WO2015169027A1

WO2015169027A1 - Coordinated multi-point transmission processing method and device, base station and system thereof

Info

Publication number: WO2015169027A1
Application number: PCT/CN2014/086971
Authority: WO
Inventors: 方建民; 孙云锋; 李儒岳
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-05-07
Filing date: 2014-09-19
Publication date: 2015-11-12
Also published as: CN105101416A

Abstract

Disclosed are a coordinated multi-point transmission processing method and device, a base station and a system thereof. The method comprises: receiving, by a base station, a CoMP cooperation indication message from other base stations, wherein the CoMP cooperation indication message carries at least one piece of the following information: CoMP hypothesis information about one or more cells of the base station, and a compulsory execution mark used for indicating whether to compulsorily execute adjustment of wireless time-frequency resources of the one or more cells according to the CoMP hypothesis information; and processing, by the base station, the wireless time-frequency resources of the one or more cells according to the CoMP cooperation indication message. By means of the present invention, the problem in the related art that CoMP cooperation information exchanged between base stations is not provided is solved, thereby enabling CoMP cooperation to be conducted in both the distributed situation and the centralized situation and achieving the effect of the expected gain.

Description

Cooperative multipoint transmission processing method, device, base station and system thereof

Technical field

The present invention relates to the field of communications, and in particular to a cooperative multipoint transmission processing method, apparatus, and base station and system thereof.

Background technique

With the demand for Long Term Evolution-Advanced (LTE-A), people pay more and more attention to node average spectral efficiency and node edge spectrum efficiency. Since the uplink and downlink of the LTE-A system are both Orthogonal Frequency Division Multiplexing (OFDM) or some variant of OFDM as the basic multiple access multiplexing method, and the conventional code division multiple access (CDMA) , Code Division Multiple Access) is different for the basic multiple access multiplexing wireless communication system. The LTE-A system has no processing gain. Because the internal frequency is orthogonal, there is almost no interference problem, but the interference at the edge of the node. Relatively tricky, the spectral efficiency of the edge of the node is of the utmost concern.

Generally, there are three main methods for dealing with interference at the edge of a node: interference randomization, interference cancellation, and interference coordination (avoidance). Among them, the method of interference randomization generally adopts a method of direct spreading or code hopping in frequency hopping to alleviate nodes. The interference between the two requires no network planning, and almost no signaling support is required, but only the interference can be mitigated, and the interference between the nodes cannot be fundamentally eliminated. The method of interference cancellation uses some algorithms to eliminate interference, and generally requires additional Physical entities, such as multi-antenna technology, can achieve the elimination of interference; the method of interference coordination (avoidance) exchanges information between nodes, so that each node automatically selects appropriate according to the information of other nodes and its own situation. Resources are transmitted to achieve efficient use of resources between nodes, to reduce the chance of resource collision between nodes, to achieve the purpose of node edge performance improvement, to avoid the use of the same time-frequency resources between nodes to avoid interference between nodes.

In LTE R11, an interference coordination (avoidance) mechanism is Coordinated Multi-Point Transmission (CoMP). Specific technologies include:

1. Coordinated Scheduling/Coordinated Beam-forming (CS/CB): Cooperative scheduling between different transmission nodes and coordination of spatial beam weights, on the one hand, collaborating on power, and On the one hand, two users collaborating in the spatial dimension to avoid beam collisions are scheduled on the same resource;

2. Multi-point joint transmission (JT): Multiple cells jointly provide signal transmission to target users on the same resource. For the terminal, in JT technology, the interference signal becomes a useful signal. , thereby greatly improving the quality of signal reception;

3. DPS/DPB (Dynamic point switching/blanking): The network side dynamically selects the best node for data transmission or dynamic interference according to the link performance of different nodes fed back by the terminal. The cell is silent (or weakened, ie muting) data transmission, or DPS is combined with DPB.

In LTE R12, the CoMP design problem in the case of non-ideal backhaul is further considered, and in the case of non-ideal backhaul, in order to support CoMP, what content needs to be discussed is discussed, and it is considered that three types of information need to be exchanged. : CoMP hypothesis information: used to indicate what kind of resource allocation mode the desired receiving node uses to coordinate CoMP; Benefit metric information: used to characterize the beneficial effects that can be obtained when executed according to CoMP hypothesis And the reference signal received power (RSRP) information, which is used to assist scheduling as long-term characteristic channel state information (CSI). However, there is no consideration as to how the above information interacts between nodes and can satisfy both distributed and centralized CoMP collaboration.

The problem that how to interact with CoMP collaboration information between base stations (or evolved base stations, eNBs) enables CoMP cooperation in distributed and centralized situations to achieve the expected gain is not provided in the related art, and no effective solution has been proposed yet. Program.

Summary of the invention

Embodiments of the present invention provide a cooperative multipoint transmission processing method, apparatus, base station, and system thereof, to at least solve the above problems.

According to an aspect of the embodiments of the present invention, a coordinated multipoint transmission processing method is provided, including: a base station receiving a CoMP cooperation indication message from another base station, where the CoMP cooperation indication message carries at least one of the following information And a CoMP hypothesis information of one or more cells of the base station, an enforcement flag for indicating whether to perform adjustment of the radio time-frequency resource of the one or more cells according to the CoMP hypothesis information; The CoMP cooperation indication message processes radio time-frequency resources of the one or more cells.

Preferably, the processing, by the base station, the radio time-frequency resource of the one or more cells according to the CoMP cooperation indication message, that: the base station determines to adjust the radio time-frequency resource to the one or more cells. Whether the impact is acceptable; if the judgment result is acceptable, the base station adjusts the radio time-frequency resource of the one or more cells according to the CoMP cooperation indication message.

Preferably, in a case that the determination result is unacceptable, the method further includes: the base station sending a response message rejecting the adjustment of the radio time-frequency resource to the other base station, where the response message carries a rejection adjustment The cause value of the wireless time-frequency resource.

Preferably, the method further includes: the base station receiving a CoMP cooperation cancellation indication message from another base station, where the CoMP cooperation cancellation indication message carries a cell identifier of one or more cells of the base station; The base station cancels CoMP cooperation of the one or more cells according to the CoMP cooperation cancellation indication message.

Preferably, after the base station receives the CoMP cooperation cancellation indication message from the other base station, the method further includes: the base station transmitting, to the other base station, a response message that receives the CoMP cooperation cancellation indication message. .

Preferably, the method further includes: the base station receiving a CoMP cooperation cancellation request message from another base station, where the CoMP cooperation cancellation request message carries at least a cell identifier of at least one cell of the other base station; Determining, by the base station, whether to cancel the CoMP cooperation of the cells of the other base station, and sending a response message carrying the determination result to the other base station, where the response message is used to indicate that the other base station cancels/maintains the other base station CoMP cooperation of all or part of cells in at least one cell.

Preferably, the CoMP cooperation cancellation request message further carries a cause value of the other base station requesting cancellation of CoMP cooperation of all or a part of the cells in the at least one cell.

Preferably, the method further includes: the base station receiving a CoMP cooperation cancellation notification message from another base station, where the CoMP cooperation cancellation notification message carries a cell identifier of at least one cell of the other base station, the CoMP The cooperation cancellation notification message is used to notify the base station that the other base station has/will soon cancel the CoMP cooperation of the at least one cell.

Preferably, the enforcement flag carried in the CoMP cooperation indication message is used to indicate whether all cells in the one or more cells are forced to perform adjustment of radio time-frequency resources according to the CoMP hypothesis information, or The enforcement flag carried in the CoMP cooperation indication message is used to indicate whether each of the one or more cells respectively enforces adjustment of the radio time-frequency resource according to the CoMP hypothesis information.

Preferably, the CoMP cooperation cancellation indication message, the CoMP cooperation cancellation request message, and the CoMP cooperation cancellation notification message are carried in the same type of message, and are distinguished by the predetermined identifier carried in the same type of message.

According to another aspect of the present invention, a coordinated multipoint transmission processing apparatus is provided, which is located in a base station, and includes: a first receiving module, configured to receive a CoMP cooperation indication message from another base station, where the CoMP The cooperation indication message carries information of at least one of the following: CoMP hypothesis information of one or more cells of the base station, indicating whether to enforce radio time-frequency of the one or more cells according to the CoMP hypothesis information An enforcement flag of the adjustment of the resource; the processing module configured to process the wireless time-frequency resource of the one or more cells according to the CoMP cooperation indication message.

Preferably, the processing module includes: a determining unit, configured to determine whether it is acceptable to adjust an impact of the wireless time-frequency resource on the one or more cells; and an adjusting unit configured to adjust, according to the CoMP cooperation indication message The wireless time-frequency resource of one or more cells.

Preferably, the processing module further includes: a sending unit, configured to send a response message rejecting the adjustment of the wireless time-frequency resource to the other base station, where the response message carries a refusal to adjust the wireless time-frequency resource Reason value.

Preferably, the apparatus further includes: a second receiving module, configured to receive a CoMP cooperation cancellation indication message from another base station, where the CoMP cooperation cancellation indication message carries a cell of one or more cells of the base station And an canceling module, configured to cancel CoMP cooperation of the one or more cells according to the CoMP cooperation cancellation indication message.

Preferably, the apparatus further includes: a first sending module, configured to send, to the other base station, a response message that receives the CoMP cooperation cancellation indication message.

Preferably, the apparatus further includes: a third receiving module, configured to receive a CoMP cooperation cancellation request message from another base station, where the CoMP cooperation cancellation request message carries at least a cell of at least one cell of the other base station And a second sending module, configured to determine whether to agree to cancel CoMP cooperation of the cells of the other base station, and send a response message carrying the determination result to the other base station, where the response message is used to indicate the other base station CoMP cooperation of all or a part of cells in at least one cell of the other base stations is cancelled/held.

Preferably, the apparatus further includes: a fourth receiving module, configured to receive a CoMP cooperation cancellation notification message from another base station, where the CoMP cooperation cancellation notification message carries a cell identifier of at least one cell of the other base station And the CoMP cooperation cancellation notification message is used to notify the base station that the other base station has/will soon cancel the CoMP cooperation of the at least one cell.

According to another aspect of the embodiments of the present invention, a base station is provided, including: the cooperative multipoint transmission processing device described above.

According to another aspect of the present invention, there is also provided a coordinated multipoint transmission processing system comprising: the above base station and the other base stations described above.

According to another aspect of the present invention, a coordinated multipoint transmission processing method is further provided, including: the base station sends a CoMP cooperation indication message to another base station, where the CoMP cooperation indication message carries at least one of the following Information: CoMP hypothesis information of one or more cells of the other base station, an enforcement flag for indicating whether to perform adjustment of the radio time-frequency resource of the one or more cells according to the CoMP hypothesis information; wherein The CoMP cooperation indication message is used to instruct the other base station to process radio time-frequency resources of the one or more cells.

According to another aspect of the present invention, a coordinated multipoint transmission processing apparatus is provided, which is located in a base station, and includes: a sending module, configured to send a CoMP cooperation indication message to another base station, where the CoMP cooperation indication message Carrying information of at least one of the following: CoMP hypothesis information of one or more cells of the other base station, indicating whether to enforce radio time-frequency resources of the one or more cells according to the CoMP hypothesis information And an enhanced enforcement flag, where the CoMP cooperation indication message is used to instruct the other base station to process radio time-frequency resources of the one or more cells.

According to another aspect of the present invention, a base station is further provided, comprising: the foregoing coordinated multipoint transmission processing apparatus including a transmitting module configured to send a CoMP cooperation indication message to other base stations.

According to the embodiment of the present invention, the base station receives the CoMP cooperation indication message from the other base station, where the CoMP cooperation indication message carries information of at least one of the following: CoMP hypothesis information of one or more cells of the base station, used to indicate whether Enforcing an enforcement flag for performing adjustment of radio time-frequency resources of one or more cells according to CoMP hypothesis information; the base station processes one or more according to the CoMP cooperation indication message The method of radio time-frequency resources of the cell solves the problem that the related technology does not provide CoMP cooperation information between base stations, and achieves the effect of being able to perform CoMP cooperation and achieve expected gain in both distributed and centralized situations.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a schematic flow chart of a cooperative multipoint transmission processing method according to an embodiment of the present invention;

2 is a schematic structural diagram of a coordinated multipoint transmission processing apparatus according to an embodiment of the present invention;

3 is a schematic diagram of a process interaction of a centralized CoMP collaborative enforcement and cancellation indication according to a preferred embodiment of the present invention;

4 is a schematic diagram of a process interaction of a centralized CoMP collaborative enforcement and cancellation request in accordance with a preferred embodiment of the present invention;

5 is a schematic diagram of a process interaction of a distributed CoMP collaboration enforcement and cancellation indication according to a preferred embodiment of the present invention;

6 is a schematic diagram of a process interaction of distributed CoMP collaboration enforcement and cancellation notification in accordance with a preferred embodiment of the present invention.

detailed description

It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments.

The steps illustrated in the flowchart of the figures may be performed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, may differ from this The steps shown are performed in the order shown or described.

The embodiment provides a coordinated multi-point transmission processing method. FIG. 1 is a schematic flowchart of a coordinated multi-point transmission processing method according to an embodiment of the present invention. As shown in FIG. 1 , the flow includes the following steps:

Step S102: The base station receives a CoMP cooperation indication message from another base station, where the CoMP cooperation indication message carries information of at least one of: CoMP hypothesis information of one or more cells of the base station, and is used to indicate whether to be forced according to CoMP hypothesis Enforcement flag for performing adjustment of radio time-frequency resources of one or more cells;

Step S104: The base station processes the radio time-frequency resources of one or more cells according to the CoMP cooperation indication message.

Through the foregoing steps, the CoMP cooperation indication message carrying the CoMP hypothesis information and the enforcement flag is used between the base stations, so that the target base station can process the radio time-frequency resources of the corresponding cell according to the CoMP cooperation indication message, thereby providing a type between the base stations. The method for interacting with CoMP collaboration information solves the problem in the related art that does not provide how to exchange CoMP collaboration information between base stations. The method is compatible with existing distributed or centralized cooperative multi-point transmission systems, thereby achieving CoMP cooperation and achieving the desired gain in both distributed and centralized situations.

Preferably, in the foregoing step S104, the base station may determine whether the impact of adjusting the radio time-frequency resource on one or more cells is acceptable; if the judgment result is acceptable, the base station adjusts one or more according to the CoMP cooperation indication message. Radio time-frequency resources of each cell.

Preferably, in the case that the foregoing determination result is unacceptable, the step S104 may further include: the base station sends a response message rejecting the adjustment of the radio time-frequency resource to the other base station, where the response message may carry the refusal to adjust the radio. The reason value of the frequency resource.

Preferably, in a case where a plurality of base stations establish coordinated multipoint transmission, the base station has multiple ways to exit the established coordinated multipoint transmission system.

For example, the base station may exit the coordinated multi-point transmission system according to the indications of the other base stations: the base station receives the CoMP cooperation cancellation indication message from the other base station, where the CoMP cooperation cancellation indication message carries the cell identifier of one or more cells of the base station; CoMP collaboration of one or more cells is cancelled according to the CoMP cooperation cancellation indication message. For example, the Muting of the cell time-frequency resource according to the CoMP hypothesis information is cancelled before.

Preferably, after the base station receives the CoMP cooperation cancellation indication message from other base stations, the base station may further send a response message to the other base station that receives the CoMP cooperation cancellation indication message.

For another example, the base station may allow or reject the request of the other base station to exit the coordinated multipoint transmission system: the base station receives the CoMP cooperation cancellation request message from the other base station, where the CoMP cooperation cancellation request message carries at least one cell of the other base station. Identification; the base station determines whether to agree to cancel the cell of other base stations CoMP cooperates, and sends a response message carrying the determination result to other base stations, wherein the response message is used to instruct other base stations to cancel/hold CoMP cooperation of all or a part of cells in at least one cell of other base stations.

For another example, the other base station advertises the relevant base station if the base station has exited or is about to exit the coordinated multi-point transmission system: the base station receives the CoMP cooperation cancellation notification message from the other base station, where the CoMP cooperation cancellation notification message carries at least the other base stations. The cell identifier of a cell, the CoMP cooperation cancellation notification message is used to notify the base station of the message that the other base station has/will soon cancel the CoMP cooperation of the at least one cell.

Preferably, the enforcement flag carried in the CoMP cooperation indication message is used to indicate whether all cells in one or more cells are forced to perform adjustment of the radio time-frequency resource according to the CoMP hypothesis information, or the enforcement flag carried in the CoMP cooperation indication message. For indicating whether each of the one or more cells respectively enforces adjustment of the radio time-frequency resource according to the CoMP hypothesis information.

Correspondingly, in step S104, the base station determines whether the impact of adjusting the radio time-frequency resource on all or one of the one or more cells is acceptable; if the judgment result is acceptable, the base station according to the CoMP cooperation indication message Adjusting the radio time-frequency resource of all or one of the cells in the one or more cells; and the base station sends a response message rejecting the adjustment of the radio time-frequency resource to the other base station, where the response message may carry the refusal to adjust the radio time-frequency The cell information of the resource and the corresponding cause value.

The embodiment further provides a cooperative multi-point transmission processing device, which is located in a base station, and is used to implement the cooperative multi-point transmission processing method, and the specific implementation process of the cooperative multi-point transmission processing device described in the device embodiment is It has been described in detail in the embodiments, and details are not described herein again.

2 is a schematic structural diagram of a coordinated multipoint transmission processing apparatus according to an embodiment of the present invention. As shown in FIG. 2, the apparatus includes: a first receiving module 202 and a processing module 204, wherein the first receiving module 202 is configured to receive a CoMP cooperation indication message from another base station, where the CoMP cooperation indication message carries information of at least one of: CoMP hypothesis information of one or more cells of the base station, used to indicate whether to enforce one or more according to CoMP hypothesis information Enforcement criteria for adjustment of radio time-frequency resources of cells The processing module 204 is coupled to the first receiving module 202 and configured to process wireless time-frequency resources of one or more cells according to the CoMP cooperation indication message.

The modules and units involved in the embodiments of the present invention may be implemented by software or by hardware. The described modules and units in this embodiment may also be disposed in a processor. For example, the processor may include a first receiving module 202 and a processing module 204. The names of these modules do not constitute a limitation on the module itself in some cases. For example, the first receiving module 202 may also be described as "a module configured to receive CoMP cooperation indication messages from other base stations."

Preferably, the processing module 204 includes: a determining unit 2042, configured to determine whether the impact of adjusting the wireless time-frequency resource on the one or more cells is acceptable; the adjusting unit 2044 is coupled to the determining unit 2042, and is configured to adjust one according to the CoMP cooperation indication message. Or wireless time-frequency resources of multiple cells.

Preferably, the processing module 204 further includes: the sending unit 2046 is coupled to the determining unit 2042, configured to send a response message rejecting the adjustment of the wireless time-frequency resource to the other base station, where the response message carries the reason for rejecting the adjustment of the wireless time-frequency resource value.

Preferably, the apparatus further includes: a second receiving module 206, configured to receive a CoMP cooperation cancellation indication message from another base station, where the CoMP cooperation cancellation indication message carries a cell identifier of one or more cells of the base station; 208 is coupled to the second receiving module 206, configured to cancel CoMP cooperation of one or more cells according to the CoMP cooperation cancellation indication message.

Preferably, the apparatus further comprises: the first sending module 210 is coupled to the canceling module 208, and configured to send a response message to the other base station that receives the CoMP cooperation cancellation indication message.

Preferably, the apparatus further includes: a third receiving module 212, configured to receive a CoMP cooperation cancellation request message from another base station, where the CoMP cooperation cancellation request message carries at least one cell identifier of at least one cell of another base station; The sending module 214 is coupled to the third receiving module 212, configured to determine whether to agree to cancel the CoMP cooperation of the cells of the other base stations, and send a response message carrying the determination result to the other base station, where the response message is used to indicate that the other base station cancels/ CoMP cooperation of all or a part of cells in at least one cell of other base stations is maintained.

Preferably, the apparatus further includes: a fourth receiving module 216, configured to receive a CoMP cooperation cancellation notification message from another base station, where the CoMP cooperation cancellation notification message carries at least one small of other base stations The cell identity of the zone, the CoMP cooperation cancellation notification message is used to notify the base station of the message that the other base station has/will soon cancel the CoMP cooperation of the at least one cell.

Preferably, the first to fourth receiving modules may be combined into one module or implemented by the same receiving device; the first to second sending modules may be combined into one module or implemented by the same transmitting device. .

The embodiment further provides a base station, which includes the cooperative multipoint transmission processing device described above.

The embodiment further provides a coordinated multi-point transmission processing system, which system includes: a plurality of base stations, which are the base stations and other base stations described in the foregoing embodiments.

Corresponding to the above-mentioned coordinated multi-point transmission processing method, apparatus, and base station based on the received CoMP cooperation indication message, the corresponding processing method and apparatus for the opposite end, and the base station, that is, the coordinated multi-point based on transmitting the CoMP cooperation indication message, are also provided in this embodiment. For the corresponding processing in the foregoing embodiments, the corresponding processing in the foregoing embodiments may be described with reference to the foregoing method, the device, and the base station, which are based on the received CoMP cooperation indication message, and are not described herein again.

The embodiment further provides a coordinated multi-point transmission processing method, including: the base station sends a CoMP cooperation indication message to another base station, where the CoMP cooperation indication message carries at least one of the following information: one or more of the other base stations CoMP hypothesis information of the cell, an enforcement flag for indicating whether to perform adjustment of radio time-frequency resources of one or more cells according to CoMP hypothesis information; wherein the CoMP cooperation indication message is used to instruct other base stations to process one or more cells Wireless time-frequency resources.

The embodiment further provides a coordinated multi-point transmission processing device, which is located in the base station, and includes: a sending module, configured to send a CoMP cooperation indication message to another base station, where the CoMP cooperation indication message carries at least one of the following information : CoMP hypothesis information of one or more cells of other base stations, strong for indicating whether to enforce adjustment of radio time-frequency resources of one or more cells according to CoMP hypothesis information The system performs the marking; wherein the CoMP cooperation indication message is used to instruct other base stations to process the wireless time-frequency resources of the one or more cells.

The embodiment further provides a base station, comprising: the foregoing coordinated multi-point transmission processing apparatus including a sending module configured to send a CoMP cooperation indication message to other base stations.

Description and description are made below in conjunction with the preferred embodiments.

The preferred embodiment provides a method for performing and canceling CoMP collaboration, and relates to a method, an apparatus and a system for performing and canceling CoMP collaboration.

The preferred embodiment provides a method for performing and canceling CoMP collaboration, and the method includes at least one of the following features:

A, eNB1 sends a CoMP cooperation indication message to eNB2, carrying at least one of the following: CoMP hypothesis of one or more cells (Cell), whether to enforce the flag; if the flag is mandatory, eNB2 generally must agree and The radio time-frequency resources of the relevant Cell are adjusted according to the requirements of the eNB1. Unless the adjustment of this requirement has a significant impact on the relevant Cell in eNB2, it can be refused and carries a clear reason for rejection.

B. The eNB1 sends a CoMP cooperation cancellation indication message to the eNB2, and carries one or more Cell identifiers (IDs) in the eNB2; after receiving the eNB2, the CoMP cooperation of the related Cell listed in the CoMP cooperation cancellation indication message is cancelled.

C. The eNB1 sends a CoMP cooperation cancellation request message to the eNB2, and carries one or more Cell IDs in the eNB1; after receiving the analysis, the eNB2 decides to agree or reject, and returns a CoMP cooperation cancellation response message to the eNB1; after receiving the agreed response message, the eNB1 receives the response message. , cancel the CoMP collaboration of the relevant Cell listed in the CoMP Collaboration Cancellation Request message.

D. eNB1 sends a CoMP Cooperative Cancellation Notification message to eNB2, carrying one or more Cell IDs in eNB1; before or after this, eNB1 cancels the CoMP cooperation of the relevant Cell listed in the CoMP Cooperative Cancellation Notification message.

Preferably, the flag that is enforced in the CoMP cooperation indication message may be associated with the CoMP hypothesis of all the cells in the message, or may be associated with the CoMP hypothesis of a certain cell.

Preferably, the CoMP cooperation cancellation indication message, the CoMP cooperation cancellation request message, and the CoMP cooperation cancellation notification message may be the same message, and an identifier may be defined in the message to distinguish whether the message is an indication message, a request message, or a notification message.

Preferably, the response message can be returned after receiving the CoMP cooperation cancellation indication message.

Preferably, the request reason may be carried in the CoMP cooperation cancellation request message.

Preferably, after receiving the CoMP cooperation cancellation request message, the CoMP cooperation cancellation response message may be returned to the partially agreed, and the one or more Cell IDs that agree to cancel the CoMP collaboration are carried.

The following embodiments and preferred embodiments are exemplified by a centralized and distributed coordinated multipoint transmission system, respectively.

FIG. 3 is a schematic diagram of a process interaction of a centralized CoMP collaboration enforcement and cancellation indication according to a preferred embodiment of the present invention. As shown in FIG. 3, the process includes the following steps:

In step S302, the eNB3 (set as the CoMP cooperative control node) respectively transmits a CoMP cooperation indication message to the eNB1 and the eNB2, and carries the enforcement flag.

In step S304, eNB1 and eNB2 estimate the possible impact on their own related Cell according to the CoMP cooperation proposal of eNB3. If eNB1 estimates that there is no significant impact on Cell 1, there is no gain or even some negative gain, which is intended to be rejected, but because the indication message has an enforcement flag, it agrees with eNB3's suggestion. eNB2 estimates that there may be a significant impact on Cell 2 (a large number of UEs in Cell 2 may have a Radio Link Failure (RLF)), thus rejecting the recommendation of eNB3.

Step S306, eNB1 sends a response message to eNB3, agrees to the CoMP cooperation proposal of eNB3; eNB2 sends a response message to eNB3, rejects the CoMP cooperation suggestion of eNB3, and rejects the reason (such as a large number of UEs may occur RLF, VIP (VIP) users may RLF, etc. will occur).

Step S308, the eNB1 mutes the radio time-frequency resources in the Cell 1 according to the CoMP cooperation proposal.

In step S310, after receiving the reject message of the eNB2, the eNB3 considers that there is no CoMP cooperation in which the Cell 2 participates, and the overall gain is not large, so it is decided to cancel the current CoMP cooperation.

In step S312, the eNB3 sends a CoMP cooperation cancellation indication message to the eNB1, and carries the ID of the Cell 1.

In step S314, the eNB1 cancels the muting of the related radio time-frequency resources in the cell 1.

4 is a schematic diagram of a process interaction of a centralized CoMP collaboration enforcement and cancellation request according to a preferred embodiment of the present invention. As shown in FIG. 4, the process includes the following steps:

In step S402, the eNB3 (set as the CoMP cooperative control node) respectively sends a CoMP cooperation indication message to the eNB1 and the eNB2, and carries the enforcement flag.

In step S404, eNB1 and eNB2 estimate the possible impact on their own related Cell according to the CoMP cooperation suggestion of eNB3. If eNB1 estimates that there is no significant impact on Cell 1, and may achieve a certain gain, it agrees with the recommendation of eNB3. eNB2 estimates that there is also no significant impact on Cell 2 and therefore agrees with the recommendations of eNB3.

In step S406, the eNB1 and the eNB2 send a response message to the eNB3, and agree to the CoMP cooperation proposal of the eNB3.

In step S408, the eNB1 and the eNB2 respectively perform muting on the radio time-frequency resources in the Cell 1 and the Cell 2 according to the CoMP cooperation proposal.

In step S410, the eNB2 sends a CoMP cooperation cancellation request message to the eNB3, carrying the ID of the Cell 2, and carrying the reason as if there is a VIP entry.

Step S412, after receiving the CoMP cooperation cancellation request message of the eNB2, the eNB3 performs the evaluation according to the information and the like carried in the request message, and considers that it can agree, and considers that the CoMP cooperation without the participation of the Cell 2 is still meaningful, and then decides to agree to the Cell. 2 Exit CoMP collaboration, but other Cell's CoMP collaboration continues.

In step S414, the eNB3 transmits a CoMP cooperation cancellation response message (Agree) to the eNB2, and carries the ID of the Cell 2.

In step S416, the eNB2 cancels the muting of the related radio time-frequency resources in the Cell 2.

FIG. 5 is a schematic diagram of a process interaction of a distributed CoMP collaboration enforcement and cancellation indication according to a preferred embodiment of the present invention. As shown in FIG. 5, the process includes the following steps:

In step S502, the eNB1 sends a CoMP cooperation indication message to the eNB2, and carries an enforcement flag.

In step S504, the eNB2 estimates the possible impact on the own related Cell according to the CoMP cooperation proposal of the eNB1. If eNB2 estimates that there is no significant impact on Cell 2, it agrees with the recommendation of eNB1.

In step S506, the eNB2 sends a response message to the eNB1, and agrees to the CoMP cooperation proposal of the eNB1.

Step S508, the eNB2 mutes the radio time-frequency resources in the Cell 2 according to the CoMP cooperation proposal.

In step S510, the eNB1 sends a CoMP cooperation cancellation indication message to the eNB2, and carries the ID of the Cell 2.

In step S512, the eNB2 cancels the muting of the related radio time-frequency resources in the Cell 2.

FIG. 6 is a schematic diagram of a process interaction of a distributed CoMP collaboration enforcement and cancellation notification according to a preferred embodiment of the present invention. As shown in FIG. 6, the process includes the following steps:

In step S602, the eNB1 sends a CoMP cooperation indication message to the eNB2, and carries an enforcement flag.

In step S604, the eNB2 estimates the possible impact on the own related Cell according to the CoMP cooperation proposal of the eNB1. If eNB2 estimates that there is no significant impact on Cell 2, it agrees with the recommendation of eNB1.

In step S606, the eNB2 sends a response message to the eNB1, and agrees to the CoMP cooperation proposal of the eNB1.

Step S608, the eNB2 mutes the radio time-frequency resources in the Cell 2 according to the CoMP cooperation proposal.

In step S610, the eNB2 sends a CoMP cooperation cancellation notification message to the eNB1, and carries the ID of the Cell 2.

In step S612, the eNB2 cancels the muting of the related radio time-frequency resources in the Cell 2.

Industrial applicability

According to the embodiment of the present invention, the base station receives the CoMP cooperation indication message from the other base station, where the CoMP cooperation indication message carries information of at least one of the following: CoMP hypothesis information of one or more cells of the base station, used to indicate whether Enforcing an enforcement flag for performing adjustment of radio time-frequency resources of one or more cells according to CoMP hypothesis information; the method for the base station to process radio time-frequency resources of one or more cells according to the CoMP cooperation indication message, and solving the related art is not provided The problem of inter-base station interaction of CoMP collaboration information achieves the effect of being able to perform CoMP cooperation and achieve expected gain in both distributed and centralized situations.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in a storage device by a computing device, or they may be fabricated into individual integrated circuit modules, or Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A cooperative multi-point transmission processing method includes:

The base station receives the coordinated multi-point transmission CoMP cooperation indication message from the other base station, where the CoMP cooperation indication message carries information of at least one of: CoMP hypothesis information of one or more cells of the base station, for indicating Whether to enforce an enforcement flag of adjusting the radio time-frequency resource of the one or more cells according to the CoMP hypothesis information;

The base station processes the radio time-frequency resources of the one or more cells according to the CoMP cooperation indication message.
The method according to claim 1, wherein the processing, by the base station, the radio time-frequency resources of the one or more cells according to the CoMP cooperation indication message comprises:

The base station determines whether it is acceptable to adjust the impact of the radio time-frequency resource on the one or more cells;

When the judgment result is acceptable, the base station adjusts the radio time-frequency resource of the one or more cells according to the CoMP cooperation indication message.
The method according to claim 2, wherein, in a case where the result of the determination is unacceptable, the method further comprises:

The base station sends a response message rejecting the adjustment of the radio time-frequency resource to the other base station, where the response message carries a reason value that refuses to adjust the radio time-frequency resource.
The method of claim 1 wherein the method further comprises:

The base station receives a CoMP cooperation cancellation indication message from another base station, where the CoMP cooperation cancellation indication message carries a cell identifier of one or more cells of the base station;

The base station cancels CoMP cooperation of the one or more cells according to the CoMP cooperation cancellation indication message.
The method of claim 4, wherein after the base station receives the CoMP cooperation cancellation indication message from the other base station, the method further includes:

The base station sends a response message to the other base station that receives the CoMP cooperation cancellation indication message.
The method of claim 1 wherein the method further comprises:

The base station receives a CoMP cooperation cancellation request message from another base station, where the CoMP cooperation cancellation request message carries at least one cell identifier of at least one cell of the other base station;

Determining, by the base station, whether to cancel the CoMP cooperation of the cells of the other base station, and sending a response message carrying the determination result to the other base station, where the response message is used to instruct the other base station to cancel/hold the other CoMP cooperation of all or a part of cells in at least one cell of the base station.
The method according to claim 6, wherein the CoMP cooperation cancellation request message further carries a cause value of the other base station requesting cancellation of CoMP cooperation of all or a part of cells in the at least one cell.
The method of claim 1 wherein the method further comprises:

The base station receives a CoMP cooperation cancellation notification message from another base station, where the CoMP cooperation cancellation notification message carries a cell identifier of at least one cell of the other base station, where the CoMP cooperation cancellation notification message is used to The other base station has notified/will soon cancel the message of CoMP cooperation of the at least one cell to the base station.
The method according to any one of claims 1 to 8, wherein the enforcement flag carried in the CoMP cooperation indication message is used to indicate whether all cells in the one or more cells are mandatory according to the The CoMP hypothesis information performs the adjustment of the radio time-frequency resource, or the enforcement flag carried in the CoMP cooperation indication message is used to indicate whether each of the one or more cells is forced according to the CoMP hypothesis information, respectively. Perform adjustments to the wireless time-frequency resources.
The method according to claim 9, wherein the CoMP cooperation cancellation indication message, the CoMP cooperation cancellation request message, and the CoMP cooperation cancellation notification message are carried in the same type of message, and are distinguished by the predetermined identifier carried in the same type of message. .
A coordinated multi-point transmission processing device, located in a base station, includes:

a first receiving module, configured to receive a coordinated multi-point transmission CoMP cooperation indication message from another base station, where the CoMP cooperation indication message carries information of at least one of: CoMP of one or more cells of the base station The hypothesis information, an enforcement flag for indicating whether to perform adjustment of the radio time-frequency resource of the one or more cells according to the CoMP hypothesis information;

And a processing module, configured to process the wireless time-frequency resource of the one or more cells according to the CoMP cooperation indication message.
The apparatus of claim 11 wherein said processing module comprises:

a determining unit, configured to determine whether it is acceptable to adjust an impact of the wireless time-frequency resource on the one or more cells;

And an adjusting unit, configured to adjust the wireless time-frequency resource of the one or more cells according to the CoMP cooperation indication message.
The apparatus of claim 12, wherein the processing module further comprises:

And a sending unit, configured to send a response message rejecting the adjustment of the radio time-frequency resource to the other base station, where the response message carries a reason value that refuses to adjust the radio time-frequency resource.
The apparatus of claim 11 wherein said apparatus further comprises:

a second receiving module, configured to receive a CoMP cooperation cancellation indication message from another base station, where the CoMP cooperation cancellation indication message carries a cell identifier of one or more cells of the base station;

And canceling the module, configured to cancel CoMP collaboration of the one or more cells according to the CoMP cooperation cancellation indication message.
The apparatus of claim 14 wherein said apparatus further comprises:

The first sending module is configured to send, to the other base station, a response message that receives the CoMP cooperation cancellation indication message.
The apparatus of claim 11 wherein said apparatus further comprises:

a third receiving module, configured to receive a CoMP cooperation cancellation request message from another base station, where the CoMP cooperation cancellation request message carries at least a cell identifier of at least one cell of the other base station;

a second sending module, configured to determine whether to agree to cancel CoMP cooperation of the cells of the other base station, and send a response message carrying the determination result to the other base station, where the response message is used to indicate that the other base station cancels/ CoMP coordination of all or a portion of cells in at least one cell of the other base stations is maintained.
The apparatus according to claim 16, wherein the CoMP cooperation cancellation request message further carries a cause value of the other base station requesting cancellation of CoMP cooperation of all or a part of cells in the at least one cell.
The apparatus of claim 11 wherein said apparatus further comprises:

a fourth receiving module, configured to receive a CoMP cooperation cancellation notification message from another base station, where the CoMP cooperation cancellation notification message carries a cell identifier of at least one cell of the other base station, where the CoMP cooperation cancellation notification message is used Notifying the base station of a message that the other base station has/will soon cancel CoMP cooperation of the at least one cell.
The apparatus according to any one of claims 11 to 18, wherein the enforcement flag carried in the CoMP cooperation indication message is used to indicate whether all cells in the one or more cells are mandatory according to the The CoMP hypothesis information performs the adjustment of the radio time-frequency resource, or the enforcement flag carried in the CoMP cooperation indication message is used to indicate whether each of the one or more cells is forced according to the CoMP hypothesis information, respectively. Perform adjustments to the wireless time-frequency resources.
The device according to claim 19, wherein the CoMP cooperation cancellation indication message, the CoMP cooperation cancellation request message, and the CoMP cooperation cancellation notification message are carried in the same type of message, and are distinguished by the predetermined identifier carried in the same type of message. .
A base station comprising: the coordinated multipoint transmission processing device according to any one of claims 11 to 20.
A cooperative multipoint transmission processing system comprising: the base station according to claim 21 and the other base stations according to any one of claims 11 to 20.
A cooperative multi-point transmission processing method includes:

The base station sends a coordinated multi-point transmission CoMP cooperation indication message to another base station, where the CoMP cooperation indication message carries information of at least one of: CoMP hypothesis information of one or more cells of the other base station, for indicating Whether to enforce an enforcement flag of the adjustment of the radio time-frequency resource of the one or more cells according to the CoMP hypothesis information; wherein the CoMP cooperation indication message is used to instruct the other base station to process the one or more The radio time-frequency resources of the cell.
A coordinated multi-point transmission processing device, located in a base station, includes:

a sending module, configured to send a coordinated multi-point transmission CoMP cooperation indication message to another base station, where the CoMP cooperation indication message carries information of at least one of: CoMP hypothesis information of one or more cells of the other base station And an enforcement flag for indicating whether to perform adjustment of the radio time-frequency resource of the one or more cells according to the CoMP hypothesis information; wherein the CoMP cooperation indication message is used to instruct the other base station to process the Radio time-frequency resources of one or more cells.
A base station comprising: the coordinated multipoint transmission processing device of claim 24.