WO2016070703A1 - Procédé, dispositif et système de programmation de liaison montante - Google Patents

Procédé, dispositif et système de programmation de liaison montante Download PDF

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Publication number
WO2016070703A1
WO2016070703A1 PCT/CN2015/091947 CN2015091947W WO2016070703A1 WO 2016070703 A1 WO2016070703 A1 WO 2016070703A1 CN 2015091947 W CN2015091947 W CN 2015091947W WO 2016070703 A1 WO2016070703 A1 WO 2016070703A1
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Prior art keywords
user equipment
group
information
identifying
scheduling
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PCT/CN2015/091947
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English (en)
Chinese (zh)
Inventor
徐伟杰
潘学明
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电信科学技术研究院
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Publication of WO2016070703A1 publication Critical patent/WO2016070703A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling

Definitions

  • the present invention relates to the field of wireless communications technologies, and in particular, to an uplink scheduling method, apparatus, and system.
  • LTE Long Term Evolution
  • U-LTE or LTE-U Unlicensed LTE is deployed on unlicensed spectrum resources to improve user experience and extend coverage.
  • the unlicensed spectrum does not have a specific application system, and can be shared by various wireless communication systems such as Bluetooth, WiFi, etc., and the shared unlicensed spectrum resources are used by multiple systems by preempting resources.
  • the 3rd Generation Partnership Project (3GPP) requires the fair coexistence of LTE-U and wireless communication systems such as WiFi.
  • the carrier of the unlicensed band (hereinafter referred to as the unlicensed carrier) is used as the secondary carrier to be assisted by the primary carrier of the licensed band.
  • Listening to Talk (LBT) as the basic means of LTE-U competition access, has been approved by almost all companies.
  • the WiFi system uses the LBT technology to preempt the resources on the unlicensed spectrum as follows: First, the channel is monitored.
  • the channel idle time reaches the distributed inter-frame space (DIFS)
  • DIFS distributed inter-frame space
  • the current channel is determined to be an idle channel. Then each station waiting to access the current channel enters a random backoff phase to prevent multiple sites from colliding on the same resources.
  • each site cannot occupy spectrum resources for a long time. When a certain time or data transmission limit is reached, resources need to be released for other devices/systems to seize resources.
  • the base station and the user equipment (User Equipment, UE) of the LTE system also need to use the LBT mechanism to compete for resources in order to ensure that the spectrum resources are shared with other devices or systems.
  • the UE may perform the uplink data transmission after the uplink scheduling authorization is performed, and the uplink data transmission may be performed after the contending of the unlicensed carrier. Therefore, the following problems may occur:
  • the physical downlink control channel (PDCCH) of the uplink grant grant (UL grant; UL, Uplink) has a certain timing relationship with the physical uplink data channel (PUSCH), UL.
  • WIFI non-authorized systems
  • the uplink subframes of the uplink users scheduled by the base station may not be able to compete for resources in the uplink subframes, but may not be able to transmit data in the uplink subframes.
  • other UEs that are not scheduled by the local cell may compete for resources. (For example, there are no other UEs or other unauthorized devices competing for resources around it), but the uplink scheduling has not been obtained before, resulting in waste of this uplink subframe.
  • An object of the present invention is to provide an uplink scheduling method, apparatus, and system, which solve the problem of inefficient uplink scheduling in an unlicensed frequency band under the existing LTE mechanism.
  • An uplink scheduling method includes:
  • the PDCCHs scrambled by the group identity information of the UE group in which the UE is located are respectively sent to the UEs in the UE groups, and the PDCCH carries the scheduling information.
  • the group identification information is a Cell-Radio Network Tempory Identity (C-RNTI).
  • C-RNTI Cell-Radio Network Tempory Identity
  • the method further includes:
  • the PUSCH is received on the subframe corresponding to the PDCCH that is scrambled by the group identification information, and the UE that transmits the PUSCH is determined.
  • receiving the PUSCH on the subframe corresponding to the PDCCH that is scrambled by the group identification information includes:
  • the scrambling code initialized with the group identification information descrambles the PUSCH on the subframe corresponding to the PDCCH scrambled by the group identification information.
  • the method further includes: after the UE to be scheduled is grouped, before the UE sends the PUSCH in the subframe corresponding to the PDCCH that is scrambled by the group identifier information of the UE group in which the UE is located, the method further includes:
  • the UEs in the respective UE groups are respectively allocated parameters for identifying the UEs in the UE group, and the UEs in the respective UE groups are sent parameters for identifying the UEs in the UE group.
  • the parameter for identifying the UE in the UE group includes: a parameter for determining a cyclic offset of the uplink demodulation pilot; or the parameter for identifying the UE in the UE group includes: The value of the UE is identified within the UE group.
  • the uplink demodulation pilot can be received and blindly detected, and the UE that sends the PUSCH is determined according to the blind detection result, where the information identifying the UE can be obtained from the uplink demodulation pilot.
  • the cyclic offset of the uplink demodulation pilot can be obtained, and then the parameter for determining the cyclic offset of the uplink demodulation pilot is obtained according to the cyclic offset, and the search is performed.
  • the UE corresponding to the parameter is the UE that sends the PUSCH.
  • the uplink channel carrying the value for identifying the UE in the UE group may also be received, and the sender UE of the received PUSCH is determined according to the value used to identify the UE in the UE group, where the uplink channel is the identifier of the UE. information. For example, after receiving the uplink channel, the UE may be used to obtain a value for identifying the UE in the UE group, and the UE corresponding to the value may be searched for, that is, the UE that sends the PUSCH.
  • the uplink channel carrying the value for identifying the UE within the UE group may be a Physical Uplink Control Channel (PUCCH).
  • PUCCH Physical Uplink Control Channel
  • the UEs to be scheduled are grouped, including:
  • the user equipment to be scheduled is grouped according to the reference signal received by the reference signal received by the UE to be scheduled (Reference Signal Received Power, RSRP).
  • RSRP Reference Signal Received Power
  • the method further includes:
  • Grouping UEs to be scheduled including:
  • the UEs to be scheduled are grouped.
  • the PDCCH that is scrambled by using the group identity information of the UE group in which the UE is located is sent to the UE in each UE group, including:
  • the PDCCH that is scrambled by using the group identification information of the UE group in which the UE is located is sent to the UE in each UE group by using the cross-carrier scheduling mode;
  • the PDCCH that is scrambled using the group identification information of the UE group in which the UE is located is sent to the UE in each UE group by using the carrier scheduling mode.
  • the PDCCH that is scrambled by using the group identification information of the user equipment group in the UE group is used in the cross-carrier scheduling mode.
  • the preferred implementation manner is as follows: on the carrier on the licensed frequency band, to each UE group.
  • the UE in the UE transmits a PDCCH scrambled using the group identification information of the UE group in which the UE is located, and the scheduling information carried in the PDCCH is used to schedule the PUSCH on the carrier of the unlicensed band.
  • An uplink scheduling method includes:
  • the PUSCH is sent according to the indication of the scheduling information, and information identifying the UE is sent.
  • the PUSCH is sent according to the indication of the foregoing scheduling information, including:
  • the PUSCH scrambled by the scrambling code initialized by the group identification information is transmitted according to the instruction of the scheduling information.
  • the method further includes: receiving, by the base station, the UE for identifying the UE in the UE group, before sending the PUSCH according to the indication of the foregoing scheduling information, and transmitting the information identifying the UE. parameter;
  • Sending information identifying the UE includes: generating and transmitting information identifying the UE according to the foregoing parameter for identifying the UE in the UE group.
  • the foregoing parameter for identifying the UE in the UE group may include: a parameter used to determine a cyclic offset of the uplink demodulation pilot.
  • generating, according to the parameter for identifying the UE in the UE group, generating and transmitting the information identifying the UE includes: generating an uplink demodulation pilot according to a parameter used to determine a cyclic offset of the uplink demodulation pilot And send.
  • the foregoing parameter for identifying the UE in the UE group may also include: a value for identifying the UE in the UE group.
  • generating and transmitting the information identifying the UE including: sending an uplink channel (PUCCH), where the uplink channel carries a value for identifying the UE in the UE group .
  • PUCCH uplink channel
  • the uplink channel is a PUCCH.
  • An uplink scheduling method includes:
  • the base station groups the UEs to be scheduled
  • the base station allocates group identification information for each UE group, and sends the group identification information allocated to the UE group in each UE group to the UE group.
  • the UE to be scheduled receives the group identification information allocated by the base station;
  • the eNB transmits a PDCCH that is scrambled by the group identity information of the UE group in which the UE is located, and the PDCCH carries the scheduling information.
  • the UE to be scheduled receives a PDCCH sent by the base station and scrambled by using the group identification information;
  • the UE to be scheduled After competing for the resource, the UE to be scheduled sends a PUSCH according to the indication of the scheduling information, and sends information identifying the UE.
  • the method further includes: the base station separately assigning, to the user equipment in each user equipment group, a parameter for identifying the user equipment in the user equipment group, and transmitting, to the user equipment in each user equipment group, the user equipment for the user equipment group Device group ID User equipment parameters;
  • the method further includes: the user equipment to be scheduled receives the information sent by the base station
  • the information of the user equipment is identified in the user equipment group.
  • the information about the user equipment is sent, and the information for identifying the user equipment is generated and sent according to the parameter used to identify the user equipment in the user equipment group.
  • the embodiment of the present invention further provides an uplink scheduling apparatus, including:
  • a user equipment grouping module configured to group user equipments to be scheduled
  • the group identification information configuration module is configured to respectively allocate group identification information for each user equipment group, and send group identification information allocated to the user equipment group of each user equipment group to the user equipment group;
  • the uplink scheduling module is configured to send, to the user equipment in each user equipment group, a physical downlink control channel that is scrambled by using the group identity information of the user equipment group in which the user equipment group is located, where the physical downlink control channel carries scheduling information.
  • the method further includes an uplink data receiving module, configured to:
  • the uplink data receiving module when receiving the physical uplink shared channel in the subframe corresponding to the physical downlink control channel that is scrambled by the group identification information, is configured to:
  • the scrambling code initialized by the group identification information is used to descramble the physical downlink shared channel.
  • the user equipment identification parameter configuration module is further configured to: after the user equipment grouping module groups the user equipment to be scheduled, the group identification information of the user equipment group in the user equipment group Before the physical uplink shared channel is transmitted on the subframe corresponding to the physical downlink control channel that is scrambled, the user equipment in each user equipment group is allocated a parameter for identifying the user equipment in the user equipment group and is directed to each user equipment group.
  • the user equipment in the middle transmits a parameter assigned thereto for identifying the user equipment within the user equipment group.
  • the parameters for identifying the user equipment in the user equipment group include:
  • a parameter used to determine the cyclic offset of the uplink demodulation pilot is
  • the parameters for identifying the user equipment in the user equipment group include:
  • a value used to identify a user device within a group of user devices is a value used to identify a user device within a group of user devices.
  • the uplink data receiving module is configured to: when determining the user equipment that sends the physical uplink shared channel, based on the foregoing, where the user equipment is configured to:
  • the uplink data receiving module is configured to: receive and blindly detect an uplink demodulation pilot, and determine, according to a blind detection result, a user that sends the physical uplink shared channel. device.
  • the uplink data receiving module is configured to: receive an uplink channel carrying a value for identifying the user equipment in the user equipment group, according to the The value of the user equipment identified in the user equipment group determines the user equipment that transmits the physical uplink shared channel.
  • the uplink channel carrying a value for identifying the user equipment in the user equipment group is a physical uplink control channel.
  • the user equipment grouping module is configured to:
  • the user equipments to be scheduled are grouped according to the CQI fed back by the user equipment to be scheduled; or
  • the user equipments to be scheduled are grouped according to the RSRP measurement report result of the user equipment to be scheduled.
  • the method further includes a scheduling mode determining module, configured to: determine whether to perform group scheduling according to the obtained auxiliary information and/or statistical information;
  • the user equipment grouping module is configured to group the user equipments to be scheduled when the scheduling mode decision module determines to perform group scheduling.
  • the uplink scheduling module is configured to:
  • the cross-carrier scheduling mode is used to separately send the physical downlink control channel that is scrambled by the group identifier information of the user equipment group in the user equipment group;
  • the carrier downlink scheduling mode is used to send the physical downlink control channel scrambled by the group identity information of the user equipment group in the user equipment group.
  • the uplink scheduling module is used to:
  • the embodiment of the present invention further provides a base station, including:
  • a processor for reading a program in the memory performing the following process:
  • the transceiver Transmitting, by the transceiver, the PDCCHs that are scrambled by the group identity information of the UE group in which the UE is located, and the PDCCH carries the scheduling information;
  • transceiver for receiving and transmitting data under the control of a processor
  • a memory that holds the data used by the processor to perform operations.
  • the processor is further configured to read a program in the memory and perform the following process:
  • the processor is configured to read the program in the memory, and perform the following process:
  • the scrambling code initialized with the group identification information descrambles the PUSCH on the subframe corresponding to the PDCCH scrambled by the group identification information.
  • the processor is further configured to read a program in the memory, and perform the following process: after the UE to be scheduled is grouped, the UE scrambles the group identification information of the UE group in which the UE is located Before the PUSCH is transmitted in the subframe corresponding to the PDCCH, the UEs in the UE groups are respectively allocated parameters for identifying the UE in the UE group, and the UEs in the UE groups are allocated for the UEs to be identified in the UE group. The parameters of the UE.
  • the parameter for identifying the UE in the UE group includes: a parameter used to determine a cyclic offset of the uplink demodulation pilot; or the parameter used to identify the UE in the UE group includes: used in the UE The value of the UE is identified.
  • the processor is configured to read the program in the memory, and perform the following process: receiving information that identifies the user equipment sent by the user equipment, according to the identifier.
  • the information of the user equipment determines the user equipment that sends the physical uplink shared channel.
  • the processor when determining the user equipment that sends the physical uplink shared channel, is configured to read the program in the memory, and perform the following process: receiving and blindly detecting the uplink demodulation pilot, and determining to send the PUSCH according to the blind detection result.
  • the processor when determining the user equipment that sends the physical uplink shared channel, is configured to read the program in the memory, and perform the following process: receiving and blindly detecting the uplink demodulation pilot, and determining to send the PUSCH according to the blind detection result.
  • the processor is configured to read the program in the memory, and perform the following process: receiving and blindly detecting the uplink demodulation pilot, and determining to send the PUSCH according to the blind detection result.
  • the processor when determining the user equipment that sends the physical uplink shared channel, is configured to read a program in the memory, and perform the following process: receiving an uplink channel carrying a value for identifying the user equipment in the user equipment group, according to The value for identifying the user equipment in the user equipment group determines the user equipment that sends the physical uplink shared channel.
  • the uplink channel carrying a value for identifying the user equipment in the user equipment group is a physical uplink control channel.
  • the processor is configured to read a program in the memory, and perform the following process:
  • the UEs to be scheduled are grouped according to the CQI fed back by the UE to be scheduled; or
  • the UEs to be scheduled are grouped according to the RSRP measurement report result of the UE to be scheduled.
  • the processor is further configured to read a program in the memory, and perform the following process: determining whether to perform group scheduling according to the acquired auxiliary information and/or statistical information; and determining to perform group scheduling, The UEs to be scheduled are grouped.
  • the PDCCH that is scrambled by using the group identity information of the UE group in which the UE is located is sent to the UEs in each UE group by using the cross-carrier scheduling mode; or, by using the carrier scheduling mode, respectively
  • the UE in each UE group transmits a PDCCH scrambled using the group identification information of the UE group in which it is located.
  • the processor When the physical downlink control channel scrambled by the group identification information of the user equipment group in which the user equipment group is located is sent to the user equipment in each user equipment group by using the cross-carrier scheduling mode, the processor is used to read the program in the memory, and the following process is performed:
  • the embodiment of the present invention further provides an uplink scheduling apparatus, including:
  • a group identity information receiving module configured to receive group identity information sent by the base station
  • a scheduling information receiving module configured to receive a PDCCH that is sent by the base station and is scrambled by using the group identifier information, where the PDCCH carries scheduling information
  • the uplink data sending module is configured to send the PUSCH according to the indication of the scheduling information after competing for resources, and send information identifying the device.
  • the uplink data sending module is configured to:
  • the PUSCH scrambled by the scrambling code initialized by the group identification information is transmitted according to the instruction of the scheduling information.
  • the user equipment identification parameter receiving module is further configured to: before the uplink data sending module sends the PUSCH according to the indication of the scheduling information, and sends the information identifying the device, and receives the base station. Sending a parameter for identifying the UE in the UE group; when transmitting the information identifying the device, the uplink data sending module is configured to: according to the parameter used to identify the UE in the UE group, generate information for sending the identifier device send.
  • the parameter for identifying the UE in the UE group may include: a parameter for determining a cyclic offset of the uplink demodulation pilot; and generating a transmission identifier according to the parameter used to identify the UE in the UE group.
  • the uplink data sending module is configured to: generate an uplink demodulation pilot according to a parameter used to determine a cyclic offset of the uplink demodulation pilot, and send the uplink demodulation pilot.
  • the parameter for identifying the user equipment in the user equipment group may also include: a value for identifying the UE in the UE group; and generating, according to the parameter for identifying the UE in the UE group, generating the sending identifier
  • the uplink data sending module is configured to: send an uplink channel, where the uplink channel carries a value for identifying the UE in the UE group.
  • the uplink channel is a physical uplink control channel.
  • the embodiment of the present invention further provides a UE, including:
  • a processor for reading a program in the memory performing the following process:
  • the PUSCH is sent by the transceiver according to the indication of the scheduling information, and the information identifying the device is sent by the transceiver;
  • transceiver for receiving and transmitting data under the control of a processor
  • a memory that holds data used by the processor to perform operations.
  • the processor is configured to read the program in the memory, and perform the following process:
  • the PUSCH scrambled by the scrambling code initialized by the group identification information is transmitted according to the instruction of the scheduling information.
  • the processor is further configured to: read a program in the memory, and perform the following process: before the uplink data sending module sends the PUSCH according to the indication of the scheduling information, and sends the information identifying the device.
  • the processor receives, by the base station, a parameter for identifying the UE in the UE group; when transmitting the information identifying the device, the processor is configured to read the program in the memory, and perform the following process: according to the foregoing, the UE is used to identify the UE in the UE group.
  • the parameter generates and sends a message identifying the device and sends it.
  • the parameter for identifying the UE in the UE group may include: a parameter for determining a cyclic offset of the uplink demodulation pilot; and generating a transmission identifier according to the parameter used to identify the UE in the UE group.
  • the processor reads the program in the memory, and performs the following process: generating an uplink demodulation pilot and transmitting according to the parameter for determining the cyclic offset of the uplink demodulation pilot.
  • the parameter for identifying the user equipment in the user equipment group may also include: a value for identifying the UE in the UE group; and generating, according to the parameter for identifying the UE in the UE group, generating the sending identifier
  • the processor reads the program in the memory, and performs the following process: transmitting an uplink channel carrying a value for identifying the UE within the UE group.
  • the uplink channel is a physical uplink control channel.
  • the embodiment of the present invention further provides an uplink scheduling system, including a base station and a UE to be scheduled;
  • the base station is configured to: group the UEs to be scheduled; assign group identification information to each UE group, and send the group identification information allocated to the UE group in each UE group to the UEs in each UE group; a PDCCH scrambled using the group identification information of the UE group in which the UE is located, where the PDCCH carries scheduling information;
  • the UE to be scheduled is configured to: receive the group identity information sent by the base station, receive the PDCCH that is sent by the base station and use the group identity information to be scrambled; after contending for the resource, send the PUSCH according to the indication of the scheduling information, and send the identifier of the UE. Information.
  • the user equipment sends a physical uplink shared channel to the subframe corresponding to the physical downlink control channel that is scrambled by the group identifier information of the user equipment group in which the user equipment group is located. For: allocating user equipments in each user equipment group with parameters for identifying the user equipment in the user equipment group;
  • the user equipment to be scheduled sends a physical uplink shared channel according to the indication of the scheduling information, and sends an identifier.
  • the information of the user equipment is used to: receive a parameter that is sent by the base station to identify the user equipment in the user equipment group; and send information that identifies the user equipment, including: Identify the parameters of the user equipment, generate and send information identifying the user equipment and send it.
  • the base station groups the UEs to be scheduled, and sends the same PDCCH to each group of UEs, where the PDCCH carries scheduling information. That is, the base station schedules the same uplink resource for each UE in the same group. Each UE of the same group competes for the same uplink resource, and the probability of successfully competing for the uplink resource is greater than the probability that the single UE competes for the uplink resource. As long as the UE in the same group competes with the uplink resource scheduled by the base station, the PUSCH is sent on the uplink resource. Therefore, the technical solution provided by the embodiment of the present invention improves the efficiency of the uplink scheduling and the uplink resource utilization.
  • the base station allocates the UEs to be scheduled, and assigns group identification information to each UE group, that is, assigns the same identification information to each UE in the same group, instead of assigning identification information to each UE.
  • the PDCCH can be used for uplink scheduling of each UE in the same group, thereby improving downlink control efficiency and saving downlink resources.
  • FIG. 1 is a flowchart of a method performed by a base station and a UE according to an embodiment of the present invention
  • FIG. 2 is a flowchart of a method of a base station side according to an embodiment of the present invention
  • FIG. 3 is a flowchart of a UE side method according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic diagram of another apparatus according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of a UE according to an embodiment of the present invention.
  • the implementation of the cooperation between the base station side and the UE side will be described first, and then the implementation from the base station side and the UE side will be described separately, but this does not mean that the two must be implemented together.
  • the problems existing on the base station side and the UE side are also solved, but when the two are combined, a better technical effect is obtained.
  • the uplink scheduling method implemented by the base station and the UE in the embodiment of the present invention is as shown in FIG. 1 , and specifically includes the following operations:
  • Step 100 The base station groups the UEs to be scheduled.
  • the UE to be scheduled is a UE that needs to perform uplink scheduling.
  • the base station may group all UEs to be scheduled within a predetermined time period, or may Some UEs to be scheduled within a certain time period are grouped. If the UEs to be scheduled are grouped, and the UEs are specifically selected for the grouping, the present invention is not limited by the requirements of the actual application.
  • Step 110 The base station allocates group identification information for each UE group, and sends group identification information allocated to the UE group in each UE group.
  • the UEs of the same group constitute a UE group.
  • the group identification information is a C-RNTI.
  • the C-RNTI configured for the UE group is also referred to as a group C-RNTI, because the C-RNTI is configured for the UE group, and the C-RNTI is not configured for the specific UE.
  • the group identification information is not limited to the C-RNTI, but the information that can identify the UE group to distinguish different UE groups can be used as the group identification information.
  • the group identification information may also be a value, and different values are configured for different UE groups to distinguish different UE groups.
  • the group identification information allocated to the UE group in which the UE group is located is transmitted to the UEs in each UE group by radio resource control (RRC) signaling.
  • RRC radio resource control
  • Step 120 The UE to be scheduled receives the group identification information sent by the base station.
  • the UE to be scheduled refers to each UE that is grouped.
  • Step 130 The eNB sends a PDCCH that is scrambled by the group identity information of the UE group in which the UE is located, and the PDCCH carries the scheduling information.
  • the scheduling information is a UL grant.
  • Step 140 The UE to be scheduled receives the PDCCH sent by the base station and scrambled by using the group identification information.
  • Step 150 After the UE to be scheduled to compete for the resource, the UE sends a PUSCH according to the indication of the scheduling information carried in the received PDCCH, and sends information identifying the UE.
  • the base station groups the UEs to be scheduled, and sends the same PDCCH to each group of UEs, where the PDCCH carries scheduling information. That is, the base station schedules the same uplink resource for each UE in the same group. Each UE of the same group contends for the same uplink resource. In the case where devices of other unlicensed systems (such as WIFI, Bluetooth) exist, the probability that a group of UEs successfully contend for uplink resources is greater than the probability that a single UE contends for uplink resources. As long as one UE in the same group competes with the uplink resource scheduled by the base station, the PUSCH is sent on the uplink resource.
  • the PDCCH carries scheduling information. That is, the base station schedules the same uplink resource for each UE in the same group. Each UE of the same group contends for the same uplink resource. In the case where devices of other unlicensed systems (such as WIFI, Bluetooth) exist, the probability that a group of UEs successfully contend for uplink resources is greater
  • the technical solution provided by the embodiment of the present invention improves the efficiency of the uplink scheduling and the uplink transmission efficiency.
  • the base station allocates the UEs to be scheduled, and assigns group identification information to each UE group, that is, assigns the same identification information to each UE in the same group, instead of assigning identification information to each UE.
  • the PDCCH can be used for uplink scheduling of each UE in the same group, thereby improving downlink control efficiency and saving downlink resources.
  • the uplink scheduling method of the base station side provided by the embodiment of the present invention is as shown in FIG. 2, and specifically includes the following operations:
  • Step 200 Group the UEs to be scheduled.
  • Step 210 Assign group identification information to each UE group, and send the UEs in the UE groups to the UEs in the UE groups.
  • Step 220 Send a PDCCH scrambled by the group identity information of the UE group in which the UE is located, and the PDCCH carries the scheduling information.
  • UE1, UE2, UE3, and UE4 to be scheduled are divided into two UE groups, wherein UE group 1 includes UE1 and UE2, UE group 2 includes UE3 and UE4, and UE group 1 is configured with group identification information 1,
  • the group identification information 2 is configured for the UE group 2; the PDCCH 1 scrambled with the group identification information 1 is transmitted to the UE1 and the UE2 in the UE group 1, and the PDCCH 2 scrambled using the group identification information 2 is transmitted to the UE3 and the UE4 in the UE group 2.
  • the PDCCH 1 carries the scheduling information 1 and the PDCCH 2 carries the scheduling information 2.
  • the PUSCH After transmitting the PDCCH scrambled by the group identity information of the UE group in the UE group, the PUSCH may be received on the subframe corresponding to the PDCCH that is scrambled by the group identity information according to the timing relationship, and the transmission is determined to be sent. UE of the PUSCH.
  • the PUSCH is received in the subframe corresponding to the PDCCH1, and the transmitting UE of the received PUSCH is determined; and the PUSCH is received in the subframe corresponding to the PDCCH 2, and the transmitting UE of the received PUSCH is determined.
  • the timing relationship refers to a timing relationship between a PDCCH carrying a UL grant and a PUSCH indicated by the UL grant. That is, there is a certain timing relationship between the PDCCH carrying the UL grant and the PUSCH indicated by the UL grant.
  • the process of receiving the PUSCH includes performing descrambling on the PUSCH.
  • the scrambling code initialized by the group identification information is used to descramble the PUSCH in the subframe corresponding to the PDCCH scrambled by the group identification information.
  • the identification information of the UE may be an existing UE identifier, and the base station has acquired the UE identifier and saved, for example, an International Mobile Subscriber Identity (IMSI) before the uplink scheduling; correspondingly, the base station receives the PUSCH, The UE identifier associated with the PUSCH is also received, and the received UE identifier is matched with the saved UE identifier to determine which UE the received PUSCH is sent.
  • IMSI International Mobile Subscriber Identity
  • the identification information of the UE may also be in an uplink scheduling process, and the base station is configured for the UE.
  • any UE may be separately sent to the UE after the PUSCH is sent in the subframe corresponding to the PDCCH in which the group identification information of the UE group is located.
  • the UE in the middle allocates parameters for identifying the UE within the UE group, and transmits to the UEs in each UE group the parameters assigned thereto for identifying the UE within the UE group.
  • the UE is allocated parameters for identifying the UE in the UE group.
  • the parameters allocated for identifying the UE within the UE group are transmitted to the UEs in the respective UE groups through RRC signaling.
  • the parameters of the different groups of UEs for identifying the UEs in the UE group may be the same or different, which is not limited by the present invention.
  • the foregoing parameters for identifying the UE in the UE group may include: a loop for determining an uplink demodulation pilot.
  • Each UE within the same group is distinguished by assigning different parameters for determining the cyclic offset of the uplink demodulation pilot for each UE within the same group.
  • the base station pre-configures a PUSCH Demodulation Reference Signal (DMRS) sequence.
  • DMRS Demodulation Reference Signal
  • Table 1 or Table 2 is pre-configured to the UE.
  • the Cyclic Shift Field in Table 1 or Table 2 is a parameter used to determine the cyclic offset of the uplink demodulation pilot.
  • This parameter can be transmitted to the UE in RRC dedicated signaling.
  • the foregoing parameters for identifying the UE in the UE group may also include: a value for identifying the UE in the UE group.
  • Each UE within the same group is distinguished by assigning different values for each UE within the same group to identify the UE within the UE group.
  • the above value for identifying the UE within the UE group will be carried in the PUCCH, so that the base station determines the UE transmitting the PUSCH.
  • the PUCCH format 1b can carry 2-bit information, it can carry "00", "01", The four values of "10” and "11", if PUCCH format 2 is used, can carry 20 bits of information. If bit map indication is used, 20 different values can be used.
  • the base station can configure any of the above values to any UE in the group for the UE within the zone packet. It should be noted that the channel format carrying the value must be pre-agreed by the UE and the base station.
  • the method for determining the UE that sends the PUSCH may be: receiving the information of the UE that is sent by the UE, and determining the sender UE of the received PUSCH according to the information of the identifier UE.
  • the uplink demodulation pilot may be received and blindly detected, and the UE that sends the PUSCH is determined according to the blind detection result, where the information of the UE is identified. It can be obtained from the uplink demodulation pilot. Specifically, after the uplink demodulation pilot is blindly detected, the cyclic offset of the uplink demodulation pilot is obtained, and then the parameter for determining the cyclic offset of the uplink demodulation pilot is obtained according to the cyclic offset.
  • the UE corresponding to the parameter is searched according to the configuration table of the parameters of the different UEs in the base station configuration group, and the searched UE is the UE that sends the PUSCH.
  • the detection of the uplink demodulation pilot can be performed by means of correlation detection.
  • the uplink demodulation pilot r PUSCH (.) can be expressed by the following formula (1):
  • n the length of the frequency domain reference symbol
  • DMRS Demodulation Reference Signal
  • TB transport block
  • 3GPP protocol 36.211 version 11 in order to support support for uplink SU-MIMO and MU-MIMO, a new table expression is introduced in the DCI Cyclic Shift Field and The value and the value of the Orthogonal Cover Code (OCC) are demodulated.
  • an uplink channel carrying a value for identifying the UE within the UE group may be received, and the received value for identifying the UE within the UE group is determined to be received.
  • the uplink channel carrying the value for identifying the UE within the UE group may be a PUCCH.
  • the UE to be scheduled may be grouped according to the CQI fed back by the UE to be scheduled according to the method of any of the foregoing base station side methods. For example, the CQI quality is divided into a range, and the UEs whose CQI quality is in the same range are grouped into one group.
  • the user equipment to be scheduled may be grouped according to the RSRP measurement report result of the UE to be scheduled; for example, the RSRP is divided into several ranges, and the UEs whose RSRP is in the same range are grouped into one group.
  • any base station side method embodiment preferably, before the UE to be scheduled is grouped, it may further determine whether to perform group scheduling according to the acquired auxiliary information and/or statistical information; when it is determined that the group scheduling is performed, the to-be-scheduled UE grouping; when it is determined that group scheduling is not performed, uplink scheduling is performed according to the existing uplink scheduling mode.
  • the interference situation around the UE may be further determined based on the probability of receiving the PUSCH transmission after the PDCCH scheduling is sent. If the PDCCH scheduling success rate is low (for example, less than 70%), and there are multiple users waiting at the moment. Transfer data, you can start group scheduling transmission.
  • the PDCCH that is scrambled by using the group identification information of the UE group in which the UE is located may be sent to the UE in each UE group by using the cross-carrier scheduling mode; for example, the PDCCH is sent in the licensed frequency band, and the scheduled PUSCH is sent. Sent in an unlicensed band.
  • the PDCCH that is scrambled by using the group identification information of the UE group in which the UE is located may be sent to the UE in each UE group, for example, the PDCCH and the scheduled PUSCH are sent in the unlicensed frequency band.
  • the PDCCH that is scrambled by using the group identification information of the user equipment group in the UE group is used in the cross-carrier scheduling mode.
  • the preferred implementation manner is as follows: on the carrier on the licensed frequency band, to each UE group.
  • the UE in the UE transmits a PDCCH scrambled using the group identification information of the UE group in which the UE is located, and the scheduling information carried in the PDCCH is used to schedule the PUSCH on the carrier of the unlicensed band.
  • the uplink scheduling method on the base station side provided by the embodiment of the present invention is as shown in FIG. 3, and specifically includes the following operations:
  • Step 300 Receive group identification information sent by a base station.
  • Step 310 Receive a PDCCH that is sent by the base station and is scrambled by using the group identifier information, where the PDCCH carries scheduling information.
  • Step 320 After competing for resources, send a PUSCH according to the indication of the scheduling information, and send information identifying the UE.
  • the UE can compete for uplink subframe resources by using the mode before talk.
  • the PUSCH is transmitted on the subframe corresponding to the received PDCCH.
  • the PUSCH scrambled by the scrambling code initialized by the group identification information may be transmitted according to the instruction of the scheduling information.
  • the information identifying the local UE may be carried in the PUSCH, or may be through other parties. Send.
  • the parameter that is sent by the foregoing base station to identify the UE in the UE group is received. Then, according to the foregoing parameter for identifying the UE in the UE group, information for transmitting and identifying the UE is generated and sent. Preferably, the parameter identifying the UE in the UE group sent by the base station is received when receiving the group identity information of the base station.
  • UE-specific parameters may also be transmitted as information identifying the UE.
  • the foregoing parameter for identifying the UE in the UE group may include: a parameter used to determine a cyclic offset of the uplink demodulation pilot.
  • generating, according to the parameter for identifying the UE in the UE group, generating and transmitting the information identifying the UE includes: generating an uplink demodulation pilot according to a parameter used to determine a cyclic offset of the uplink demodulation pilot And send.
  • the UE determines, according to the received parameter used to determine the cyclic offset of the uplink demodulation pilot, and Table 1 or Table 2 above. Further, an uplink demodulation pilot is generated.
  • the foregoing parameter for identifying the UE in the UE group may also include: a value for identifying the UE in the UE group.
  • a PUCCH is transmitted, and the PUCCH carries a value for identifying the UE in the UE group.
  • the UE carries a value in the PUCCH for identifying the UE within the UE group.
  • the PUCCH channel may be sent on some time-frequency resources reserved when the UE sends the PUSCH channel.
  • the PUCCH format 1b can carry 2-bit information, and can carry four values of "00", "01", “10", and "11” for four UEs in the zone packet. If PUCCH format 2 is used, 20-bit information can be carried. If the bitmap indication mode is used, 20 different UEs in the group can be indicated by 20 different values.
  • the embodiment of the present invention further provides an uplink scheduling apparatus, as shown in FIG. 4, including:
  • a user equipment grouping module 401 configured to group user equipments to be scheduled
  • the group identification information configuration module 402 is configured to allocate group identification information for each user equipment group, and send group identification information allocated to the user equipment group of the user equipment group to the user equipment group;
  • the uplink scheduling module 403 is configured to send, to the user equipment in each user equipment group, a physical downlink control channel that is scrambled by using the group identifier information of the user equipment group in which the user equipment group is located, where the physical downlink control channel carries scheduling information.
  • the method further includes an uplink data receiving module, configured to:
  • the uplink data receiving module when receiving the physical uplink shared channel in the subframe corresponding to the physical downlink control channel that is scrambled by the group identification information, is configured to:
  • the scrambling code initialized by the group identification information is used to descramble the physical downlink shared channel.
  • a user equipment identification parameter configuration module configured to After the user equipment grouping module groups the user equipments to be scheduled, the user equipments respectively send the physical uplink shared channels in the subframe corresponding to the physical downlink control channel that is scrambled by the group identifier information of the user equipment group in which the user equipment group is located.
  • the user equipment in the device group allocates parameters for identifying the user equipment within the user equipment group, and transmits to the user equipment in each user equipment group a parameter assigned thereto for identifying the user equipment within the user equipment group.
  • the parameters for identifying the user equipment in the user equipment group include:
  • a parameter used to determine the cyclic offset of the uplink demodulation pilot is
  • the parameters for identifying the user equipment in the user equipment group include:
  • a value used to identify a user device within a group of user devices is a value used to identify a user device within a group of user devices.
  • the uplink data receiving module is configured to: when determining the user equipment that sends the physical uplink shared channel, based on the foregoing, where the user equipment is configured to:
  • the uplink data receiving module is configured to:
  • the uplink demodulation pilot is received and blindly detected, and the user equipment that sends the physical uplink shared channel is determined according to the blind detection result.
  • the uplink data receiving module is configured to: receive an uplink channel carrying a value for identifying the user equipment in the user equipment group, according to the The value of the user equipment identified in the user equipment group determines the user equipment that transmits the physical uplink shared channel.
  • the uplink channel carrying a value for identifying the user equipment in the user equipment group is a physical uplink control channel.
  • the user equipment grouping module is configured to:
  • the user equipments to be scheduled are grouped according to the CQI fed back by the user equipment to be scheduled; or
  • the user equipments to be scheduled are grouped according to the RSRP measurement report result of the user equipment to be scheduled.
  • the method further includes a scheduling mode determining module, configured to: determine whether to perform group scheduling according to the obtained auxiliary information and/or statistical information;
  • the user equipment grouping module is configured to group the user equipments to be scheduled when the scheduling mode decision module determines to perform group scheduling.
  • the uplink scheduling module is configured to:
  • the cross-carrier scheduling mode is used to separately send the physical downlink control channel that is scrambled by the group identifier information of the user equipment group in the user equipment group;
  • the carrier downlink scheduling mode is used to send the physical downlink control channel scrambled by the group identity information of the user equipment group in the user equipment group.
  • the cross-carrier scheduling mode is used to separately send and use the user equipment in each user equipment group.
  • the uplink scheduling module is used to:
  • the embodiment of the present invention further provides a base station, as shown in FIG. 5, including:
  • the processor 500 is configured to read a program in the memory 520 and perform the following process:
  • the transceiver 510 Transmitting, by the transceiver 510, the PDCCHs that are scrambled by the group identity information of the UE group in which the UE is located, and the PDCCH carries the scheduling information;
  • the transceiver 510 is configured to receive and transmit data under the control of the processor 500.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 500 and various circuits of memory represented by memory 520.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 510 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 can store data used by the processor 500 when performing operations.
  • the embodiment of the present invention further provides an uplink scheduling device, as shown in FIG. 6, including:
  • the group identification information receiving module 601 is configured to receive group identification information sent by the base station;
  • the scheduling information receiving module 602 is configured to receive a PDCCH that is sent by the base station and that is scrambled by using the group identifier information, where the PDCCH carries scheduling information.
  • the uplink data sending module 603 is configured to send the PUSCH according to the indication of the scheduling information after competing for the resource, and send information identifying the device.
  • the uplink data sending module is configured to:
  • the PUSCH scrambled by the scrambling code initialized by the group identification information is transmitted according to the instruction of the scheduling information.
  • the user equipment identification parameter receiving module is further configured to: before the uplink data sending module sends the PUSCH according to the indication of the scheduling information, and sends the information identifying the device, and receives the base station. Sending a parameter for identifying the UE in the UE group; when transmitting the information identifying the device, the uplink data sending module is configured to: according to the parameter used to identify the UE in the UE group, generate information for sending the identifier device send.
  • the parameter for identifying the UE in the UE group may include: a parameter for determining a cyclic offset of the uplink demodulation pilot; and generating a transmission identifier according to the parameter used to identify the UE in the UE group.
  • the uplink data sending module is configured to: generate an uplink demodulation pilot according to a parameter used to determine a cyclic offset of the uplink demodulation pilot, and send the uplink demodulation pilot.
  • the parameter for identifying the user equipment in the user equipment group may also include: a value for identifying the UE in the UE group; and generating, according to the parameter for identifying the UE in the UE group, generating the sending identifier
  • the uplink data sending module is configured to: send an uplink channel, where the uplink channel carries a value for identifying the UE in the UE group.
  • the uplink channel is a PUCCH.
  • the embodiment of the present invention further provides a UE, as shown in FIG. 7, including:
  • the processor 700 is configured to read a program in the memory 720 and perform the following process:
  • the PUSCH is sent by the transceiver 710 according to the indication of the scheduling information, and the information identifying the device is sent by the transceiver 710;
  • the transceiver 710 is configured to receive and transmit data under the control of the processor 700.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 700 and various circuits of memory represented by memory 720.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 710 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 730 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 700 is responsible for managing the bus architecture and general processing, and the memory 720 can store data used by the processor 700 in performing operations.
  • the embodiment of the present invention further provides an uplink scheduling system, including a base station and a UE to be scheduled;
  • the base station is configured to: group the UEs to be scheduled; assign group identification information to each UE group, and send the group identification information allocated to the UE group in the UE group to be sent to the UEs in each UE group; a PDCCH scrambled using the group identification information of the UE group in which the UE is located, where the PDCCH carries scheduling information;
  • the UE to be scheduled is configured to: receive the group identity information sent by the base station, receive the PDCCH that is sent by the base station and use the group identity information to be scrambled; after contending for the resource, send the PUSCH according to the indication of the scheduling information, and send the identifier. Information about this UE.
  • the user equipment sends a physical uplink shared channel to the subframe corresponding to the physical downlink control channel that is scrambled by the group identifier information of the user equipment group in which the user equipment group is located. For: assigning, by the user equipment in each user equipment group, a parameter for identifying the user equipment in the user equipment group, and sending the user equipment in each user equipment group to be allocated for identification in the user equipment group.
  • User equipment parameters For: assigning, by the user equipment in each user equipment group, a parameter for identifying the user equipment in the user equipment group, and sending the user equipment in each user equipment group to be allocated for identification in the user equipment group.
  • the method is further configured to: receive, by the base station, the user equipment that is used to identify the user equipment in the user equipment group. And sending the information identifying the user equipment according to the parameter used to identify the user equipment in the user equipment group, and generating and transmitting the information identifying the user equipment.
  • the method, device and system provided by the embodiments of the present invention are applicable to scheduling resources on a carrier of an unlicensed frequency band for uplink transmission.
  • the scheduling information sent by the base station indicates the resources for the uplink data transmission on the carrier of the unlicensed frequency band, and the UE competes for the resources on the carrier of the unlicensed frequency band indicated by the scheduling information.
  • the LBT mode competes for resources.
  • the method, the device and the system provided by the embodiments of the present invention are also applicable to scheduling other resources for uplink data transmission, and the scheduled resources need to be occupied by the UE in a competitive manner.
  • embodiments of the present invention can be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or a combination of software and hardware. Moreover, the invention can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) including computer usable program code.
  • computer-usable storage media including but not limited to disk storage, CD-ROM, optical storage, etc.
  • the computer program instructions can also be stored in a computer readable memory that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer readable memory produce an article of manufacture comprising the instruction device.
  • the apparatus implements the functions specified in one or more blocks of a flow or a flow and/or block diagram of the flowchart.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente invention concerne un dispositif, un système et un procédé de programmation de liaison montante. Le procédé comprend les étapes suivantes : une station de base groupe les UE à programmer ; la station de base attribue et envoie des informations d'identification de groupe à chaque groupe d'UE ; la station de base envoie, à chaque UE du groupe d'UE correspondant, un PDCCH brouillé au moyen des informations d'identification de groupe du groupe d'UE dans lequel se trouve l'UE, le PDCCH portant des informations de programmation ; l'UE reçoit les informations d'identification de groupe attribuées par la station de base ; l'UE reçoit le PDCCH brouillé au moyen des informations d'identification de groupe et envoyé par la station de base ; et après l'acquisition de la ressource par l'intermédiaire d'une mise en concurrence, l'UE envoie un PUSCH selon l'indication des informations de programmation, et envoie les informations identifiant l'UE. La solution technique fournie par les modes de réalisation de la présente invention améliore l'efficacité de programmation de liaison montante et le taux d'utilisation de ressource de liaison montante.
PCT/CN2015/091947 2014-11-06 2015-10-14 Procédé, dispositif et système de programmation de liaison montante WO2016070703A1 (fr)

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