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WO2016070660A1 - Procédé et dispositif pour indiquer et traiter la fin de transmission de données - Google Patents

Procédé et dispositif pour indiquer et traiter la fin de transmission de données Download PDF

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Publication number
WO2016070660A1
WO2016070660A1 PCT/CN2015/086274 CN2015086274W WO2016070660A1 WO 2016070660 A1 WO2016070660 A1 WO 2016070660A1 CN 2015086274 W CN2015086274 W CN 2015086274W WO 2016070660 A1 WO2016070660 A1 WO 2016070660A1
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Prior art keywords
mac
data
units
consecutive
mac pdu
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English (en)
Chinese (zh)
Inventor
杨瑾
李儒岳
吴栓栓
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present invention relates to the field of communications, and in particular to an indication, processing method and apparatus for ending data transmission.
  • D2D device-to-device
  • UE User Equipment
  • 1 is a schematic diagram of a D2D communication structure according to the related art. As shown in Figure 1, this communication mode has characteristics that are significantly different from the traditional cellular system communication mode.
  • D2D transmission can not only save wireless spectrum resources, but also reduce the core.
  • the data transmission pressure of the network reduces the system resource occupation, increases the spectrum efficiency of the cellular communication system, reduces the terminal transmission power consumption, and largely saves the network operation cost.
  • FIG. 2 is a schematic diagram of a frame structure of an LTE system according to the related art.
  • the radio resource divides resources in units of radio frames in the time domain, each radio frame is 10 ms, and may include 10 subframes.
  • Each subframe is 1 ms, which can be divided into 2 slots of 0.5 ms, and the same frame structure is adopted in D2D communication.
  • the data between the eNB and the UE is a MAC service data unit (SDU) unit and a MAC layer related control element (
  • the control element (referred to as CE) is encapsulated into a MAC protocol data unit (PDU) for packet encapsulation and transmission according to certain rules.
  • the format of the MAC PDU of the LTE system is as shown in FIG. 3: the whole is divided into two parts: a MAC PDU header (Header) and a MAC PDU payload (Payload). In a MAC PDU, the header part is in front, and then the payload is received. section.
  • the MAC PDU header contains a plurality of MAC PDU subheaders (Sub-headers), the payload portion contains a number of MAC SDUs and MAC CEs, and may also include a certain padding byte Padding introduced according to the length specification of the MAC PDU.
  • the transmitting end UE indicates the physical side link shared channel (PSSCH) resource and related control information used in the D2D link control information (SCI) signaling.
  • PSSCH physical side link shared channel
  • SCI D2D link control information
  • the transmission of D2D data is performed on the indicated PSSCH resource.
  • the sender UE is at SCI
  • the PSSCH period resource or the PSSCH subframe resource used in the physical side link control channel (PSCCH) period is indicated by a Time Resource Pattern (TRP).
  • TRP Time Resource Pattern
  • each TRP index corresponds to a unique bitmap pattern.
  • the bitmap pattern indicated by the TRP the corresponding subframe whose bit identifier is "1" is indicated as a PSSCH subframe, and the bitmap is a bitmap.
  • the pattern is iteratively repeated within the PSCCH period to achieve a sub-frame configuration indication for the entire period.
  • the transmitting end UE can reach the configuration indication of one or more PSSCH subframes in the period by transmitting the valid SCI information once in each period.
  • the scheduling indication of the SSCH to the PSSCH resource is in units of a period, so that there may be a certain difference between the resource scheduling indication of the larger granularity and the actual actual service requirement, so that the indicated PSSCH subframe and the transmitting UE need to transmit data. There is no exact match between them.
  • the transmitting UE does not transmit valid data on all or part of the indicated PSSCH subframes, the transmitting UE cannot indicate the remaining PSSCH subframes that do not carry data, and the receiving UE needs to all of them without explicit indication.
  • the configured PSSCH subframe is detected and received, so there is a certain power waste.
  • the embodiment of the present invention provides an indication, a processing method, and a device for ending the data transmission, so as to solve at least the problem that the resource scheduling indication mode used in the related art and the dynamic service actual requirement are different, which is easy to cause power waste.
  • a method of indicating end of data transmission is provided.
  • the method for indicating the end of data transmission includes: determining an indication manner adopted on a data subframe resource of consecutive X units included in the identification window, wherein the indication manner is used to indicate that the receiving end stops in the continuous X.
  • the subsequent data sub-frame resources of the data sub-frame resources of the unit are detected and received, X is the length of the identification window, and X is a positive integer; the corresponding operation is performed according to the indication manner.
  • determining the indication manner adopted on the data subframe resources of the consecutive X units included in the identification window includes one of: not transmitting a signal on the data subframe resources of consecutive X units included in the identification window, And indicating, if the receiving end does not detect a valid signal on consecutive X units of data subframe resources, stopping detecting and receiving on the subsequent data subframe resources; and consecutively contiguous X units of data subframes included in the identification window
  • the identifier signal is sent on the resource, where the identifier signal is used to indicate that the receiving end stops detecting and receiving on the subsequent data subframe resource if the identifier signal is detected on the data sub-frame resources of the consecutive X units.
  • the length X of the identification window is in units of subframes or in units of the number of subframes required for each Medium Access Control (MAC) Protocol Data Unit (PDU) transmission.
  • MAC Medium Access Control
  • PDU Protocol Data Unit
  • the length X of the identification window is configured by the network side through high layer signaling, wherein the high layer signaling is one of the following: a system information block (SIB) message, a radio resource control (RRC) message.
  • SIB system information block
  • RRC radio resource control
  • the length X of the identification window is determined by a system pre-configured value or a fixed value defined by the system.
  • the length X of the identification window is determined by the time domain resource configuration parameters.
  • the time domain resource configuration parameter comprises at least one of: a data configuration indication period; a valid indication digit in a time domain resource pattern (TRP); a number of subframes in the data subframe resource pool; and a number of transmitted MAC PDUs The maximum number of MAC PDU transmissions available.
  • TRP time domain resource pattern
  • the data configuration indication period is one of: a physical edge link shared channel (PSSCH) resource period, and a physical edge link control channel (PSCCH) resource period.
  • PSSCH physical edge link shared channel
  • PSCCH physical edge link control channel
  • the number of valid indication bits in the TRP is the number of bits in the TRP bitmap that take a value of one.
  • the number of subframes in the data subframe resource pool is the number of data subframes included in the PSSCH resource pool.
  • the number of transmitted MAC PDUs is the number of MAC PDUs sent by the transmitting end in one PSSCH or PSCCH period.
  • the maximum number of available MAC PDU transmissions is the maximum number of bearable MAC PDUs on a PSSCH subframe available within one PSSCH or PSCCH period.
  • the length X of the identification window is a logically consecutive subframe based on X units of data sub-frame resources.
  • indicating that the data transmission end of the receiving end is ended by not transmitting a signal or transmitting an identification signal means that the data transmission ends in a certain period, and the period is a PSSCH or a PSCCH period.
  • X is in units of 4 subframes.
  • the end of the data transmission end of the receiving end by not transmitting the signal or transmitting the identification signal includes one of the following: the transmitting end has no data to be sent in the current PSSCH or PSCCH period; the transmitting end has sent one or more in the current PSSCH or PSCCH period.
  • the identification signal comprises at least one of the following: a MAC PDU whose information content is all 0s; a MAC PDU whose information content is all 1; a MAC PDU including a MAC sub-header; a MAC PDU including a MAC Control Element CE; MAC PDU of MAC service data unit SDU; MAC PDU without MAC SDU; information block is all 0 transport block TB; information content is all 1 transport block TB; information content is pre-configured or fixed special sequence TB.
  • the identification signal is a MAC PDU including an identifier sub-header
  • the identifier sub-header is a system-defined special MAC sub-header for indicating that the MAC PDU including the MAC sub-header is an identifier MAC PDU.
  • the identifier signal is a MAC PDU that includes the MAC CE
  • the identifier MAC CE is a system-defined special MAC CE, and is used to indicate that the MAC PDU that includes the MAC CE is an identifier MAC PDU.
  • the identifier signal is a MAC PDU that includes the MAC SDU
  • the identifier MAC SDU is a system-defined special MAC SDU, and is used to indicate that the MAC PDU that includes the MAC SDU is an identifier MAC PDU.
  • the MAC PDU does not carry any MAD SDU, and is used to indicate that the MAC PDU is an identified MAC PDU.
  • the identification signal is a TB whose information content is a special sequence
  • the sequence in which 1 and 0 are alternately reciprocated is the information content of the TB.
  • the network side comprises at least one of the following entities: an evolved base station (eNB); a relay station (RN); a cell cooperation entity (MCE); a gateway (GW); a mobility management device (MME); an evolved universal terrestrial wireless connection Network Access (EUTRAN); Operations Management and Maintenance (OAM) Manager.
  • eNB evolved base station
  • RN relay station
  • MCE cell cooperation entity
  • GW gateway
  • MME mobility management device
  • EUTRAN Operations Management and Maintenance
  • a processing method for ending data transmission is provided.
  • the processing method for ending the data transmission includes: obtaining an indication manner adopted by the transmitting end on the data sub-frame resources of consecutive X units included in the identification window, where the indication manner is used to indicate that there are consecutive X
  • one of the indication manners adopted by the transmitting end on the data sub-frame resources of the consecutive X units included in the identification window is: determining that the transmitting end does not have the data sub-frame resources of the consecutive X units included in the identification window. Transmitting a signal, if the receiving end does not detect a valid signal on the data sub-frame resources of the consecutive X units, stopping detecting and receiving on the subsequent data sub-frame resource; acquiring the continuous X included in the identification window of the transmitting end
  • the identification signal is sent on the data sub-frame resource of the unit, where the identification signal is used to indicate that the receiving end stops detecting and receiving on the subsequent data sub-frame resource if the identification signal is detected on the consecutive X units of the data sub-frame resource.
  • an indication device for ending data transmission is provided.
  • the indication device for ending the data transmission includes: a determining module, configured to determine an indication manner adopted on a data subframe resource of consecutive X units included in the identification window, wherein the indication manner is used to indicate reception
  • the terminal stops detecting and receiving on the subsequent data sub-frame resources of the data sub-frame resources of the consecutive X units, where X is the length of the identification window, X is a positive integer; and the execution module is set to perform the corresponding according to the indication manner. Operation.
  • the determining module is configured to determine that the indication manner adopted on the data sub-frame resources of the consecutive X units included in the identification window comprises one of the following: a data sub-frame resource of consecutive X units included in the identification window
  • the signal is not sent, and is used to indicate that the receiving end stops detecting and receiving on the subsequent data subframe resource if the valid signal is not detected on the data sub-frame resources of the consecutive X units; the consecutive Xs included in the identification window
  • the identifier data is sent on the data sub-frame resource of the unit, where the identifier signal is used to indicate that the receiving end stops detecting and receiving on the subsequent data subframe resource if the identifier signal is detected on the data sub-frame resources of the consecutive X units.
  • the length X of the identification window is in units of subframes or in units of the number of subframes required for each MAC PDU transmission.
  • the length X of the identification window is configured by the network side through high layer signaling, wherein the high layer signaling is one of the following: an SIB message, an RRC message.
  • the length X of the identification window is determined by a system pre-configured value or a fixed value defined by the system.
  • the length X of the identification window is determined by the time domain resource configuration parameters.
  • the time domain resource configuration parameter comprises at least one of the following: a data configuration indication period; a valid indication digit in the TRP; a number of subframes in the data subframe resource pool; a number of transmitted MAC PDUs; a maximum available MAC PDU The number of transmissions.
  • the data configuration indication period is one of the following: a PSSCH resource period, and a PSCCH resource period.
  • the number of valid indication bits in the TRP is the number of bits in the TRP bitmap that take a value of one.
  • the number of subframes in the data subframe resource pool is the number of data subframes included in the PSSCH resource pool.
  • the number of transmitted MAC PDUs is the number of MAC PDUs sent by the transmitting end in one PSSCH or PSCCH period.
  • the maximum number of available MAC PDU transmissions is the maximum number of bearable MAC PDUs on a PSSCH subframe available within one PSSCH or PSCCH period.
  • the length X of the identification window is a logically consecutive subframe based on X units of data sub-frame resources.
  • indicating that the data transmission end of the receiving end is ended by not transmitting a signal or transmitting an identification signal means that the data transmission ends in a certain period, and the period is a PSSCH or a PSCCH period.
  • X is in units of 4 subframes.
  • the end of the data transmission end of the receiving end by not transmitting the signal or transmitting the identification signal includes one of the following: the transmitting end has no data to be sent in the current PSSCH or PSCCH period; the transmitting end has sent one or more in the current PSSCH or PSCCH period.
  • the identification signal comprises at least one of the following: a MAC PDU whose information content is all 0s; a MAC PDU whose information content is all 1; a MAC PDU including a MAC sub-header; a MAC PDU including a MAC Control Element CE; MAC PDU of MAC service data unit SDU; MAC PDU without MAC SDU; information block is all 0 transport block TB; information content is all 1 transport block TB; information content is pre-configured or fixed special sequence TB.
  • the identification signal is a MAC PDU including an identifier sub-header
  • the identifier sub-header is a system-defined special MAC sub-header for indicating that the MAC PDU including the MAC sub-header is an identifier MAC PDU.
  • the identifier signal is a MAC PDU that includes the MAC CE
  • the identifier MAC CE is a system-defined special MAC CE, and is used to indicate that the MAC PDU that includes the MAC CE is an identifier MAC PDU.
  • the identifier signal is a MAC PDU that includes the MAC SDU
  • the identifier MAC SDU is a system-defined special MAC SDU, and is used to indicate that the MAC PDU that includes the MAC SDU is an identifier MAC PDU.
  • the MAC PDU does not carry any MAD SDU, and is used to indicate that the MAC PDU is an identified MAC PDU.
  • the identification signal is a TB whose information content is a special sequence
  • the sequence in which 1 and 0 are alternately reciprocated is the information content of the TB.
  • the network side comprises at least one of the following entities: eNB; RN; MCE; GW; MME; EUTRAN; OAM manager.
  • a processing apparatus for ending data transmission is provided.
  • the processing device for ending the data transmission includes: an obtaining module, configured to acquire an indication manner adopted by the transmitting end on the data sub-frame resources of consecutive X units included in the identification window, wherein the indication manner is used Indicates that the data transmission ends on the data sub-frame resources of consecutive X units, X is the length of the identification window, and X is a positive integer; and the processing module is configured to stop subsequent data of the data sub-frame resources in consecutive X units according to the indication manner. Detection reception is performed on the subframe resource.
  • the acquiring module is configured to obtain one of the indication manners adopted by the sending end on the data sub-frame resources of the consecutive X units included in the identification window: determining the data of the consecutive X units included in the identification window of the sending end.
  • a signal is not sent on the subframe resource, and is used to indicate that the receiving end stops detecting and receiving on the subsequent data subframe resource if the valid signal is not detected on the data sub-frame resources of the consecutive X units;
  • the identifier signal is sent on the data sub-frame resource of the consecutive X units included in the window, where the identifier signal is used to indicate that the receiving end stops the subsequent data if the identification signal is detected on the data sub-frame resources of the consecutive X units. Detection reception is performed on the frame resource.
  • the indication manner adopted on the data sub-frame resource of the consecutive X units included in the identification window is used, where the indication manner is used to indicate that the receiving end stops the data sub-frame resource in consecutive X units.
  • the subsequent data sub-frame resource is detected and received, X is the length of the identification window, and X is a positive integer; the corresponding operation is performed according to the indication manner, and the resource scheduling indication mode and the dynamic service actual requirement adopted in the related art are solved. There are differences between them, which is easy to cause power waste, which reduces the power consumption of the UE and reduces signal interference.
  • FIG. 1 is a schematic diagram of a D2D communication structure according to the related art
  • FIG. 2 is a schematic diagram of a frame structure of an LTE system according to the related art
  • FIG. 3 is a schematic structural diagram of a related art LTE system MAC PDU
  • FIG. 4 is a schematic diagram of indicating a PSSCH subframe resource by a TRP according to the related art
  • FIG. 5 is a flowchart of a method for indicating end of data transmission according to an embodiment of the present invention
  • FIG. 6 is a flowchart of a processing method of ending data transmission according to an embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a signaling flow of configuring an X value by an SIB message on a network side according to a preferred embodiment of the present invention
  • FIG. 8 is a schematic diagram of a signaling flow of configuring an X value by an RRC message on a network side according to a preferred embodiment of the present invention
  • FIG. 9 is a schematic diagram of processing of a transmitting end and a receiving end of a system pre-configured identifier window length according to a preferred embodiment of the present invention.
  • FIG. 10 is a schematic diagram of processing of a transmitting end and a receiving end by using a system to fix an identifier window length according to a preferred embodiment of the present invention
  • FIG. 11 is a block diagram showing the structure of a pointing device for ending data transmission according to an embodiment of the present invention.
  • Figure 12 is a block diagram showing the structure of a processing device for ending data transmission according to an embodiment of the present invention.
  • FIG. 5 is a flowchart of a method of indicating end of data transmission according to an embodiment of the present invention. As shown in FIG. 5, the method may include the following processing steps:
  • Step S502 Determine an indication manner adopted on a data subframe resource of consecutive X units included in the identification window, where the indication manner is used to indicate that the receiving end stops subsequent data sub-frames of data sub-frame resources of consecutive X units. Detection and reception are performed on the frame resource, X is the length of the identification window, and X is a positive integer;
  • Step S504 Perform corresponding operations according to the indication manner.
  • the system uplink subframe can be used as the PSSCH subframe, and the D2D transmitting UE with the D2D data to be transmitted can obtain the PSSCH subframe configuration from the eNB, or in the resource pool pre-configured by the system.
  • a certain subframe is selected as a PSSCH subframe.
  • the transmitting UE indicates one or more PSSCH subframe resources used in the PSSCH period or the PSCCH period in the side link (ie, D2D link) control information (SCI).
  • the PSCCH period may be 40/80/160/320ms due to the scheduling of the eNB or the minimum time domain granularity when the UE is contending for the selected resource, and the actual data to be sent by the UE at the transmitting end is dynamic, and
  • the PSSCH subframe resources indicated by the periodic configuration may not match, so that the amount of data to be sent by the transmitting UE is less than the indicated subframe resources, so there is no signal to be transmitted on some or all of the subframes.
  • the indication manner may indicate that the receiving end stops in consecutive X.
  • determining the indication manner adopted on the data subframe resources of consecutive X units included in the identification window includes one of the following:
  • the indication mode is that no signal is sent on the data sub-frame resources of the consecutive X units included in the identification window, and is used to indicate that the receiving end stops if the valid signal is not detected on the data sub-frame resources of the consecutive X units. Performing detection and reception on subsequent data sub-frame resources;
  • the identifier signal is sent on the data sub-frame resources of the consecutive X units included in the identifier window, where the identifier signal is used to indicate that the receiving end detects the identifier signal on the data sub-frame resources of the consecutive X units. Then, the detection and reception on the subsequent data subframe resources are stopped.
  • the transmitting end UE when the transmitting end UE has no data to transmit, the length of the window is marked by X units of consecutive data. No signal is sent on the frame, or the transmission identification signal indicates the end of the data transmission in this period.
  • the unit of the length X of the identification window may be a subframe, that is, the set X value corresponds to the identification window being X data subframes, or the unit of X may also be each medium access control (Medium).
  • AccessControl referred to as MAC
  • Protocol Data Unit PDU
  • n When each MAC PDU transmission number is n, it is set.
  • the identification window corresponding to the X value contains X*n data sub-frames.
  • the value of the length X of the identification window can be determined by, without being limited to, one of the following ways:
  • the fourth mode is determined by the time domain resource configuration parameter, where the time domain resource configuration parameter may include, but is not limited to, at least one of the following:
  • the network side may include, but is not limited to, at least one of the following entities:
  • an evolved base station evolved NodeB, referred to as an eNB
  • eNB evolved NodeB
  • MCE Multi-cell/multicast Coordination Entity
  • Gateway (GateWay, GW for short);
  • Mobility Management Entity MME
  • EUTRAN Evolved Universal Terrestrial Radio Access Network
  • OAM Operation Administration and Maintenance
  • eNB is used as the configuration control entity on the network side as an example, but it does not constitute an undue limitation to the present invention.
  • the consecutive X units of data subframes included in the foregoing identification window refer to logical units of X units based on the data subframe resources, and the corresponding actual physical subframes may be continuous or discontinuous.
  • the above-mentioned transmitting end indicates that the end of the data transmission at the receiving end by not transmitting a signal or transmitting an identification signal means that the data transmission ends in a certain period, for example, a PSSCH or a PSCCH period.
  • the data sub-frame of the X units included in the above identification window, the length X of the identification window is an integer value that is any greater than zero, or an integer multiple of the number of transmissions of each MAC PDU.
  • the transmitting end indicates that the data transmission of the receiving end is ended by not transmitting a signal or transmitting an identification signal, and the end of the data transmission means that the transmitting end does not have a current PSSCH or PSCCH period.
  • the data is to be transmitted, or the sender has sent one or more MAC PDUs in the current PSSCH or PSCCH period, and there is no data to be transmitted on the remaining PSSCH subframes in the period.
  • the transmitting end indicates that the data transmission end of the receiving end is ended by sending an identification signal
  • the identification signal may be at least one of the following:
  • the information content is all "0" MAC PDU
  • the information content is all "1" MAC PDU
  • the information content is a transport block (TB) of all "0"s;
  • the information content is TB of all "1"
  • the information content is a pre-configured or fixed special sequence TB.
  • the identification signal is a MAC PDU including an identifier sub-header
  • the identifier sub-header is a system-defined special MAC sub-header for indicating that the MAC PDU including the MAC sub-header is an identifier MAC PDU.
  • the identifier signal is a MAC PDU that includes the MAC CE
  • the identifier MAC CE is a system-defined special MAC CE, and is used to indicate that the MAC PDU that includes the MAC CE is an identifier MAC PDU.
  • the identifier signal is a MAC PDU that includes the MAC SDU
  • the identifier MAC SDU is a system-defined special MAC SDU, and is used to indicate that the MAC PDU that includes the MAC SDU is an identifier MAC PDU.
  • the MAC PDU does not carry any MAD SDU, and is used to indicate that the MAC PDU is an identified MAC PDU.
  • the identification signal is a TB whose information content is a special sequence
  • the sequence in which 1 and 0 are alternately reciprocated is the information content of the TB.
  • FIG. 6 is a flowchart of a processing method of ending data transmission according to an embodiment of the present invention. As shown in FIG. 6, the method may include the following processing steps:
  • Step S602 Obtain an indication manner adopted by the sending end on the data sub-frame resources of the consecutive X units included in the identifier window, where the indication manner is used to indicate that the data transmission ends on the data sub-frame resources of the consecutive X units.
  • X is the length of the identification window, and X is a positive integer;
  • Step S604 Stop detecting and receiving on subsequent data subframe resources of consecutive X units of data subframe resources according to the indication manner.
  • the method shown in FIG. 6 solves the problem that the resource scheduling indication mode used in the related art and the dynamic service actual requirement are different, which is easy to cause power waste, thereby reducing the power consumption of the UE and reducing signal interference. .
  • step S602 one of the indication manners adopted by the transmitting end on the data sub-frame resources of consecutive X units included in the identification window is obtained:
  • Obtaining mode 1 determining that the transmitting end does not send a signal on the data sub-frame resources of consecutive X units included in the identification window, and is used to indicate that the receiving end does not detect a valid signal on the data sub-frame resources of consecutive X units, Stopping the detection and reception on the subsequent data subframe resources;
  • Obtaining mode 2 The sending end sends the identification signal on the data sub-frame resource of the consecutive X units included in the identifier window, where the identifier signal is used to indicate that the receiving end detects the data sub-frame resource in consecutive X units. When the signal is identified, the detection and reception on the subsequent data subframe resources are stopped.
  • the receiving UE when no valid signal is detected on consecutive X units of data subframes, or after receiving the identification signal, the data transmission in this period is considered to be ended, and no longer The data sub-frame is detected and received.
  • the eNB may indicate the length X of the identification window in the D2D communication in the cell by using a System Information Block (SIB, also referred to as a system broadcast message), and X is in units of subframes.
  • SIB System Information Block
  • the X value indicated in the SIB is a cell-level configuration parameter, that is, all D2D UEs in the cell are uniformly valid, or, further, the SIB can perform X value configuration according to different D2D UE groups, and the configuration indication is The X value is uniformly valid for UEs belonging to the corresponding D2D group, where X>0.
  • FIG. 7 is a schematic diagram of a signaling flow of configuring an X value by an SIB message on a network side according to a preferred embodiment of the present invention.
  • the D2D UE in the cell obtains the X value configuration.
  • the identification signal is sent on the next consecutive 4 PSSCH subframes, and the receiving end UE is instructed to complete the data transmission.
  • the receiving UE continuously detects the identification signals on the X subframes and determines that the data is transmitted in the current period, the subsequent data sub-frames are no longer received.
  • the receiving UE can effectively determine the end of the data transmission, thereby avoiding the detection and reception of the subsequent subframes to achieve the energy saving effect.
  • the eNB may indicate the length X of the identification window in the D2D communication by using a system radio resource control (Radio Resource Control, RRC for short) message, X is in units of subframes, and the RRC message is configured for the UE level, and may be independently performed for each UE.
  • RRC Radio Resource Control
  • the configuration of the X value indicates that the indicated X value is valid only for the transmitting UE receiving the RRC message, where X>0.
  • FIG. 8 is a schematic diagram of a signaling flow of configuring an X value by an RRC message on a network side according to a preferred embodiment of the present invention.
  • the transmitting UE forwards the configuration of the X value to the receiving UE on the PSBCH resource, thereby
  • the receiving end UE can enable the transmitting end UE to implement an indication of the end of the data transmission according to the unified identification window length.
  • FIG. 9 is a schematic diagram of processing of a transmitting end and a receiving end by using a system pre-configuration identifier window length according to a preferred embodiment of the present invention.
  • the transmitting UE does not transmit data in the PSCCH period, and does not transmit a signal in the corresponding subframe.
  • the receiving end UE performs detection and reception according to the indicated data subframe, and if no valid signal is detected in four consecutive subframes, it is considered that there is no data transmission in the current period, and the remaining data subframes are no longer received, thereby achieving The effect of energy saving.
  • FIG. 10 is a schematic diagram of processing of a transmitting end and a receiving end by a system fixed identification window length according to a preferred embodiment of the present invention.
  • the system fixed identification window length X 3
  • X is in units of subframes
  • logical consecutive data subframes used by the transmitting end UE are mapped to discontinuous physical subframes.
  • the transmitting end UE has no data to be sent in the PSCCH period, and then sends an identification signal in the corresponding subframe, that is, the identifier MAC sub-header, wherein the identifier MAC sub-header is a system-defined dedicated MAC sub-header, and the LCID field in the sub-header
  • the defined identifier indication value indicating that the MAC PDU including the MAC sub-header is an identifier packet, is used to indicate that the receiving end stops receiving detection of the remaining data subframe after receiving the MAC PDU.
  • the receiving UE performs detection and reception according to the indicated data subframe, and detects the identification signal in three consecutive subframes, and considers that there is no data transmission in the current period, and the remaining data subframes are no longer received, thereby achieving The effect of energy saving.
  • the length X of the identification window may be determined by the PSSCH or PSCCH resource period, and X is in units of subframes. As shown in Table 1, the transmitting end and the receiving end can obtain the PSCCH resource period through network configuration or other information indication, and the corresponding according to the PSCCH. The relationship between the period and X can determine the length of the identification window. Further, when the transmitting end UE needs to indicate that the receiving end UE has no data transmission, the UE does not send a signal or sends an identification signal in the identification window, and the receiving end UE detects that there are no valid signals or receives the identifier on the X consecutive data sub-frames. The signal is considered to be no longer detecting and receiving the remaining data sub-frames after the data in this period is transmitted.
  • the length X of the identification window can be determined by the value of the valid indication bit "k" in the TRP bitmap, and X is in units of subframes. As shown in Table 2, the sender and the receiver can obtain "k” through network configuration or other information indication. "Value configuration, the corresponding length of the identification window can be determined according to the relationship between "k" and X. Further, when the transmitting end UE needs to indicate that the receiving end UE has no data transmission, the UE does not send a signal or sends an identification signal in the identification window, and the receiving end UE detects that there are no valid signals or receives the identification signal on the X consecutive data sub-frames. If the data in this period is transmitted, the remaining data sub-frames will no longer be detected and received.
  • the length X of the identification window may be determined according to the number of subframes included in the PSSCH resource pool, and X is in units of subframes. As shown in Table 3, the sender and the receiver can obtain the PSSCH resource pool through network configuration or other information indication. The number of data sub-frames included, the corresponding length X of the identification window can be determined according to the relationship between the number of sub-frames in the resource pool and X.
  • the transmitting UE After the transmitting UE sends the data to be sent in the PSSCH period, if the remaining subframes are still idle, the UE needs to indicate that the receiving UE does not transmit data subsequently, and the transmitting UE sends the identification signal on consecutive X data subframes in the identification window.
  • the identification signal is a special bit sequence "101010" as the TB of the information content.
  • the length X of the identification window may be determined according to the PSCCH resource period and the number of valid bits in the TRP bitmap, and the X is in units of subframes. As shown in Table 4, the sender and the receiver can be obtained through network configuration or other information indication. The PSCCH resource period and the "k" value, further, the length X of the corresponding identification window can be determined.
  • the identifier signal is a MAC PDU that includes the identifier MAC CE, where the identifier MAC CE is a system-defined dedicated MAC CE, and the MAC PDU including the MAC CE is an identifier packet, and is used to indicate that the receiver receives the MAC PDU and stops the remaining Receive detection of data sub-frames.
  • the length X of the identification window may be determined by the number of MAC PDUs sent by the transmitting end UE in the current period, and X is in units of the number of transmission times n of each MAC PDU. As shown in Table 5, the receiving end can pass the MAC in the current period.
  • the receiving and/or subframe configuration of the PDU determines the number of MAC PDUs that have been transmitted, and accordingly determines the length X of the identification window according to the relationship between the number of MAC PDUs transmitted by the transmitting end and X.
  • the sender UE After the sender UE sends 2 MAC PDUs in the PSCCH period, there is no data to be sent. If there are still remaining subframes, the receiver UE needs to indicate that there is no data transmission subsequently.
  • the transmitting UE is consecutive X in the identification window. *n, that is, 3n data sub-frames transmit an identification signal, and the identification signal is a MAC PDU without any MAC SDU. After detecting the identification signal in 3n consecutive data subframes, the receiving UE considers that the data in the current period is transmitted, and no longer detects and receives the remaining data subframes.
  • the length X of the identification window may be determined by the maximum number of MAC PDUs that can be carried in the data sub-frame configured in the period, and X is the number of transmission times n of each MAC PDU. As shown in Table 6, the receiving end can pass the data in the current period.
  • the frame configuration determines the maximum number of MAC PDUs that can be carried, and then determines the length X of the identification window according to the relationship between the maximum number of bearable MACPDUs and X.
  • the transmitting end UE indicates that M data subframes are configured in the PSCCH period, and each of the MAC PDUs needs to use n data subframes for transmission, and the receiving UE can determine the maximum bearable MAC PDU of the configured M data subframes. Quantity.
  • the transmitting end needs to indicate that the receiving end UE has no data transmission in the current period, the transmitting end UE sends an identification signal on consecutive X*n data subframes in the identification window, and the receiving end UE is in X*n consecutive data sub-frames. After the frame detects the identification signal, it considers that the data in the current period is transmitted, and the remaining data subframes are no longer detected and received.
  • the length X of the identification window may be determined by the PSSCH or PSCCH resource period, and X is the number of transmission times n of each MAC PDU. As shown in Table 7, the sender and the receiver can obtain the PSCCH resource period through network configuration or other information indication. Then, according to the relationship between the PSCCH period and X, the identification window length can be determined. Further, when the transmitting end UE needs to indicate that the receiving end UE has no data transmission, the UE does not send a signal or sends an identification signal in the identification window, and the receiving end UE detects that there are no valid signals or receives the identifier on the X consecutive data sub-frames. The signal is considered to be no longer detecting and receiving the remaining data sub-frames after the data in this period is transmitted.
  • the length X of the identification window when the length X of the identification window is determined based on the PSSCH or the PSCCH resource period, it may be set that when the period is greater than a certain value, the identification window and the corresponding indication function are effective. As shown in Table 7, when the PSCCH period is 40ms, the X value is undefined, that is, the identification window mechanism is not used at this time.
  • the transmitting end Whether the transmitting end sends a valid MAC PDU on the data subframe in the period, the receiving end needs Receiving detection of all data sub-frames; and when the PSCCH period is greater than or equal to 80 ms, determining the corresponding identification window length according to the relationship between the system-defined period and the X value, when the transmitting end UE has no data to be sent,
  • the identifier signal is transmitted on consecutive X*n data subframes, that is, the MAC PDU including the MAC SDU, wherein the MAC SDU with the fixed special sequence as the information content is used as the identifier MAC SDU, for example, the information bit of the MAC SDU is "0", or all "1", or a fixed sequence such as "101010" or the like.
  • the indication device for ending the data transmission may be applied to the transmitting UE, which may include: a determining module 10 configured to determine, on a data subframe resource of consecutive X units included in the identification window.
  • the indication mode is used to indicate that the receiving end stops detecting and receiving on the subsequent data subframe resources of the consecutive X units of data subframe resources, where X is the length of the identification window, and X is a positive integer; Set to perform the corresponding operation as indicated.
  • the device shown in FIG. 11 solves the problem that the resource scheduling indication mode used in the related art is different from the dynamic service actual requirement, which is easy to cause power waste, thereby reducing the power consumption of the UE and reducing signal interference. .
  • the determining module 10 is configured to determine that the indication manner adopted on the data sub-frame resources of the consecutive X units included in the identification window comprises one of the following:
  • the indication mode is that no signal is sent on the data sub-frame resources of the consecutive X units included in the identification window, and is used to indicate that the receiving end stops if the valid signal is not detected on the data sub-frame resources of the consecutive X units. Performing detection and reception on subsequent data sub-frame resources;
  • the identifier signal is sent on the data sub-frame resources of the consecutive X units included in the identifier window, where the identifier signal is used to indicate that the receiving end detects the identifier signal on the data sub-frame resources of the consecutive X units. Then, the detection and reception on the subsequent data subframe resources are stopped.
  • the length X of the identification window is in units of subframes or in units of the number of subframes required for each MAC PDU transmission.
  • the length X of the foregoing identification window is configured by the network side through high layer signaling, wherein the high layer signaling may be one of the following:
  • the length X of the identification window is determined by a system pre-configured value or a fixed value defined by the system.
  • the length X of the identifier window is determined by a time domain resource configuration parameter, where the time domain resource configuration may include, but is not limited to, at least one of the following:
  • the foregoing data configuration indication period may be one of the following: a PSSCH resource period, and a PSCCH resource period.
  • the number of valid indication bits in the above TRP is the number of bits in the TRP bitmap that take a value of 1.
  • the number of subframes in the data subframe resource pool is the number of data subframes included in the PSSCH resource pool.
  • the number of MAC PDUs transmitted above is the number of MAC PDUs sent by the sender in one PSSCH or PSCCH period.
  • the maximum number of available MAC PDU transmissions described above is the maximum number of bearable MAC PDUs on the PSSCH subframe available in one PSSCH or PSCCH period.
  • the length X of the identification window is a logically consecutive subframe based on X units of data sub-frame resources.
  • indicating that the data transmission end of the receiving end is ended by not transmitting a signal or transmitting an identification signal means that the data transmission ends in a certain period, and the period is a PSSCH or a PSCCH period.
  • X is in units of 4 subframes.
  • the end of the data transmission end of the receiving end by not transmitting the signal or sending the identification signal may include one of the following:
  • the sender has no data to be sent in the current PSSCH or PSCCH period
  • the transmitting end has transmitted one or more MAC PDUs in the current PSSCH or PSCCH period, and there is no data to be transmitted on the remaining PSSCH subframes in the current PSSCH or PSCCH period.
  • the foregoing identification signal may include but is not limited to at least one of the following:
  • the information content is all 0 MAC PDUs
  • the information content is all 1 MAC PDU
  • the information content is all 0 transport blocks TB;
  • the information content is all 1 transport block TB;
  • the information content is a pre-configured or fixed special sequence TB.
  • the identification signal is a MAC PDU including an identifier sub-header
  • the identifier sub-header is a system-defined special MAC sub-header for indicating that the MAC PDU including the MAC sub-header is an identifier MAC PDU.
  • the identifier signal is a MAC PDU that includes the MAC CE
  • the identifier MAC CE is a system-defined special MAC CE, and is used to indicate that the MAC PDU that includes the MAC CE is an identifier MAC PDU.
  • the identifier signal is a MAC PDU that includes the MAC SDU
  • the identifier MAC SDU is a system-defined special MAC SDU, and is used to indicate that the MAC PDU that includes the MAC SDU is an identifier MAC PDU.
  • the MAC PDU does not carry any MAD SDU, and is used to indicate that the MAC PDU is an identified MAC PDU.
  • the identification signal is a TB whose information content is a special sequence
  • the sequence in which 1 and 0 alternately reciprocate is the information content of TB.
  • sequence in which 1 and 0 alternately reciprocate is “101010"; or, the sequence in which 1 and 0 alternately reciprocate is "010101".
  • the network side may include, but is not limited to, at least one of the following entities:
  • an evolved base station evolved NodeB, referred to as an eNB
  • eNB evolved NodeB
  • MCE Multi-cell/multicast Coordination Entity
  • Gateway (GateWay, GW for short);
  • Mobility Management Entity MME
  • EUTRAN Evolved Universal Terrestrial Radio Access Network
  • OAM Operation Administration and Maintenance
  • the processing device for ending the data transmission may include: an obtaining module 30, configured to acquire an indication manner adopted by the transmitting end on the data subframe resources of consecutive X units included in the identification window, where the indication is Mode for indication Data transmission ends on consecutive X units of data subframe resources, X is the length of the identification window, and X is a positive integer.
  • the processing module 40 is configured to stop subsequent data of the data sub-frame resources in consecutive X units according to the indication manner. Detection reception is performed on the subframe resource.
  • the obtaining module 30 is configured to obtain one of the indication manners adopted by the sending end on the data sub-frame resources of the consecutive X units included in the identification window:
  • Obtaining mode 1 determining that the transmitting end does not send a signal on the data sub-frame resources of consecutive X units included in the identification window, and is used to indicate that the receiving end does not detect a valid signal on the data sub-frame resources of consecutive X units, Stopping the detection and reception on the subsequent data subframe resources;
  • Obtaining mode 2 The sending end sends the identification signal on the data sub-frame resource of the consecutive X units included in the identifier window, where the identifier signal is used to indicate that the receiving end detects the data sub-frame resource in consecutive X units. When the signal is identified, the detection and reception on the subsequent data subframe resources are stopped.
  • the identification window X is used to identify the end of the data transmission, so that the transmitting UE can identify the end of the data transmission, and enable the receiving UE to determine the end of the data transmission by detecting in the identification window, and stop detecting and receiving the remaining subframes. It can reduce the power consumption of the UE and reduce the signal interference.
  • the eNB or other UEs may further be used for scheduling, thereby improving the utilization of system resources.
  • modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the indication, processing method, and apparatus for ending data transmission provided by the embodiments of the present invention have the following beneficial effects: eliminating the difference between the resource scheduling indication mode and the dynamic actual service requirement, and avoiding This eliminates power waste, which reduces UE power consumption and reduces signal interference.

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

Abstract

L'invention concerne un procédé et un dispositif permettant d'indiquer et de traiter la fin d'une transmission de données. Le procédé consiste : à déterminer un procédé d'indication adopté pour des ressources de sous-trames de données de X unités continues contenues dans une fenêtre d'identification, le procédé d'indication étant utilisé pour indiquer qu'une extrémité de réception cesse de détecter et de recevoir sur les ressources de sous-trames de données ultérieures des ressources de sous-trames de données des X unités continues X, X étant un nombre entier positif ; et à exécuter une opération correspondante selon le procédé d'indication. Selon la solution technique offerte par la présente invention, la consommation d'énergie d'un équipement utilisateur (UE) est réduite, et le brouillage de signal est réduit.
PCT/CN2015/086274 2014-11-06 2015-08-06 Procédé et dispositif pour indiquer et traiter la fin de transmission de données Ceased WO2016070660A1 (fr)

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