CN112203285A - 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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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- 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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- 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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- H04W36/04—Reselecting a cell layer in multi-layered cells
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- 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, comprising the following steps: a main transmission node receives a first space-time track in a first time period sent by a terminal, 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 geographical granularity; matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint 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 the time arrival granularity and sends connection reconfiguration information. The invention has the advantages that: the method is simple to realize, and improves the data transmission efficiency of the user during switching among multiple cells.
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
At present, 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 the data transmission rate and reduce the time delay. Then, in 5g (fine generation) and future mobile communication technologies, wireless communication is performed using a high frequency band, and in the case of dense networking, when a terminal changes its location, it is necessary to frequently switch between different small base stations, which causes additional signaling overhead. Therefore, UDNs have a large challenge to mobility. To solve this problem, 5G proposes the concept of a virtual cell centered on the terminal: in the process of terminal movement, a virtual cell is formed by taking a terminal as a center, and the virtual cell is composed of a master transmission node (master TP) and a plurality of service transmission nodes (slave TP), wherein the master TP is responsible for all high-level control signaling, allocates wireless resources, schedules data receiving and transmitting, and the slave TP performs cooperative transmission according to the indication of the master TP without performing resource allocation.
The prior art does not solve how to dynamically allocate joint resources among a plurality of cells according to the position change of a terminal.
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:
a main transmission node receives a first space-time track in a first time period sent by a terminal, 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 geographical granularity;
matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint 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 the time arrival granularity and sends connection reconfiguration information.
Further, the method for determining the second space-time trajectory of the terminal in the coverage area of the main transmission node by 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 and acquires a first space-time track of a terminal, and the main transmission node calculates and collects a positioning signal of the terminal and calculates a second space-time track of the terminal in a coverage area.
Further, the matching the third space-time trajectory with the geographical location information of the cell adjacent to the coverage area of the primary transmission node includes:
and the main transmission node 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, wherein 0< ═ K < ═ the number of the cooperation.
Further, still include: the main transmission node sends a time advance response by selecting interfaces of K adjacent cells and acquires the time advance of the K adjacent cells.
Further, still include: and the main transmission node informs the terminal of the time advance of K adjacent cells and the IDs of the K adjacent cells.
Another object of the present invention is to provide a multi-cell cooperative transmission control apparatus, comprising:
a transmission determining unit, configured to receive, by a primary transmission node, a first space-time trajectory in a first time period sent by a terminal, determine a second space-time trajectory of the terminal in a coverage area of the primary transmission node, and predict, according to a preset minimum geographic granularity, a third space-time trajectory of the terminal in a second time period;
the matching control unit is used for matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint resource distribution table;
and the selection sending unit is used for analyzing the multi-cell joint resource allocation table by the cooperative transmission node, selecting an interface corresponding to the cell for connection, updating the information resource according to the time arrival granularity, and sending connection reconfiguration information.
Further, the selective transmission unit includes:
the system comprises a cooperation management module, a data transmission module and a data transmission module, wherein the cooperation management module is used for selecting a cooperation transmission node, updating a cooperation 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 the cooperative transmission request, sending/receiving the cooperative transmission response and sending/receiving the cooperative list.
Further, the transmission determination 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 the user and scheduling the data transmission of the user.
Another object of the present invention is to provide a multi-cell joint cooperative transmission control system, which includes: a base station, the base station corresponding to at least one coordination area and at least one communication terminal, the base station comprising:
a transmission determining unit, configured to receive, by a master transmission node, a first space-time trajectory in a first time period sent by a communication terminal, determine a second space-time trajectory of the communication terminal in a coverage area of the master transmission node, and predict, according to a preset minimum geographic granularity, a third space-time trajectory of the communication terminal in a second time period;
the matching control unit is used for matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint resource distribution table;
and the selection sending unit is used for analyzing the multi-cell joint resource allocation table by the cooperative transmission node, selecting an interface corresponding to the cell for connection, updating the information resource according to the time arrival granularity, and sending 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, updates the cooperative list, and sends the cooperative transmission node;
the cooperative transmission node receives a cooperative transmission request, feeds back a cooperative transmission request response, indicates that the cooperative transmission node agrees to perform data service on the user when the cooperative transmission request response is agreement, and allocates reserved resources according to a main resource; when a cooperative transmission request response is not agreed, it indicates that the cooperative transmission node does not perform data service for the user.
The invention achieves the following significant beneficial effects:
the realization is simple, include: a main transmission node receives a first space-time track in a first time period sent by a terminal, 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 geographical granularity; matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint 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 the time arrival granularity, and sends connection reconfiguration information, so that the data transmission efficiency of a user during switching among the cells is improved.
Drawings
Fig. 1 is a flowchart of a multi-cell joint cooperative transmission control method according to the present invention;
fig. 2 is a schematic diagram of a system for allocating joint resources of multiple cells in a terminal location adaptive manner according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating 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 illustrating a terminal location adaptive multi-cell joint resource allocation method according to an embodiment of the present invention;
fig. 5 illustrates a representation of multi-cell joint resource allocation provided by an 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 of specific embodiments of the invention. It is to be noted that the drawings are in a very simplified form and are not to scale, which is intended merely for convenience and clarity in describing embodiments of the invention.
It should be noted that, for clarity of description of the present invention, various embodiments are specifically described to further illustrate different implementations of the present invention, wherein the embodiments are illustrative and not exhaustive. In addition, for simplicity of description, the contents mentioned in the previous embodiments are often omitted in the following embodiments, and therefore, the contents not mentioned in the following embodiments may be referred to the previous embodiments accordingly.
While the invention is amenable to various modifications and alternative forms, specifics thereof have been shown by way of example in the drawings and will be described in detail. It should be understood that the inventors do not intend to limit the invention to the particular embodiments described, but intend to protect all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the claims. The same meta-module part number may be used throughout the drawings to represent the same or similar parts.
Referring to fig. 1, the present invention provides a multi-cell joint cooperative transmission control method, including:
step S101, a main transmission node receives a first space-time track in a first time period sent by a terminal, determines a second space-time track of the terminal in the 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 geographical granularity;
step S102, matching the third space-time trajectory with geographical position information of an adjacent cell of a coverage area of the main transmission node to obtain information resources of the adjacent cell, and distributing the information resources according to a time granularity arrival sequence to obtain a multi-cell joint resource distribution table;
step S103, 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 the time-reaching granularity, and sends connection reconfiguration information.
In one embodiment, a primary transmission node receives a first space-time trajectory sent by a terminal in a first time period, and determines a second space-time trajectory of the terminal in a coverage area of the primary 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 and acquires a first space-time track of a terminal, and the main transmission node calculates and collects a positioning signal of the terminal and calculates a second space-time track of the terminal in a coverage area.
In one embodiment, the matching the third space-time trajectory with the geographical location information of the cell adjacent to the coverage area of the primary transmission node includes:
and the main transmission node 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, wherein 0< ═ K < ═ the number of the cooperation.
In one embodiment, further comprising: the main transmission node sends a time advance response by selecting interfaces of K adjacent cells and acquires the time advance of the K adjacent cells.
In one embodiment, further comprising: and the main transmission node informs the terminal of the time advance of K adjacent cells and the IDs of the K adjacent cells.
Another object of the present invention is to provide a multi-cell cooperative transmission control apparatus, comprising:
a transmission determining unit, configured to receive, by a primary transmission node, a first space-time trajectory in a first time period sent by a terminal, determine a second space-time trajectory of the terminal in a coverage area of the primary transmission node, and predict, according to a preset minimum geographic granularity, a third space-time trajectory of the terminal in a second time period;
the matching control unit is used for matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint resource distribution table;
and the selection sending unit is used for analyzing the multi-cell joint resource allocation table by the cooperative transmission node, selecting an interface corresponding to the cell for connection, updating the information resource according to the time arrival granularity, and sending connection reconfiguration information.
In one embodiment, the selecting and sending unit includes:
the system comprises a cooperation management module, a data transmission module and a data transmission module, wherein the cooperation management module is used for selecting a cooperation transmission node, updating a cooperation 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 the cooperative transmission request, sending/receiving the cooperative transmission response and sending/receiving the cooperative list.
In one embodiment, the transmission determination 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 the user and scheduling the data transmission of the user.
Another object of the present invention is to provide a multi-cell joint cooperative transmission control system, which includes: a base station, the base station corresponding to at least one coordination area and at least one communication terminal, the base station comprising:
a transmission determining unit, configured to receive, by a master transmission node, a first space-time trajectory in a first time period sent by a communication terminal, determine a second space-time trajectory of the communication terminal in a coverage area of the master transmission node, and predict, according to a preset minimum geographic granularity, a third space-time trajectory of the communication terminal in a second time period;
the matching control unit is used for matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint resource distribution table;
and the selection sending unit is used for analyzing the multi-cell joint resource allocation table by the cooperative transmission node, selecting an interface corresponding to the cell for connection, updating the information resource according to the time arrival granularity, and sending 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, updates the cooperative list, and sends the cooperative transmission node to the master transmission node;
the cooperative transmission node receives a cooperative transmission request, feeds back a cooperative transmission request response, indicates that the cooperative transmission node agrees to perform data service on the user when the cooperative transmission request response is agreement, and allocates reserved resources according to a main resource; when a cooperative transmission request response is not agreed, it indicates that the cooperative transmission node does not perform data service for the user.
As a specific embodiment, the present invention names a master node (MP), a target node (TP), and a cooperative transmission node or a slave node (SP). In the present invention, the "cell" and the "node" are not distinguished, and are equivalent to each other.
As a specific embodiment, a terminal location adaptive multi-cell joint resource allocation method includes:
step 1: an 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 a terminal. And the MP calculation 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 first space-time track and the second space-time track of the terminal and the preset minimum geographic granularity.
And step 3: and the MP matches the geographic positions of the adjacent cells with the third space-time trajectory, calculates the Matching Weight (MWF) of the adjacent cells, compares the Matching Weight (MWF) with a preset matching threshold, and selects K adjacent cells, wherein 0< ═ K < ═ collaborative number, and the selected K adjacent cells are named as SPs.
And 4, step 4: the MP sends a time advance response through the interfaces of the selected K adjacent cells and acquires the time advance of the selected K SP cells; and the MP informs the terminal of the time advance of the K SPs and the cell IDs of the K SPs.
And 5: and the terminal reports MP channel measurement information to the MP, and the MP calculates the first resource of the terminal. And the terminal reports the K SP channel measurement information to the MP.
Step 6: and the MP builds a multi-cell joint resource allocation table of the terminal according to the arrival sequence of time granularity based on the third space-time trajectory, the weight and the time advance of the adjacent cell, 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.
And 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 being 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 space-time trajectory request includes an ID of the terminal and a request message.
In step 1 of the present invention, the first space-time trajectory contains geographical location information of the one terminal changing with time in a first time period.
In step 1 of the present invention, the first space-time trajectory contains a rule that a geographical location of the terminal changes with time in a first time period.
In step 1 of the present invention, the second space-time trajectory is the geographical location information of the terminal in the coverage area of the MP.
In step 2 of the present invention, the minimum geographic granularity is one grid of a network grid.
The network grid is a two-dimensional map of cells and terminals in a region.
In step 2 of the present invention, the third space-time trajectory is a change of a geographic location of the terminal in a second time period.
In step 5 of the present invention, the MP channel measurement information reported by the terminal includes PMI/CQI/RI information between the terminal and the MP, and neighbor cell measurement information measured by the 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 characteristics of the first resource include: the first resource includes the number of RBs to be allocated, the position of the RBs, the number of RIs, a starting subframe of data scheduling, and a scheduling duration.
In step 5 of the present invention, the characteristics of the first resource include: the first resource comprises service scheduling information, a service cache rate and throughput.
In step 6 of the present invention, the characteristics of the multi-cell joint resource allocation table of the terminal include: the multi-cell joint resource allocation table of the terminal ranks the plurality of cells according to a time granularity reaching order, with MWF as a first criterion, and is specifically represented as a two-dimensional parameter (matching weight, cell ID). Further, at each time granularity, one geographic granularity corresponds to one or more cell IDs. Further, the cell ID may correspond to the one MP and may also correspond to a neighboring cell (i.e., SP).
The one time granularity corresponds to a plurality of cell IDs indicating that there are a plurality of cells in the vicinity of one geographic granularity.
In step 6 of the present invention, the one co-resource allocation command is characterized by comprising: the one co-resource allocation command includes the 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-terminal location adaptive multi-cell joint resource allocation apparatus, including:
the positioning signal collection module is used for receiving a positioning signal sent by a terminal;
the measurement information collection module is arranged to receive channel measurement information sent by the terminal and channel measurement information of the adjacent node;
the upper network interface module is set to send a space-time track request to a network server and receive a space-time track response sent by the network server;
the adjacent node interface module is set to send a time advance request to the adjacent cell, receive a time advance response of the adjacent cell and send a multi-cell joint resource allocation table to the adjacent cell;
the space-time track measuring and calculating module is used for analyzing the first space-time track, calculating the second space-time track and predicting the third space-time track;
a cooperative management module configured to select SP and generate a multi-cell joint resource allocation table
A resource management module configured to compute a first resource.
As a specific embodiment, the present invention provides a terminal location adaptive multi-cell joint resource allocation system, which includes 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 signals of the terminal, calculates a second space-time track of the terminal and predicts a third space-time track of the terminal;
the one MP selects K SPs based on the third space-time trajectory. The MP sends a time advance request to K SPs and receives the time advance response 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 sequence based on a third space-time track;
the SP receives a 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 an MP channel, measures an SP signal, and reports MP channel measurement and SP channel measurement; the one terminal transmits a positioning signal.
As a specific embodiment, a terminal location adaptive multi-cell joint resource allocation method of the present invention includes:
step 1: an 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 a terminal. And the MP calculation 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 first space-time track and the second space-time track of the terminal and the preset minimum geographic granularity.
And step 3: and the MP matches the geographic positions of the adjacent cells with the third space-time trajectory, calculates the Matching Weight (MWF) of the adjacent cells, compares the Matching Weight (MWF) with a preset matching threshold, and selects K adjacent cells, wherein 0< ═ K < ═ collaborative number, and the selected K adjacent cells are named as SPs.
And 4, step 4: the MP sends a time advance response through the interfaces of the selected K adjacent cells and acquires the time advance of the selected K SP cells; and the MP informs the terminal of the time advance of the K SPs and the cell IDs of the K SPs.
And 5: and the terminal reports MP channel measurement information to the MP, and the MP calculates the first resource of the terminal. And the terminal reports the K SP channel measurement information to the MP.
Step 6: and the MP builds a multi-cell joint resource allocation table of the terminal according to the arrival sequence of time granularity based on the third space-time trajectory, the weight and the time advance of the adjacent cell, 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.
And 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 being 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 space-time trajectory request includes an ID of the terminal and a request message.
In step 1 of the present invention, the first space-time trajectory contains geographical location information of the one terminal changing with time in a first time period.
In step 1 of the present invention, the first space-time trajectory contains a rule that a geographical location of the terminal changes with time in a first time period.
In step 1 of the present invention, the second space-time trajectory is the geographical location information of the terminal in the coverage area of the MP.
In step 2 of the present invention, the minimum geographic granularity is one grid of a network grid.
The network grid is a two-dimensional map of cells and terminals in a region.
In step 2 of the present invention, the third space-time trajectory is a change of a geographic location of the terminal in a second time period.
In step 5 of the present invention, the MP channel measurement information reported by the terminal includes PMI/CQI/RI information between the terminal and the MP, and neighbor cell measurement information measured by the 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 characteristics of the first resource include: the first resource includes the number of RBs to be allocated, the position of the RBs, the number of RIs, a starting subframe of data scheduling, and a scheduling duration.
In step 5 of the present invention, the characteristics of the first resource include: the first resource comprises service scheduling information, a service cache rate and throughput.
In step 6 of the present invention, the characteristics of the multi-cell joint resource allocation table of the terminal include: the multi-cell joint resource allocation table of the terminal ranks the plurality of cells according to a time granularity reaching order, with MWF as a first criterion, and is specifically represented as a two-dimensional parameter (matching weight, cell ID). Further, at each time granularity, one geographic granularity corresponds to one or more cell IDs. Further, the cell ID may correspond to the one MP and may also correspond to a neighboring cell (i.e., SP).
The one time granularity corresponds to a plurality of cell IDs indicating that there are a plurality of cells in the vicinity of one geographic granularity.
In step 6 of the present invention, the one co-resource allocation command is characterized by comprising: the one co-resource allocation command includes the 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-terminal location adaptive multi-cell joint resource allocation apparatus, including:
the positioning signal collection module is used for receiving a positioning signal sent by a terminal;
the measurement information collection module is arranged to receive channel measurement information sent by the terminal and channel measurement information of the adjacent node;
the upper network interface module is set to send a space-time track request to a network server and receive a space-time track response sent by the network server;
the adjacent node interface module is set to send a time advance request to the adjacent cell, receive a time advance response of the adjacent cell and send a multi-cell joint resource allocation table to the adjacent cell;
the space-time track measuring and calculating module is used for analyzing the first space-time track, calculating the second space-time track and predicting the third space-time track;
a cooperative management module configured to select SP and generate a multi-cell joint resource allocation table
A resource management module configured to compute a first resource.
As a specific embodiment, the present invention provides a terminal location adaptive multi-cell joint resource allocation system, which includes 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 signals of the terminal, calculates a second space-time track of the terminal and predicts a third space-time track of the terminal;
the one MP selects K SPs based on the third space-time trajectory. The MP sends a time advance request to K SPs and receives the time advance response 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 sequence based on a third space-time track;
the SP receives a 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 an MP channel, measures an SP signal, 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 terminal position self-adaptive multi-cell joint resource allocation method, device and system aiming at the communication requirement under dense networking, and improves the data transmission efficiency of the terminal during switching among the multi-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 a multi-cell system transmission system based on OFDM/OFDMA, and includes base stations 111, 112, 113 and 114, a network server 101, and a communication terminal 110. Base station 111 is the primary transmission node for terminal 101, and base stations 112, 113 and 114 are secondary transmission nodes for terminal 110.
Fig. 1 also shows a third space-time trajectory 130 of the terminal 110, predicted by the base station 111. A third space-time trace 130 indicates that terminal 110 may enter the coverage areas of base stations 112, 113, and 114, respectively, over time.
Fig. 3 is a schematic diagram illustrating a terminal location adaptive multi-cell joint resource allocation method according to an embodiment of the present invention;
as shown in fig. 3, a method for allocating terminal location adaptive multi-cell joint resources according to an embodiment of the present invention includes:
step 211, an MP obtains a first space-time trajectory of the terminal from the network, and calculates a second space-time trajectory of the terminal in a coverage area.
Fig. 4 is a signaling flow diagram illustrating a terminal location adaptive multi-cell joint resource allocation method according to an embodiment of the present invention;
fig. 5 illustrates a representation of multi-cell joint resource allocation provided by an embodiment of the present invention;
as shown in fig. 5, a multi-cell joint resource allocation table provided by an embodiment of the present invention includes:
a multi-cell joint resource allocation table 400 contains time granularity index numbers 411, 412, 413, and 414, and corresponding geographic granularities 421, 422, 423, and 424. 411 corresponds to two candidate cells, 441 and 442 respectively, for terminal access, and the matching weights of the two cells are 431 and 432, wherein 431 is greater than 432.
At time granularity 412, there is a 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 with matching weights 434 and 435 and cell IDs 444 and 445.
At time granularity 414, there is one candidate cell for terminal access, which has a matching weight of 436 and a cell ID of 446.
As a specific embodiment, an embodiment of the present invention provides an apparatus including:
the positioning signal collecting module is used for receiving a positioning signal sent by the terminal and transmitting the positioning signal to the space-time track measuring and calculating module;
a measurement information collection module, configured to receive channel measurement information sent by a terminal and channel measurement information of an adjacent node, and transmit the channel measurement information to a resource management module;
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 to carry out data interaction;
the adjacent node interface module is used for sending a time advance request to the adjacent cell, receiving a time advance response of the adjacent cell, sending a multi-cell joint resource allocation table to the adjacent cell and connecting the adjacent node interface module with the cooperative management module for data interaction;
the space-time track measuring and calculating module analyzes the first space-time track, calculates the second space-time track, predicts the third space-time track and transmits the third space-time track;
a cooperative 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 achieves the following significant beneficial effects:
the realization is simple, include: a main transmission node receives a first space-time track in a first time period sent by a terminal, 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 geographical granularity; matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint 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 the time arrival granularity, and sends connection reconfiguration information, so that the data transmission efficiency of a user during switching among the cells is improved.
Any other suitable modifications can be made according to the technical scheme and the conception of the invention. All such alternatives, modifications and improvements as would be obvious to one skilled in the art are intended to be included within the scope of the invention as defined by the appended claims.
Claims (10)
1. A multi-cell joint cooperative transmission control method is characterized by comprising the following steps:
a main transmission node receives a first space-time track in a first time period sent by a terminal, 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 geographical granularity;
matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint 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 the time arrival granularity and sends connection reconfiguration information.
2. The multi-cell joint cooperative transmission control method according to claim 1, wherein a primary transmission node receives a first space-time trajectory sent by a terminal in a first time period, and determines a second space-time trajectory of the terminal in a coverage area of the primary 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 and acquires a first space-time track of a terminal, and the main transmission node calculates and collects a positioning signal of the terminal and calculates a second space-time track of the terminal in a coverage area.
3. The multi-cell joint cooperative transmission control method according to claim 1, wherein the matching of the third space-time trajectory with the geographical location information of the cell adjacent to the coverage area of the primary transmission node includes:
and the main transmission node 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, wherein 0< ═ K < ═ the number of the cooperation.
4. The multi-cell joint cooperative transmission control method according to claim 3, further comprising: the main transmission node sends a time advance response by selecting interfaces of K adjacent cells and acquires the time advance of the K adjacent cells.
5. The multi-cell joint cooperative transmission control method according to claim 4, further comprising: and the main transmission node informs the terminal of the time advance of K adjacent cells and the IDs of the K adjacent cells.
6. A multi-cell cooperative transmission control apparatus, comprising:
a transmission determining unit, configured to receive, by a primary transmission node, a first space-time trajectory in a first time period sent by a terminal, determine a second space-time trajectory of the terminal in a coverage area of the primary transmission node, and predict, according to a preset minimum geographic granularity, a third space-time trajectory of the terminal in a second time period;
the matching control unit is used for matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint resource distribution table;
and the selection sending unit is used for analyzing the multi-cell joint resource allocation table by the cooperative transmission node, selecting an interface corresponding to the cell for connection, updating the information resource according to the time arrival granularity, and sending connection reconfiguration information.
7. The multi-cell cooperative transmission control apparatus according to claim 6, wherein the selection transmitter includes:
the system comprises a cooperation management module, a data transmission module and a data transmission module, wherein the cooperation management module is used for selecting a cooperation transmission node, updating a cooperation 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 the cooperative transmission request, sending/receiving the cooperative transmission response and sending/receiving the cooperative list.
8. The multi-cell joint cooperative transmission control apparatus according to claim 6, wherein the transmission determination 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 the user and scheduling the data transmission of the user.
9. A multi-cell joint cooperative transmission control system, comprising: a base station, the base station corresponding to at least one coordination area and at least one communication terminal, the base station comprising:
a transmission determining unit, configured to receive, by a master transmission node, a first space-time trajectory in a first time period sent by a communication terminal, determine a second space-time trajectory of the communication terminal in a coverage area of the master transmission node, and predict, according to a preset minimum geographic granularity, a third space-time trajectory of the communication terminal in a second time period;
the matching control unit is used for matching the third space-time trajectory with the geographical position information of the adjacent cell of the coverage area of the main transmission node to obtain the information resource of the adjacent cell, and distributing the information resource according to the time granularity arrival sequence to obtain a multi-cell joint resource distribution table;
and the selection sending unit is used for analyzing the multi-cell joint resource allocation table by the cooperative transmission node, selecting an interface corresponding to the cell for connection, updating the information resource according to the time arrival granularity, and sending connection reconfiguration information.
10. The multi-cell joint cooperative transmission control system according to claim 9, 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 state of the cooperative transmission nodes in the cooperative list according to the 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, updates the cooperative list and sends the cooperative transmission node;
the cooperative transmission node receives a cooperative transmission request, feeds back a cooperative transmission request response, indicates that the cooperative transmission node agrees to perform data service on the user when the cooperative transmission request response is agreement, and allocates reserved resources according to a main resource; when a cooperative transmission request response is not agreed, it indicates that the cooperative transmission node does not perform data service for the user.
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