Communication system based on distributed multiple input multiple output (MIMO)

Abstract

The invention provides a communication system based on distributed MIMO, and belongs to the technical field of communication. The communication system comprises at least one control unit (CU), a plurality of transmission receiving points (TRP) and at least one terminal device, the at least one CU is used for scheduling a plurality of TRPs; the CU corresponds to a TRP cluster, the TRP cluster comprises at least two TRP, and the TRP in the TRP cluster can be scheduled by the CU corresponding to the TRP cluster; the terminal equipment corresponds to a TRP group, and the TRP providing the communication service for the same terminal equipment at the same time belongs to the same TRP group; the TRP group comprises at least one TRP, and the TRP included in the TRP group belongs to the same TRP cluster or different TRP clusters; the number of the TRP included in the TRP group can be dynamically changed. According to the communication system based on the distributed MIMO, frequent switching can be avoided, and the communication quality and the communication stability are ensured.

Description

A communication system based on distributed multiple-input multiple-output (MIMO) Technical Field

[0001] The present disclosure relates to the field of communication technology, and in particular to a communication system based on distributed multiple-user multiple input multiple output (MIMO). Background Art

[0002] In a cellular network, when a terminal device moves across cells, frequent cell switching is usually required, which affects communication stability.

[0003] Summary of the Invention

[0004] The distributed MIMO-based communication system proposed in the present disclosure is used to solve the problem of frequent cell switching.

[0005] In a first aspect, an embodiment of the present disclosure provides a communication system based on distributed MIMO, including at least one control unit CU, multiple transmission reception points TRP, and at least one terminal device;

[0006] The at least one CU is used to schedule multiple TRPs;

[0007] The CU corresponds to a TRP cluster, the TRP cluster includes at least two TRPs, and the TRPs in the TRP cluster can be scheduled by the CU corresponding to the TRP cluster;

[0008] The terminal device corresponds to a TRP group, wherein TRPs that provide communication services to the same terminal device at the same time belong to the same TRP group; the TRP group includes at least one TRP, and the TRPs included in the TRP group belong to the same TRP cluster or different TRP clusters; the number of TRPs included in the TRP group can change dynamically.

[0009] In the distributed MIMO-based communication system provided by the present disclosure, since the TRPs in the TRP group providing communication services for the terminal device can belong to different TRP clusters, cross-cluster collaboration is achieved, and the terminal device does not have to switch to a certain TRP cluster before using the TRP in the TRP cluster, thereby eliminating the need for frequent switching as in cellular networks, ensuring communication stability. In addition, the number of TRPs included in the TRP group can change dynamically, so when providing communication services to the terminal device based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring communication quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and / or additional aspects and advantages of the present disclosure will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0011] FIG1 is a schematic diagram of the architecture of a distributed MIMO-based communication system provided by an embodiment of the present disclosure;

[0012] FIG2 is a flow chart of a communication method provided by another embodiment of the present disclosure;

[0013] FIG3 is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0014] FIG4 is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0015] FIG5 is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0016] FIG6 a is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0017] FIG6 b is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0018] FIG6c is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0019] FIG7 is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0020] FIG8 is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0021] FIG9 is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0022] FIG10 is a schematic diagram of a process of dynamically changing TRPs included in a TRP group provided by one embodiment of the present disclosure;

[0023] FIG11 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0024] FIG12 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0025] FIG13 is a schematic structural diagram of a communication device provided by an embodiment of the present disclosure;

[0026] FIG14 is a schematic structural diagram of a terminal device provided in an embodiment of the present application;

[0027] FIG15 is a schematic structural diagram of a chip provided in accordance with an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0029] The terms used in the embodiments of the present disclosure are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present disclosure. The singular forms "a," "an," and "the" used in the embodiments of the present disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" as used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0030] It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if" and "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0031] The embodiments of the present disclosure are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, and should not be understood as limiting the present disclosure.

[0032] To facilitate understanding, the terms involved in this application are first introduced.

[0033] 1. Transmission reception point (TRP)

[0034] Used to transmit data to or receive data from terminal devices.

[0035] 2. Control Unit (CU)

[0036] A monitoring client unit (CU) is used to execute computer instructions or monitor the system's ClientUnit. The CU is responsible for program flow management. The CU typically connects to multiple Transmission Relays (TRPs) and aggregates TRP information to the CU, enabling coordinated scheduling of radio resources. CUs exchange information via optical fiber or the core network.

[0037] FIG1 is a schematic diagram of a distributed MIMO-based communication system provided by an embodiment of the present disclosure. The communication system may include at least one CU, multiple TRPs, and at least one terminal device; wherein the number and form of devices shown in FIG1 are for example only and do not constitute a limitation on the embodiment of the present disclosure. In actual applications, one or more CUs, or two or more TRPs, or one or more terminal devices may be included. The communication system shown in FIG1 is taken as an example including two CUs, eight TRPs, and one terminal device.

[0038] The terminal device in the embodiments of the present disclosure can be an entity on the user side for receiving or transmitting signals, such as a mobile phone. The terminal device can also be called a terminal device (terminal), user equipment (UE), mobile station (MS), mobile terminal device (MT), etc. The UE can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving (self-driving), a wireless terminal device in remote medical surgery (remote medical surgery), a wireless terminal device in a smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in a smart city (smart city), a wireless terminal device in a smart home (smart home), etc. The embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the UE.

[0039] Among them, in one embodiment of the present disclosure, the communication system includes at least one CU, and the CU can schedule two or more TRPs (such as wireless resources that can schedule TRPs). All TRPs that the CU can schedule can correspond to a TRP cluster, or some TRPs that a CU can schedule correspond to a TRP cluster. In one example, a CU can schedule two or more adjacent TRPs, and these two or more adjacent TRPs constitute a TRP cluster. In other words, a TRP cluster can include two or more TRPs. It should be noted that the TRP cluster here is only a name provided for the explanation scheme, and can also be expressed in other words, and this application does not limit this.

[0040] For example, as shown in Figure 1, the communication system based on distributed MIMO includes two CUs, namely CU#1 and CU#2. CU#1 corresponds to TRP cluster #1, and CU#2 corresponds to TRP cluster #2. The connection line between the CU and a TRP in Figure 1 indicates that: the CU can schedule the TRP, then the TRPs in the TRP cluster #1 can all be scheduled by CU#1, and the TRPs in the TRP cluster #2 can all be scheduled by CU#2.

[0041] Optionally, in one embodiment of the present disclosure, a TRP may also be scheduled by one or more CUs. For example, a TRP may be scheduled by at least two CUs in a time division or frequency division manner; specifically, a TRP may be scheduled by at least two CUs in a time division manner, including: at different time domain positions, the TRP may be scheduled by different CUs. For example: at a first time domain position, the TRP may be scheduled by CU#1, and at a second time domain position, the TRP may be scheduled by CU#2. Optionally, a TRP may be scheduled by at least two CUs in a frequency division manner, including: at different frequency domain positions, the TRP may be scheduled by different CUs. For example, at a first frequency domain position, the TRP may be scheduled by CU#1, and at a second frequency domain position, the TRP may be scheduled by CU#2.

[0042] Optionally, in one embodiment of the present disclosure, the terminal device can communicate with one or more TRPs at the same time. In one example, one or more TRPs communicating with the terminal device may correspond to a TRP group (TRP group). In other words, TRPs that provide communication services to the same terminal device at the same time belong to a TRP group; the TRP group may include at least one TRP. In one example, the TRPs included in the TRP group belong to the same TRP cluster or different TRP clusters. It should be noted that the TRP group here is only a name provided for the explanation scheme, and can also be expressed in other words, and this application does not limit this.

[0043] For example, in one embodiment of the present disclosure, as shown in FIG1 , the TRPs included in the same TRP group belong to different TRP clusters. Specifically, TRP#4, TRP#5, and TRP#6 in FIG1 simultaneously provide communication services to terminal devices, and these TRP#4, TRP#5, and TRP#6 belong to the same TRP group. However, the TRP cluster to which TRP#4 belongs is different from the TRP cluster to which TRP#5 and TRP#6 belong. TRP#4 belongs to TRP cluster #1, and TRP#5 and TRP#6 belong to TRP cluster #2.

[0044] For example, in another embodiment of the present disclosure, the TRPs included in the same TRP group may also belong to the same TRP cluster. For example, TRP#5, TRP#6, and TRP#8 in Figure 1 can simultaneously provide communication services to terminal devices. These TRP#5, TRP#6, and TRP#8 may belong to the same TRP group. Among them, TRP#5, TRP#6, and TRP#8 all belong to TRP cluster #2.

[0045] Optionally, in one embodiment of the present disclosure, the TRPs included in the TRP group can be changed dynamically.

[0046] In one embodiment of the present disclosure, the dynamically changing TRP in the TRP group can be determined by the CU. Specifically, the terminal device can be used to: determine at least one first TRP, monitor and measure the reference signal of the first TRP to obtain the measurement result, and then send the measurement result of the reference signal of the first TRP to the CU corresponding to the first TRP. After receiving the measurement result of the reference signal of the first TRP, the CU determines at least one second TRP based on the measurement result of the reference signal of the first TRP, and the second TRP constitutes the TRP group. The above-mentioned first TRP can be: a TRP whose distance from the terminal device is less than a first preset threshold, that is, the first TRP is a TRP adjacent to the terminal device. Optionally, at least one first TRP can be scheduled by different CUs, and the terminal device can then send the measurement result of the first TRP to multiple CUs corresponding to the first TRP. The above-mentioned second TRP is: a TRP determined by the CU to provide communication services to the terminal device. Different second TRPs can belong to the same TRP cluster or different TRP clusters.

[0047] Optionally, in one embodiment of the present disclosure, the terminal device may periodically send the measurement result of the reference signal of the first TRP to the CU, or may send the measurement result of the reference signal of the first TRP to the CU when a preset condition is met. The preset condition may include: the reference signal communication quality of the TRP currently serving the terminal device is poor (such as lower than a specific value), and / or the communication quality of the reference signal of the first TRP is higher than the reference signal communication quality of the TRP currently serving the terminal device.

[0048] Optionally, in one embodiment of the present disclosure, when the terminal device sends the measurement result of the reference signal of the first TRP to the CU, the measurement result may be sent to the CU that can schedule the first TRP corresponding to the measurement result through the first TRP corresponding to the measurement result. In one example, the first TRP may be scheduled by multiple CUs, then the terminal device sends the measurement result of the reference signal of the first TRP to multiple CUs corresponding to the first TRP, and these multiple CUs respectively obtain the measurement results of the reference signals of different first TRPs. There will be a main CU among the multiple CUs, and the other CUs except the main CU in the multiple CUs should aggregate the measurement results of the reference signals of the first TRP obtained by themselves to the main CU, so that the main CU can subsequently determine the second TRP based on the measurement results of the reference signals of all the first TRPs. The main CU can be understood as: a CU used to determine the second TRP among the multiple CUs that receive the measurement results; optionally, the main CU can be any CU among the multiple CUs that receive the measurement results.

[0049] Optionally, in one embodiment of the present disclosure, when determining the second TRP, the CU may select a TRP with better communication quality from the first TRP as the second TRP based on the measurement result of the reference signal of the first TRP, and form a TRP group with the second TRP. For example, the CU may use at least one of the following methods to determine the second TRP. Specifically, the CU may also be used to:

[0050] Determine the first TRP whose measurement result of the reference signal is greater than the second preset threshold as the second TRP; and / or

[0051] The measurement results of the reference signal of the first TRP are sorted in order from best to worst, and the first TRP corresponding to the first predetermined value of measurement results in the sorted measurement results is determined as the second TRP.

[0052] The first preset threshold, the second preset threshold, and the predetermined value mentioned above may all be pre-set.

[0053] Optionally, in one embodiment of the present disclosure, when the second TRP determined by the CU belongs to the same TRP cluster, and the TRP cluster to which the second TRP belongs is the TRP cluster corresponding to the CU itself, and at the same time, the CU can schedule all the second TRPs at the current time domain position and / or the current frequency domain position, or when the second TRP determined by the CU belongs to different TRP clusters, but the CU can schedule all the second TRPs at the current time domain position and / or the current frequency domain position, then the CU can be used to: directly schedule the second TRP to form a TRP group to provide communication services for the terminal device.

[0054] Optionally, in one embodiment of the present disclosure, when the second TRP determined by the CU belongs to different TRP clusters, and at the same time, in the determined second TRP, there is a part of the second TRP that the CU cannot schedule at the current time domain position and / or the current frequency domain position, then the CU can be used to: determine the CU that can schedule the part of the second TRP, and send indication information to the CU that can schedule the part of the second TRP, and the indication information is used to instruct the CU that can schedule the part of the second TRP: schedule the part of the second TRP to provide communication services for the terminal device.

[0055] Among them, in one embodiment of the present disclosure, different CUs can share information through mutual communication. Based on the shared information, the CU can determine the CU that can schedule this part of the second TRP, and then different CUs can collaboratively schedule TRPs in different TRP clusters to form a TRP group.

[0056] Optionally, in one embodiment of the present disclosure, different CUs may communicate with each other through a core network (CN), or may communicate with each other through optical fibers, or may communicate with each other through air interfaces.

[0057] Optionally, in one embodiment of the present disclosure, the information shared between CUs may include: identifiers of TRPs that the CUs can schedule. That is, the CU will notify other CUs which TRPs it can schedule.

[0058] Optionally, in one embodiment of the present disclosure, the information shared between CUs may further include at least one of the following:

[0059] The target time domain position corresponding to the TRP that the CU can schedule; the target time domain position is used to indicate: at the target time domain position, the CU can schedule the TRP;

[0060] The target frequency domain position corresponding to the TRP that the CU can schedule; the target frequency domain position is used to indicate: at the target frequency domain position, the CU can schedule the TRP.

[0061] That is, the CU will inform other CUs which TRPs it can schedule at which time domain positions and / or which frequency domain positions.

[0062] In addition, in one embodiment of the present disclosure, the information shared between CUs may also include: terminal devices served by the TRP that can be scheduled by the CU.

[0063] Based on the above, it can be seen that the dynamic change of the TRP group is actually caused by the change of the second TRP corresponding to the terminal device, and the second TRP is actually the TRP with better communication quality in the vicinity of the terminal device. Based on this, when the terminal device moves, or when the channel conditions of the terminal device change, it will cause the second TRP corresponding to the terminal device to change, and then the TRP group providing services for the terminal device will also change. Therefore, in one embodiment of the present disclosure, the TRP included in the above-mentioned TRP group can dynamically change and include at least one of the following:

[0064] The TRPs included in the TRP group change dynamically as the terminal device moves;

[0065] The TRPs contained in the TRP group change dynamically as the channel conditions of the terminal device change.

[0066] Optionally, in another embodiment of the present disclosure, the TRPs included in the TRP group may also change dynamically as the service requirements of the terminal device change. The service requirements may be communication quality or communication efficiency, and different services correspond to different service requirements. When the service requirements of the current service of the terminal device are low, in order to save resources, the TRP group corresponding to the terminal device may include fewer TRPs. If the terminal device switches to a service with higher service requirements, the number of TRPs in the TRP group corresponding to the terminal device should be increased to meet the service requirements, which will cause the TRPs in the TRP group to change dynamically.

[0067] It should be noted that the aforementioned "situations causing dynamic changes in TRP within a TRP group" are merely examples. Of course, other situations may also cause dynamic changes in TRP within a TRP group. It should be understood that such scenarios causing dynamic changes in TRP within a TRP group are also within the scope of protection of this disclosure.

[0068] Optionally, in one embodiment of the present disclosure, the CU may also be configured to send a notification message to the terminal device when a TRP in the TRP group changes. The notification message may indicate at least one of the following:

[0069] identification of the TRPs that changed in the TRP group;

[0070] The communication resources between the terminal device and the changed TRP in the TRP group, which communication resources can be, for example, a beam identifier.

[0071] Optionally, in one embodiment of the present disclosure, the TRPs included in the TRP cluster corresponding to the CU may be fixed. In another embodiment of the present disclosure, the TRPs included in the TRP cluster corresponding to the CU may also change dynamically.

[0072] In one embodiment of the present disclosure, the dynamic change of the TRP included in the TRP cluster may be caused by the dynamic change of the TRP included in the TRP group. In particular, when the TRP included in the TRP group changes dynamically, if the changed TRP in the TRP group is not included in the TRP cluster corresponding to the TRP group, and the changed TRP can be scheduled by the CU corresponding to the TRP cluster at any time domain position and / or any frequency domain position, then the CU can be used to: dynamically call the changed TRP into the TRP cluster. In particular, the TRP cluster corresponding to the above-mentioned TRP group can be: the TRP cluster to which any TRP in the TRP group belongs.

[0073] Optionally, in another embodiment of the present disclosure, the dynamic change of the TRP included in the TRP cluster may also be caused by a change in the communication scenario. For example, in some embodiments, the communication scenario may include: the transmission delay and / or communication quality between the CU and the TRP. For example, when the CU determines that the transmission delay between it and some TRPs in the TRP cluster is large, the CU can dynamically schedule the TRP with the large transmission delay out of the TRP cluster corresponding to the CU. Or, for example, when the CU determines that the communication quality between it and some TRPs in the TRP cluster is poor, the CU can dynamically schedule the TRP with poor communication quality out of the TRP cluster corresponding to the CU.

[0074] It should be noted that the above description of the communication scenarios is only a partial example description. It should be understood that in the communication system, other similar concepts and solutions should also be within the scope of protection of this disclosure.

[0075] Optionally, in one embodiment of the present disclosure, the CU can also be used to: when a new TRP is added to the TRP cluster, indicate to the new TRP that a cluster update has occurred on the new TRP, and / or indicate to the new TRP the communication resources used in the updated TRP cluster, which may be broadcast channels and / or system messages, etc.

[0076] In summary, in the distributed MIMO-based communication system provided by the embodiment of the present disclosure, since the TRPs in the TRP group providing communication services for the terminal device can belong to different TRP clusters, cross-cluster collaboration is achieved, and the terminal device does not have to switch to a certain TRP cluster before using the TRP in the TRP cluster, so there is no need for frequent switching as in the cellular network, thereby ensuring communication stability. In addition, the number of TRPs included in the TRP group can be changed dynamically. Therefore, when providing communication services to the terminal device based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring communication quality.

[0077] FIG2 is a flow chart of a communication method provided by another embodiment of the present disclosure, which is applied to a communication system based on distributed MIMO, wherein the communication system includes: one or more CUs, multiple TRPs, and one or more terminal devices. The communication method includes:

[0078] Step 201: The terminal device determines the first TRP#1 and the first TRP#2.

[0079] In some examples, the first TRP may be a TRP adjacent to the terminal device.

[0080] Optionally, in the embodiment of FIG2 , the at least one first TRP determined by the terminal device includes a first TRP#1 and a first TRP#2 as an example. Also, the communication system is subsequently taken as an example in which two CUs (respectively CU#1 and CU#2) are included.

[0081] It should be understood that the first TRP#1 and the first TRP#2, CU#1 and CU#2 are merely examples provided to introduce the interaction method. The at least one first TRP may also include other different TRPs. Similarly, the communication system may also include other different CUs. The scheme of "at least one first TRP includes other different TRPs" and the scheme of "the communication system includes other different CUs" are also within the scope of protection of the present disclosure.

[0082] Step 202: Monitor and measure the reference signals of the first TRP#1 and the first TRP#2 to obtain measurement results.

[0083] Step 203: Send the measurement result of the reference signal of the first TRP#1 to the first TRP#1;

[0084] Step 204: Send the measurement result of the reference signal of the first TRP#2 to the first TRP#2.

[0085] After executing step 204, in response to the first TRP#1 and the first TRP#2 being scheduled by the same CU, such as the first TRP#1 and the first TRP#2 being scheduled by CU#1, steps 205a-208a may be executed.

[0086] Step 205a: The first TRP#1 transmits the measurement result to CU#1.

[0087] Step 206a: The first TRP#2 transmits the measurement result to CU#1.

[0088] Step 207a: CU#1 determines at least one second TRP based on the measurement results of the first TRP#1 and the reference signal of the first TR#2.

[0089] Step 208a: CU#1 dynamically schedules the second TRP to provide services to the terminal device.

[0090] After executing step 204, in response to the first TRP#1 and the first TRP#2 being scheduled by different CUs, such as the first TRP#1 being scheduled by CU#1 and the second TRP#1 being scheduled by CU#2, and CU#2 being the main CU among CU#1 and CU#2, steps 205b-210b can be executed.

[0091] Step 205b: The first TRP#1 transmits the measurement result to CU#1.

[0092] Step 206b: The first TRP#2 transmits the measurement result to CU#2.

[0093] Step 207b: Measurement result of the reference signal of the first TRP#1 sent by CU#1 to CU#2.

[0094] Step 208b: CU#2 determines at least one second TRP based on the measurement results of the first TRP#1 and the reference signal of the first TRP#2.

[0095] The second TRP may belong to the same TRP cluster or a different TRP cluster.

[0096] Step 209b: CU#2 dynamically schedules the second TRP to provide services to the terminal device.

[0097] Specifically, the method for CU#2 to dynamically schedule the second TRP to provide services to the terminal device may include:

[0098] For the second TRP that can be scheduled by CU#2, CU#2 directly schedules the second TRP to provide communication services for the terminal device;

[0099] For the second TRP that cannot be scheduled by CU#2, CU#2 determines the CU that can schedule the second TRP and sends indication information to the CU that can schedule the second TRP. The indication information is used to instruct the CU that can schedule the second TRP: schedule the second TRP to provide communication services for the terminal device.

[0100] Optionally, in one embodiment of the present disclosure, referring to FIG. 2 , after step 208a is performed, the method may further include:

[0101] Step 209a: If the second TRP is not included in the TRP cluster corresponding to CU#1, and the second TRP can be scheduled by CU#1 at any time domain position and / or any frequency domain position, the second TRP can be dynamically transferred to the TRP cluster corresponding to CU#1.

[0102] Optionally, in one embodiment of the present disclosure, referring to FIG. 2 , after step 209 b is performed, the method may further include:

[0103] Step 210b: If the second TRP is not included in the TRP cluster corresponding to CU#2, and the second TRP can be scheduled by CU#2 at any time domain position and / or any frequency domain position, the second TRP can be dynamically transferred to the TRP cluster corresponding to CU#2.

[0104] Optionally, in one embodiment of the present disclosure, the method may further include: the CU dynamically changes the TRP in the TRP cluster based on the communication scenario (this step is not shown in FIG. 2 ).

[0105] For the detailed execution process of the above steps, please refer to the description of the embodiment in FIG1 .

[0106] In summary, by executing the steps of Figure 2, dynamic changes in the TRP group can be achieved, and the TRPs in the TRP group can belong to the same TRP cluster or different TRP clusters. Among them, since the TRPs in the TRP group that provides communication services for the terminal device can belong to different TRP clusters, cross-cluster collaboration is achieved, and the terminal device does not have to switch to a certain TRP cluster before using the TRP in the TRP cluster, so there is no need for frequent switching as in the cellular network, ensuring communication stability. In addition, the number of TRPs included in the TRP group can change dynamically, so when providing communication services to the terminal device based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring communication quality.

[0107] FIG3 is a flow chart of a dynamic change of TRPs included in a TRP group provided by an embodiment of the present disclosure, which is applied to a CU. The embodiment of FIG3 shows the execution steps of the CU when the first TRP determined by the terminal device can be scheduled by the same CU. As shown in FIG3 , the method may include the following steps:

[0108] Step 301: Receive measurement results of at least one first TRP reference signal sent by a terminal device.

[0109] Step 302: Based on the measurement result of the reference signal of the first TRP, determine the second TRP constituting the TRP group.

[0110] Step 303: Dynamically schedule the second TRP to provide communication services for the terminal device.

[0111] For a detailed description of steps 301 - 303 , please refer to the above embodiment description.

[0112] To sum up, by executing the steps of Figure 3, dynamic changes of the TRP group can be achieved. Therefore, when communication services are provided to the terminal device based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring the communication quality.

[0113] FIG4 is a flow chart illustrating a dynamic change of the TRP included in a TRP group provided by an embodiment of the present disclosure, as applied to a CU. The embodiment of FIG4 illustrates the execution steps of a primary CU when a first TRP determined by a terminal device is scheduled by a different CU. The primary CU is the CU used to determine a second TRP. As shown in FIG4 , the method may include the following steps:

[0114] Step 401: Receive measurement results of at least one first TRP reference signal sent by a terminal device.

[0115] Step 402: Receive measurement results of at least one first TRP reference signal sent by other UEs that have also obtained measurement results.

[0116] Step 403: Based on the measurement result of the reference signal of the first TRP, determine the second TRP constituting the TRP group.

[0117] Step 404: For the second TRP that can be scheduled by the CU, directly schedule the second TRP to provide communication services for the terminal device.

[0118] Step 405: For the second TRP that cannot be scheduled by the CU, determine the CU that can schedule the second TRP, and send indication information to the CU that can schedule the second TRP. The indication information is used to instruct the CU that can schedule the second TRP: schedule the second TRP to provide communication services for the terminal device.

[0119] For a detailed description of steps 401 - 405 , please refer to the description of the embodiment in FIG. 1 .

[0120] In summary, by executing the steps of FIG4 , dynamic changes in the TRP group can be achieved. Thus, when providing communication services to terminal devices based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group, so as to always select the TRP group that is most beneficial to the terminal device (such as having better communication quality) to provide communication services to the terminal device, thereby ensuring the communication quality. Moreover, in the embodiment of FIG4 , the TRPs in the TRP group can belong to different TRP clusters, realizing cross-cluster collaboration, so that the terminal device does not have to switch to a certain TRP cluster before using the TRP in the TRP cluster, thereby eliminating the need for frequent switching as in cellular networks, thereby ensuring communication stability.

[0121] FIG5 is a flow chart illustrating a dynamic change of a TRP included in a TRP group according to an embodiment of the present disclosure, as applied to a CU. The embodiment of FIG5 illustrates the execution steps of a CU that is not a primary CU when the first TRP determined by the terminal device is scheduled by a different CU. As shown in FIG5 , the method may include the following steps:

[0122] Step 501: Receive measurement results of at least one first TRP reference signal sent by a terminal device.

[0123] Step 502: Send the received measurement result to the master CU.

[0124] Step 503: Receive the indication information sent by the main CU, and schedule the second TRP to provide communication services for the terminal device based on the indication information.

[0125] For a detailed description of steps 501 - 503 , please refer to the description of the embodiment in FIG. 1 .

[0126] In summary, by executing the steps of FIG5 , dynamic changes in the TRP group can be achieved. Thus, when providing communication services to terminal devices based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group, so as to always select the TRP group that is most beneficial to the terminal device (such as having better communication quality) to provide communication services to the terminal device, thereby ensuring the communication quality. Moreover, in the embodiment of FIG5 , the TRPs in the TRP group can belong to different TRP clusters, realizing cross-cluster collaboration, so that the terminal device does not have to switch to a certain TRP cluster before using the TRP in the TRP cluster, thereby eliminating the need for frequent switching as in cellular networks, thereby ensuring communication stability.

[0127] FIG6a is a flow chart illustrating a dynamic change of a TRP included in a TRP group according to an embodiment of the present disclosure. As shown in FIG6a , the method may include the following steps when applied to a CU:

[0128] Step 601a: Send a notification message to the terminal device. The notification message may indicate at least one of the following: an identifier of the changed TRP in the TRP group; or a communication resource between the terminal device and the changed TRP in the TRP group, where the communication resource may be, for example, a beam identifier.

[0129] For a detailed introduction to step 601a, please refer to the description of the embodiment in FIG. 1 .

[0130] In summary, by executing the steps of Figure 6a, the terminal device can know which TRPs in its corresponding TRP group have changed, and can know which communication resources should be used to communicate with the changed TRP, thereby ensuring communication stability.

[0131] FIG6 b is a flow chart illustrating a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure. When applied to a CU, as shown in FIG6 b , the method may include the following steps:

[0132] Step 601b: If the second TRP is not included in the TRP cluster corresponding to the CU, and the second TRP is at any time domain position and / or any frequency domain position, the CU can schedule the second TRP and dynamically adjust it into the TRP cluster corresponding to the CU.

[0133] For a detailed description of step 601b, please refer to the description of the embodiment in FIG. 1 .

[0134] In summary, by executing the steps in FIG6b , dynamic changes of the TRP cluster can be achieved, thereby improving communication flexibility.

[0135] FIG6c is a flow chart illustrating a dynamic change of a TRP included in a TRP group according to an embodiment of the present disclosure. When applied to a CU, as shown in FIG6c , the method may include the following steps:

[0136] Step 601c: Communicate with other CUs to share information and coordinate scheduling of TRPs in different TRP clusters to form a TRP group.

[0137] For a detailed description of step 601c, please refer to the description of the embodiment in FIG. 1 .

[0138] To sum up, by executing the steps of Figure 6c, different CUs can collaboratively schedule TRPs in different TRP clusters to form a TRP group, thereby realizing cross-cluster collaboration. The terminal device does not have to switch to a certain TRP cluster before using the TRP in that TRP cluster, thus eliminating the need for frequent switching like in cellular networks, ensuring communication stability.

[0139] FIG7 is a flow chart of a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure. When applied to a TRP, as shown in FIG7 , the method may include the following steps:

[0140] Step 701: Receive the reference signal measurement result of the TRP sent by the terminal device.

[0141] Step 702: Send the measurement result to the CU that can schedule the TRP.

[0142] For a detailed description of steps 701 to 702 , please refer to the description of the embodiment in FIG. 1 .

[0143] To sum up, by executing the steps of Figure 7, the CU can obtain the measurement results of the reference signal of TRP, and the CU can dynamically change the TRP in the TRP group based on the measurement results of the reference signal of TRP to realize dynamic changes of the TRP group. Therefore, when providing communication services to the terminal device based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring the communication quality.

[0144] FIG8 is a flow chart of a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure. As shown in FIG8 , the method may include the following steps when applied to a TRP:

[0145] Step 801: Provide communication services for terminal devices based on dynamic scheduling of CUs.

[0146] For a detailed description of step 801 , please refer to the description of the embodiment in FIG. 1 .

[0147] To sum up, by executing the steps of Figure 8, TRP can be dynamically scheduled to provide services for terminal devices. Therefore, when providing communication services to terminal devices based on TRP, no matter where the terminal device moves, CU will dynamically change TRP to always select the TRP that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring communication quality.

[0148] FIG9 is a flow chart illustrating a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure. As shown in FIG9 , the method may include the following steps when applied to a terminal device:

[0149] Step 901: Determine at least one first TRP.

[0150] Step 902: Monitor and measure the reference signal of the first TRP to obtain a measurement result.

[0151] Step 903: Send the measurement result of the first TRP to the corresponding first TRP.

[0152] For a detailed description of steps 901 - 903 , please refer to the description of the embodiment in FIG. 1 .

[0153] To summarize, by executing the steps of Figure 9, the terminal device can send the measurement results of the reference signal of at least one first TRP to the first TRP, so that the first TRP can send the measurement results to the CU, so that the CU can dynamically change the TRP in the TRP group based on the measurement results of the reference signal of the TRP, thereby realizing dynamic changes in the TRP group. When providing communication services to the terminal device based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring communication quality.

[0154] FIG10 is a flow chart illustrating a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure. As shown in FIG10 , the method may include the following steps when applied to a terminal device:

[0155] Step 1001: Receive notification information sent by the CU, where the notification message may indicate at least one of the following: an identifier of a changed TRP in the TRP group; or communication resources between the terminal device and the changed TRP in the TRP group, where the communication resources may be, for example, a beam identifier.

[0156] For a detailed introduction to step 1001 , please refer to the description of the embodiment in FIG. 1 .

[0157] In summary, by executing the steps of Figure 10, the terminal device can know which TRPs in its corresponding TRP group have changed, and can know which communication resources should be used to communicate with the changed TRP, thereby ensuring communication stability.

[0158] Optionally, in one embodiment of the present disclosure, FIG11 is a schematic structural diagram of a communication device provided in one embodiment of the present disclosure. As shown in FIG11 , the communication device may include:

[0159] a processing module, configured to determine a second TRP based on a measurement result of a reference signal of at least one first TRP, wherein the second TRP is used to form a TRP group;

[0160] The processing module is also used to dynamically schedule the second TRP to provide communication services for the terminal device.

[0161] To sum up, the communication device provided by the embodiment of the present disclosure can realize dynamic changes of the TRP group. Therefore, when providing communication services to the terminal device based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring the communication quality.

[0162] Optionally, in one embodiment of the present disclosure, FIG12 is a schematic structural diagram of a communication device provided in one embodiment of the present disclosure. As shown in FIG12 , the communication device may include:

[0163] A transceiver module, configured to receive a measurement result of a reference signal of the TRP sent by a terminal device;

[0164] The transceiver module is further configured to send the measurement result to the CU that can schedule the TRP.

[0165] To sum up, the communication device provided by the embodiment of the present disclosure can enable the CU to obtain the measurement results of the reference signal of the TRP, and the CU can dynamically change the TRP in the TRP group based on the measurement results of the reference signal of the TRP, thereby realizing dynamic changes of the TRP group. Therefore, when providing communication services to the terminal device based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring the communication quality.

[0166] Optionally, in one embodiment of the present disclosure, FIG13 is a schematic structural diagram of a communication device provided in one embodiment of the present disclosure. As shown in FIG13 , the communication device may include:

[0167] A processing module is used to determine at least one first TRP.

[0168] The processing module is further configured to monitor and measure a reference signal of the first TRP to obtain a measurement result.

[0169] The transceiver module is used to send the measurement result of the first TRP to the corresponding first TRP.

[0170] To sum up, the communication device provided by the embodiment of the present disclosure can send the measurement results of the reference signal of at least one first TRP to the first TRP, so that the first TRP can send the measurement results to the CU, so that the CU can dynamically change the TRP in the TRP group based on the measurement results of the reference signal of the TRP, thereby realizing dynamic changes in the TRP group. When providing communication services to the terminal device based on the TRP in the TRP group, no matter where the terminal device moves, the CU will dynamically change the TRP in the TRP group to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services to the terminal device, thereby ensuring the communication quality.

[0171] The following is an example of the communication system of the present disclosure:

[0172] As shown in Figure 1 above, the various parts are defined as follows:

[0173] The network architecture is shown in the figure below, and the various parts are defined as follows:

[0174] TRP: Transmission Reception Point, used to transmit data to UE (i.e. the aforementioned terminal device) or receive data from UE.

[0175] CU: Control Unit, typically connected to multiple TRPs via optical fiber, aggregates information from each TRP to a central controller for coordinated scheduling of radio resources. CUs exchange information with each other via optical fiber or the core network.

[0176] TRP cluster: Two or more TRPs form a TRP cluster. One possible approach is to configure two or more adjacent TRPs into a TRP cluster. The radio resources on a TRP can be scheduled by two or more CUs, for example, through time division or frequency division.

[0177] TRP group: A set of TRPs serving a UE at the same time. The TRPs in this set can belong to the same TRP cluster or different TRP clusters.

[0178] In the present disclosure, a UE can be connected to multiple TRPs at the same time, and multiple TRPs transmit data to the UE. Multiple TRPs are referred to as a TRP group. The TRPs in the TRP group can come from the same TRP cluster or from different TRP clusters, depending on the spatial position of the UE, that is, the TRPs serving the same UE can achieve cross-cluster collaboration. As shown in Figure 1, when the UE is at the position shown in Figure 1, the three TRPs connected to the UE are from two adjacent TRP clusters. Therefore, within a certain range, the frequent switching problem caused by traditional cellular networks due to high-frequency networking can be avoided. And the number of TRPs in the TRP group can change as the user moves.

[0179] Please refer to Figure 14, which is a schematic diagram of the structure of a terminal device 1400 provided in an embodiment of the present application. The terminal device can be used to implement the method described in the above method embodiment, and the details can be referred to the description in the above method embodiment.

[0180] The terminal device 1400 may include one or more processors 1401. The processor 1401 may be a general-purpose processor or a dedicated processor. For example, it may be a baseband processor or a central processing unit. The baseband processor may be used to process communication protocols and communication data, and the central processing unit may be used to control a communication device (e.g., a base station, a baseband chip, a terminal device, a terminal device chip, a DU or CU, etc.), execute computer programs, and process computer program data.

[0181] Optionally, the terminal device 1400 may further include one or more memories 1402, on which a computer program 1404 may be stored. The processor 1401 executes the computer program 1404 to cause the terminal device 1400 to perform the method described in the above method embodiment. Optionally, the memory 1402 may also store data. The terminal device 1400 and the memory 1402 may be provided separately or integrated together.

[0182] Optionally, terminal device 1400 may further include a transceiver 1405 and an antenna 1402. Transceiver 1405 may be referred to as a transceiver unit, a transceiver, or a transceiver circuit, and is configured to implement transceiver functions. Transceiver 1405 may include a receiver and a transmitter. The receiver may be referred to as a receiver or a receiving circuit, and is configured to implement a receiving function; the transmitter may be referred to as a transmitter or a transmitting circuit, and is configured to implement a transmitting function.

[0183] Optionally, the terminal device 1400 may further include one or more interface circuits 1407. The interface circuit 1407 is configured to receive code instructions and transmit the code instructions to the processor 1401. The processor 1401 executes the code instructions to enable the terminal device 1400 to execute the method described in the above method embodiment.

[0184] In one implementation, processor 1401 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuit, interface, or interface circuit for implementing the receiving and transmitting functions may be separate or integrated. The transceiver circuit, interface, or interface circuit may be used for reading and writing code / data, or may be used for transmitting or delivering signals.

[0185] In one implementation, processor 1401 may store a computer program 1403. Computer program 1403, when executed on processor 1401, enables terminal device 1400 to perform the method described in the above method embodiment. Computer program 1403 may be embedded in processor 1401. In this case, processor 1401 may be implemented by hardware.

[0186] In one implementation, the terminal device 1400 may include a circuit that can implement the functions of sending, receiving, or communicating in the aforementioned method embodiments. The processor and transceiver described in this application can be implemented on an integrated circuit (IC), an analog IC, a radio frequency integrated circuit RFIC, a mixed signal IC, an application specific integrated circuit (ASIC), a printed circuit board (PCB), an electronic device, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), N-type metal oxide semiconductor (nMetal-oxide-semiconductor, NMOS), P-type metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

[0187] The structure of the terminal device described in the above embodiment may not be limited to FIG14. The terminal device may be an independent device or may be part of a larger device. For example, the terminal device may be:

[0188] (1) An independent integrated circuit (IC), or chip, or chip system or subsystem;

[0189] (2) a collection of one or more ICs, optionally including a storage component for storing data and computer programs;

[0190] (3) ASIC, such as modem;

[0191] (4) Modules that can be embedded in other devices;

[0192] (5) Receivers, terminal devices, intelligent terminal devices, cellular phones, wireless devices, handheld devices, mobile units, vehicle-mounted devices, network devices, cloud devices, artificial intelligence devices, etc.;

[0193] (6)Others, etc.

[0194] If the terminal device can be a chip, please refer to the schematic diagram of the chip structure shown in Figure 15. The chip shown in Figure 15 includes a processor 1501 and an interface 1502. The number of processors 1501 can be one or more, and the number of interfaces 1502 can be multiple.

[0195] Optionally, the chip further includes a memory 1503, which is used to store necessary computer programs and data.

[0196] Those skilled in the art will also appreciate that the various illustrative logical blocks listed in the embodiments of the present application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functions are implemented by hardware or software depends on the specific application and the design requirements of the entire system. Those skilled in the art may use various methods to implement the described functions for each specific application, but such implementation should not be construed as exceeding the scope of protection of the embodiments of the present application.

[0197] The present application also provides a readable storage medium having instructions stored thereon, which implement the functions of any of the above method embodiments when executed by a computer.

[0198] The present application also provides a computer program product, which implements the functions of any of the above method embodiments when executed by a computer.

[0199] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer program can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center that includes one or more available media integrated. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a high-density digital video disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0200] Those skilled in the art will understand that the various numerical numbers such as first and second involved in this application are only for the convenience of description and are not used to limit the scope of the embodiments of this application, and also indicate the order of precedence.

[0201] In this application, at least one can also be described as one or more, and multiple can be two, three, four or more, which is not limited in this application. In the embodiments of this application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "A", "B", "C" and "D", and there is no order of precedence or size between the technical features described by "first", "second", "third", "A", "B", "C" and "D".

[0202] The correspondences shown in the tables in this application can be configured or predefined. The values ​​of the information in each table are examples only and can be configured to other values, which are not limited by this application. When configuring the correspondence between information and parameters, it is not necessarily required to configure all the correspondences shown in each table. For example, in the tables in this application, the correspondences shown in certain rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above tables, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables can also use other names that can be understood by the communication device, and the values ​​or representations of the parameters can also use other values ​​or representations that can be understood by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables, etc.

[0203] The predefined in this application may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

[0204] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0205] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0206] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A communication system based on distributed MIMO, characterized in that: It includes at least one control unit CU, multiple transmission reception points TRP, and at least one terminal device; The at least one CU is used to schedule multiple TRPs; The CU corresponds to a TRP cluster, the TRP cluster includes at least two TRPs, and the TRPs in the TRP cluster can be scheduled by the CU corresponding to the TRP cluster; The terminal device corresponds to a TRP group, wherein TRPs that provide communication services to the same terminal device at the same time belong to the same TRP group; the TRP group includes at least one TRP, and the TRPs included in the TRP group belong to the same TRP cluster or different TRP clusters; the number of TRPs included in the TRP group can change dynamically.

2. The communication system according to claim 1, wherein The number of TRPs included in the TRP cluster corresponding to the CU is less than or equal to the total number of TRPs that can be scheduled by the CU.

3. The communication system according to claim 1, wherein Different CUs share information by communicating with each other to coordinate scheduling of TRPs in different TRP clusters to form a TRP group.

4. The communication system according to claim 1, wherein One TRP can be scheduled by at least two CUs through time division or frequency division.

5. The communication system according to any one of claims 1 to 4, characterized in that: The TRPs included in the TRP group can be dynamically changed and include at least one of the following: The TRPs included in the TRP group change dynamically as the terminal device moves; The TRPs included in the TRP group change dynamically as the channel conditions of the terminal device change; The TRPs included in the TRP group change dynamically as the service requirements of the terminal device change.

6. The communication system according to any one of claims 1 to 4, characterized in that: The CU is further used to send a notification message to the terminal device when a TRP in the TRP group changes.

7. The communication system according to claim 6, wherein: The notification message indicates at least one of the following: identification of the TRPs that changed in the TRP group; Communication resources between the terminal device and the changed TRP.

8. The communication system according to claim 1 or 3, wherein: The communication system also includes a core network CN; different CUs communicate with each other via the CN.

9. The communication system according to claim 1 or 3, wherein: Different CUs communicate with each other through optical fibers or air interfaces.

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