CN112203285B - Multi-cell joint cooperative transmission control method, device and system - Google Patents
Multi-cell joint cooperative transmission control method, device and system Download PDFInfo
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- CN112203285B CN112203285B CN202010927306.7A CN202010927306A CN112203285B CN 112203285 B CN112203285 B CN 112203285B CN 202010927306 A CN202010927306 A CN 202010927306A CN 112203285 B CN112203285 B CN 112203285B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/04—Traffic adaptive resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
- H04W16/10—Dynamic resource partitioning
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0226—Traffic management, e.g. flow control or congestion control based on location or mobility
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/04—Reselecting a cell layer in multi-layered cells
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
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Abstract
The invention discloses a multi-cell joint cooperative transmission control method, a device and a system, which comprise the following steps: the method comprises the steps that a main transmission node receives a first space-time track sent by a terminal in a first time period, determines a second space-time track of the terminal in a coverage area of the main transmission node, and predicts a third space-time track of the terminal in a second time period according to a preset minimum geographic granularity; matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell combined resource distribution table; and the cooperative transmission node analyzes the multi-cell joint resource allocation table, selects interfaces corresponding to the cells for connection, updates information resources according to time reaching granularity, and sends connection reconfiguration information. The invention has the advantages that: the realization is simple, and the data transmission efficiency of the user when switching among multiple cells is improved.
Description
Technical Field
The invention belongs to the technical field of 5G mobile communication, and particularly relates to a multi-cell joint cooperative transmission control method, device and system.
Background
Currently, ultra-Dense networking (UDN) is one of the key technologies in 5G, and a large number of small base stations are deployed in a Dense range to improve data transmission rate and reduce delay. Then, in 5G (Fifth Generation) and future mobile communication technologies, high frequency band is used for wireless communication, and when the position of the terminal changes under the condition of dense networking, the terminal needs to be frequently switched between different small base stations, so that extra signaling overhead is brought. Therefore, UDN presents a major challenge for mobility. To solve this problem, 5G proposes a concept of a virtual cell centered on the terminal: in the moving process of the terminal, a virtual cell is formed by taking the terminal as the center, wherein the virtual cell consists of a main transmission node (master transmission point, master TP) and a plurality of service transmission nodes (slave transmission point, slave TP), the master TP is responsible for all high-level control signaling, allocates wireless resources and schedules data to transmit and receive, and the slave TP performs cooperative transmission according to the indication of the master TP without resource allocation.
In the prior art, how to dynamically allocate the joint resources among a plurality of cells according to the position change of the terminal is not solved.
Disclosure of Invention
The invention aims to provide a multi-cell joint cooperative transmission control method, which solves the problem of how to dynamically allocate joint resources among a plurality of cells according to the position change of a terminal.
In view of the above, the present invention provides a multi-cell joint cooperative transmission control method, which is characterized by comprising:
the method comprises the steps that a main transmission node receives a first space-time track sent by a terminal in a first time period, determines a second space-time track of the terminal in a coverage area of the main transmission node, and predicts a third space-time track of the terminal in a second time period according to a preset minimum geographic granularity;
matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell combined resource distribution table;
and the cooperative transmission node analyzes the multi-cell joint resource allocation table, selects interfaces corresponding to the cells for connection, updates information resources according to time reaching granularity, and sends connection reconfiguration information.
Further, the main transmission node receives a first space-time track sent by a terminal in a first time period, and determines a second space-time track of the terminal in a coverage area of the main transmission node, including:
the method comprises the steps that a main transmission node reports a space-time track request to a network server, receives a space-time track response, obtains a first space-time track of a terminal, calculates and collects positioning signals of the terminal, and calculates a second space-time track of the terminal in the coverage area.
Further, the matching the geographic location information of the neighboring cells of the coverage area of the third space-time trajectory and the main transmission node includes:
and the main transmission node matches the geographic position of the adjacent cells with the third space-time track, calculates the matching weight of the adjacent cells, compares the matching weight with a preset matching threshold, and selects K adjacent cells, wherein 0< = K < = collaborative number.
Further, the method further comprises the following steps: and the main transmission node sends a time advance response through the interfaces of the K adjacent cells, and acquires the time advance of the K adjacent cells.
Further, the method further comprises the following steps: the master transmission node informs the terminal of the time advance of K neighboring cells and K neighboring cell IDs.
A further object of the present invention is to provide a multi-cell joint cooperative transmission control apparatus, comprising:
the transmission determining unit is used for receiving a first space-time track sent by a terminal in a first time period by a main transmission node, determining a second space-time track of the terminal in a coverage area of the main transmission node, and predicting a third space-time track of the terminal in a second time period according to a preset minimum geographic granularity;
the matching control unit is used for matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell joint resource distribution table;
and the selection transmitting unit is used for analyzing the multi-cell joint resource allocation table in cooperation with the transmission node, selecting an interface corresponding to the cell for connection, updating information resources according to the time reaching granularity, and transmitting connection reconfiguration information.
Further, the selection transmitting unit includes:
the collaborative management module is used for selecting collaborative transmission nodes, updating a collaborative list, maintaining a channel indication list of a user, counting track information of the user, receiving user data transmission state information and collecting measurement information reported by the user;
And the cooperative transmission module is used for sending/receiving a cooperative transmission request, sending/receiving a cooperative transmission response and sending/receiving a cooperative list.
Further, the transmission determining unit includes:
the data transmission module is used for generating user data and processing the received user data;
and the data scheduling module is used for collecting the process of user data transmission, providing resource allocation for users and scheduling the data transmission of the users.
A further object of the present invention is to provide a multi-cell joint cooperative transmission control system, which includes: a base station corresponding to at least one cooperation area and at least one communication terminal, the base station comprising:
the transmission determining unit is used for receiving a first space-time track sent by the communication terminal in a first time period by the main transmission node, determining a second space-time track of the communication terminal in the coverage area of the main transmission node, and predicting a third space-time track of the communication terminal in a second time period according to a preset minimum geographic granularity;
the matching control unit is used for matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell joint resource distribution table;
And the selection transmitting unit is used for analyzing the multi-cell joint resource allocation table in cooperation with the transmission node, selecting an interface corresponding to the cell for connection, updating information resources according to the time reaching granularity, and transmitting connection reconfiguration information.
Further, the main transmission node collects track information and user state information of a user, selects one or more cooperative transmission nodes, constructs a cooperative list, sends a cooperative transmission request to the cooperative transmission nodes in the cooperative list, updates the state of the cooperative transmission nodes in the cooperative list according to a received cooperative transmission request response, indicates the activated cooperative transmission nodes to perform data transmission with the user, adds or deletes the cooperative transmission nodes according to the track information of the user, selects a target transmission node, and sends the updated cooperative list to the cooperative transmission nodes;
the cooperative transmission node receives a cooperative transmission request, feeds back a cooperative transmission request response, and when the cooperative transmission request response is agreeing, indicates that the cooperative transmission node agrees to perform data service on the user and reserves resources according to a main resource allocation; when a cooperative transmission request response is disagreeable, the cooperative transmission node does not perform data service on the user.
The invention realizes the following remarkable beneficial effects:
the realization is simple, including: the method comprises the steps that a main transmission node receives a first space-time track sent by a terminal in a first time period, determines a second space-time track of the terminal in a coverage area of the main transmission node, and predicts a third space-time track of the terminal in a second time period according to a preset minimum geographic granularity; matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell combined resource distribution table; and the cooperative transmission node analyzes the multi-cell joint resource allocation table, selects an interface corresponding to the cell for connection, updates information resources according to time reaching granularity, and sends connection reconfiguration information, thereby improving the data transmission efficiency of a user when switching between multiple cells.
Drawings
Fig. 1 is a flowchart of a multi-cell joint cooperative transmission control method of the present invention;
fig. 2 is a schematic diagram of a system for terminal location adaptive multi-cell joint resource allocation according to an embodiment of the present invention;
Fig. 3 is a schematic diagram of a terminal location adaptive multi-cell joint resource allocation method according to an embodiment of the present invention;
fig. 4 is a signaling flow diagram of a method for allocating terminal location adaptive multi-cell joint resources according to an embodiment of the present invention;
fig. 5 illustrates a multi-cell joint resource allocation representation intent provided by one embodiment of the present invention.
Detailed Description
The advantages and features of the present invention will become more fully apparent from the following description and appended claims, taken in conjunction with the accompanying drawings and detailed description. It should be noted that the drawings are in a very simplified form and are adapted to non-precise proportions, merely for the purpose of facilitating and clearly aiding in the description of embodiments of the invention.
It should be noted that, in order to clearly illustrate the present invention, various embodiments of the present invention are specifically illustrated by the present embodiments to further illustrate different implementations of the present invention, where the various embodiments are listed and not exhaustive. Furthermore, for simplicity of explanation, what has been mentioned in the previous embodiment is often omitted in the latter embodiment, and therefore, what has not been mentioned in the latter embodiment can be referred to the previous embodiment accordingly.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof have been shown by way of example in the drawings and are herein described in detail. It should be understood that the invention is not to be limited to the particular embodiments disclosed, but on the contrary, the invention is to cover all modifications, equivalents, and alternatives falling within the spirit or scope of the invention as defined by the appended claims. The same element numbers may be used throughout the drawings to refer to the same or like parts.
Referring to fig. 1, the present invention provides a multi-cell joint cooperative transmission control method, which includes:
step S101, a main transmission node receives a first space-time track sent by a terminal in a first time period, determines a second space-time track of the terminal in a coverage area of the main transmission node, and predicts a third space-time track of the terminal in a second time period according to a preset minimum geographic granularity;
step S102, matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell joint resource distribution table;
And step S103, the cooperative transmission node analyzes the multi-cell joint resource allocation table, selects interfaces corresponding to the cells for connection, updates information resources according to time reaching granularity, and sends connection reconfiguration information.
In one embodiment, the method for determining the second space-time track of the terminal in the coverage area of the main transmission node by the main transmission node receiving the first space-time track of the terminal in the first time period includes:
the method comprises the steps that a main transmission node reports a space-time track request to a network server, receives a space-time track response, obtains a first space-time track of a terminal, calculates and collects positioning signals of the terminal, and calculates a second space-time track of the terminal in the coverage area.
In one embodiment, said matching the geographical location information of cells adjacent to the coverage area of the third space-time trajectory and the primary transmission node comprises:
and the main transmission node matches the geographic position of the adjacent cells with the third space-time track, calculates the matching weight of the adjacent cells, compares the matching weight with a preset matching threshold, and selects K adjacent cells, wherein 0< = K < = collaborative number.
In one embodiment, further comprising: and the main transmission node sends a time advance response through the interfaces of the K adjacent cells, and acquires the time advance of the K adjacent cells.
In one embodiment, further comprising: the master transmission node informs the terminal of the time advance of K neighboring cells and K neighboring cell IDs.
A further object of the present invention is to provide a multi-cell joint cooperative transmission control apparatus, comprising:
the transmission determining unit is used for receiving a first space-time track sent by a terminal in a first time period by a main transmission node, determining a second space-time track of the terminal in a coverage area of the main transmission node, and predicting a third space-time track of the terminal in a second time period according to a preset minimum geographic granularity;
the matching control unit is used for matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell joint resource distribution table;
and the selection transmitting unit is used for analyzing the multi-cell joint resource allocation table in cooperation with the transmission node, selecting an interface corresponding to the cell for connection, updating information resources according to the time reaching granularity, and transmitting connection reconfiguration information.
In one embodiment, the selection transmitting unit includes:
the collaborative management module is used for selecting collaborative transmission nodes, updating a collaborative list, maintaining a channel indication list of a user, counting track information of the user, receiving user data transmission state information and collecting measurement information reported by the user;
and the cooperative transmission module is used for sending/receiving a cooperative transmission request, sending/receiving a cooperative transmission response and sending/receiving a cooperative list.
In one embodiment, the transmission determining unit includes:
the data transmission module is used for generating user data and processing the received user data;
and the data scheduling module is used for collecting the process of user data transmission, providing resource allocation for users and scheduling the data transmission of the users.
A further object of the present invention is to provide a multi-cell joint cooperative transmission control system, which includes: a base station corresponding to at least one cooperation area and at least one communication terminal, the base station comprising:
the transmission determining unit is used for receiving a first space-time track sent by the communication terminal in a first time period by the main transmission node, determining a second space-time track of the communication terminal in the coverage area of the main transmission node, and predicting a third space-time track of the communication terminal in a second time period according to a preset minimum geographic granularity;
The matching control unit is used for matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell joint resource distribution table;
and the selection transmitting unit is used for analyzing the multi-cell joint resource allocation table in cooperation with the transmission node, selecting an interface corresponding to the cell for connection, updating information resources according to the time reaching granularity, and transmitting connection reconfiguration information.
In one embodiment, the master transmission node collects track information and user state information of a user, selects one or more cooperative transmission nodes, constructs a cooperative list, sends a cooperative transmission request to the cooperative transmission nodes in the cooperative list, updates the state of the cooperative transmission nodes in the cooperative list according to a received cooperative transmission request response, indicates the activated cooperative transmission nodes to perform data transmission with the user, adds or deletes the cooperative transmission nodes according to the track information of the user, selects a target transmission node, and updates the cooperative list to be sent to the cooperative transmission nodes;
The cooperative transmission node receives a cooperative transmission request, feeds back a cooperative transmission request response, and when the cooperative transmission request response is agreeing, indicates that the cooperative transmission node agrees to perform data service on the user and reserves resources according to a main resource allocation; when a cooperative transmission request response is disagreeable, the cooperative transmission node does not perform data service on the user.
As a specific embodiment, a Master Point (MP), a Target Point (TP), and a cooperative or Secondary Point (SP) are named in the present invention. In the present invention, the "cell" and the "node" are not distinguished, and are equivalent.
As a specific embodiment, a method for allocating multi-cell joint resources by adaptive terminal location includes:
step 1: and the MP reports a space-time track request to a network server, receives a space-time track response and acquires a first space-time track of the terminal. And the MP calculates and collects the positioning signals of the terminal and calculates a second space-time track of the terminal in a coverage area.
Step 2: and the MP predicts a third space-time track of the terminal according to the preset minimum geographic granularity according to the first space-time track and the second space-time track of the terminal.
Step 3: and matching the geographic position of the adjacent cell with the third space-time track by the MP, calculating the matching weight (match weight factor, MWF) of the adjacent cell, comparing the matching weight with a preset matching threshold, and selecting K adjacent cells, wherein 0< = K < = collaborative number, and the K adjacent cells are named as SP.
Step 4: the MP sends a time advance response through an interface with the K selected neighbor cells and acquires the cell time advance of the K selected SP; the one MP informs the one terminal of the time advance of K SPs and the cell IDs of the K SPs.
Step 5: and the one terminal reports MP channel measurement information to the one MP, and the one MP calculates the first resource of the one terminal. And the terminal reports the K SP channel measurement information to the MP.
Step 6: the MP constructs a multi-cell joint resource allocation table of the terminal according to the arrival sequence of time granularity based on a third space-time track, the weight and the time advance of the adjacent cells, SP channel measurement information and the time advance of each cell, and sends a cooperative resource allocation command to a plurality of SPs in the multi-cell joint resource allocation table.
Step 7: and the SP analyzes the multi-cell resource allocation table of the terminal, updates the first resource according to the time arrival granularity based on the first resource, and sends RRC connection reconfiguration information after the SP is connected with the terminal.
In step 1 of the present invention, the one network server is an MME.
In step 1 of the present invention, the one space-time trajectory request contains the ID of the one terminal, and one request message.
In step 1 of the present invention, the first space-time trajectory contains geographic location information of the one terminal over time during a first time period.
In step 1 of the present invention, the first space-time trajectory includes a law that the geographic location of the one terminal changes with time in a first period of time.
In step 1 of the present invention, the second space-time track is geographical location information of the one terminal in the coverage area of the one MP.
In step 2 of the present invention, the minimum geographic granularity is one of a network grid.
The network grid is a two-dimensional map of cells and terminals within an area.
In step 2 of the present invention, the third space-time trajectory is a change in geographic position of the one terminal in the second time period.
In step 5 of the present invention, the MP channel measurement information reported by the one terminal includes PMI/CQI/RI information between the one terminal and the one MP, and neighbor cell measurement information measured by the one terminal.
In step 5 of the present invention, the one SP channel measurement information is measured based on the broadcast signal of the one SP. Further, the broadcast signal of the one SP includes a synchronization reference signal, system information.
In step 5 of the present invention, the features of the first resource include: the first resource includes the number of RBs to be allocated, an RB position, an RI number, a starting subframe of data scheduling, and a scheduling duration.
In step 5 of the present invention, the features of the first resource include: the first resource comprises service scheduling information, service buffering rate and throughput.
In step 6 of the present invention, the characteristics of the multi-cell joint resource allocation table of the one terminal include: the multi-cell joint resource allocation table of the terminal orders the cells according to the time granularity reaching order, and the MWF is used as a first criterion, and the cells are specifically expressed as a two-dimensional parameter (matching weight, cell ID). Further, at each time granularity, there is one geographic granularity, and there are one or more cell IDs. Further, the cell ID may correspond to the one MP or may correspond to a neighboring cell (i.e., SP).
The one time granularity corresponding to a plurality of cell IDs indicates that there are a plurality of cells around one geographic granularity.
In step 6 of the present invention, the features of the one cooperative resource allocation command include: the one cooperative resource allocation command includes a first resource of the one terminal and a multi-cell joint resource allocation table of the one terminal.
As a specific embodiment, the present invention provides a multi-cell joint resource allocation apparatus with multi-terminal location adaptation, including:
the positioning signal collection module is arranged to receive positioning signals sent by the terminal;
the measurement information collection module is used for receiving channel measurement information sent by the terminal and channel measurement information of the adjacent node;
the upper network interface module is used for sending a space-time track request to a network server and receiving a space-time track response sent by the network server;
the adjacent node interface module is used for sending a time advance request to an adjacent cell, receiving a time advance response of the adjacent cell and sending a multi-cell joint resource allocation table to the adjacent cell;
the space-time track measuring and calculating module is arranged for analyzing the first space-time track, calculating the second space-time track and predicting the third space-time track;
A cooperation management module configured to select SP and generate multi-cell joint resource allocation table
And the resource management module is used for calculating the first resource.
As a specific embodiment, the invention provides a multi-cell joint resource allocation system with self-adaptive terminal position, which comprises a network server, an MP, a plurality of SPs and a terminal;
the network server receives a space-time track request from an MP, sends a space-time track response to the MP, and provides a first space-time track of the terminal;
the MP collects the positioning signal of the terminal, calculates the second space-time track of the terminal and predicts the third space-time track of the terminal;
the one MP selects K SPs based on the third space-time trajectory. The MP sends time advance requests to K SPs and receives time advance responses of the SPs;
the MP collects MP channel measurement information reported by the terminal and calculates a first resource of the terminal;
the MP collects SP channel measurement reported by the channel and obtains a multi-cell joint resource allocation table of the terminal according to the time granularity reaching order based on a third space-time track;
The SP receives the time advance request and feeds back a time advance response; the SP receives a multi-cell joint resource allocation table of the terminal; and the SP receives the terminal, updates the first resource and sends an RRC connection reconfiguration message.
The terminal measures MP channels, measures SP signals, and reports MP channel measurement and SP channel measurement; the one terminal transmits a positioning signal.
As a specific embodiment, the method for allocating multi-cell joint resources with adaptive terminal location according to the present invention includes:
step 1: and the MP reports a space-time track request to a network server, receives a space-time track response and acquires a first space-time track of the terminal. And the MP calculates and collects the positioning signals of the terminal and calculates a second space-time track of the terminal in a coverage area.
Step 2: and the MP predicts a third space-time track of the terminal according to the preset minimum geographic granularity according to the first space-time track and the second space-time track of the terminal.
Step 3: and matching the geographic position of the adjacent cell with the third space-time track by the MP, calculating the matching weight (match weight factor, MWF) of the adjacent cell, comparing the matching weight with a preset matching threshold, and selecting K adjacent cells, wherein 0< = K < = collaborative number, and the K adjacent cells are named as SP.
Step 4: the MP sends a time advance response through an interface with the K selected neighbor cells and acquires the cell time advance of the K selected SP; the one MP informs the one terminal of the time advance of K SPs and the cell IDs of the K SPs.
Step 5: and the one terminal reports MP channel measurement information to the one MP, and the one MP calculates the first resource of the one terminal. And the terminal reports the K SP channel measurement information to the MP.
Step 6: the MP constructs a multi-cell joint resource allocation table of the terminal according to the arrival sequence of time granularity based on a third space-time track, the weight and the time advance of the adjacent cells, SP channel measurement information and the time advance of each cell, and sends a cooperative resource allocation command to a plurality of SPs in the multi-cell joint resource allocation table.
Step 7: and the SP analyzes the multi-cell resource allocation table of the terminal, updates the first resource according to the time arrival granularity based on the first resource, and sends RRC connection reconfiguration information after the SP is connected with the terminal.
In step 1 of the present invention, the one network server is an MME.
In step 1 of the present invention, the one space-time trajectory request contains the ID of the one terminal, and one request message.
In step 1 of the present invention, the first space-time trajectory contains geographic location information of the one terminal over time during a first time period.
In step 1 of the present invention, the first space-time trajectory includes a law that the geographic location of the one terminal changes with time in a first period of time.
In step 1 of the present invention, the second space-time track is geographical location information of the one terminal in the coverage area of the one MP.
In step 2 of the present invention, the minimum geographic granularity is one of a network grid.
The network grid is a two-dimensional map of cells and terminals within an area.
In step 2 of the present invention, the third space-time trajectory is a change in geographic position of the one terminal in the second time period.
In step 5 of the present invention, the MP channel measurement information reported by the one terminal includes PMI/CQI/RI information between the one terminal and the one MP, and neighbor cell measurement information measured by the one terminal.
In step 5 of the present invention, the one SP channel measurement information is measured based on the broadcast signal of the one SP. Further, the broadcast signal of the one SP includes a synchronization reference signal, system information.
In step 5 of the present invention, the features of the first resource include: the first resource includes the number of RBs to be allocated, an RB position, an RI number, a starting subframe of data scheduling, and a scheduling duration.
In step 5 of the present invention, the features of the first resource include: the first resource comprises service scheduling information, service buffering rate and throughput.
In step 6 of the present invention, the characteristics of the multi-cell joint resource allocation table of the one terminal include: the multi-cell joint resource allocation table of the terminal orders the cells according to the time granularity reaching order, and the MWF is used as a first criterion, and the cells are specifically expressed as a two-dimensional parameter (matching weight, cell ID). Further, at each time granularity, there is one geographic granularity, and there are one or more cell IDs. Further, the cell ID may correspond to the one MP or may correspond to a neighboring cell (i.e., SP).
The one time granularity corresponding to a plurality of cell IDs indicates that there are a plurality of cells around one geographic granularity.
In step 6 of the present invention, the features of the one cooperative resource allocation command include: the one cooperative resource allocation command includes a first resource of the one terminal and a multi-cell joint resource allocation table of the one terminal.
As a specific embodiment, the present invention provides a multi-cell joint resource allocation apparatus with multi-terminal location adaptation, including:
the positioning signal collection module is arranged to receive positioning signals sent by the terminal;
the measurement information collection module is used for receiving channel measurement information sent by the terminal and channel measurement information of the adjacent node;
the upper network interface module is used for sending a space-time track request to a network server and receiving a space-time track response sent by the network server;
the adjacent node interface module is used for sending a time advance request to an adjacent cell, receiving a time advance response of the adjacent cell and sending a multi-cell joint resource allocation table to the adjacent cell;
the space-time track measuring and calculating module is arranged for analyzing the first space-time track, calculating the second space-time track and predicting the third space-time track;
a cooperation management module configured to select SP and generate multi-cell joint resource allocation table
And the resource management module is used for calculating the first resource.
As a specific embodiment, the invention provides a multi-cell joint resource allocation system with self-adaptive terminal position, which comprises a network server, an MP, a plurality of SPs and a terminal;
The network server receives a space-time track request from an MP, sends a space-time track response to the MP, and provides a first space-time track of the terminal;
the MP collects the positioning signal of the terminal, calculates the second space-time track of the terminal and predicts the third space-time track of the terminal;
the one MP selects K SPs based on the third space-time trajectory. The MP sends time advance requests to K SPs and receives time advance responses of the SPs;
the MP collects MP channel measurement information reported by the terminal and calculates a first resource of the terminal;
the MP collects SP channel measurement reported by the channel and obtains a multi-cell joint resource allocation table of the terminal according to the time granularity reaching order based on a third space-time track;
the SP receives the time advance request and feeds back a time advance response; the SP receives a multi-cell joint resource allocation table of the terminal; and the SP receives the terminal, updates the first resource and sends an RRC connection reconfiguration message.
The terminal measures MP channels, measures SP signals, and reports MP channel measurement and SP channel measurement; the one terminal transmits a positioning signal.
Compared with the prior art, the invention provides a multi-cell joint resource allocation method, device and system with self-adaptive terminal position aiming at the communication requirement under dense networking, and improves the data transmission efficiency of the terminal when switching among multiple cells.
Fig. 2 is a schematic diagram of a system for terminal location adaptive multi-cell joint resource allocation according to an embodiment of the present invention.
As shown in fig. 1, the system 100 is an OFDM/OFDMA-based multi-cell system transmission system including base stations 111, 112, 113 and 114, a network server 101, and a communication terminal 110. Base station 111 is the primary transmission node of terminal 101 and base stations 112, 113 and 114 are the secondary transmission nodes of terminal 110.
Fig. 1 also shows a third space-time trajectory 130 of terminal 110, predicted by base station 111. The third space-time trajectory 130 represents the change in time of the terminal 110 that would enter the coverage areas of the base stations 112, 113 and 114, respectively.
Fig. 3 is a schematic diagram of a terminal location adaptive multi-cell joint resource allocation method according to an embodiment of the present invention;
as shown in fig. 3, the method for allocating terminal location adaptive multi-cell joint resources according to an embodiment of the present invention includes:
Step 211, an MP acquires a first space-time trajectory of the one terminal from the network, and calculates a second space-time trajectory of the one terminal in a coverage area.
Step 212, the MP predicts a third space-time track of the one terminal according to the first space-time track and the second space-time track of the one terminal and according to the preset minimum geographic granularity.
And step 213, the MP matches the geographic position of the adjacent cell with the third space-time track, calculates the matching weight of the adjacent cell, compares the matching weight with a preset matching threshold, and selects K adjacent cells.
Step 214, the MP obtaining, through the interface with the K neighboring cells, cell time advance amounts of the K SPs; the one MP informs the one user of the time advance of K SPs, and the cell IDs of the K SPs.
In step 215, the one terminal reports MP channel measurement information to the one MP, and the one MP calculates a first resource of the one user. And the user reports the K SP channel measurement information to the MP.
Step 216, the MP builds a multi-cell joint resource allocation table of the user according to the arrival sequence of the time granularity based on the third space-time track, the neighbor cell matching weight and the time advance, the SP channel measurement information, and the time advance of each cell, and sends the multi-cell joint resource allocation table to the SPs in the multi-cell joint resource allocation table.
Step 217, the SP parses the multi-cell resource allocation table of the one terminal, updates the first resource according to the time arrival granularity based on the first resource, and sends RRC connection reconfiguration information after the one terminal is connected.
Fig. 4 is a signaling flow diagram of a method for allocating terminal location adaptive multi-cell joint resources according to an embodiment of the present invention;
FIG. 5 illustrates a multi-cell joint resource allocation representation intent provided by one embodiment of the present invention;
as shown in fig. 5, the multi-cell joint resource allocation table provided in one embodiment of the present invention includes:
a multi-cell joint resource allocation table 400 contains time granularity numbers 411, 412, 413, and 414, and corresponding geographic granularities 421, 422, 423, and 424. 411 correspond to two candidate cells, 441 and 442, respectively, for terminal access, the matching weights of the two cells being 431 and 432, wherein 431 is greater than 432.
At time granularity 412, there is one candidate cell for terminal access, the matching weight of the cell is 433 and the cell ID is 443.
At time granularity 413, there are two candidate cells for terminal access, matching weights for the two candidate cells are 434 and 435, and cell IDs are 444 and 445.
At time granularity 414, there is one candidate cell for terminal access, the matching weight of the one candidate cell is 436, and the cell ID is 446.
As a specific embodiment, an apparatus provided in one embodiment of the present invention includes:
the positioning signal collecting module is used for receiving the positioning signal sent by the terminal and transmitting the positioning signal to the space-time track measuring and calculating module;
the measurement information collection module is used for receiving channel measurement information sent by the terminal and channel measurement information of the adjacent node and transmitting the channel measurement information to the resource management module;
an upper network interface module for transmitting space-time track request to a network server and receiving space-time track response transmitted by the network server to perform data interaction;
the adjacent node interface module is used for sending a time advance request to an adjacent cell, receiving a time advance response of the adjacent cell, and sending a multi-cell joint resource allocation table to the adjacent cell, and is connected with the collaborative management module for data interaction;
a space-time track measuring and calculating module for analyzing the first space-time track, calculating the second space-time track, predicting the third space-time track and transmitting the third space-time track;
a cooperation management module for selecting SP and generating multi-cell joint resource allocation table;
And the resource management module calculates the first resource according to the channel measurement information of the terminal and transmits the first resource.
The invention realizes the following remarkable beneficial effects:
the realization is simple, including: the method comprises the steps that a main transmission node receives a first space-time track sent by a terminal in a first time period, determines a second space-time track of the terminal in a coverage area of the main transmission node, and predicts a third space-time track of the terminal in a second time period according to a preset minimum geographic granularity; matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell combined resource distribution table; and the cooperative transmission node analyzes the multi-cell joint resource allocation table, selects an interface corresponding to the cell for connection, updates information resources according to time reaching granularity, and sends connection reconfiguration information, thereby improving the data transmission efficiency of a user when switching between multiple cells.
Any other suitable modification may also be made according to the technical solution and the idea of the invention. All such alternatives, modifications and improvements will readily occur to those skilled in the art and are intended to be within the scope of the invention as defined in the appended claims.
Claims (7)
1. A multi-cell joint cooperative transmission control method, comprising:
the method comprises the steps that a main transmission node receives a first space-time track sent by a terminal in a first time period, determines a second space-time track of the terminal in a coverage area of the main transmission node, and predicts a third space-time track of the terminal in a second time period according to a preset minimum geographic granularity;
matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell combined resource distribution table;
the cooperative transmission node analyzes the multi-cell joint resource allocation table, selects interfaces corresponding to the cells for connection, updates information resources according to time reaching granularity, and sends connection reconfiguration information;
wherein said matching the geographical location information of the cell adjacent to the coverage area of the third space-time trajectory and the primary transmission node comprises:
the main transmission node matches the geographic position of the adjacent cells with the third space-time track, calculates the matching weight of the adjacent cells, compares the matching weight with a preset matching threshold, and selects K adjacent cells, wherein 0< = K < = collaborative number;
The method comprises the steps that a main transmission node sends a time advance request through interfaces of K adjacent cells, and obtains the time advance of the K adjacent cells;
the master transmission node informs the terminal of the time advance of K adjacent cells and the IDs of the K adjacent cells;
the step of distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell combined resource distribution table comprises the following steps:
a terminal reports MP channel measurement information to a main transmission node MP, and the MP calculates a first resource of the terminal; the terminal reports SP channel measurement information of K cooperative transmission nodes or auxiliary transmission nodes to the MP;
the MP builds a multi-cell joint resource allocation table of the terminal according to the arrival sequence of time granularity based on a third space-time track, adjacent cell weight and time advance, SP channel measurement information and time advance of each cell, and sends a cooperative resource allocation command to a plurality of SPs in the multi-cell joint resource allocation table;
the collaborative transmission node analyzes the multi-cell joint resource allocation table, selects interfaces corresponding to the cells for connection, updates information resources according to time reaching granularity, and sends connection reconfiguration information, and the method comprises the following steps:
And the SP analyzes the multi-cell resource allocation table of the terminal, updates the first resource according to the time arrival granularity based on the first resource, and sends RRC connection reconfiguration information after the SP is connected with the terminal.
2. The method for controlling multi-cell joint cooperative transmission according to claim 1, wherein the step of the main transmission node receiving a first space-time trajectory of the terminal in a first period of time and determining a second space-time trajectory of the terminal in a coverage area of the main transmission node includes:
the method comprises the steps that a main transmission node reports a space-time track request to a network server, receives a space-time track response, obtains a first space-time track of a terminal, calculates and collects positioning signals of the terminal, and calculates a second space-time track of the terminal in the coverage area.
3. A multi-cell joint cooperative transmission control apparatus, comprising:
the transmission determining unit is used for receiving a first space-time track sent by a terminal in a first time period by a main transmission node, determining a second space-time track of the terminal in a coverage area of the main transmission node, and predicting a third space-time track of the terminal in a second time period according to a preset minimum geographic granularity;
The matching control unit is used for matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell joint resource distribution table;
a selection sending unit, configured to parse the multi-cell joint resource allocation table in cooperation with a transmission node, select an interface corresponding to the cell for connection, update information resources according to time reaching granularity, and send connection reconfiguration information;
the matching control unit is specifically configured to:
the main transmission node matches the geographic position of the adjacent cells with the third space-time track, calculates the matching weight of the adjacent cells, compares the matching weight with a preset matching threshold, and selects K adjacent cells, wherein 0< = K < = collaborative number;
the method comprises the steps that a main transmission node sends a time advance request through interfaces of K adjacent cells, and obtains the time advance of the K adjacent cells;
the master transmission node informs the terminal of the time advance of K adjacent cells and the IDs of the K adjacent cells;
the matching control unit is further specifically configured to:
A terminal reports MP channel measurement information to a main transmission node MP, and the MP calculates a first resource of the terminal; the terminal reports SP channel measurement information of K cooperative transmission nodes or auxiliary transmission nodes to the MP;
the MP builds a multi-cell joint resource allocation table of the terminal according to the arrival sequence of time granularity based on a third space-time track, adjacent cell weight and time advance, SP channel measurement information and time advance of each cell, and sends a cooperative resource allocation command to a plurality of SPs in the multi-cell joint resource allocation table;
the selection transmitting unit is specifically configured to:
and the SP analyzes the multi-cell resource allocation table of the terminal, updates the first resource according to the time arrival granularity based on the first resource, and sends RRC connection reconfiguration information after the SP is connected with the terminal.
4. The multi-cell joint cooperative transmission control apparatus according to claim 3, wherein the selection transmitting unit includes:
the collaborative management module is used for selecting collaborative transmission nodes, updating a collaborative list, maintaining a channel indication list of a user, counting track information of the user, receiving user data transmission state information and collecting measurement information reported by the user;
And the cooperative transmission module is used for sending/receiving a cooperative transmission request, sending/receiving a cooperative transmission response and sending/receiving a cooperative list.
5. The multi-cell joint cooperative transmission control apparatus according to claim 3, wherein the transmission determining unit includes:
the data transmission module is used for generating user data and processing the received user data;
and the data scheduling module is used for collecting the process of user data transmission, providing resource allocation for users and scheduling the data transmission of the users.
6. A multi-cell joint cooperative transmission control system, comprising: a base station corresponding to at least one cooperation area and at least one communication terminal, the base station comprising:
the transmission determining unit is used for receiving a first space-time track sent by the communication terminal in a first time period by the main transmission node, determining a second space-time track of the communication terminal in the coverage area of the main transmission node, and predicting a third space-time track of the communication terminal in a second time period according to a preset minimum geographic granularity;
the matching control unit is used for matching the geographic position information of the adjacent cells of the coverage area of the third space-time track and the main transmission node to obtain information resources of the adjacent cells, and distributing the information resources according to the time granularity reaching sequence to obtain a multi-cell joint resource distribution table;
A selection sending unit, configured to parse the multi-cell joint resource allocation table in cooperation with a transmission node, select an interface corresponding to the cell for connection, update information resources according to time reaching granularity, and send connection reconfiguration information;
the matching control unit is specifically configured to:
the main transmission node matches the geographic position of the adjacent cells with the third space-time track, calculates the matching weight of the adjacent cells, compares the matching weight with a preset matching threshold, and selects K adjacent cells, wherein 0< = K < = collaborative number;
the method comprises the steps that a main transmission node sends a time advance request through interfaces of K adjacent cells, and obtains the time advance of the K adjacent cells;
the master transmission node informs the terminal of the time advance of K adjacent cells and the IDs of the K adjacent cells;
the matching control unit is further specifically configured to:
a terminal reports MP channel measurement information to a main transmission node MP, and the MP calculates a first resource of the terminal; the terminal reports SP channel measurement information of K cooperative transmission nodes or auxiliary transmission nodes to the MP;
the MP builds a multi-cell joint resource allocation table of the terminal according to the arrival sequence of time granularity based on a third space-time track, adjacent cell weight and time advance, SP channel measurement information and time advance of each cell, and sends a cooperative resource allocation command to a plurality of SPs in the multi-cell joint resource allocation table;
The selection transmitting unit is specifically configured to:
and the SP analyzes the multi-cell resource allocation table of the terminal, updates the first resource according to the time arrival granularity based on the first resource, and sends RRC connection reconfiguration information after the SP is connected with the terminal.
7. The multi-cell joint cooperative transmission control system according to claim 6, wherein:
the main transmission node collects track information and user state information of a user, selects one or more cooperative transmission nodes, constructs a cooperative list, sends a cooperative transmission request to the cooperative transmission nodes in the cooperative list, updates the states of the cooperative transmission nodes in the cooperative list according to a received cooperative transmission request response, indicates the activated cooperative transmission nodes to perform data transmission with the user, adds or deletes the cooperative transmission nodes according to the track information of the user, selects a target transmission node, and updates the cooperative list to be sent to the cooperative transmission nodes;
the cooperative transmission node receives a cooperative transmission request, feeds back a cooperative transmission request response, and when the cooperative transmission request response is agreeing, indicates that the cooperative transmission node agrees to perform data service on the user and reserves resources according to a main resource allocation; when a cooperative transmission request response is disagreeable, the cooperative transmission node does not perform data service on the user.
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