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WO2024130668A1 - Système de communications reparti à entrées multiples sorties multiples (mimo) - Google Patents

Système de communications reparti à entrées multiples sorties multiples (mimo) Download PDF

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Publication number
WO2024130668A1
WO2024130668A1 PCT/CN2022/141200 CN2022141200W WO2024130668A1 WO 2024130668 A1 WO2024130668 A1 WO 2024130668A1 CN 2022141200 W CN2022141200 W CN 2022141200W WO 2024130668 A1 WO2024130668 A1 WO 2024130668A1
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Prior art keywords
trp
terminal device
trps
group
cluster
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PCT/CN2022/141200
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English (en)
Chinese (zh)
Inventor
段高明
池连刚
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Priority to CN202280100996.6A priority Critical patent/CN120019623A/zh
Priority to PCT/CN2022/141200 priority patent/WO2024130668A1/fr
Publication of WO2024130668A1 publication Critical patent/WO2024130668A1/fr
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems

Definitions

  • the present disclosure relates to the field of communication technology, and in particular to a communication system based on distributed multiple-input multiple-output (Multi-user multiple input multiple output, MIMO).
  • MIMO distributed multiple-input multiple-output
  • the distributed MIMO-based communication system proposed in the present disclosure is used to solve the problem of frequent cell switching.
  • 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;
  • 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.
  • 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, ensuring communication stability.
  • the number of TRPs included in the TRP group can be changed dynamically, so when providing communication services for 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, so as to always select the TRP group that is most beneficial to the terminal device (such as better communication quality) to provide communication services for the terminal device, ensuring communication quality.
  • FIG1 is a schematic diagram of the architecture of a communication system based on distributed MIMO provided in an embodiment of the present disclosure
  • FIG2 is a flow chart of a communication method provided by another embodiment of the present disclosure.
  • FIG3 is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG4 is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG5 is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG6a is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG6b is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG6c is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG7 is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG8 is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG9 is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG10 is a schematic diagram of a process flow when a TRP included in a TRP group dynamically changes according to an embodiment of the present disclosure
  • FIG11 is a schematic diagram of the structure of a communication device provided by an embodiment of the present disclosure.
  • FIG12 is a schematic diagram of the structure of a communication device provided by an embodiment of the present disclosure.
  • FIG13 is a schematic diagram of the structure of a communication device provided by an embodiment of the present disclosure.
  • FIG14 is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application.
  • FIG. 15 is a schematic diagram of the structure of a chip provided by an embodiment of the present disclosure.
  • first, second, third, etc. may be used to describe various information in the disclosed embodiments, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • 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.
  • the words "if” and “if” as used herein may be interpreted as “at” or "when” or "in response to determination".
  • TRP Transmission reception point
  • CU is responsible for program flow management.
  • CU is generally connected to multiple TRPs to aggregate the information of each TRP to CU so that CU can coordinate the scheduling of wireless resources.
  • different CUs exchange information through optical fiber or core network.
  • FIG1 is a schematic diagram of a communication system based on distributed MIMO provided in 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 only used for example and do not constitute a limitation on the embodiment of the present disclosure, and in actual applications, may include one or more CUs, or two or more TRPs, or one or more terminal devices.
  • the communication system shown in FIG1 takes two CUs, eight TRPs, and one terminal device as an example.
  • the terminal device in the disclosed embodiment may be an entity on the user side for receiving or transmitting signals, such as a mobile phone.
  • the terminal device may also be referred to as a terminal device (terminal), a user equipment (UE), a mobile station (MS), a mobile terminal device (MT), etc.
  • the UE may be a car with communication function, a smart car, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with wireless transceiver function, 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, a wireless terminal device in remote medical surgery, a wireless terminal device in 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.
  • 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 can be scheduled by the CU can correspond to a TRP cluster, or some TRPs that can be scheduled by a CU 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 may 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.
  • the communication system based on distributed MIMO includes two CUs, namely CU#1 and CU#2.
  • CU#1 corresponds to TRP cluster #1
  • CU#2 corresponds to TRP cluster #2.
  • the connection line between the CU and a TRP in Figure 1 indicates that: if 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.
  • a TRP may also be scheduled by one or more CUs.
  • 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.
  • the TRP may be scheduled by CU#1, and at a second time domain position, the TRP may be scheduled by CU#2.
  • 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.
  • the TRP may be scheduled by CU#1, and at a second frequency domain position, the TRP may be scheduled by CU#2.
  • the TRPs included in the same TRP group belong to different TRP clusters.
  • TRP#4, TRP#5, and TRP#6 in FIG1 provide communication services for terminal devices at the same time, and the TRP#4, TRP#5, and TRP#6 belong to the same TRP group.
  • the TRP cluster to which TRP#4 belongs is different from the TRP cluster to which TRP#5 and TRP#6 belong.
  • the TRPs included in the same TRP group may also belong to the same TRP cluster.
  • TRP#5, TRP#6, and TRP#8 in FIG1 may provide communication services for terminal devices at the same time, and the TRP#5, TRP#6, and TRP#8 may belong to the same TRP group.
  • TRP#5, TRP#6, and TRP#8 all belong to TRP cluster #2.
  • the TRPs included in the TRP group can be changed dynamically.
  • the above-mentioned first TRP may be: a TRP whose distance from the terminal device is less than the first preset threshold, that is, the first TRP is a TRP adjacent to the terminal device.
  • at least one first TRP may be scheduled by different CUs, then the terminal device may send the measurement results 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 for the terminal device, and different second TRPs may belong to the same TRP cluster or different TRP clusters.
  • 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 communication quality of the reference signal 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 communication quality of the reference signal of the TRP currently serving the terminal device.
  • the first preset threshold, the second preset threshold, and the predetermined value mentioned above can all be preset.
  • different CUs can share information through mutual communication. Based on the shared information, the CU can determine the CU that can schedule the part of the second TRP, and then different CUs can collaboratively schedule TRPs in different TRP clusters to form a TRP group.
  • different CUs may communicate with each other through a core network (CN), or through optical fibers, or through air interfaces.
  • CN core network
  • the information shared between CUs may include: an identifier of a TRP that the CU can schedule. That is, the CU will notify other CUs which TRPs it can schedule.
  • the information shared between CUs may further include at least one of the following:
  • the target time domain position corresponding to the TRP that the CU can schedule is used to indicate: at the target time domain position, the CU can schedule the TRP;
  • the information shared between CUs may also include: terminal devices served by the TRP that can be scheduled by the CU.
  • the TRP included in the above-mentioned TRP group can dynamically change 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 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.
  • 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.
  • the CU may also be used 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:
  • the communication resources between the terminal device and the changed TRP in the TRP group which communication resources may be, for example, a beam identifier.
  • 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.
  • 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.
  • 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.
  • the TRP cluster corresponding to the above-mentioned TRP group can be: the TRP cluster to which any TRP in the TRP group belongs.
  • the dynamic change of the TRP included in the TRP cluster may also be caused by a change in the communication scenario.
  • the communication scenario may include: the transmission delay and/or communication quality between the CU and the TRP.
  • 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.
  • 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.
  • 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 in 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.
  • the terminal device 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, 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.
  • the number of TRPs included in the TRP group can be changed 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, so as 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, ensuring communication quality.
  • FIG2 is a flow chart of a communication method provided by another embodiment of the present disclosure, wherein the communication method 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:
  • Step 201 The terminal device determines the first TRP#1 and the first TRP#2.
  • the first TRP may be a TRP that is adjacent to the terminal device.
  • the at least one first TRP determined by the terminal device includes a first TRP#1 and a first TRP#2 as an example.
  • the communication system includes two CUs (respectively CU#1 and CU#2) as an example.
  • first TRP#1 and the first TRP#2, CU#1 and CU#2 are merely examples provided to introduce the interaction method, and the at least one first TRP may also include other different TRPs.
  • 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.
  • Step 202 monitor and measure the reference signals of the first TRP#1 and the first TRP#2 to obtain measurement results.
  • Step 203 Send the measurement result of the reference signal of the first TRP#1 to the first TRP#1;
  • Step 204 Send the measurement result of the reference signal of the first TRP#2 to the first TRP#2.
  • steps 205a-208a may be executed.
  • Step 205a The first TRP#1 transmits the measurement result to CU#1.
  • Step 206a The first TRP#2 transmits the measurement result to CU#1.
  • Step 207a CU#1 determines at least one second TRP based on the measurement results of the reference signals of the first TRP#1 and the first TR#2.
  • Step 208a CU#1 dynamically schedules the second TRP to provide services to the terminal device.
  • steps 205b-210b may be executed.
  • Step 205b The first TRP#1 transmits the measurement result to CU#1.
  • Step 206b The first TRP#2 transmits the measurement result to CU#2.
  • Step 207b measurement results of the reference signal of the first TRP#1 sent by CU#1 to CU#2.
  • Step 208b CU#2 determines at least one second TRP based on the measurement results of the reference signals of the first TRP#1 and the first TRP#2.
  • the second TRP may belong to the same TRP cluster or a different TRP cluster.
  • Step 209b CU#2 dynamically schedules the second TRP to provide services to the terminal device.
  • the method for CU#2 to dynamically schedule the second TRP to provide services for the terminal device may include:
  • CU#2 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;
  • CU#2 determines the CU that can schedule the second TRP, and sends indication information to the CU that can schedule the second TRP, where 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.
  • the method may further include:
  • 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 adjusted into the TRP cluster corresponding to CU#1.
  • the method may further include:
  • 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 adjusted into the TRP cluster corresponding to CU#2.
  • 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 ).
  • 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.
  • 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.
  • 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, so as 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, ensuring the communication quality.
  • FIG3 is a flow chart of a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure, which is applied to a CU, wherein the embodiment of FIG3 is the execution steps of the CU when the first TRP determined by the terminal device can be scheduled by the same CU.
  • the method may include the following steps:
  • Step 301 Receive measurement results of at least one first TRP reference signal sent by a terminal device.
  • Step 302 Based on the measurement result of the reference signal of the first TRP, determine the second TRP constituting the TRP group.
  • Step 303 Dynamically schedule the second TRP to provide communication services for the terminal device.
  • steps 301 - 303 please refer to the above embodiment description.
  • 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.
  • FIG4 is a flow chart of a dynamic change of TRP included in a TRP group provided by an embodiment of the present disclosure, which is applied to a CU, wherein the embodiment of FIG4 is the execution steps of the main CU when the first TRP determined by the terminal device is scheduled by different CUs.
  • the main CU is: a CU used to determine the second TRP.
  • the method may include the following steps:
  • Step 401 Receive measurement results of at least one first TRP reference signal sent by a terminal device.
  • Step 402 Receive measurement results of at least one first TRP reference signal sent by other UEs that have also obtained measurement results.
  • Step 403 Based on the measurement result of the reference signal of the first TRP, determine the second TRP constituting the TRP group.
  • 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.
  • 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, where 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.
  • steps 401 - 405 please refer to the description of the embodiment of FIG. 1 .
  • 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.
  • 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.
  • the TRPs in the TRP group can belong to different TRP clusters, realizing cross-cluster collaboration, so 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 a cellular network, thereby ensuring communication stability.
  • FIG5 is a flow chart of a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure, which is applied to a CU, wherein the embodiment of FIG5 is an execution step of a CU that is not a main CU when the first TRP determined by the terminal device is scheduled by a different CU.
  • the method may include the following steps:
  • Step 501 Receive measurement results of at least one first TRP reference signal sent by a terminal device.
  • Step 502 Send the received measurement result to the master CU.
  • 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.
  • steps 501 - 503 please refer to the description of the embodiment of FIG. 1 .
  • 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.
  • 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.
  • the TRPs in the TRP group can belong to different TRP clusters, realizing cross-cluster collaboration, so 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.
  • FIG6a is a flow chart of a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure, and is applied to a CU. As shown in FIG6a , the method may include the following steps:
  • Step 601a Send a notification message to the terminal device.
  • the notification message may indicate at least one of the following: an identifier of a changed TRP in the TRP group; 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.
  • step 601a For a detailed description of step 601a, please refer to the description of the embodiment of FIG. 1 .
  • 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.
  • FIG6b is a flow chart of a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure, and is applied to a CU. As shown in FIG6b , the method may include the following steps:
  • Step 601b If the second TRP is not included in the TRP cluster corresponding to the CU, and the second TRP can be scheduled by the CU at any time domain position and/or any frequency domain position, the second TRP can be dynamically adjusted into the TRP cluster corresponding to the CU.
  • step 601b For a detailed description of step 601b, please refer to the description of the embodiment of FIG. 1 .
  • FIG6c is a flow chart of a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure, and is applied to a CU. As shown in FIG6c , the method may include the following steps:
  • Step 601c communicate with other CUs to share information and coordinately schedule TRPs in different TRP clusters to form a TRP group.
  • step 601c For a detailed description of step 601c, please refer to the description of the embodiment of FIG. 1 .
  • different CUs can collaboratively schedule TRPs in different TRP clusters to form a TRP group, thereby achieving 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 in cellular networks, thereby ensuring communication stability.
  • FIG. 7 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 FIG. 7 , the method may include the following steps:
  • Step 701 Receive the reference signal measurement result of the TRP sent by the terminal device.
  • Step 702 Send the measurement result to the CU that can schedule the TRP.
  • steps 701 to 702 please refer to the description of the embodiment of FIG. 1 .
  • the CU can 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 having better communication quality) to provide communication services to the terminal device, thereby ensuring the communication quality.
  • Step 801 Provide communication services for terminal devices based on dynamic scheduling of CUs.
  • step 801 For a detailed description of step 801 , please refer to the description of the embodiment of FIG. 1 .
  • TRP can be dynamically scheduled to provide services for terminal devices. Therefore, when communication services are provided 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.
  • Step 901 Determine at least one first TRP.
  • Step 902 monitor and measure the reference signal of the first TRP to obtain a measurement result.
  • Step 903 Send the measurement result of the first TRP to the corresponding first TRP.
  • 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 of the TRP group. 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 communication quality.
  • FIG10 is a flow chart of a dynamic change of a TRP included in a TRP group provided by an embodiment of the present disclosure, which is applied to a terminal device. As shown in FIG10 , the method may include the following steps:
  • Step 1001 receive notification information sent by CU, where the notification message may indicate at least one of the following: an identifier of a changed TRP in the TRP group; a communication resource between a terminal device and the changed TRP in the TRP group, where the communication resource may be, for example, a beam identifier.
  • 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.
  • FIG11 is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure.
  • the communication device may include:
  • a processing module configured to determine a second TRP based on a measurement result of a reference signal of at least one first TRP, the second TRP being used to form a TRP group;
  • the processing module is also used to dynamically schedule the second TRP to provide communication services for the terminal device.
  • the communication device provided by the embodiment of the present disclosure can realize dynamic changes of the TRP group. 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.
  • FIG. 12 is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure.
  • the communication device may include:
  • a transceiver module used for receiving a reference signal measurement result of the TRP sent by a terminal device
  • the transceiver module is also used to send the measurement result to the CU that can schedule the TRP.
  • FIG13 is a schematic diagram of the structure of a communication device provided in an embodiment of the present disclosure.
  • the communication device may include:
  • a processing module is used to determine at least one first TRP.
  • the processing module is also used to monitor and measure the reference signal of the first TRP to obtain a measurement result.
  • the transceiver module is used to send the measurement result of the first TRP to the corresponding first TRP.
  • the communication 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 of the TRP group.
  • the CU 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 having better communication quality) to provide communication services to the terminal device, thereby ensuring the communication quality.
  • the network architecture is shown in the figure below, and the various parts are defined as follows:
  • TRP Transmission Reception Point, used to transmit data to UE (i.e. the aforementioned terminal device) or receive data from UE.
  • TRP cluster Two or more TRPs form a TRP cluster. One possible way is to configure two or more adjacent TRPs into a TRP cluster.
  • the wireless resources on a TRP can be scheduled by two or more CUs, for example, by time division or frequency division.
  • TRP group A set of TRPs that serve a UE at the same time, where the TRPs in the set can belong to the same TRP cluster or different TRP clusters.
  • a UE can be connected to multiple TRPs at the same time, and multiple TRPs transmit data to the UE, and 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.
  • FIG1 when the UE is at the position shown in FIG1 , 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.
  • the terminal device 1400 may include one or more processors 1401.
  • the processor 1401 may be a general-purpose processor or a dedicated processor, etc.
  • it may be a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and communication data
  • the central processing unit may be used to control the communication device (such as a base station, a baseband chip, a terminal device, a terminal device chip, a DU or a CU, etc.), execute a computer program, and process the data of the computer program.
  • the terminal device 1400 may further include one or more interface circuits 1407.
  • the interface circuit 1407 is used to receive code instructions and transmit them to the processor 1401.
  • the processor 1401 runs the code instructions to enable the terminal device 1400 to execute the method described in the above method embodiment.
  • the processor 1401 may include a transceiver for implementing the receiving and sending functions.
  • 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 sending functions may be separate or integrated.
  • the above-mentioned transceiver circuit, interface, or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface, or interface circuit may be used for transmitting or delivering signals.
  • the processor 1401 may store a computer program 1403, which runs on the processor 1401, and enables the terminal device 1400 to perform the method described in the above method embodiment.
  • the computer program 1403 may be fixed in the processor 1401, in which case the processor 1401 may be implemented by hardware.
  • 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 the present application may be implemented in 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 may 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.
  • CMOS complementary metal oxide semiconductor
  • N-type metal oxide semiconductor nMetal-oxide-semiconductor
  • PMOS bipolar junction transistor
  • BJT bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the structure of the terminal device described in the above embodiment may not be limited by FIG. 14.
  • the terminal device may be an independent device or may be a part of a larger device.
  • the terminal device may be:
  • the IC set may also include a storage component for storing data and computer programs;
  • ASIC such as modem
  • 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.
  • the chip further includes a memory 1503, and the memory 1503 is used to store necessary computer programs and data.
  • 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.
  • the present application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above-mentioned method embodiments.
  • the computer program product includes one or more computer programs.
  • 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.
  • the computer program can be transmitted from a website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center.
  • 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 (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a high-density digital video disc (DVD)), or a semiconductor medium (e.g., a solid state disk (SSD)), etc.
  • a magnetic medium e.g., a floppy disk, a hard disk, a magnetic tape
  • an optical medium e.g., a high-density digital video disc (DVD)
  • DVD high-density digital video disc
  • SSD solid state disk
  • At least one in the present application can also be described as one or more, and a plurality can be two, three, four or more, which is not limited in the present application.
  • the technical features in the technical feature are distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D”, etc., and there is no order of precedence or size between the technical features described by the "first”, “second”, “third”, “A”, “B”, “C” and “D”.
  • the corresponding relationships shown in each table in the present application can be configured or predefined.
  • the values of the information in each table are only examples and can be configured as other values, which are not limited by the present application.
  • the corresponding relationships shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc.
  • the names of the parameters shown in the titles in 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 be other values or representations that can be understood by the communication device.
  • 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.
  • the predefined in the present application may be understood as defined, predefined, stored, pre-stored, pre-negotiated, pre-configured, solidified, or pre-burned.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente divulgation se rapporte au domaine technique des communications, et concerne un système de communication réparti basé sur la technologie MIMO. Le système de communication comprend au moins une unité de commande (UC), une pluralité de points d'émission et de réception (TRP) et au moins un dispositif terminal ; la ou les UC sont utilisées pour planifier la pluralité de TRP ; l'UC correspond à une grappe TRP, la grappe TRP comprend au moins deux TRP, et les TRP dans la grappe TRP peuvent être planifiés par l'UC correspondant à la grappe TRP ; le dispositif terminal correspond à un groupe TRP, et les TRP fournissant simultanément des services de communication pour le même dispositif terminal appartiennent au même groupe TRP ; le groupe TRP comprend au moins un TRP, et les TRP inclus dans le groupe TRP appartiennent à la même grappe TRP ou à différentes grappes TRP ; et le nombre de TRP inclus dans le groupe TRP peut être modifié de manière dynamique. Selon le système de communication réparti basé sur la technologie MIMO selon la présente divulgation, un transfert intercellulaire fréquent peut être évité, ce qui permet d'assurer la qualité de communication et la stabilité de communication.
PCT/CN2022/141200 2022-12-22 2022-12-22 Système de communications reparti à entrées multiples sorties multiples (mimo) Ceased WO2024130668A1 (fr)

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CN202280100996.6A CN120019623A (zh) 2022-12-22 2022-12-22 一种基于分布式多输入多输出mimo的通信系统
PCT/CN2022/141200 WO2024130668A1 (fr) 2022-12-22 2022-12-22 Système de communications reparti à entrées multiples sorties multiples (mimo)

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CN104137645A (zh) * 2012-02-28 2014-11-05 阿尔卡特朗讯 用于控制移动通信系统中的传输点的装置、方法和计算机程序
CN109891990A (zh) * 2016-10-28 2019-06-14 索尼公司 移动通信系统实体
CN112204915A (zh) * 2018-05-25 2021-01-08 高通股份有限公司 具有动态trp群集的多传送/接收点(多trp)传输

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CN114389772B (zh) * 2020-10-20 2024-05-07 大唐移动通信设备有限公司 信息管理方法及装置
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CN104137645A (zh) * 2012-02-28 2014-11-05 阿尔卡特朗讯 用于控制移动通信系统中的传输点的装置、方法和计算机程序
US20130267239A1 (en) * 2012-04-09 2013-10-10 Telefonaktiebolaget L M Ericsson (Publ) Dynamic Clustering for Coordinated Transmission in Wireless Communication Systems
CN109891990A (zh) * 2016-10-28 2019-06-14 索尼公司 移动通信系统实体
CN112204915A (zh) * 2018-05-25 2021-01-08 高通股份有限公司 具有动态trp群集的多传送/接收点(多trp)传输

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