establishes at least one cluster according to the position distribution relation of the user terminals, and determines a cluster head terminal and a cluster member terminal which belong to the cluster;
the eNodeB allocates cluster IDs and cluster channel resources to the cluster head terminals;
the cluster head terminal broadcasts a user state message in the cluster; after receiving the user state information of the cluster head terminal, the cluster member terminal sends cluster member broadcast information by using cluster public channel resources;
the cluster head terminal broadcasts the cluster member broadcast message in the cluster; wherein, the information carried by the cluster member broadcast message includes: user identification, service type and service content;
the cluster head terminal receives a request for establishing D2D connection between the cluster member terminals, and allocates the cluster channel resources to the D2D connection, so that the cluster member terminals communicate through the cluster channel resources; wherein the cluster channel resources include: cluster common channel resources and cluster dedicated channel resources;
the cluster head terminal allocates the cluster dedicated channel resource to the D2D connection, so that the cluster member terminals communicate with each other through the cluster dedicated channel resource;
the requesting cluster member terminal connected with the D2D detects the cluster dedicated channel resource; the requesting cluster member terminal determines whether to establish the D2D connection based on the channel interference level of the cluster dedicated channel resource, and sends a D2D connection confirmation message to the cluster head terminal;
the cluster head terminal updates the resource occupation condition and the channel interference level of the cluster dedicated channel according to the confirmation message, and periodically reports a cluster state message, wherein the information carried by the cluster state message comprises: cluster head user identification, cluster head adjacent user and cluster dedicated channel resource information;
and the eNodeB allocates and multiplexes cluster channel resources according to the occupation situation of the cluster dedicated channel resources and the channel interference level.
2. The method of claim 1, wherein the cluster head terminal receiving the request to establish the D2D connection between the cluster member terminals, allocating the cluster channel resources to the D2D connection comprises:
the cluster member terminal sends the request for establishing the D2D connection to the cluster head terminal by using the cluster common channel resource; wherein, the information carried by the request for establishing the D2D connection includes: user identification, target user identification and request type;
the cluster head terminal sends a D2D connection establishment instruction to the cluster member terminal; wherein, the D2D connection establishment indication carries cluster dedicated channel resource information.
3. The method of claim 1, comprising:
the user terminal establishes connection with the eNodeB and sends a service message; wherein, the information carried by the service message includes: source address, destination address, service type, service content:
when the user terminal is judged to have the requirement of establishing direct communication between terminals based on the service message, the eNodeB sends a notification message to the user terminal so that the user terminal sends a user state message by using a specified frequency resource and monitors the user state messages sent by other user terminals;
wherein the other user terminals include: cluster head terminal, cluster member terminal.
4. The method of claim 3, wherein the user terminal transmitting user status messages using the designated frequency resources and listening for user status messages transmitted by other user terminals comprises:
when the user terminal judges that no other user terminal sends the user state information or the signal intensity of the user state information sent by other users is lower than a preset first threshold, the user state information is sent by using the appointed frequency resource;
wherein, the information carried by the user status message includes: user identification, cluster ID, cluster head identification and cluster public channel resource number.
5. The method of claim 4, comprising:
and when the user terminal judges that the monitored signal intensity of the user state message sent by other user terminals is greater than a preset second threshold, judging that the other user terminals are adjacent users and recording the user identification of the adjacent users.
6. The method of claim 5, comprising:
and when the user terminal judges that other user terminals sending the user state information are the cluster head terminal and the user terminal does not belong to any cluster, the user terminal joins the cluster where the cluster head terminal is located and sends the updated user state information.
7. The method of claim 6, comprising:
the cluster member terminal uses the appointed frequency resource to send the user state information and monitors the user state information sent by other user terminals;
and when the cluster member terminal judges that other user terminals sending the user state information are the cluster head terminal and the signal quality of the cluster head terminal of the cluster where the cluster member terminal is located is lower than a third threshold within a preset time length, the cluster member terminal is added into a new cluster where the cluster head terminal is located and sends the updated user state information.
8. The method of claim 7, comprising:
when the user terminal does not belong to any cluster, the user terminal sends a user measurement message to the eNodeB according to a preset period; the user measurement message comprises information of adjacent users;
when the user terminal newly joins in a cluster or the cluster member terminal updates the cluster, the user terminal or the cluster member terminal immediately sends a user measurement message to an eNodeB, wherein the user measurement message comprises cluster head information of the newly joined cluster or the updated cluster;
and the eNodeB counts the user position relation and the cluster distribution situation according to the received user measurement message.
9. An eNodeB, comprising:
the base station cluster management module is used for establishing at least one cluster according to the position distribution relation of the user terminal, determining a cluster head terminal and a cluster member terminal belonging to the cluster, and distributing a cluster ID and cluster channel resources to the cluster head terminal;
a base station sending module, configured to notify the cluster head terminal of the cluster ID and the cluster channel resource;
wherein the cluster head terminal broadcasts a user status message in the cluster; after receiving the user state information of the cluster head terminal, the cluster member terminal sends cluster member broadcast information by using cluster public channel resources; the cluster head terminal broadcasts the cluster member broadcast message in the cluster; the information carried by the cluster member broadcast message includes: user identification, service type and service content;
the cluster head terminal receives a request for establishing D2D connection between the cluster member terminals, and allocates the cluster channel resources to the D2D connection, so that the cluster member terminals communicate through the cluster channel resources; wherein the cluster channel resources include: cluster common channel resources and cluster dedicated channel resources;
the cluster head terminal allocates the cluster dedicated channel resource to the D2D connection, and the requester cluster member terminal connected with the D2D detects the cluster dedicated channel resource; the requesting cluster member terminal determines whether to establish the D2D connection based on the channel interference level of the cluster dedicated channel resource, and sends a D2D connection confirmation message to the cluster head terminal;
the eNodeB further comprises:
a base station receiving module, configured to receive a cluster state message periodically reported by the cluster head terminal, where information carried by the cluster state message includes: cluster head user identification, cluster head adjacent user and cluster dedicated channel resource information;
and the base station cluster management module is also used for allocating and multiplexing cluster channel resources according to the occupation condition of the cluster dedicated channel resources and the channel interference level.
10. The eNodeB of claim 9, wherein a user terminal establishes a connection with the eNodeB and transmits traffic messages;
the base station cluster management module is also used for appointing the user terminal to be used for sending user state information and monitoring frequency resources of other user terminals when judging that the user terminal has the requirement of establishing direct communication between terminals;
the base station sending module is further configured to send a notification message to the user terminal, so that the user terminal sends a user status message using a specified frequency resource and monitors user status messages sent by other user terminals.
11. The eNodeB of claim 9, wherein:
the base station receiving module is further configured to receive a user measurement message sent by the user terminal that does not belong to any cluster according to a preset period, where the user measurement message includes information of an adjacent user; or receiving a user measurement message sent by the user terminal newly joining the cluster or the cluster member terminal of the updated cluster, wherein the user measurement message comprises cluster head information of the newly joining cluster or the updated cluster;
and the base station cluster management module is also used for counting the user position relation and the cluster distribution condition according to the received user measurement message.
12. A terminal, comprising:
a first receiving unit, configured to receive a request for establishing a D2D connection between cluster member terminals; the eNodeB establishes at least one cluster according to the position distribution relation of the user terminals, and determines a cluster head terminal and a cluster member terminal belonging to the cluster; the eNodeB allocates cluster IDs and cluster channel resources to the cluster head terminals;
a terminal cluster management module, configured to allocate cluster channel resources to the D2D connection;
a first sending unit, configured to send the allocated cluster channel resource information to the cluster member terminals; wherein, the cluster member terminals communicate with each other through the cluster channel resources; the cluster channel resources include: cluster common channel resources and cluster dedicated channel resources;
the terminal cluster management module is configured to allocate the cluster dedicated channel resource to the D2D connection, so that the cluster member terminals communicate with each other through the cluster dedicated channel resource;
the first sending unit is further configured to broadcast a user status message within the cluster;
the terminal further comprises:
a second receiving unit, configured to receive a user status message of the cluster head terminal;
a second transmitting unit for transmitting a cluster member broadcast message using the cluster common channel resource;
wherein the first sending unit is further configured to broadcast the cluster member broadcast message within the cluster; the information carried by the cluster member broadcast message includes: user identification, service type and service content;
a second measurement module, configured to detect the cluster dedicated channel resource and determine whether to establish the D2D connection based on a channel interference level of the cluster dedicated channel resource;
wherein, the second sending unit sends a D2D connection confirmation message carrying the channel interference level to the cluster head terminal;
a first measurement module, configured to update the resource occupation status and the channel interference level of the cluster dedicated channel according to the acknowledgement message; the first sending unit periodically reports a cluster state message to the eNodeB, where the information carried by the cluster state message includes: cluster head user identification, cluster head adjacent user and cluster dedicated channel resource information.
13. The terminal of claim 12, wherein:
the second sending unit is further configured to send the request for establishing the D2D connection to the cluster head terminal using the cluster common channel resource; wherein, the information carried by the request for establishing the D2D connection includes: user identification, target user identification and request type;
the first sending unit is further configured to send a D2D connection establishment instruction to the cluster member terminal; wherein, the D2D connection establishment indication carries cluster dedicated channel resource information.
14. The terminal of claim 12, comprising:
the second sending unit is further configured to establish a connection with the eNodeB and send a service message, and send a user status message using a frequency resource specified by the eNodeB;
the second receiving unit is further configured to monitor a user status message sent by another ue using the frequency resource specified by the eNodeB;
wherein, the information carried by the service message includes: source address, destination address, service type, service content; the other user terminals include: cluster head terminal, cluster member terminal.
15. The terminal of claim 14, wherein:
the second sending unit is further configured to send the user status message using the specified frequency resource when it is determined that no other user terminal sends the user status message or the signal strength of the user status message sent by the other user is lower than a preset first threshold;
wherein, the information carried by the user status message includes: user identification, cluster ID, cluster head identification and cluster public channel resource number.
16. The terminal of claim 14, wherein:
and the second receiving unit is further configured to determine that the other user terminal is an adjacent user and record the user identifier of the adjacent user when it is determined that the monitored signal strength of the user status message sent by the other user terminal is greater than a preset second threshold.
17. The terminal of claim 16, wherein:
the second sending unit is further configured to send the updated user status message after joining the cluster or updating the cluster;
when other user terminals sending the user state information are judged to be the cluster head terminals and the terminal does not belong to any cluster, the terminal is added into the cluster where the cluster head terminal is located; or, the terminal is a cluster member terminal, and when it is determined that other user terminals sending the user state message are the cluster head terminal and the signal quality of the cluster head terminal of the cluster where the terminal is located is lower than a third threshold within a preset time period, the terminal joins a new cluster where the cluster head terminal is located.
18. The terminal of claim 17, wherein:
the second sending unit is further configured to send a user measurement message to the eNodeB according to a preset period when the terminal does not belong to any cluster; wherein, the user measurement message contains information of adjacent users; or, when the terminal newly joins the cluster or updates the cluster, immediately sending a user measurement message to the eNodeB, wherein the user measurement message includes cluster head information of the newly joined cluster or the updated cluster.
19. A cellular user clustering communication system, comprising:
the eNodeB according to any of claims 9 to 11, the terminal according to any of claims 12 to 18.
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| CN111106865B (en) | 2018-10-25 | 2021-12-14 | 华为技术有限公司 | Communication method, device and system based on satellite network |
| CN113016218A (en) * | 2019-01-04 | 2021-06-22 | 株式会社Ntt都科摩 | Wireless communication method and device |
| CN111436121B (en) * | 2019-01-11 | 2021-11-19 | 华为技术有限公司 | Method and device for configuring sidelink resources |
| CN111586675B (en) * | 2019-02-15 | 2022-04-12 | 华为技术有限公司 | Terminal device identification method and device |
| CN111601273B (en) * | 2019-02-20 | 2022-12-13 | 华为技术有限公司 | Scheduling method, terminal device and network device for sidelink communication |
| CN110063841A (en) * | 2019-03-27 | 2019-07-30 | 苏州威斯德医疗科技有限公司 | A kind of excreta existence alarm method and alarm system |
| CN111405670B (en) * | 2020-03-25 | 2023-08-15 | 中移雄安信息通信科技有限公司 | Resource allocation method, device, equipment and computer storage medium |
| CN113747446A (en) * | 2020-05-28 | 2021-12-03 | 华为技术有限公司 | Communication method and device |
| CN114731606A (en) * | 2020-11-03 | 2022-07-08 | 北京小米移动软件有限公司 | Delay determination method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102595314A (en) * | 2012-02-14 | 2012-07-18 | 北京邮电大学 | Position-information-based device-to-device (D2D) clustering multicast method |
| CN103238306A (en) * | 2010-12-03 | 2013-08-07 | 诺基亚公司 | Device to device cluster enhancement to support data transmission from/to multiple devices |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102647246B (en) * | 2011-02-22 | 2014-08-13 | 上海无线通信研究中心 | D2D (Dimension To Dimension) pair/D2D cluster communication building method |
| US20140094183A1 (en) * | 2011-05-25 | 2014-04-03 | Broadcom Corportion | Resource allocation for d2d communication |
-
2016
- 2016-08-12 CN CN201610663017.4A patent/CN107734590B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103238306A (en) * | 2010-12-03 | 2013-08-07 | 诺基亚公司 | Device to device cluster enhancement to support data transmission from/to multiple devices |
| CN102595314A (en) * | 2012-02-14 | 2012-07-18 | 北京邮电大学 | Position-information-based device-to-device (D2D) clustering multicast method |
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