WO2019165861A1 - Dispositif de réseau et procédé de programmation - Google Patents

Dispositif de réseau et procédé de programmation Download PDF

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Publication number
WO2019165861A1
WO2019165861A1 PCT/CN2019/072513 CN2019072513W WO2019165861A1 WO 2019165861 A1 WO2019165861 A1 WO 2019165861A1 CN 2019072513 W CN2019072513 W CN 2019072513W WO 2019165861 A1 WO2019165861 A1 WO 2019165861A1
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Prior art keywords
network device
terminal device
user
scheduling
inter
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PCT/CN2019/072513
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English (en)
Chinese (zh)
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石娴文
楼群芳
吴宪
陈拓
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华为技术有限公司
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Publication of WO2019165861A1 publication Critical patent/WO2019165861A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/27—Control channels or signalling for resource management between access points
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/51—Allocation or scheduling criteria for wireless resources based on terminal or device properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/53—Allocation or scheduling criteria for wireless resources based on regulatory allocation policies
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/535—Allocation or scheduling criteria for wireless resources based on resource usage policies

Definitions

  • the present application relates to the field of wireless communications technologies, and in particular, to a scheduling method and a network device.
  • inter-cell cooperation can be adopted to improve the edge user experience rate and ensure the consistency of the mobile user experience, for example, in a Long Term Evolution (LTE) system or a New Radio (NR) system. , will use inter-cell collaboration.
  • LTE Long Term Evolution
  • NR New Radio
  • Joint Transmission may include: Coherent-Joint Transmission (CO-JT) Non-Coherent-Joint Transmission (NC-JT), but regardless of the type of joint transmission, there will be insufficient hybrid automatic repeat reQuest (HARQ) process, when inter-station joint transmission If the user's HARQ process is insufficient, the user cannot be scheduled. Even if there are resource block (RB) resources, they can only be scheduled to other users in the cell. The user's own throughput rate will still decrease if there are no other users in the cell. The overall system throughput rate will also drop. Similarly, there is also a problem that the HARQ process is insufficient under the IPRAN scenario in the NR system.
  • CO-JT Coherent-Joint Transmission
  • N-JT Non-Coherent-Joint Transmission
  • HARQ hybrid automatic repeat reQuest
  • the prior art adopts a dual HARQ buffering mechanism, and the base station caches data of the HARQ process that does not receive an acknowledgement (ACK) or a negative ACKnowledgment (NACK), and utilizes the HARQ.
  • the process transmits new data. If the ACK is fed back by the user equipment (User Equipment, UE), the old HARQ buffer is released. If the base station receives the NACK fed back by the UE, the HARQ cache data is transmitted as the initial data.
  • the dual HARQ buffering mechanism adopted in the prior art although reducing the user's throughput loss, also loses the HARQ combining gain of codeword retransmission.
  • the base station also buffers the old HARQ data, which also increases the overhead of the base station.
  • the embodiment of the present application provides a scheduling method and a network device, which are used for pre-scheduling a terminal device and ensuring a HARQ combining gain of the user.
  • the embodiment of the present application provides the following technical solutions:
  • the embodiment of the present application provides a scheduling method, including: acquiring, by a first network device, user information of a first terminal device in a coordinated cell, where the first network device is deployed with a primary serving cell, where the first The terminal device is in the coverage of the primary serving cell and the coordinated cell at the same time; the first network device allocates a first scheduling resource to the first terminal device from the reserved scheduling resource according to the user information; The first network device configures a number of hybrid automatic repeat request HARQ processes for the primary serving cell according to the loopback time of the primary serving cell; the first network device indicates the first to the coordinated cell The first scheduling resource allocated by the terminal device.
  • the first terminal device is in the coverage of the primary serving cell and the coordinated cell, and the first network device is deployed with the primary serving cell, where the first network device can obtain the first in the coordinated cell.
  • the first network device allocates a first scheduling resource to the first terminal device from the reserved scheduling resource according to the user information of the first terminal device, and the first network device according to the loopback time of the primary serving cell
  • the number of the HARQ processes is configured for the primary serving cell.
  • the first network device indicates, to the coordinated cell, the first scheduling resource that is allocated by the first terminal device, so that the coordinated cell can obtain the The first scheduling resource allocated by the first terminal device.
  • the pre-scheduling of the first terminal device is performed in the primary serving cell, and the first network device may configure the number of corresponding HARQ processes according to the loopback time that the user actually transmits in different cells to ensure the HARQ combining gain of the user.
  • the method further includes: the first network device determining, according to the user information, The user type of the first terminal device, the user type includes: an inter-station pre-scheduled retransmission user, an inter-station pre-scheduled new transmission user, a current retransmission user in the station, a current retransmission user in a single cell, and a current new user in the station.
  • the single cell is currently a new user.
  • the inter-station pre-scheduled retransmission user refers to a user who pre-schedules the retransmission data jointly by multiple network devices, and the retransmission data refers to the user who needs to retransmit the data due to the transmission failure.
  • the inter-station pre-scheduled new-transmission user refers to a user who pre-schedules newly-transmitted data jointly by multiple network devices, and the newly transmitted data refers to the data transmitted for the first time.
  • the current retransmission user in the station refers to a user that transmits retransmission data in a current transmission resource by multiple cells in a single network device.
  • the current retransmission user in a single cell refers to a single cell transmitting the retransmission data in the current transmission resource.
  • the current new user in the station refers to a user who transmits new data in the current transmission resource by multiple cells in a single network device.
  • the current new user in a single cell refers to a single cell transmitting the newly transmitted data in the current transmission resource. user.
  • the first network device allocates a first scheduling resource to the first terminal device from the reserved scheduling resource according to the user information, including: the first network device Determining, according to the user information, that the first terminal device adopts inter-station non-coherent joint transmission NC-JT; and the first network device determines that a pre-scheduling order is that the scheduling priority of the inter-station pre-scheduled retransmission user is higher than that of the And the first network device allocates the first scheduling resource to the first terminal device from the reserved scheduling resources according to the pre-scheduling order.
  • the first network device uses the inter-station NC-JT, and the first network device determines the foregoing pre-scheduling sequence.
  • the inter-station pre-scheduled retransmission user has a higher scheduling priority than the inter-station pre-schedule
  • the scheduling priority of the newly transmitted user that is, if there is an idle HARQ process, the idle HARQ process is used for the joint transmission of the pre-scheduled retransmission user, and if there is no pre-scheduled retransmission data, the HARQ process is used. Assigned to pre-scheduled new users.
  • the first network device when the user type of the first terminal device is an inter-station pre-scheduled retransmission user or a pre-scheduled retransmission user, the first network device performs pre-scheduling for the first terminal device, which can improve resources for the HARQ process.
  • the utilization rate improves the perceived rate of the joint transmission user and does not cause loss to the average performance of the cell.
  • the first network device allocates the first scheduling resource to the first terminal device from the reserved scheduling resource according to the user information, including: when the first terminal When the user type of the device is the inter-station pre-scheduled retransmission user, or the inter-station pre-scheduled new-transmission user, the first network device allocates the first terminal device to the first terminal device from the reserved scheduling resource.
  • the first scheduling resource or, when the user type of the first terminal device is the current retransmission user or the current new transmission user, the first network device pre-schedules retransmission users for the inter-station Or the first scheduling resource is allocated to the first terminal device in the scheduling resource remaining after the inter-station pre-scheduled new-transmission user allocates the scheduling resource.
  • the scheduling resource may be allocated to the first terminal device, and the same
  • the user type of the second terminal device is an inter-station pre-scheduled retransmission user or an inter-station pre-scheduled new transmission user, and the scheduling resource may be allocated to the second terminal device.
  • the second terminal device may be allocated scheduling resources, and the first terminal device The user type is the current retransmission user or the current new transmission user, and the first scheduling resource may be allocated to the first terminal device from the scheduling resources remaining after the scheduling resource is allocated to the second terminal device.
  • the first network device may allocate according to the following scheduling sequence: the current retransmission user has a higher scheduling priority than the current new user.
  • the scheduling priority is such that the retransmission can be scheduled with priority, so that the HARQ combining gain can be guaranteed.
  • the method further includes: when the first The user type of the terminal device is the inter-station pre-scheduled retransmission user, or the inter-station pre-scheduled retransmission user, and the number of HARQ processes reserved by the first network device for the first terminal device If the user type of the first terminal device is the inter-station pre-scheduled new user, the first network device reserves a HARQ process for the first terminal device, when the first When the user type of the terminal device is the inter-station pre-scheduled retransmission user, the first network device reserves the number of HARQ processes for the first terminal device to be 0.
  • the first network device may set different scheduling criteria according to the user type of the first terminal device.
  • One of the scheduling criteria is the current retransmission priority, that is, the HARQ reserved by the first network device for the first terminal device when the user type of the first terminal device is an inter-station pre-scheduled retransmission user or a pre-scheduled new inter-station user.
  • the number of processes is 0. Therefore, the first terminal device does not reserve the HARQ process for the first terminal device, regardless of whether the inter-station pre-scheduled new transmission or the inter-station pre-scheduled retransmission is used.
  • Another scheduling criterion set by the first network device may also be a pre-scheduled new transmission priority, that is, when the user type of the first terminal device is an inter-station pre-scheduled new transmission user, the first network device reserves HARQ for the first terminal device.
  • the number of the HARQ processes reserved by the first network device for the first terminal device is 0, so the first terminal device adopts the inter-station pre-scheduling new mode when the user type of the first terminal device is the pre-scheduled retransmission user.
  • the HARQ process is reserved for the first terminal device, so that the reserved HARQ processes can be used for pre-scheduling new transmissions to effectively utilize the HARQ process resources.
  • the method further includes: the first The network device schedules the first terminal device according to a predetermined scheduling priority order.
  • the first network device may obtain the user type of the first terminal device, so that the scheduling priority order corresponding to the first terminal device may be determined according to the user type of the first terminal device, and the first network device preferentially according to the scheduling The first terminal device is scheduled in sequence from high to low.
  • the scheduling performed on the first terminal device refers to the real scheduling, and the real scheduling is to send the downlink to the first terminal device after the pre-scheduling is completed. data.
  • the scheduling priority order includes, in order from high to low, the inter-station pre-scheduled retransmission user, the inter-station pre-scheduled new transmission user, and the current weight in the station.
  • the user the current new user in the station.
  • the first terminal device can be preferentially scheduled.
  • the first network device is next. The inter-station pre-scheduled new transmission is performed.
  • the first network device manages multiple terminal devices (for example, the first terminal device, the second terminal device, and the The third terminal device uses the scheduling scheme to ensure that the pre-scheduling can be better than the current transmission.
  • the second terminal device may be a pre-scheduled user, and the first terminal is the current transmission user. In this case, the pre-scheduling The user's priority is higher than the current transfer user's priority.
  • the first network device schedules the first terminal device according to a predetermined scheduling priority order, including: when the user type of the first terminal device is the When the inter-station pre-schedules a new user, the first network device sends, by the first HARQ process of the primary serving cell, the inter-station pre-scheduled new data to the first terminal device in conjunction with the coordinated cell.
  • the first network device may use the primary serving cell, and send the inter-station pre-scheduled new data to the first terminal device in association with the coordinated cell, that is, the first A network device uses a first HARQ process of the primary serving cell, and the second network device uses the first HARQ process of the coordinated cell to jointly send inter-station pre-scheduled new data to the first terminal device, where the inter-station pre-schedules the newly transmitted data.
  • the user type of the first terminal device is downlink data sent by the first network device when the inter-station pre-schedules a new user. Therefore, the first terminal device may receive the inter-station pre-scheduled new transmission data from the first HARQ process of the primary serving cell and the first HARQ process of the coordinated cell, respectively, to implement the HARQ combining gain of the first terminal device.
  • the first network device schedules the first terminal device according to a predetermined scheduling priority order, and further includes: when the inter-station pre-scheduled new transmission data is included When a codeword has a transmission error, the first network device retransmits the codeword with the transmission error to the first terminal device in association with the coordinated cell by using the first HARQ process; or When there is a transmission error in two codewords in the inter-station pre-scheduled new transmission data, the first network device sends the first terminal device to the first terminal device by using the single first HARQ process of the primary serving cell The two codewords with the transmission error are retransmitted.
  • An achievable situation is that when there is a transmission error in one of the inter-station pre-scheduled new transmission data, the first network device may retransmit the existence to the first terminal device jointly with the coordinated cell by using the first HARQ process.
  • the retransmission codeword is retransmitted in the primary serving cell, and the first HARQ process in the new transmission is still used to ensure the HARQ combining gain of the retransmission.
  • Another achievable situation is that when there are two transmission errors in the inter-station pre-scheduled new transmission data, the first network device is heavy to the first terminal device through the first HARQ process of the single primary serving cell.
  • the two codewords that are retransmitted are single-cell retransmission in the primary serving cell, that is, the first HARQ process when the new transmission is still used. To ensure retransmission of HARQ combining gain.
  • the first network device schedules the first terminal device according to a predetermined scheduling priority order, and further includes: when the inter-station pre-scheduled new transmission data is included When there is a transmission error in both codewords, the first network device retransmits the one of the codewords with the transmission error to the first terminal device by using the single first HARQ process of the primary serving cell.
  • the first network device delays retransmission of the another codeword having the transmission error to the first terminal device by using the single first HARQ process of the primary serving cell; or Transmitting, by the first network device, another codeword having a transmission error by using a pre-scheduling of the primary serving cell and the coordinated cell; or, the first network device newly transmits through a single primary serving cell There is another codeword with a transmission error.
  • the scheme of delay retransmission still using the first HARQ process since the codeword transmitted by the delay is still retransmitted by the same first HARQ process next time, the retransmission HARQ combining gain is guaranteed.
  • a pre-scheduled new transmission of another codeword with a transmission error can be implemented, so that the original The first HARQ process ensures that the number of HARQ processes is sufficient for the primary serving cell.
  • a single cell new transmission of another codeword with a transmission error can be implemented, so that the original first HARQ process is no longer occupied. Ensure that the number of HARQ processes is sufficient for the primary serving cell.
  • the first network device schedules the first terminal device according to a predetermined scheduling priority order, and further includes: when the inter-station pre-scheduled new transmission data is included When there is a transmission error in both codewords, the first network device newly transmits the two codewords with the transmission error through the pre-scheduling of the primary serving cell and the coordinated cell. Wherein, when there are transmission errors in the two codewords, the first network device transmits the two codewords with the transmission error by means of pre-scheduled new transmission between the stations, so that the first terminal device can re-receive the two codes with the transmission error. word.
  • the first network device configures the number of the HARQ processes for the primary serving cell according to the loopback time of the primary serving cell, including: the first network device according to the The loopback time of the primary serving cell and the loopback time of the coordinated cell determine the number of HARQ processes of the primary serving cell; the first network device classifies the HARQ process of the primary serving cell according to different codewords. Determining a mapping relationship between the codeword and the HARQ process.
  • the HARQ process is defined by codewords or TBs in the embodiment of the present application, and different HARQ process ranges are divided according to the actual minimum RTT capability on the two cells, that is, each codeword is assigned a different HARQ Id range, and Conducive to the sharing of HARQ process resources when transmitting on two cells, while ensuring the HARQ combining gain of the joint transmission users, the HARQ process resources are saved.
  • the embodiment of the present application provides a scheduling method, including: a second network device sends user information of a first terminal device in a coordinated cell to a first network device, where a coordinated cell is deployed on the second network device, a primary serving cell is deployed on the first network device, where the first terminal device is in the coverage of the primary serving cell and the coordinated cell; and the second network device obtains the first network device indication The first scheduling resource allocated for the first terminal device; the second network device configures the number of HARQ processes for the coordinated cell according to the loopback time of the coordinated cell and the feedback delay of the coordinated cell.
  • the second network device may send, to the first network device, user information of the first terminal device in the coordinated cell, where the second network device acquires, by the first network device, the first terminal device that is allocated by the first network device.
  • the first scheduling resource the second network device may determine, according to the indication, the first scheduling resource allocated by the first network device to the first terminal device, and the second network device cooperates according to the loopback time of the coordinated cell and the feedback delay of the coordinated cell.
  • the number of HARQ processes configured in the cell The second network device can configure the number of corresponding HARQ processes according to the loopback time and the feedback delay that the user actually transmits in different cells to ensure the HARQ combining gain of the user.
  • the method further includes: sending, by the second network device, the inter-station pre-scheduled new transmission data to the first terminal device by using the first HARQ process of the coordinated cell with the primary serving cell.
  • the first network device may use the primary serving cell, and send the inter-station pre-scheduled new data to the first terminal device in association with the coordinated cell, that is, the first A network device uses a first HARQ process of the primary serving cell, and the second network device uses the first HARQ process of the coordinated cell to jointly send inter-station pre-scheduled new data to the first terminal device, so the first terminal device can separately from the primary device.
  • the first HARQ process of the serving cell and the first HARQ process of the coordinated cell receive pre-scheduled new data between the stations to implement HARQ combining gain of the first terminal device.
  • the method further includes: when there is a transmission error in one of the inter-station pre-scheduled new transmission data, the second network device follows the first network device Transmitting a reserved transmission resource, using the first HARQ process of the coordinated cell to newly transmit data to the first terminal device; or, when the inter-station pre-scheduled new data in the two codewords
  • the second network device uses the idle HARQ process of the coordinated cell to transmit data to the first terminal device according to the transmission resource reserved when the first network device performs pre-scheduling.
  • the idle HARQ process is different from the first HARQ process in the HARQ process.
  • the codeword to be retransmitted is retransmitted in the primary serving cell, that is, the first network device still uses the first HARQ process in the new transmission to transmit the wrong codeword.
  • the coordinated cell newly transmits data according to the resources reserved by the pre-scheduling, and still uses the same first HARQ process to transmit new data. If both codewords are transmitted with errors, the two codewords that are retransmitted are single-cell retransmission in the primary serving cell, that is, the first network device still uses the same first HARQ process to ensure retransmission of the HARQ combining gain.
  • the coordinated cell transmits new data according to the pre-scheduled reserved resources, and uses another idle HARQ process under the PDCCH, so that the resource utilization of the HARQ process can be improved.
  • the second network device configures the number of HARQ processes for the coordinated cell according to the loopback time of the coordinated cell and the feedback delay of the coordinated cell, including: Determining, by the second network device, the number of HARQ processes of the coordinated cell according to a loopback time of the primary serving cell, a loopback time of the coordinated cell, and a feedback delay of the coordinated cell; the second network device
  • the HARQ process of the coordinated cell is classified according to different codewords, and the mapping relationship between the codeword and the HARQ process is determined.
  • the HARQ process of the coordinated cell is classified according to different codewords.
  • the HARQ process of the coordinated cell may be classified according to the TB, where the codeword and the transport block are in one-to-one correspondence, and the codeword is physical.
  • the concept in layers, transport blocks are concepts in the MAC layer.
  • the HARQ process is defined by codewords or TBs in the embodiments of the present application, and different HARQ process ranges are divided according to the actual minimum RTT capability on the two cells, that is, each codeword is assigned a different HARQId range, which is beneficial to
  • the sharing of HARQ process resources when transmitting on two cells ensures the HARQ process resources while ensuring the HARQ combining gain of the joint transmission users.
  • the embodiment of the present application provides a network device, where the network device is specifically a first network device, where the first network device includes: a processing module, configured to acquire user information of the first terminal device in the coordinated cell.
  • the first network device is deployed with the primary serving cell, and the first terminal device is in the coverage of the primary serving cell and the coordinated cell.
  • the processing module is further configured to use the user information. Allocating a first scheduling resource to the first terminal device from the reserved scheduling resource; the processing module is further configured to configure a hybrid automatic repeat request for the primary serving cell according to a loopback time of the primary serving cell The number of the HARQ processes; the sending module is further configured to indicate, to the coordinated cell, the first scheduling resource that is allocated by the first terminal device.
  • the processing module is further configured to: after acquiring user information of the first terminal device in the coordinated cell, determine, according to the user information, a user type of the first terminal device, where The user types include: inter-station pre-scheduled retransmission users, inter-station pre-scheduled new transmission users, current retransmission users in the station, current retransmission users in a single cell, current new users in the station, and current new users in a single cell.
  • the processing module is specifically configured to determine, according to the user information, that the first terminal device adopts inter-station non-coherent joint transmission NC-JT; the first network device determines a pre- The scheduling order is that the scheduling priority of the inter-station pre-scheduled retransmission user is higher than the scheduling priority of the inter-station pre-scheduled retransmission user; and the first scheduling resource is reserved according to the pre-scheduling order.
  • the terminal device allocates the first scheduling resource.
  • the processing module is specifically configured to: when the user type of the first terminal device is the inter-station pre-scheduled retransmission user, or the inter-station pre-scheduled new user Allocating the first scheduling resource to the first terminal device from the reserved scheduling resource; or when the user type of the first terminal device is the current retransmission user or the current new transmission user
  • the first scheduling resource is allocated to the first terminal device from the scheduling resources remaining after the scheduling resource is allocated to the inter-station pre-scheduled retransmission user or the inter-station pre-scheduled new transmission user.
  • the processing module is further configured to: after configuring a number of HARQ processes for the primary serving cell according to a loopback time of the primary serving cell, when the first terminal device is configured When the user type is the inter-station pre-scheduled retransmission user, or the inter-station pre-scheduled new-transmission user, the number of HARQ processes reserved for the first terminal device is 0; or, when the first terminal When the user type of the device is the inter-station pre-scheduled retransmission user, the first terminal device reserves a HARQ process, when the user type of the first terminal device is the inter-station pre-scheduled retransmission user, The number of HARQ processes reserved for the first terminal device is 0.
  • the processing module is further configured to: after indicating, to the coordinated cell, the first scheduling resource that is allocated by the first terminal device, according to a predetermined scheduling priority order Scheduling the first terminal device.
  • the scheduling priority order includes, in order from high to low, the inter-station pre-scheduled retransmission user, the inter-station pre-scheduled new transmission user, and the current weight in the station. The user, the current new user in the station.
  • the processing module is specifically configured to: when the user type of the first terminal device is the inter-station pre-scheduled new user, pass the first of the primary serving cell
  • the HARQ process in conjunction with the coordinated cell, sends inter-station pre-scheduled new transmission data to the first terminal device.
  • the processing module is configured to: when the one of the inter-station pre-scheduled new transmission data has a transmission error, pass the first HARQ process, and Cooperating the cell to retransmit the codeword with the transmission error to the first terminal device; or, when there is a transmission error in two codewords in the pre-scheduled new data of the inter-station, through a single The first HARQ process of the primary serving cell retransmits the two codewords with a transmission error to the first terminal device.
  • the processing module is configured to: when there is a transmission error in two codewords in the pre-scheduled new transmission data between the stations, through a single primary serving cell Retransmitting, by the first HARQ process, one of the codewords having the transmission error to the first terminal device; and, to the first terminal device by using the single first HARQ process of the primary serving cell Delaying retransmission of the other codeword having a transmission error; or transmitting, by the pre-scheduling of the primary serving cell and the coordinated cell, another codeword having a transmission error; or, by a single The primary serving cell newly transmits another codeword with a transmission error.
  • the processing module is specifically configured to: when the two pre-scheduled new data in the inter-station pre-scheduled data has a transmission error, pass the primary serving cell and the The pre-scheduling of the coordinated cell joint transmits the two codewords with the transmission error.
  • the processing module is configured to determine a number of HARQ processes of the primary serving cell according to a loopback time of the primary serving cell and a loopback time of the coordinated cell. And classifying the HARQ process of the primary serving cell according to different codewords, and determining a mapping relationship between the codeword and the HARQ process.
  • the constituent modules of the first network device may also perform the steps described in the foregoing first aspect and various possible implementations, as described above in relation to the first aspect and various possible implementations. In the description.
  • the embodiment of the present application provides a network device, where the network device is specifically a second network device, where the second network device includes: a sending module, configured to send, to the first network device, a User information of a terminal device, the coordinated cell is deployed on the second network device, a primary serving cell is deployed on the first network device, and the first terminal device is in the primary serving cell and the a processing module, configured to acquire pre-scheduling information sent by the first network device, where the pre-scheduling information includes: indication information indicating that the first scheduling resource is allocated to the first terminal device;
  • the processing module is further configured to configure the number of HARQ processes for the coordinated cell according to a loopback time of the coordinated cell and a feedback delay of the coordinated cell.
  • the processing module is further configured to: after configuring a number of HARQ processes for the coordinated cell according to a loopback time of the coordinated cell and a feedback delay of the coordinated cell, The first HARQ process of the coordinated cell, in conjunction with the primary serving cell, sends inter-station pre-scheduled new data to the first terminal device.
  • the processing module is further configured to perform pre-scheduling according to the first network device when there is a transmission error in one of the inter-station pre-scheduled new transmission data.
  • the process is not the same as the HARQ process.
  • the processing module is specifically configured to determine, according to a loopback time of the primary serving cell, a loopback time of the coordinated cell, and a feedback delay of the coordinated cell. a number of HARQ processes of the coordinated cell; classifying the HARQ process of the coordinated cell according to different codewords, and determining a mapping relationship between the codeword and the HARQ process.
  • the constituent modules of the second network device may also perform the steps described in the foregoing second aspect and various possible implementations, as described in the foregoing for the second aspect and various possible implementations. In the description.
  • the embodiment of the present application provides a network device, specifically a first network device, where the first network device includes: a processor and a memory; the memory is used to store an instruction; and the processor is configured to execute the memory.
  • the instructions in the method of causing the communication device to perform the method of any of the preceding aspects.
  • the embodiment of the present application provides a network device, specifically a second network device, where the second network device includes: a processor and a memory; the memory is used to store an instruction; and the processor is configured to execute the memory.
  • the instructions in the method of causing the communication device to perform the method of any of the preceding second aspects.
  • the present application provides a chip system including a processor for supporting a network device to implement the functions involved in the above aspects, such as, for example, transmitting or processing data involved in the above method and/or information.
  • the chip system further includes a memory for storing necessary program instructions and data of the network device.
  • the chip system can be composed of chips, and can also include chips and other discrete devices.
  • the present application provides a computer readable storage medium having instructions stored therein that, when executed on a computer, cause the computer to perform the methods described in the above aspects.
  • the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the methods described in the above aspects.
  • FIG. 1 is a schematic structural diagram of a system applied to a scheduling method according to an embodiment of the present disclosure
  • FIG. 2 is a schematic block diagram of a scheduling method according to an embodiment of the present disclosure
  • FIG. 3 is a schematic block diagram of another scheduling method according to an embodiment of the present disclosure.
  • FIG. 4 is a schematic diagram of a scenario of IPRAN CoMP distributed scheduling according to an embodiment of the present disclosure
  • FIG. 5-a is a schematic diagram of reserving RB resources under retransmission priority scheduling criteria according to an embodiment of the present disclosure
  • FIG. 5-b is a schematic diagram of a reserved RB resource and a HARQ process in a pre-scheduling priority scheduling criterion according to an embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart of scheduling performed by a pre-scheduling in a primary serving cell according to an embodiment of the present disclosure
  • FIG. 7 is a schematic flowchart of a scheduling process of IPRAN CoMP distributed scheduling according to an embodiment of the present disclosure
  • FIG. 8 is a schematic diagram of interaction between a base station and a UE in an IPRAN HARQ scheduling scenario according to an embodiment of the present disclosure
  • FIG. 9 is a schematic diagram of allocating a HARQ process in a primary serving cell and a coordinated cell according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic diagram of allocating a HARQ process by using two PDCCHs according to an embodiment of the present disclosure
  • FIG. 11 is another schematic diagram of allocating a HARQ process by using two PDCCHs according to an embodiment of the present disclosure
  • FIG. 12 is a schematic diagram of interaction between a base station and a UE in another IPRAN HARQ scheduling scenario according to an embodiment of the present disclosure
  • FIG. 13 is a schematic diagram of allocating a HARQ process in pre-scheduling and real scheduling according to an embodiment of the present disclosure
  • FIG. 14 is a schematic diagram of another HARQ process allocated in pre-scheduling and real scheduling according to an embodiment of the present disclosure
  • FIG. 15 is a schematic diagram of separately assigning HARQ processes for different codewords according to an embodiment of the present disclosure
  • FIG. 16 is a schematic structural diagram of a first network device according to an embodiment of the present disclosure.
  • FIG. 17 is a schematic structural diagram of a second network device according to an embodiment of the present disclosure.
  • FIG. 18 is a schematic structural diagram of another first network device according to an embodiment of the present disclosure.
  • FIG. 19 is a schematic structural diagram of another second network device according to an embodiment of the present disclosure.
  • the embodiment of the present application provides a scheduling method and a network device, which are used for pre-scheduling a terminal device and ensuring a HARQ combining gain of the user.
  • LTE Long Term Evolution
  • NR new radio
  • LTE evolved LTE
  • a schematic structural diagram of a system may include: a first network device, a second network device, and a first terminal device, where the first terminal device may have one or more .
  • Terminal devices related to the present application various handheld devices having wireless communication functions, in-vehicle devices, wearable devices, computing devices, or other processing devices connected to a wireless modem, and various forms of user equipment (User Equipment, UE) , mobile station (MS), terminal, terminal equipment, and the like.
  • UE User Equipment
  • MS mobile station
  • terminal terminal equipment
  • the network device involved in the present application may include a base station (BS), which is a device deployed in the radio access network to provide a wireless communication function for the UE.
  • the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and the like.
  • the name of a device having a base station function may be different, for example, in an LTE system, an evolved Node B (evolved Node B abbreviation: eNB or eNodeB), in the NR system.
  • eNB evolved Node B
  • eNodeB evolved Node B
  • eNB evolved Node B
  • eNodeB evolved Node B
  • the third generation 3G system it is called Node B and so on.
  • Two different types of network devices are provided in the system provided by the embodiment of the present application: a first network device and a second network device.
  • a primary serving cell is deployed on the first network device, and a coordinated cell is deployed on the second network device, where the first terminal device is in the coverage of the primary serving cell and the coordinated cell, and the first network device reserves the reserved resource.
  • Configuring a first scheduling resource for the first terminal device for example, the reserved scheduling resource may be a resource block (RB) resource, or may be another resource used by the network device to send downlink data to the terminal device, where not Make a limit.
  • RB resource block
  • the first network device may indicate, to the second network device, the first scheduling resource that is allocated by the first terminal device, for example, the first network device may send pre-scheduling information, The first scheduling resource allocated for the first terminal device is indicated by the pre-scheduling information.
  • an embodiment of the scheduling method of the present application may include:
  • the first network device acquires user information of the first terminal device in the coordinated cell.
  • the first network device is deployed with the primary serving cell, where the first terminal device is in the coverage of the primary serving cell and the coordinated cell.
  • the first terminal device in the coverage of the primary serving cell and the coordinated cell, and the first terminal device can implement joint transmission by using the primary serving cell and the coordinated cell.
  • the primary serving cell and the coordinated cell simultaneously send the same or different downlink data to the first terminal device, so that joint transmission can be implemented.
  • the number of coordinated cells used by the first terminal device is not limited, and may be one coordinated cell or multiple coordinated cells.
  • a primary serving cell is deployed on the first network device
  • a coordinated cell is deployed on the second network device
  • the second network device may first obtain user information of the first terminal device in the coordinated cell, and then The second network device sends the user information of the first terminal device to the first network device, and the first network device can receive the user information of the first terminal device from the second network device.
  • the user information of the first terminal device may include at least one of the following information: user channel state information (CSI) and a user's scheduling priority (Priority).
  • the first network device may further obtain radio link control layer (RLC) buffer information in the coordinated cell.
  • RLC radio link control layer
  • the first network device may further configure a coordinated cell for the primary cell.
  • the scheduling method provided by the embodiment of the present application may include the following steps in addition to the foregoing steps:
  • the first network device selects a collaboration set for the first terminal device, where the collaboration set includes: a coordinated cell;
  • the first network device sends CSI measurement configuration information to the first terminal device.
  • the first terminal device may send a measurement report to the first network device after the reference signal receiving power (RSRP) of the multiple cells is measured, and the first network device may determine the first terminal according to the measurement report.
  • the device is a Joint Transmission (JT) user, and is referred to as a JT user in the following embodiments.
  • the first network device may select a coordinated cell for the first terminal device.
  • the first network device may send the CSI measurement configuration information to the first terminal device, for example, the downlink control information (DCI) or the radio resource control (RRC) signaling may be used to send the CSI measurement configuration information.
  • DCI downlink control information
  • RRC radio resource control
  • the first network device allocates a first scheduling resource to the first terminal device from the reserved scheduling resource according to the user information.
  • the first network device determines, according to the user information of the first terminal device, that the first terminal device performs pre-scheduling, for example, from the reservation.
  • the scheduling resource is allocated to the first terminal device in the scheduling resource, and the scheduling resource allocated for the first terminal device is defined as the “first scheduling resource”.
  • the reserved scheduling resource is a scheduling resource reserved for the pre-scheduling.
  • the scheduling resource may be an RB resource, or may be another resource used by the network device to send downlink data to the terminal device, which is not limited herein. .
  • the first network device when the first network device performs pre-scheduling for the first terminal device, the first network device may further determine a user type of the first terminal device.
  • the user type of the first terminal device is different.
  • the user type may include: an inter-station pre-scheduled retransmission user, an inter-station pre-scheduled new transmission user, a current retransmission user in the station, a current retransmission user in a single cell, and a current current in the station. New users and single-cell current new users.
  • the inter-station pre-scheduled retransmission user refers to a user who pre-schedules the retransmission data jointly by multiple network devices, and the retransmission data refers to the user who needs to retransmit the data due to the transmission failure.
  • the inter-station pre-scheduled new-transmission user refers to a user who pre-schedules newly-transmitted data jointly by multiple network devices, and the newly transmitted data refers to the data transmitted for the first time.
  • the current retransmission user in the station refers to a user that transmits retransmission data in a current transmission resource by multiple cells in a single network device.
  • the current retransmission user in a single cell refers to a single cell transmitting the retransmission data in the current transmission resource.
  • the current new user in the station refers to a user who transmits new data in the current transmission resource by multiple cells in a single network device.
  • the current new user in a single cell refers to a single cell transmitting the newly transmitted data in the current transmission resource.
  • the first network device may be configured with multiple terminal devices, which are a first terminal device, a second terminal device, a third terminal device, etc., and the user type of each terminal device may be the foregoing six user types. One type of user, depending on the application scenario.
  • the first network device may pre-schedule the first terminal device according to the user information of the first terminal device and the user type of the first terminal device. For example, when the user type of the first terminal device is an inter-station pre-scheduled retransmission user or an inter-station pre-scheduled retransmission user, the first network device may allocate the first scheduling resource to the first terminal device from the reserved scheduling resource. In another possible implementation manner, when the user type of the first terminal device is a single cell current retransmission user and a single cell current new transmission user, the first network device does not pre-schedule the first terminal device, that is, the first A network device does not allocate reserved scheduling resources to the first terminal device.
  • the current current retransmission and the current current transmission "current” refer to the time point that the first terminal device is using during the real scheduling, for example, the current transmission time interval (TTI).
  • TTI current transmission time interval
  • inter-station refers to a primary serving cell and a coordinated cell that use different network devices simultaneously transmit downlink data to the first terminal device
  • the aforementioned "in-station” refers to multiple cells using the same network device to the first.
  • the terminal device transmits downlink data.
  • the aforementioned "retransmission” refers to the repeated transmission of data that is erroneous at the time of initial transmission before the retransmission
  • new transmission refers to the first transmission of data to the first terminal device.
  • the first network device allocates the first terminal device from the reserved scheduling resources according to the user information, according to the implementation scenario that the first network device determines the user type of the first terminal device.
  • the first scheduling resource includes:
  • the first network device determines, according to the user information, that the first terminal device adopts NonCoherent-Joint Transmission (NC-JT);
  • the first network device determines that the pre-scheduling order is that the scheduling priority of the inter-scheduled pre-scheduled retransmission user is higher than the scheduling priority of the inter-scheduled pre-scheduled new-transmission user;
  • the first network device allocates the first scheduling resource to the first terminal device from the reserved scheduling resources according to the pre-scheduling sequence.
  • the first network device uses the inter-station NC-JT, and the first network device determines the foregoing pre-scheduling sequence.
  • the inter-station pre-scheduled retransmission user has a higher scheduling priority than the inter-station pre-schedule
  • the scheduling priority of the newly transmitted user that is, if there is an idle HARQ process, the idle HARQ process is used for the joint transmission of the pre-scheduled retransmission user, and if there is no pre-scheduled retransmission data, the HARQ process is used. Assigned to pre-scheduled new users.
  • the first network device when the user type of the first terminal device is an inter-station pre-scheduled retransmission user or a pre-scheduled retransmission user, the first network device performs pre-scheduling for the first terminal device, which can improve resources for the HARQ process.
  • the utilization rate improves the perceived rate of the joint transmission user and does not cause loss to the average performance of the cell.
  • the first terminal device may also adopt Coherent-Joint Transmission (CO-JT), and the first network device may determine that the pre-scheduling order is: scheduling priority of the inter-station pre-scheduled new-transmission user.
  • the scheduling priority of the pre-scheduled retransmission user is higher than that of the station, that is, if there is an idle HARQ process, the idle HARQ process is used for pre-scheduling the new transmission of the new transmission user.
  • the HARQ process is then assigned to the pre-scheduled retransmission user.
  • the first network device allocates the first terminal device from the reserved scheduling resources according to the user information, according to the implementation scenario that the first network device determines the user type of the first terminal device.
  • a scheduling resource including:
  • the first network device allocates the first scheduling resource to the first terminal device from the reserved scheduling resource; or ,
  • the first network device When the user type of the first terminal device is the current retransmission user or the current new transmission user, the first network device is in the scheduling resource remaining after allocating the scheduling resource for the inter-station pre-scheduled retransmission user or the inter-station pre-scheduled new transmission user. Allocating a first scheduling resource to the first terminal device.
  • the first network device first allocates the first scheduling resource from the reserved scheduling resource to the inter-station pre-scheduled retransmission user or the inter-station pre-scheduled new transmission user, and then performs the pre-scheduled remaining scheduling resource when the real scheduling is performed.
  • non-inter-station pre-scheduled transmissions may include: current retransmissions and current new transmissions.
  • the scheduling resource may be allocated to the first terminal device.
  • the second terminal device may be allocated a scheduling resource.
  • the second terminal device may be allocated scheduling resources, and the first terminal device The user type is the current retransmission user or the current new transmission user, and the first scheduling resource may be allocated to the first terminal device from the scheduling resources remaining after the scheduling resource is allocated to the second terminal device.
  • the first network device may allocate according to the following scheduling sequence: the current retransmission user has a higher scheduling priority than the current new user.
  • the scheduling priority is such that the retransmission can be scheduled with priority, so that the HARQ combining gain can be guaranteed.
  • the first network device configures a number of HARQ processes for the primary serving cell according to a loopback time of the primary serving cell.
  • a primary serving cell is deployed on the first network device, and the first network device first obtains a loopback time of the primary serving cell.
  • the loopback time refers to the Round-Trip Time (RTT) of the primary serving cell.
  • the first network device may configure the number of HARQ processes according to the RTT of the primary serving cell. For example, the first network device may determine the minimum RTT of the primary serving cell according to the time of the data transmission and the uplink feedback of the primary serving cell, and then configure the corresponding number of HARQ processes according to the value of the minimum RTT to avoid the wireless. There is a problem that the number of HARQ processes in the network transmission scenario is insufficient.
  • the scheduling method provided by the embodiment of the present application may further include the following steps:
  • the number of HARQ processes reserved by the first network device for the first terminal device is 0; or
  • the first network device reserves a HARQ process for the first terminal device, and when the user type of the first terminal device is an inter-station pre-scheduled retransmission user, The number of HARQ processes reserved by the first network device for the first terminal device is 0.
  • the first network device may set different scheduling criteria according to the user type of the first terminal device.
  • One of the scheduling criteria is the current retransmission priority, that is, the HARQ reserved by the first network device for the first terminal device when the user type of the first terminal device is an inter-station pre-scheduled retransmission user or a pre-scheduled new inter-station user.
  • the number of processes is 0. Therefore, the first terminal device does not reserve the HARQ process for the first terminal device, regardless of whether the inter-station pre-scheduled new transmission or the inter-station pre-scheduled retransmission is used.
  • Another scheduling criterion set by the first network device may also be a pre-scheduled new transmission priority, that is, when the user type of the first terminal device is an inter-station pre-scheduled new transmission user, the first network device reserves HARQ for the first terminal device.
  • the number of the HARQ processes reserved by the first network device for the first terminal device is 0, so the first terminal device adopts the inter-station pre-scheduling new mode when the user type of the first terminal device is the pre-scheduled retransmission user.
  • the HARQ process is reserved for the first terminal device, so that the reserved HARQ processes can be used for pre-scheduling new transmissions to effectively utilize the HARQ process resources.
  • the first network device configures the number of HARQ processes for the primary serving cell according to the loopback time of the primary serving cell, including:
  • the first network device classifies the HARQ process of the primary serving cell according to different codewords, and determines a mapping relationship between the codeword and the HARQ process.
  • the first network device may determine the minimum loopback time of the two cells according to the loopback time of the primary serving cell and the loopback time of the coordinated cell, and determine the number of HARQ processes of the primary serving cell according to the minimum loopback time. .
  • the number of the HARQ processes that the primary network device can set is the same as that of the cell set in the LTE system.
  • the first network device classifies the HARQ processes of the primary serving cell according to different codewords, so that different codewords correspond to different HARQ processes.
  • the number of the HARQ processes in the primary serving cell is 12, which is the HARQ process identifier (Identifier, Id) 0-12.
  • the HARQ process identifier in the subsequent embodiment may also be referred to as the HARQId. If there are two codewords, respectively: codeword 0 and codeword 1, wherein the HARQ process corresponding to codeword 0 may be HARQId0-3, and the HARQ process corresponding to codeword 1 may be HARQId4-11. Therefore, all HARQ processes of the primary serving cell are split according to two codewords, and the total number of HARQ processes is 12. It should be noted that, in the foregoing embodiment, the HARQ process of the primary serving cell is classified according to different codewords. Similarly, the HARQ process of the primary serving cell may be classified according to a transport block (TB).
  • TB transport block
  • the codeword and the transport block are in one-to-one correspondence
  • the codeword is a concept in the physical layer
  • the transport block is a concept in a Media Access Control (MAC) layer
  • the codeword and the transport block are in different layers of the network device.
  • the HARQ process is defined by codewords or TBs in the embodiments of the present application, and different HARQ process ranges are divided according to the actual minimum RTT capability on the two cells, that is, each codeword is assigned a different HARQId range, which is beneficial to
  • the sharing of HARQ process resources when transmitting on two cells ensures the HARQ process resources while ensuring the HARQ combining gain of the joint transmission users.
  • the first network device indicates, to the coordinated cell, a first scheduling resource that is allocated by the first terminal device.
  • the first network device may indicate, to the coordinated cell, the first scheduling resource that is allocated by the first terminal device, for example, the first network device may be deployed.
  • the second network device of the coordinated cell sends the pre-scheduling information, where the pre-scheduling information is used to indicate that the first scheduling resource is allocated to the first terminal device from the reserved scheduling resource, so that the second network device can determine, according to the pre-scheduling information, The first scheduling resource allocated by the first network device to the first terminal device, so that the joint scheduling of the second network device and the first network device can be implemented.
  • the scheduling method provided by the embodiment of the present application may further include the following steps:
  • the first network device schedules the first terminal device according to a predetermined scheduling priority order.
  • the first network device may obtain the user type of the first terminal device, so that the scheduling priority order corresponding to the first terminal device may be determined according to the user type of the first terminal device, and the first network device preferentially according to the scheduling
  • the first terminal device is scheduled in sequence from high to low. It should be noted that the scheduling performed on the first terminal device refers to the real scheduling, and the real scheduling is to send the downlink to the first terminal device after the pre-scheduling is completed. data.
  • the user type of the first terminal device determines the scheduling sequence corresponding to the first terminal device in the scheduling priority order.
  • the first network device may follow the The scheduling sequence corresponding to each terminal device is used to perform real scheduling on each terminal device in sequence.
  • the specific implementation manners of the real scheduling are respectively illustrated in the following embodiments.
  • the scheduling priority order adopted by the first network device includes, in order from high to low, an inter-station pre-scheduled retransmission user, an inter-station pre-scheduled new transmission user, a current retransmission user in the station, and an in-site Current new users.
  • the first terminal device can be preferentially scheduled.
  • the first network device is next. The inter-station pre-scheduled new transmission is performed.
  • the first network device manages multiple terminal devices (for example, the first terminal device, the second terminal device, and the The third terminal device uses the scheduling scheme to ensure that the pre-scheduling can be better than the current transmission.
  • the second terminal device may be a pre-scheduled user, and the first terminal is the current transmission user. In this case, the pre-scheduling The user's priority is higher than the current transfer user's priority.
  • the first network device performs real scheduling on the first terminal device according to a predetermined scheduling priority order, including:
  • the first network device When the user type of the first terminal device is a pre-scheduled new user, the first network device sends the inter-station pre-scheduled new data to the first terminal device through the first HARQ process of the primary serving cell. .
  • the HARQ process allocated by the first network device to the first terminal device is the “first HARQ process”, and the first HARQ process refers to a certain HARQ process allocated by the first network device to the first terminal device.
  • the first network device may use the primary serving cell, and send the inter-station pre-scheduled new data to the first terminal device in association with the coordinated cell, that is, the first A network device uses a first HARQ process of the primary serving cell, and the second network device uses the first HARQ process of the coordinated cell to jointly send inter-station pre-scheduled new data to the first terminal device, where the inter-station pre-schedules the newly transmitted data.
  • the user type of the first terminal device is downlink data sent by the first network device when the inter-station pre-schedules a new user. Therefore, the first terminal device may receive the inter-station pre-scheduled new transmission data from the first HARQ process of the primary serving cell and the first HARQ process of the coordinated cell, respectively, to implement the HARQ combining gain of the first terminal device.
  • the first network device scheduling the first terminal device according to the predetermined scheduling priority order further includes:
  • the first network device When there is a transmission error in one of the inter-station pre-scheduled new transmission data, the first network device retransmits a codeword with a transmission error to the first terminal device in conjunction with the coordinated cell through the first HARQ process; or
  • the first network device When there are transmission errors in two codewords in the inter-station pre-scheduled new transmission data, the first network device retransmits two codewords with transmission errors to the first terminal device through the first HARQ process of the single primary serving cell. .
  • the first network device may receive the HARQ feedback from the first terminal device, for example, the HARQ feedback may include: Acknowledgement (ACK), or Negative Acknowledgment (NACK), if the first network device receives the ACK, it indicates that the inter-station pre-scheduled new transmission data is successfully transmitted without retransmission. If the first network device receives the NACK, it indicates the inter-station pre-scheduling. The new transmission data is transmitted incorrectly, and the first network device needs to retransmit the codeword for the newly transmitted error.
  • ACK Acknowledgement
  • NACK Negative Acknowledgment
  • An achievable situation is that when there is a transmission error in one of the inter-station pre-scheduled new transmission data, the first network device may retransmit the existence to the first terminal device jointly with the coordinated cell by using the first HARQ process.
  • the retransmission codeword is retransmitted in the primary serving cell, and the first HARQ process in the new transmission is still used to ensure the HARQ combining gain of the retransmission.
  • Another achievable situation is that when there are two transmission errors in the inter-station pre-scheduled new transmission data, the first network device is heavy to the first terminal device through the first HARQ process of the single primary serving cell.
  • the two codewords that are retransmitted are single-cell retransmission in the primary serving cell, that is, the first HARQ process when the new transmission is still used. To ensure retransmission of HARQ combining gain.
  • the first network device performs real scheduling on the first terminal device according to the predetermined scheduling priority order, and the method includes:
  • the first network device When there is a transmission error in two codewords in the inter-station pre-scheduled new transmission data, the first network device retransmits one of the codewords with the transmission error to the first terminal device through the first HARQ process of the single primary serving cell. ;as well as,
  • the first network device delays retransmission of another codeword with a transmission error to the first terminal device by using the first HARQ process of the single primary serving cell; or the pre-scheduling of the first network device by the primary serving cell and the coordinated cell Another codeword with a transmission error is newly transmitted; or, the first network device newly transmits another codeword with a transmission error through a single primary serving cell.
  • the first network device passes the first of the single primary serving cell for one of the two codewords of the transmission error
  • the HARQ process retransmits one of the codewords with the transmission error to the first terminal device, and one of the retransmitted codewords performs a single cell retransmission in the primary serving cell, that is, the first HARQ process at the time of the new transmission is still used to ensure the weight
  • the transmitted HARQ merge gain For the other codeword of the two codewords that transmit the error, the first network device may have three different transmission modes: the first network device extends to the first terminal device through the first HARQ process of the single primary serving cell.
  • the first network device Retransmitting another codeword with a transmission error; or, the first network device transmits another codeword of the transmission error through the pre-scheduling of the primary serving cell and the coordinated cell joint; or the first network device passes the single master
  • the service cell newly transmits another codeword with a transmission error.
  • a pre-scheduled new transmission of another codeword with a transmission error can be implemented, so that the original The first HARQ process ensures that the number of HARQ processes is sufficient for the primary serving cell.
  • a single cell new transmission of another codeword with a transmission error can be implemented, so that the original first HARQ process is no longer occupied. Ensure that the number of HARQ processes is sufficient for the primary serving cell.
  • the first network device performs real scheduling on the first terminal device according to the predetermined scheduling priority order, and the method includes:
  • the first network device When there are transmission errors in two codewords in the inter-station pre-scheduled new transmission data, the first network device newly transmits two codewords with transmission errors through the pre-scheduling of the primary serving cell and the coordinated cell.
  • the first network device transmits the two codewords with the transmission error by means of pre-scheduled new transmission between the stations, so that the first terminal device can re-receive the two codes with the transmission error. word.
  • the foregoing description of the present application shows that the first terminal device is in the coverage of the primary serving cell and the coordinated cell, and the primary network device is deployed on the first network device, and the first network device can obtain the coordinated
  • the first network device allocates a first scheduling resource to the first terminal device from the reserved scheduling resource according to the user information of the first terminal device, where the first network device is configured according to the ring of the primary serving cell
  • the back time is configured to configure the number of the HARQ processes for the primary serving cell.
  • the first network device indicates, to the coordinated cell, the first scheduling resource allocated by the first terminal device.
  • the pre-scheduling of the first terminal device is performed in the primary serving cell, and the first network device may configure the number of corresponding HARQ processes according to the loopback time that the user actually transmits in different cells to ensure the HARQ combining gain of the user.
  • an implementation scheme of performing pre-scheduling and real scheduling in the primary serving cell from the first network device is illustrated.
  • an implementation scheme of performing real scheduling in the coordinated cell by the second network device is illustrated.
  • the method may include:
  • the second network device sends, to the first network device, user information of the first terminal device in the coordinated cell, where the second network device is configured with a coordinated cell, where the primary network is deployed, and the first terminal device is simultaneously configured. It is within the coverage of the primary serving cell and the coordinated cell.
  • the first terminal device in the coverage of the primary serving cell and the coordinated cell, and the first terminal device can implement joint transmission by using the primary serving cell and the coordinated cell.
  • the primary serving cell and the coordinated cell simultaneously send the same or different useful data to the first terminal device, so that the combined transmission can be performed.
  • the number of coordinated cells used by the first terminal device is not limited, and may be one coordinated cell or multiple coordinated cells.
  • a primary serving cell is deployed on the first network device
  • a coordinated cell is deployed on the second network device
  • the second network device may first obtain user information of the first terminal device in the coordinated cell, and then The network device sends the user information of the first terminal device to the first network device, where the user information of the first terminal device may include at least one of the following information: a user CSI and a scheduling domain priority of the user.
  • the second network device may further send the RLC cache information in the coordinated cell to the first network device.
  • the second network device acquires, by the first network device, the first scheduling resource that is allocated by the first terminal device.
  • the first network device may indicate, to the coordinated cell, the first scheduling resource that is allocated by the first terminal device, for example, the first network device may send the deployment.
  • the second network device of the coordinated cell sends the pre-scheduling information, where the pre-scheduling information is used to indicate that the first scheduling resource is allocated from the reserved scheduling resource, and the second network device receives the pre-received from the first network device.
  • the scheduling information, the second network device may determine, according to the pre-scheduling information, the first scheduling resource allocated by the first network device to the first terminal device.
  • the second network device configures the number of HARQ processes for the coordinated cell according to the loopback time of the coordinated cell and the feedback delay of the coordinated cell.
  • a coordinated cell is deployed on the second network device, and if the feedback information sent by the first terminal device is sent to the coordinated cell by using the primary serving cell, there is a feedback delay between the primary serving cell and the coordinated cell.
  • the second network device first obtains a loopback time and a feedback delay of the coordinated serving cell, where the loopback time refers to an RTT of the coordinated cell.
  • the second network device may configure the number of HARQ processes according to the RTT of the coordinated cell and the feedback delay of the coordinated cell.
  • the second network device may determine the minimum RTT of the coordinated cell according to the time of the data transmission and the uplink feedback of the coordinated cell, and then configure the corresponding number of HARQ processes according to the minimum RTT plus the feedback delay of the coordinated cell.
  • the number of HARQ processes that can be configured for the coordinated cell is 10.
  • the scheduling method provided by the embodiment of the present application may further include The following steps:
  • the second network device sends inter-station pre-scheduled new transmission data to the first terminal device in cooperation with the primary serving cell through the first HARQ process of the coordinated cell.
  • the HARQ process allocated by the second network device to the first terminal device is the “first HARQ process”, and the first HARQ process refers to a certain HARQ process allocated by the second network device to the first terminal device.
  • the first network device may use the primary serving cell, and send the inter-station pre-scheduled new data to the first terminal device in association with the coordinated cell, that is, the first A network device uses a first HARQ process of the primary serving cell, and the second network device uses the first HARQ process of the coordinated cell to jointly send inter-station pre-scheduled new data to the first terminal device, so the first terminal device can separately from the primary device.
  • the first HARQ process of the serving cell and the first HARQ process of the coordinated cell receive pre-scheduled new data between the stations to implement HARQ combining gain of the first terminal device.
  • the scheduling method provided by the embodiment of the present application further includes the following steps:
  • the second network device uses the first HARQ process of the coordinated cell to the first terminal device according to the transmission resource reserved when the first network device performs pre-scheduling. New data; or,
  • the second network device uses the idle HARQ process of the coordinated cell to the first terminal device according to the reserved transmission resource when the first network device performs pre-scheduling. Newly transmitted data, the idle HARQ process is different from the first HARQ process.
  • the codeword that needs to be retransmitted is retransmitted in the primary serving cell, that is, the first network device still uses the first HARQ process in the new transmission to transmit the wrong code. Word to guarantee retransmission of HARQ combining gain.
  • the coordinated cell newly transmits data according to the resources reserved by the pre-scheduling, and still uses the same first HARQ process to transmit new data. If both codewords are transmitted with errors, the two codewords that are retransmitted are single-cell retransmission in the primary serving cell, that is, the first network device still uses the same first HARQ process to ensure retransmission of the HARQ combining gain.
  • the coordinated cell transmits new data according to the pre-scheduled reserved resources, and uses another idle HARQ process under the PDCCH, so that the resource utilization of the HARQ process can be improved.
  • the second network device configures the number of HARQ processes for the coordinated cell according to the loopback time of the coordinated cell and the feedback delay of the coordinated cell, including:
  • the second network device classifies the HARQ process of the coordinated cell according to different codewords, and determines a mapping relationship between the codeword and the HARQ process.
  • the second network device may determine the minimum loopback time of the two cells according to the loopback time of the primary serving cell and the loopback time of the coordinated cell, and determine the number of HARQ processes of the coordinated cell according to the minimum loopback time.
  • the second network device classifies the HARQ processes of the coordinated cells according to different codewords, so that different codewords correspond to different HARQ processes. For example, the number of HARQ processes of the coordinated cell is 12, which is HARQId0-12 respectively. If there are two codewords, respectively: codeword 0 and codeword 1, where the HARQ process corresponding to codeword 0 can be HARQId0. -3, the HARQ process corresponding to codeword 1 may be HARQId4-11.
  • the HARQ process of the coordinated cell is split according to two codewords, and the total number of HARQ processes is 12. It should be noted that, in the foregoing embodiment, the HARQ process of the coordinated cell is classified according to different codewords. Similarly, the HARQ process of the coordinated cell may be classified according to the TB, where the codeword and the transport block correspond one-to-one.
  • the codeword is a concept in the physical layer
  • the transport block is a concept in the MAC layer.
  • the HARQ process is defined by codewords or TBs in the embodiments of the present application, and different HARQ process ranges are divided according to the actual minimum RTT capability on the two cells, that is, each codeword is assigned a different HARQId range, which is beneficial to
  • the sharing of HARQ process resources when transmitting on two cells ensures the HARQ process resources while ensuring the HARQ combining gain of the joint transmission users.
  • the second network device may send the user information of the first terminal device in the coordinated cell to the first network device, where the second network device indicates the first terminal from the reserved scheduling resource.
  • the device allocates the first scheduling resource
  • the second network device may determine the first scheduling resource allocated by the first network device to the first terminal device
  • the second network device uses the loopback time of the coordinated cell and the feedback delay of the coordinated cell as the coordinated cell.
  • Configure the number of HARQ processes The second network device can configure the number of corresponding HARQ processes according to the loopback time and the feedback delay that the user actually transmits in different cells to ensure the HARQ combining gain of the user.
  • FIG. 4 is a schematic diagram of a scenario of an IPRAN coordinated multipoint (CoMP) distributed scheduling according to an embodiment of the present application.
  • IPRAN CoMP IP Radio Network
  • the eNB0 has three cells, which are the cell 0, the cell 1 and the cell 2.
  • the cell can also be represented as a transmission point (TP), and three cells are deployed on the eNB1, which are respectively a cell 3.
  • the IPRAN delay between cell 4 and cell 5, eNB0 and eNB1 is 2 milliseconds (ms) to 5 milliseconds.
  • UE0, UE1, and UE11 are inter-station joint scheduling users
  • UE2, UE4, UE6, and UE10 are intra-station joint scheduling users
  • UE3, UE5, UE7, UE8, and UE9 are single-cell users.
  • the embodiment of the present application can implement the HARQ scheduling mechanism according to the minimum loopback time of the actual user in the IPRAN scenario, and solve the problem that the user cannot obtain continuous scheduling and lose the HARQ retransmission combining gain in the IPRAN scenario in the prior art.
  • Embodiments can improve the edge user experience rate and ensure the consistency of the mobile user experience.
  • the primary serving cell and the coordinated cell simultaneously send the same or different useful data to the CoMP user for JT transmission, and the base station side has different HARQ ACK feedback delays according to different cells, and whether the pre-scheduling reserves HARQ Id and the PDCCH.
  • the number of HARQ processes and the number of HARQ processes are different.
  • the number of HARQ processes is sufficient, and the HARQ RTT is as small as possible to ensure that the user retransmits the HARQ combining gain and reduces the transmission delay of the air interface service.
  • the embodiment of the present application can be applied to a 5G communication system.
  • the embodiments of the present application can be applied to a Frequency Division Dual (FDD) or Time Division Duplexing (TDD) architecture system.
  • the network device in the embodiment of the present application may include a first network device that deploys a primary serving cell and a second network device that deploys a coordinated cell.
  • the network device may be a base station, and the base station may include: a physical layer (PHY), a media access control (MAC) layer, and a Packet Data Convergence Protocol (PDCP) layer.
  • PHY physical layer
  • MAC media access control
  • PDCP Packet Data Convergence Protocol
  • the control algorithm of the CoMP user selection and scheduling is implemented in the MAC layer of the base station side, and the power allocation, the weight design, the Modulation and Coding Scheme (MCS) adjustment, and the like are implemented at the physical layer on the base station side.
  • the PDCP layer implements Internet Protocol (IP) header compression, control plane encryption, and integrity protection of transmitted data.
  • IP Internet Protocol
  • the premise and scheduling criteria of the IPRAN distributed scheduling in the embodiment of the present application are exemplified from the network device side: when the terminal device performs NC-JT transmission, data is separately transmitted on the two TPs, so that two TPs are used.
  • the RB resource alignment performance is optimal. Therefore, in this embodiment, the RB resource alignment on the two TPs is used as a scheduling premise.
  • the RB resource alignment means that the RB frequency resources transmitted on the two TPs are all the same, and the same RBId is used.
  • each TP can independently transmit different data.
  • the uplink HARQ ACK feedback needs to adopt one uplink control information (UCI) because the uplink coverage is limited.
  • UCI uplink control information
  • a scheduling scheme under two PDCCHs and one PDCCH under one UCI is exemplified.
  • a scheduling scheme under one PDCCH and one UCI is taken as an example for description.
  • the JT type transmission may include Co-JT or NC-JT.
  • the RB resources on the two TPs are to be aligned and sent. Therefore, it is necessary to reserve the RBId transmitted by the JT on the two TPs when the real scheduling is scheduled by the pre-scheduling.
  • distributed scheduling is uniformly adopted from the architecture. To prevent resource conflicts, it is required to limit the serving cell to be a coordinated cell at the same time.
  • the scheduling entity may be in the primary serving cell or in the coordinated cell, for example, the foregoing FIG. A distributed scenario.
  • JT class transmissions are mainly divided into two categories, namely:
  • Type1 scheduling (referred to as retransmission priority): In the pre-scheduling, only the RBId is reserved for the new JT user of the station, and the HarqId is not reserved.
  • the scheduling priority order of TP0 real scheduling is: inter-station JT user pre-scheduled retransmission > inter-station JT user pre-scheduled new transmission > current TTI retransmission user > current TTI new transmission user, where > indicates greater than.
  • Type 2 scheduling (referred to as pre-scheduling priority): Pre-scheduling not only reserves the RBId for the new JT users, but also reserves the HarqId.
  • the scheduling priority order of TP0 real scheduling is: inter-station JT user pre-scheduled retransmission > inter-station JT user pre-scheduled new transmission > current TTI retransmission user > current TTI new transmission user.
  • the primary serving cell performs pre-scheduling.
  • the primary serving cell TP0 receives information such as the user CSI, the RLC buffer, and the scheduling priority of the user in the coordinated cell TP1. Then, the primary serving cell TP0 serves as a scheduling entity.
  • the base station deploying the primary serving cell can be used as a centralized controller to perform centralized scheduling in the range of TP0 and TP1.
  • the inter-station JT retransmission user is used as a new transmission user to participate in the scheduling. If the inter-site JT user does not have new transmission data, the single cell transmission is performed at TP0. In the following embodiment, the single cell transmission is simply referred to as SU, first for retransmission.
  • the user After the user allocates resources, it allocates resources for the new users and determines the transmission mode of the JT users between the stations. If it is SU, it transmits in the TP0SU, and selects the RB allocation information of the JT users that determine the JT transmission from the scheduling result.
  • the pre-scheduled useful information as shown in FIG. 5-a, the inter-station JT user is allocated pre-scheduled RB resources.
  • the left arrow in FIG. 5-a refers to the UEId0 of the inter-station JT, and the pre-scheduled RBId.
  • the area, the right arrow refers to the UEId1 of the inter-station JT, and the pre-scheduled RBId area.
  • the types of users participating in the scheduling may include: an inter-station JT, a current TTI retransmission (for example, a single-cell SU or an in-station JT), and a current TTI new transmission (for example, a single-cell SU or an in-station JT), which mainly includes the following two processes:
  • the reserved RB resources are allocated for the inter-station JT users.
  • the following scheduling priority order exists: pre-scheduling new transmission
  • Pre-scheduled retransmission that is, if there is an idle HARQId, the JT transmission is performed for the pre-scheduled new transmission, otherwise the single-cell transmission is performed for the pre-scheduled retransmission, and the pre-scheduled retransmission will result in waste of resources pre-allocated by the coordinated cell and cause interference. .
  • NC-JT non-coherent JT
  • scheduling priority order pre-scheduled retransmission > pre-scheduled new transmission
  • the remaining RB resources refer to the RB resources remaining after the allocation in step 1.
  • the scheduling priority sequence is as follows: current TTI retransmission (single cell SU or intra-station JT) > current TTI new transmission (single cell SU or intra-station JT).
  • the types of users participating in the scheduling may include: a current TTI retransmission (for example, a single-cell SU or an intra-station JT) user, and a current TTI new transmission (for example, a single-cell SU or an in-site JT) user, which mainly includes the following two processes:
  • the remaining RB resources are allocated for the current TTI retransmission and the new transmission user.
  • the scheduling priority is as follows: current TTI retransmission (single cell SU or intra-station JT) > current TTI new transmission (single cell SU or intra-station JT).
  • the new data of the pre-scheduled JT user of the station is transmitted on the RBId reserved for the inter-station JT user, that is, the RBId of the area indicated by the arrow in FIG. 5-a.
  • the primary serving cell performs pre-scheduling.
  • the primary serving cell TP0 receives the user CSI, RLC buffer, and Priority in the coordinated cell TP1.
  • the main serving cell TP0 acts as the scheduling subject, and performs centralized scheduling in the range of TP0 and TP1.
  • non-inter-station JT users are used as new-transmission users to participate in scheduling.
  • Non-inter-site JT users refer to JT users and single-cell users in the station. .
  • pre-scheduling resources are first allocated for retransmission users, and then resources are allocated for new users. Determining the transmission mode of the inter-station JT user.
  • the primary serving cell performs real scheduling.
  • the types of users participating in the scheduling are: inter-station JT users, current TTI retransmission (single-cell SU or intra-station JT) users, and current TTI new transmission (single-cell SU or intra-site JT) users, which mainly include the following two processes:
  • the scheduling priority is as follows: the current TTI retransmission (single cell SU or intra-station JT) user> current TTI new transmission (single cell SU or intra-station JT) user.
  • Types of users participating in the scheduling current TTI retransmission (single-cell SU or intra-station JT) users, current TTI new transmission (single-cell SU or intra-station JT) users, mainly including the following scheduling process:
  • the current TTI retransmission and the new transmission are performed in a centralized scheduling manner. Allocate the remaining RB resources.
  • the scheduling priority is as follows: current TTI retransmission (single cell SU or intra-station JT) user> new transmission (single cell SU or intra-station JT) user.
  • the overall scheduling process of the IPRAN distributed scheduling is illustrated. As shown in FIG. 6, the overall scheduling scheme of the IPRAN distributed scheduling is provided. The pre-scheduling is performed in the primary serving cell, and the scheduling process is described as follows:
  • Preparation before scheduling including CoMP user decision, CoMP cooperative set selection, and CSI measurement configuration.
  • the serving cell After the user accesses the serving cell TP0, the serving cell determines whether it is a JT user according to the reported RSRP of each cell, and determines a CoMP cooperation set for the JT user, that is, determines the coordinated cell TP1, and the fixed cooperative set size in the JT scenario is 2, the collaboration set. 2 means one primary serving cell and one coordinated cell.
  • the CSI report setting (Report Setting) is configured for the NC-JT user through RRC signaling or DCI indication, where the JT users include intra-station and inter-station.
  • TP0 is a CSI measurement resource configured by the NC-JT user. It needs to support users to dynamically switch between different transmission modes.
  • TP0 needs to transmit the UeId of the JT user and the Sounding Reference Signal (SRS) configuration to TP1, and TP1 transmits the measured channel information of the UE to TP1 to TP0, unified in TP0 is used for CSI measurement.
  • SRS Sounding Reference Signal
  • the coordinated cell TP1 initiates a cooperation application, and sends the CSI information (P) of the user in the TP1 required for pre-scheduling to the serving cell TP0.
  • the coordinated cell TP1 Since the pre-scheduling is performed in the primary serving cell TP0, the coordinated cell TP1 sends the CSI information of all users in the cell to TP0.
  • the baseline is a single-cell SU scheduling, and the baseline is a comparison object of CoMP.
  • the primary serving cell TP0 performs pre-scheduling, including inter-station JT user transmission mode decision, inter-station JT user RB resource reservation and CQI or PMI or RI determination, and sends these pre-scheduling information to the collaboration.
  • the scheduling information and criteria based on TP0 pre-scheduling are:
  • the base station can configure the CSI measurement resources in multiple transmission modes of the UE, and support the UE to compare the SINR and the spectrum efficiency under various assumed transmission modes, and transmit the recommended transmission mode and the corresponding CSI information to the TP0, if
  • TP0 may convert the SINR under different transmission rights according to the channel information of the UE to the two TPs and the CQI information fed back by the UE under the transmission diversity, and determine the RANK, the transmission right, and the CQI.
  • the primary serving cell TP0 and the coordinated cell TP1 independently perform real scheduling, and the two TPs perform downlink transmission together.
  • the main service cell TP0 real scheduling should consider the user types: pre-scheduling station NC-JT retransmission user, pre-scheduling station NC-JT new transmission user, inter-station NC-JT retransmission user, current retransmission user, current New users.
  • the current retransmission user includes an intra-NC-JT retransmission user and a single-cell SU retransmission user;
  • the types of users to be considered in addition to the RBId reserved for the JT in the real scheduling of the coordinated cell TP1 are: the current retransmission user and the current new transmission user.
  • the current retransmission user includes an intra-NC-JT retransmission user and a single-cell SU retransmission user;
  • FIG. 7 is a schematic diagram of a scheduling process of IPRAN CoMP distributed scheduling provided by an embodiment of the present application. Next, the algorithm functions of the IPRAN distributed scheduling are described in detail. Different CoMP transmission technologies can share the following algorithm modules, and their respective functions are:
  • CoMP transmission preparation The cooperative set of the CoMP user and the CoMP user is determined according to the RSRP information of each cell reported by the user, and for the distributed scheduling, the collaborative cluster can also be determined.
  • the CSI measurement resource and the reporting mode are configured for the CoMP user. If it is a TDD scenario, the primary serving cell informs the coordinated cell of the Coe user's UeId, and allows the coordinated cell to measure the CSI through the SRS.
  • CSI measurement Maintenance assumes CSI measurements under different transmission modes (SU or NC-JT or Co-JT).
  • the next loop link adaptation (Olla) adjustment amount is updated according to the HARQ ACK or NACK feedback of the terminal.
  • CoMP pre-scheduling Determining the transmission mode of the inter-site CoMP user, reserving the RB resource for the inter-site CoMP user, and determining the channel quality indicator (CQI) information, the precoding matrix indicator (PMI) information, and the rank indication (Rank) Indication, RI) information.
  • CQI channel quality indicator
  • PMI precoding matrix indicator
  • Rank rank indication
  • CoMP real scheduling According to different priority scheduling criteria, resources are allocated for pre-scheduling station NC-JT retransmission, pre-scheduling station NC-JT new transmission, inter-station NC-JT retransmission, current retransmission, current new transmission, and determining CQI or PMI or RI information.
  • the different scheduling schemes are described in detail below according to different CoMP transmission modes and premise constraints.
  • a plurality of scheduling schemes are illustrated. For convenience of description, they are respectively represented as a HARQ scheduling scheme 1, a HARQ scheduling scheme 2, a HARQ scheduling scheme 3, a HARQ scheduling scheme 4, an RAQ scheduling scheme 5, and a HARQ scheduling scheme 6.
  • FIG. 8 is a schematic diagram of interaction between a base station and a UE in an IPRAN HARQ scheduling scenario according to an embodiment of the present application.
  • TPO represents a primary serving cell
  • TP1 represents a coordinated cell
  • two cells may jointly send to a UE.
  • TP0 uses Physical Downlink Shared Channel (PDSCH) 1 to transmit data
  • TP1 uses PDSCH2 to transmit data.
  • the TP0 uses two Physical Downlink Control Channels (PDCCHs) to transmit control information
  • the UE may use a Physical Uplink Shared Channel (PUSCH) or a Physical Uplink Control Channel (PUCCH) to the TP0.
  • the uplink data is transmitted, for example, by transmitting HARQ ACK or CSI through the PUCCH.
  • FIG. 9 is a schematic diagram of allocating a HARQ process in a primary serving cell and a coordinated cell according to an embodiment of the present disclosure.
  • TP0 and TP1 respectively use one PDCCH, and TP0 receives feedback from the NC-JT user through one UCI.
  • HARQ scheduling schemes is given:
  • the HARQ scheduling scheme 1 mainly includes:
  • Scheduling criteria type1 scheduling, pre-scheduling only reserves RB resources for inter-site JT new users.
  • the JT retransmission data between stations is uploaded on the same TP where the new transmission is located.
  • Each TP can configure different number of HARQ processes according to different timings of data transmission and uplink feedback, so as to avoid the problem that the number of HARQ processes in the LTE scenario is insufficient.
  • TP0 can use the same number of HARQ processes as LTE 8;
  • TP1 has an IPRAN delay delay due to ACK feedback to TP1. Therefore, the number of processes needs to be 10, and the IPRAN delay is 2ms.
  • the number of different HARQ processes is configured according to PDCCH or by TP.
  • the HARQ scheduling scheme 2 is exemplified.
  • the TP0 uses two PDCCHs, and the TP0 receives the feedback of the NC-JT user through one UCI.
  • Scheduling criteria type1 scheduling, pre-scheduling only reserves RB resources for inter-site JT new users.
  • the inter-station JT retransmission data is always transmitted in the primary serving cell TP0 in order to minimize the RTT delay.
  • the scheduling information of the two TPs is on the same control information PDCCH1;
  • the retransmission codeword is transmitted at TP0, and the HarqId is unchanged, ensuring the HARQ combining gain of the retransmission.
  • the coordinated cell TP1 transmits new data according to the resources reserved by the pre-scheduling, and still uses the HarqId under the same PDCCH.
  • the coordinated cell TP1 transmits new data according to resources reserved by the pre-scheduling, and uses an idle HARQ process under another PDCCH.
  • the TP0 transmission indicates that one of the code words is transmitted at TP0 when the NC-JT is transmitted.
  • TP0 single cell transmission means to fall back to single cell transmission mode, and does not perform NC-JT transmission.
  • the NC-JT transmits two codewords and retransmits back to the single cell transmission, and even if the single cell does not satisfy the Rank>4, the two codewords can still be transmitted.
  • the number of streams transmitted in space when data is transmitted in the form of space division multiplexing. It should be noted that when the NC-JT is transmitted, one TP two codewords are retransmitted, and the other single codewords are newly transmitted. In this transmission scenario, the number of air-division multiplexed streams will be more, which exceeds the capability of the terminal. At this time, the amount of data of the same TB size is transmitted, and only the MCS or the size of the physical resource block can be increased.
  • TP0 uses two PDCCHs, and TP0 receives feedback from the NC-JT user through one UCI.
  • Scheduling criteria type1 scheduling, pre-scheduling only reserves RB resources for inter-site JT new users.
  • the inter-station JT retransmission data is always transmitted in the primary serving cell TP0 in order to minimize the RTT delay.
  • the scheduling information of the two TPs is on the same control information PDCCH1;
  • the retransmission codeword is transmitted at TP0, and the HarqId is unchanged, and the HARQ combining gain of the retransmission is guaranteed.
  • the coordinated cell TP1 transmits new data according to the resources reserved by the pre-scheduling, and still uses the HarqId under the same PDCCH.
  • NC-JT transmission if the two codewords are all wrong, in order to avoid the problem that the TB is still incomplete after the delay of the HARQ scheduling scheme 2, the retransmission of the two codewords is transmitted in the TP0 single cell, and the HarqId is unchanged, but Only one of the codewords is transmitted, and the delayed transmitted codeword is still transmitted by the same HARQId next time, ensuring retransmission of the HARQ combining gain.
  • the coordinated cell TP1 transmits new data according to resources reserved by the pre-scheduling, and uses an idle HARQ process under another PDCCH.
  • FIG. 12 is a schematic diagram of interaction between a base station and a UE in another IPRAN HARQ scheduling scenario according to an embodiment of the present application.
  • FIG. 13 is a schematic diagram of allocating a HARQ process in pre-scheduling and real scheduling according to an embodiment of the present disclosure.
  • the HARQ scheduling scheme 4 is illustrated as an example.
  • TP0 uses one PDCCH, and TP0 receives feedback from the NC-JT user through one UCI.
  • sub-schemes 1 There are three sub-schemes in the HARQ scheduling scheme. It is assumed that under the LTE HARQ mechanism, the scheduling criteria include: sub-scheme 1, 2 adopts type1 scheduling, and pre-scheduling only reserves RB resources for inter-site JT new-transmission users. Sub-scheme 3 uses type2 scheduling, pre-scheduling JT retransmission and new transmission, and reserves HARQId and RBId.
  • the codeword on one of the TPs is wrong, the codeword is retransmitted at TP0, and TP1 transmits the newly transmitted data according to the reserved RB;
  • TP0 retransmits one of the codewords
  • TP1 transmits new data according to the reserved RB, delays the retransmitted codeword as a new transmission for NC-JT pre-scheduling, reduces one codeword transmission delay, and another codeword loses HARQ combining gain.
  • the number of HARQ processes is enough.
  • TP0 retransmits one of the codewords
  • TP1 transmits new data according to the reserved RB
  • the delayed retransmitted codeword is used as the new transmission SU in TP0 for normal scheduling, reducing the transmission delay of two codewords, and the other codeword loses the HARQ combining gain.
  • the number of HARQ processes is enough.
  • the HARQ scheduling scheme 5 is exemplified.
  • the TP0 adopts one PDCCH, and the TP0 receives feedback from the NC-JT user or the Co-JT user through one UCI.
  • Scheduling criteria use type2 scheduling, pre-schedule JT retransmission and new transmission, and reserve HARQId and RBId.
  • the detailed scheduling scheme is the same as the type2 scheduling criterion.
  • the HARQ combining gain is guaranteed, but the HARQ RTT is elongated.
  • TP0 uses one PDCCH, and TP0 receives feedback from the NC-JT user through one UCI.
  • Scheduling criteria type1 scheduling, pre-scheduling only reserves RB resources for inter-site JT new users.
  • the JT retransmission data between stations is uploaded in the TP of the new transmission.
  • the data transmission on the two TPs shares the number of HARQ processes in the same PDCCH, defines the HARQ Id according to the codeword or TB, and divides the number of different HARQ processes according to the actual min HARQ RTT capability on the two TPs. .
  • the number of the maximum number of HARQ processes per carrier TP is 16, and in the prior art, two TBs are shared.
  • the embodiment of the present application allocates one HARQId to each TB, and the number of equivalent maximum HARQ processes is 32.
  • codeword 0 can adopt HARQId0-3; codeword 1 can adopt HARQId4-11. After the HARQ process disconnects two TBs, the total number of HARQ processes is 12.
  • the number of HARQ processes configured according to the PDCCH or the cell according to the actual transmission loopback time of the user in different embodiments is beneficial to the JT user in the IPRAN scenario.
  • the HARQId is defined by codeword or TB, and the codeword and the TB have a mutual correspondence, but it is not a meaning. Codewords are the concept of the physical layer, and TB is the concept of the MAC layer.
  • the different HARQ process ranges are allocated, that is, each codeword is allocated a different HARQId range, which is beneficial to the sharing of the HARQ process resources when transmitting on the two TPs.
  • the JT user HARQ combines the gain and saves the HARQ process resources.
  • the overall scheduling procedure and scheme under the single and multiple PDCCHs proposed in this embodiment ensure the JT user HARQ combining gain, effectively utilize the HARQ process resources, and improve the sensing rate of the JT user, and also consider not to affect the average performance of the system. loss.
  • the network device is specifically a first network device 1600, and may include: a processing module 1601 and a sending module 1602.
  • the processing module 1601 is configured to acquire user information of the first terminal device in the coordinated cell, where the first network device is deployed with a primary serving cell, and the first terminal device is simultaneously in the primary serving cell and the coordinated cell Within the coverage area;
  • the processing module 1601 is configured to allocate, by using the user information, the first scheduling resource from the reserved scheduling resource to the first terminal device;
  • the processing module 1601 is further configured to configure a number of HARQ processes for the primary serving cell according to a loopback time of the primary serving cell;
  • the sending module 1602 is further configured to indicate, to the coordinated cell, the first scheduling resource that is allocated by the first terminal device.
  • the processing module 1601 is further configured to: after acquiring user information of the first terminal device in the coordinated cell, determine, according to the user information, a user type of the first terminal device, where The user types include: inter-station pre-scheduled retransmission users, inter-station pre-scheduled new transmission users, current retransmission users in the station, current retransmission users in a single cell, current new users in the station, and current new users in a single cell.
  • the processing module 1601 is specifically configured to determine, according to the user information, that the first terminal device adopts inter-station non-coherent joint transmission NC-JT; the first network device determines pre-scheduling The scheduling priority of the inter-station pre-scheduled retransmission user is higher than the scheduling priority of the inter-station pre-scheduled retransmission user; and the first terminal is reserved from the reserved scheduling resource according to the pre-scheduling order. The device allocates the first scheduling resource.
  • the processing module 1601 is specifically configured to: when a user type of the first terminal device is the inter-station pre-scheduled retransmission user, or when the inter-station pre-schedules a new user Allocating the first scheduling resource to the first terminal device from the reserved scheduling resource; or when the user type of the first terminal device is the current retransmission user or the current new transmission user And allocating the first scheduling resource to the first terminal device from a scheduling resource remaining after the scheduling resource is allocated to the inter-station pre-scheduled retransmission user or the inter-station pre-scheduled new transmission user.
  • the processing module 1601 is further configured to: when the number of the HARQ processes is configured for the primary serving cell according to the loopback time of the primary serving cell, when the user of the first terminal device When the type is the inter-station pre-scheduled retransmission user, or the inter-station pre-scheduled new-transmission user, the number of HARQ processes reserved for the first terminal device is 0; or, when the first terminal device When the user type is the inter-station pre-scheduled retransmission user, the first terminal device reserves a HARQ process, and when the user type of the first terminal device is the inter-station pre-scheduled retransmission user, The number of HARQ processes reserved by the first terminal device is 0.
  • the processing module 1601 is further configured to: after indicating, to the coordinated cell, the first scheduling resource that is allocated by the first terminal device, according to a predetermined scheduling priority order The first terminal device performs real scheduling.
  • the scheduling priority order includes, in order from high to low, the inter-station pre-scheduled retransmission user, the inter-station pre-scheduled new transmission user, and the current retransmission user in the station. The current new user in the station.
  • the processing module 1601 is specifically configured to: when the user type of the first terminal device is the inter-station pre-scheduled new user, pass the first HARQ of the primary serving cell The process, in conjunction with the coordinated cell, sends inter-station pre-scheduled new transmission data to the first terminal device.
  • the processing module 1601 is specifically configured to: when the one of the inter-station pre-scheduled new transmission data has a transmission error, pass the first HARQ process, and cooperate with the The cell jointly retransmits the one codeword with the transmission error to the first terminal device; or, when there is a transmission error in two codewords in the pre-scheduled new transmission data between the stations, through a single location
  • the first HARQ process of the primary serving cell retransmits the two codewords with the transmission error to the first terminal device.
  • the processing module 1601 is specifically configured to pass through a single primary serving cell when there are transmission errors in two codewords in the inter-station pre-scheduled new transmission data. Transmitting, by the first HARQ process, one of the codewords with the transmission error to the first terminal device; and deferring to the first terminal device by using the single first HARQ process of the primary serving cell Retransmitting another codeword having a transmission error; or transmitting, by the pre-scheduling of the primary serving cell and the coordinated cell, another codeword having a transmission error; or, through a single location The primary serving cell newly transmits another codeword with a transmission error.
  • the processing module 1601 is specifically configured to pass the primary serving cell and the collaboration when there are transmission errors in two codewords in the inter-station pre-scheduled new transmission data.
  • the pre-scheduling of the cell joint transmits the two codewords with the transmission error.
  • the processing module 1601 is specifically configured to determine, according to a loopback time of the primary serving cell and a loopback time of the coordinated cell, a number of HARQ processes of the primary serving cell;
  • the HARQ process of the primary serving cell is classified according to different codewords, and the mapping relationship between the codeword and the HARQ process is determined.
  • the foregoing description of the present application shows that the first terminal device is in the coverage of the primary serving cell and the coordinated cell, and the primary network device is deployed on the first network device, and the first network device can obtain the coordinated
  • the first network device allocates a first scheduling resource to the first terminal device from the reserved scheduling resource according to the user information of the first terminal device, where the first network device is configured according to the ring of the primary serving cell
  • the back time is configured to configure the number of the HARQ processes for the primary serving cell.
  • the first network device indicates, to the coordinated cell, the first scheduling resource allocated by the first terminal device.
  • the pre-scheduling of the first terminal device is performed in the primary serving cell, and the first network device may configure the number of corresponding HARQ processes according to the loopback time that the user actually transmits in different cells to ensure the HARQ combining gain of the user.
  • the network device is specifically a second network device 1700, and may include: a sending module 1701 and a processing module 1702, where
  • the sending module 1701 is configured to send the user information of the first terminal device in the coordinated cell to the first network device, where the coordinated cell is deployed on the second network device, where the first network device is deployed with a master a serving cell, where the first terminal device is in the coverage of the primary serving cell and the coordinated cell at the same time;
  • the processing module 1702 is configured to obtain, by the first network device, the first scheduling resource to be allocated to the first terminal device;
  • the processing module 1702 is further configured to configure the number of HARQ processes for the coordinated cell according to a loopback time of the coordinated cell and a feedback delay of the coordinated cell.
  • the processing module 1702 is further configured to: after configuring a number of HARQ processes for the coordinated cell according to a loopback time of the coordinated cell and a feedback delay of the coordinated cell, The first HARQ process of the coordinated cell, in conjunction with the primary serving cell, sends inter-station pre-scheduled new transmission data to the first terminal device.
  • the processing module 1702 is further configured to: when a pre-scheduled new data in the inter-station pre-scheduled data has a transmission error, pre-schedule according to the first network device Retaining transmission resources, using the first HARQ process of the coordinated cell to newly transmit data to the first terminal device; or, when there is a transmission error in two codewords in the inter-station pre-scheduled new transmission data And performing the new transmission data to the first terminal device by using the idle HARQ process of the coordinated cell according to the transmission resource reserved by the first network device in the pre-scheduling, the idle HARQ process and the first HARQ process. Is not the same HARQ process.
  • the processing module 1702 is specifically configured to determine the collaboration according to a loopback time of the primary serving cell, a loopback time of the coordinated cell, and a feedback delay of the coordinated cell.
  • the number of HARQ processes of the cell; the HARQ process of the coordinated cell is classified according to different codewords, and the mapping relationship between the codeword and the HARQ process is determined.
  • the second network device may send the user information of the first terminal device in the coordinated cell to the first network device, where the second network device acquires the first terminal device indicated by the first network device.
  • the first scheduling resource is allocated
  • the second network device may determine the first scheduling resource allocated by the first network device to the first terminal device
  • the second network device configures the coordinated cell according to the loopback time of the coordinated cell and the feedback delay of the coordinated cell.
  • Number of HARQ processes The second network device can configure the number of corresponding HARQ processes according to the loopback time and the feedback delay that the user actually transmits in different cells to ensure the HARQ combining gain of the user.
  • the embodiment of the present application further provides a computer storage medium, wherein the computer storage medium stores a program, and the program executes some or all of the steps described in the foregoing method embodiments.
  • the first network device 1800 includes:
  • the receiver 1801, the transmitter 1802, the processor 1803, and the memory 1804 (wherein the number of the processors 1803 in the first network device 1800 may be one or more, and one processor in FIG. 18 is taken as an example).
  • the receiver 1801, the transmitter 1802, the processor 1803, and the memory 1804 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.
  • Memory 1804 can include read only memory and random access memory and provides instructions and data to processor 1803. A portion of the memory 1804 may also include a non-volatile random access memory (English name: Non-Volatile Random Access Memory, English abbreviation: NVRAM).
  • the memory 1804 stores operating systems and operational instructions, executable modules or data structures, or a subset thereof, or an extended set thereof, wherein the operational instructions can include various operational instructions for performing various operations.
  • the operating system can include a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 1803 controls the operation of the first network device, and the processor 1803 may also be referred to as a central processing unit (English name: Central Processing Unit, English abbreviation: CPU).
  • the components of the first network device are coupled together by a bus system.
  • the bus system may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • the various buses are referred to as bus systems in the figures.
  • the method disclosed in the foregoing embodiment of the present application may be applied to the processor 1803 or implemented by the processor 1803.
  • the processor 1803 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1803 or an instruction in a form of software.
  • the processor 1803 may be a general-purpose processor, a digital signal processor (English full name: digital signal processing, English abbreviation: DSP), an application specific integrated circuit (English name: Application Specific Integrated Circuit, English abbreviation: ASIC), field programmable Gate array (English name: Field-Programmable Gate Array, English abbreviation: FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in memory 1804, and processor 1803 reads the information in memory 1804 and, in conjunction with its hardware, performs the steps of the above method.
  • the receiver 1801 can be configured to receive input digital or character information, and generate signal inputs related to related settings and function control of the first network device, the transmitter 1802 can include a display device such as a display screen, and the transmitter 1802 can be used to pass through an external interface. Output numeric or character information.
  • the processor 1803 is configured to execute the scheduling method described in FIG. 2 above.
  • the second network device 1900 includes:
  • Receiver 1901, transmitter 1902, processor 1903, and memory 1904 (wherein the number of processors 1903 in the second network device 1900 may be one or more, exemplified by one processor in FIG. 19).
  • the receiver 1901, the transmitter 1902, the processor 1903, and the memory 1904 may be connected by a bus or other means, wherein the bus connection is taken as an example in FIG.
  • Memory 1904 can include read only memory and random access memory and provides instructions and data to processor 1903. A portion of the memory 1904 may also include an NVRAM.
  • the memory 1904 stores operating systems and operational instructions, executable modules or data structures, or a subset thereof, or an extended set thereof, wherein the operational instructions can include various operational instructions for implementing various operations.
  • the operating system can include a variety of system programs for implementing various basic services and handling hardware-based tasks.
  • the processor 1903 controls the operation of the second network device, which may also be referred to as a CPU.
  • the components of the second network device are coupled together by a bus system.
  • the bus system may include a power bus, a control bus, a status signal bus, and the like in addition to the data bus.
  • the various buses are referred to as bus systems in the figures.
  • the method disclosed in the foregoing embodiment of the present application may be applied to the processor 1903 or implemented by the processor 1903.
  • the processor 1903 can be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1903 or an instruction in a form of software.
  • the processor 1903 described above may be a general purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component.
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • the general purpose processor may be a microprocessor or the processor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in memory 1904, and processor 1903 reads the information in memory 1904 and, in conjunction with its hardware, performs the steps of the above method.
  • the processor 1903 is configured to execute the scheduling method described in FIG. 3 above.
  • the chip when the network device is a chip in the terminal, the chip includes: a processing unit and a communication unit, and the processing unit may be, for example, a processor, and the communication unit may be, for example, an input or output interface, Pin or circuit, etc.
  • the processing unit may execute computer execution instructions stored by the storage unit to cause the chip within the terminal to perform the wireless communication method of any of the above aspects.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc., and the storage unit may also be a storage unit located outside the chip in the terminal, such as a read-only memory (read) -only memory, ROM) or other types of static storage devices, random access memory (RAM), etc. that can store static information and instructions.
  • the processor mentioned in any of the above may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the integrated circuit of the program execution of the first aspect wireless communication method may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more for controlling the above.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • the device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be Physical units can be located in one place or distributed to multiple network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
  • the connection relationship between the modules indicates that there is a communication connection between them, and specifically may be implemented as one or more communication buses or signal lines.
  • U disk mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk, etc., including a number of instructions to make a computer device (may be A personal computer, server, or network device, etc.) performs the methods described in various embodiments of the present application.
  • a computer device may be A personal computer, server, or network device, etc.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • wire eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be stored by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (such as a solid state disk (SSD)).

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

Abstract

Les modes de réalisation de la présente invention concernent un dispositif de réseau et un procédé de programmation, utilisés pour réaliser une pré-programmation pour un dispositif terminal et assurer une demande de répétition automatique hybride (HARQ) combinant le gain d'un utilisateur. Les modes de réalisation de la présente invention fournissent un procédé de programmation, comprenant les étapes suivantes : un premier dispositif de réseau obtient les informations d'utilisateur d'un premier dispositif terminal dans une cellule coordonnée, une cellule de desserte primaire étant déployée pour le premier dispositif de réseau, et le premier dispositif terminal étant situé dans les plages de couverture à la fois de la cellule de desserte primaire et de la cellule coordonnée ; le premier dispositif de réseau attribue, conformément aux informations d'utilisateur, au premier dispositif terminal une première ressource de programmation parmi des ressources de programmation réservées ; le premier dispositif de réseau configure, conformément au temps de bouclage de la cellule de desserte primaire, le nombre de processus HARQ pour la cellule de desserte primaire ; et le premier dispositif de réseau indique à la cellule coordonnée la première ressource de programmation attribuée au premier dispositif terminal.
PCT/CN2019/072513 2018-02-27 2019-01-21 Dispositif de réseau et procédé de programmation WO2019165861A1 (fr)

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CN110809868B (zh) * 2019-09-19 2022-10-25 北京小米移动软件有限公司 Harq反馈传输方法及装置、通信设备及存储介质
EP4055739A4 (fr) * 2019-11-08 2023-03-08 JRD Communication (Shenzhen) Ltd Appareil et procédé de traitement de rétroaction de demande automatique de répétition hybride (harq)
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