WO2017016388A1 - 一种反馈传输方法及装置 - Google Patents

一种反馈传输方法及装置 Download PDF

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Publication number
WO2017016388A1
WO2017016388A1 PCT/CN2016/089918 CN2016089918W WO2017016388A1 WO 2017016388 A1 WO2017016388 A1 WO 2017016388A1 CN 2016089918 W CN2016089918 W CN 2016089918W WO 2017016388 A1 WO2017016388 A1 WO 2017016388A1
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WIPO (PCT)
Prior art keywords
resource
information
terminal
identification information
base station
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PCT/CN2016/089918
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English (en)
French (fr)
Inventor
石靖
夏树强
戴博
戴谦
张雯
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中兴通讯股份有限公司
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Publication of WO2017016388A1 publication Critical patent/WO2017016388A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information

Definitions

  • This document relates to mobile communication technologies, and in particular, to a feedback transmission method and apparatus.
  • next-generation mobile communication technology Long Term Evolution (LTE)
  • LTE-Advance/LTE-A Long-Term Evolution Advance
  • 5G next-generation mobile communication technology
  • ultra-high speed, ultra-high capacity, ultra-high reliability, and ultra-low-latency transmission characteristics For the ultra-low latency index in 5G systems, it is currently recognized that the air interface delay is on the order of 1 ms.
  • FIG. 1 is a schematic diagram of an uplink data transmission process of a related LTE system. As shown in FIG.
  • the terminal requests an uplink resource from a base station (eNB, E-UTRAN NodeB), and carries SR information through a physical uplink control channel (PUCCH, Physical Uplink Control Channel);
  • eNB E-UTRAN NodeB
  • PUCCH Physical Uplink Control Channel
  • the eNB is informed of whether there is a resource requirement, and the specific resource is required to be further reported by the UE to the eNB, and the eNB sends a scheduling grant (SG, Schedule Grant) to allocate the resource and notify the UE.
  • SG Schedule Grant
  • the PDCCH Physical Downlink Control Channel
  • PUSCH Physical Uplink Shared Channel
  • FIG. 2 is a related competition-based uplink. Schematic diagram of the transmission process. As shown in FIG. 2, the eNB does not need to perform scheduling for each UE, but schedules allocation of contention resources, and each UE uses the allocated contention resources in a competitive manner to reduce transmission delay. At this time, the UE transmits uplink data (UL data).
  • UL data uplink data
  • C-RNTI Cell-Radio Network Temporary Identity
  • Another method for confirming UE information is to transmit SR information in addition to transmitting uplink data information. Since the SR is UE-specific, the eNB can know which UE the transmitted uplink data is from by receiving the SR information.
  • the time-frequency resource and the pilot cyclic shift are the same, and the base station is equivalent to data that is considered to have only one UE;
  • the base station solves the data and identification information of one of the UEs.
  • the base station sends an ACK message to the demodulated UE, and the other transmission fails because the feedback resources overlap.
  • the UE also receives the ACK message, that is, the UE that does not receive the ACK message also receives the ACK message; or the base station only solves the identification information of one of the UEs, and the base station sends a NACK message to the demodulated UE due to The feedback resources overlap, and other UEs also receive a NACK message.
  • the embodiment of the present invention provides a feedback transmission method and device, which can enable a base station to accurately send a feedback message to a correct UE when different UEs use the same resource and the same pilot cyclic shift.
  • the embodiment of the present invention provides a feedback transmission method, including: determining, by a base station, feedback information corresponding to uplink transmission of a terminal, and a resource carrying the feedback information, where the feedback information and/or the resource carrying the feedback information are The base station determines at least according to the terminal identification information; the base station transmits the feedback information to the terminal by using the resource carrying the feedback information.
  • the embodiment of the present invention further provides a feedback transmission method, including: determining, by the terminal, at least the resource of the feedback information of the bearer base station for the uplink transmission according to the terminal identifier information; the terminal receiving the feedback information from the base station by using the resource.
  • the embodiment of the present invention further provides a feedback transmission device, which is applied to a base station, and includes: a processing module, configured to determine feedback information corresponding to uplink transmission of the terminal and a resource that carries the feedback information, where the feedback information and/or Or the resource carrying the feedback information is determined according to at least the terminal identification information; the transmission module is configured to transmit the feedback information to the terminal by using the resource carrying the feedback information.
  • a processing module configured to determine feedback information corresponding to uplink transmission of the terminal and a resource that carries the feedback information, where the feedback information and/or Or the resource carrying the feedback information is determined according to at least the terminal identification information
  • the transmission module is configured to transmit the feedback information to the terminal by using the resource carrying the feedback information.
  • the embodiment of the present invention further provides a feedback transmission device, which is applied to a terminal, and includes: a processing module, configured to determine, according to the terminal identification information, a resource that carries feedback information of the base station for uplink transmission; and the receiving module is configured to The base station receives the feedback information.
  • the base station determines the feedback information corresponding to the uplink transmission of the terminal and the resource that carries the feedback information, where the feedback information and/or the resource carrying the feedback information is determined by the base station according to at least the terminal identification information. Determining; the base station transmits feedback information to the terminal through the resource carrying the feedback information. In this way, when the UE uses the same resource and the same pilot cyclic shift, the base station sends the feedback message to the correct UE accurately, so as to ensure that the terminal obtains the correct uplink data transmission based on the contention mode. Feedback.
  • FIG. 1 is a schematic diagram of an uplink data transmission signaling process in a related LTE/LTE-A system
  • FIG. 2 is a schematic diagram of an uplink transmission process based on a competition mode
  • FIG. 3 is a flowchart of a feedback transmission method according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a feedback transmission apparatus applied to a base station according to an embodiment of the present disclosure
  • FIG. 6 is a schematic structural diagram of a feedback transmission apparatus applied to a terminal according to an embodiment of the present invention.
  • FIG. 3 is a flowchart of a feedback transmission method according to an embodiment of the present invention. As shown in FIG. 3, the feedback transmission method provided in this embodiment includes the following steps:
  • Step 11 The base station determines the feedback information corresponding to the uplink transmission of the terminal and the resource that carries the feedback information, where the feedback information and/or the resource that carries the feedback information is determined by the base station according to at least the terminal identification information.
  • the terminal identifier information includes any one or any of the following: a cell radio network temporary identifier (C-RNTI), a terminal identifier (UE ID), a scheduling request (SR) index, and a high-level signaling configured terminal that uses a contention resource.
  • C-RNTI cell radio network temporary identifier
  • UE ID terminal identifier
  • SR scheduling request
  • the identification information, the terminal identification information obtained according to the resource location information (for example, carried or obtained by the resource location information in an implicit manner).
  • the resource location information includes any one or any of the following: a physical resource block (PRB) index, a pilot cyclic shift, and a contention resource location index.
  • PRB physical resource block
  • the determining information of the feedback information and/or the resource carrying the feedback information includes, in addition to the terminal identification information, a resource location, a pilot cyclic shift, a total number of feedback resources, and the like.
  • the terminal identification information is information that can distinguish different terminals, that is, the terminal identification information of different terminals is different.
  • the terminal identification information used has a C-RNTI and a UE ID.
  • SIB high-level signaling
  • RRC Radio Resource Control
  • the UE ID includes an International Mobile Subscriber Identification Number (IMSI) and an International Mobile Equipment Identity (IMEI, International). Mobile Equipment Identification Number, Mobile Subscriber Identification Number (MSIN), Globally Unique Temporary UE Identity (GUTI), Temporary Mobile Subscriber Identity (TMSI), SAE Temporary UE S-TMSI (SAE-Temporary Mobile Subscriber Identity), MME-Temporary Mobile Subscriber Identity (M-TMSI).
  • IMSI is a logo for distinguishing mobile users and is stored in a Subscriber Identity Module (SIM) card. It is a valid information for a mobile communication network to distinguish mobile users. The total length is no more than 15 digits, and 0 to 9 are used. The number.
  • the M-TMSI is used to uniquely identify a UE in a Mobility Management Entity (MME).
  • MME Mobility Management Entity
  • the number of bits (bits) of the identity information of the terminal using the contention resource (hereinafter referred to as CB_UE ID) configured by the higher layer signaling is smaller than the number of bits of the C-RNTI.
  • the competitive resource includes any one of the following: all competing resources, and at least one competing resource after the competitive resources are divided by the predetermined resource granularity. It should be noted that the number of bits mentioned in the embodiment of the present invention may also be expressed by the size or the number of bits.
  • the identifier information of the terminal that uses the contending resource configured by the high-level signaling is only for the terminal that uses the contending resource, and the specific situation of the contending resource used may be further subdivided, and the contending resources are divided by a certain resource granularity
  • the high layer signaling configures identification information of terminals on one or more of all competing resources or divided competing resources.
  • the high-level signaling configuration uses the identification information of the terminal using the contention resource to be different from the identification information (such as the C-RNTI and the UE ID) used by all the terminals. Therefore, the bit of the identification information CB_UE ID of the terminal using the contention resource configured by the higher layer signaling is configured.
  • the identification information of the terminal that uses one of the competing resources after the contention granularity is allocated by the high-level signaling is used to indicate the use of this.
  • the number of bits of the terminal identification information obtained from the resource location information is the same as the number of bits of the identification information of the terminal using the contention resource configured by the higher layer signaling.
  • the base station may obtain the terminal identification information according to the resource location information, such as implicitly obtaining the terminal identification information according to one or more of the PRB index, the pilot cyclic shift, and the contention resource location index information, instead of Additional high-level signaling is required to configure the identification information of the terminal using the contention resource.
  • the terminal identification information is obtained according to at least one of the contention index of the contention of the competition resource (the content of the contention granularity is divided into the competition resources and the contention resources are re-numbered, and the contention index of each competition resource is obtained), the PRB index, and the pilot cyclic shift.
  • the number of bits of the terminal identification information is the same as the number of bits of the CB_UE ID described above.
  • the determining, by the base station, the resource that carries the feedback information, according to the terminal identification information includes: determining, by the base station, the Physical Hybrid Automatic Redirect Request Indicator Channel (PHICH) carrying the feedback information according to the terminal identification information.
  • PHICH Physical Hybrid Automatic Redirect Request Indicator Channel
  • at least the terminal identifier information is used to obtain a specific PHICH resource location.
  • the determining, by the base station, the PHICH resource that carries the feedback information according to the terminal identifier information includes: the base station distinguishing at least one of the following PHICH resources that carry the feedback information according to the terminal identifier information: the PHICH group number, the intra-group orthogonal sequence index number (hereinafter referred to as Is the serial number in the group).
  • the base station distinguishes at least one of the following PHICH resources carrying the feedback information according to the terminal identification information: a PHICH group number, an intra-group orthogonal sequence index number
  • the method further includes: the base station according to a fixed configuration, a predefined configuration, or The high-level signaling configuration (for example, displaying a notification or an implicit notification), knowing that at least one of the PHICH resources carrying the feedback information is distinguished according to at least the terminal identification information: a PHICH group number, and an intra-group orthogonal sequence index number.
  • the base station learns to distinguish at least one of the following PHICH resources that carry the feedback information according to the terminal identification information: the PHICH group number and the intra-group orthogonal sequence index number, including: the base station downlink total resources according to the system bandwidth. Number of blocks And the PHICH group quantity adjustment factor N g is obtained to distinguish at least one of the following PHICH resources carrying the feedback information according to the terminal identification information: a PHICH group number, and an intra-group orthogonal sequence index number.
  • the PHICH resource consists of The definition is as shown in equation (1). among them, Is the PHICH group number, Is the serial number in the group, Is the lowest numbered PRB index in the uplink resource allocation, and n DMRS is the pilot cyclic shift index in the uplink data transmission. It is the spreading factor used in PHICH modulation. It is the total number of PHICH group numbers, and its calculation is as shown in equation (2), where N g is the PHICH group number adjustment factor, which is determined by the high-level signaling configuration. The number of downlink total resource blocks (RBs) in the system bandwidth is related to the system bandwidth. The value of I PHICH is as shown in equation (3). Indicates rounding down, Indicates rounding up, mod means modulo function.
  • the terminal identification information is used as the C-RNTI. Since the PRB index and the Demodulation Reference Signal (DMRS) are the same, the PHICH group number and/or the intra-group number are enhanced by the C-RNTI. Make a distinction. Wherein, the PHICH group number enhanced by C-RNTI is determined according to formula (4), and the intra-group number enhanced by C-RNTI is determined according to formula (5).
  • DMRS Demodulation Reference Signal
  • the n C-RNTI indicates the value of the C-RNTI.
  • the terminal identification information is other information
  • the n C-RNTI is replaced by another variable, indicating the value of the corresponding terminal identification information.
  • the selected one of the PHICH group number and the larger number in the group is enhanced by the terminal identification information. Since the range of the PHICH group number is determined by the N g of the high-level signaling configuration, and the value of N g is ⁇ 1/6, 1/2, 1, 2 ⁇ , the PHICH group number is simultaneously Relevant, the upper limit of the PHICH group number shown in Table 1 PHICH group number is 0 to Spreading factor Decide, The value of the standard cyclic prefix (CP, Cyclic Prefix) is 4, that is, the sequence number in the group ranges from 0 to 7.
  • CP Cyclic Prefix
  • the oblique line in Table 1 is the dividing line.
  • the number of PHICH group numbers on the right side of the dividing line is more than the number of serial numbers in the group.
  • the left side of the dividing line (including the dividing line) is the number of serial numbers in the group more than the number of PHICH group numbers.
  • the base station and the terminal are based on And N g can make a judgment, the base station first determines the PHICH resource determination mode, and the terminal notifies according to the base station And N g can also determine the PHICH resource determination mode (here, it belongs to the high layer signaling implicit notification mode).
  • the PHICH resources are determined as follows:
  • the base station and the terminal are based on And N g can make a judgment, the base station first determines the PHICH resource determination mode, and the terminal notifies according to the base station And N g can also determine the PHICH resource determination mode (here, it belongs to the high layer signaling implicit notification mode).
  • the PHICH resources are determined as follows:
  • the PHICH group number and the intra-group serial number may be simultaneously enhanced using C-RNTI, or only one of them may be enhanced.
  • the resource location information may also be hidden.
  • the terminal identification information is obtained, and the number of bits is the same as the number of bits of the identification information of the terminal using the contention resource configured by the high layer signaling, so as to know that the PHICH group number and/or the intra-group number are distinguished by using the terminal identification information.
  • the PHICH group number and/or the intra-group sequence number may be related only to the terminal identifier information. That is, when the PHICH group number and the intra-group sequence number are determined at this time, it is irrelevant to the PRB resource index and the pilot cyclic shift, and the calculation expression is as follows:
  • the PHICH group number and/or the intra-group sequence number may be related only to the terminal identification information and the pilot cyclic shift. That is, when the PHICH group number and the intra-group serial number are determined at this time, it is irrelevant to the PRB resource index, and the calculation expression is as follows:
  • the larger one of the optional PHICH group number and the intra-group number is enhanced by the terminal identification information, and different UEs that use the same time-frequency resource and the same pilot cyclic shift can be distinguished, and then different UEs according to the respective terminal identifiers Information (such as C-RNTI) demodulates feedback information from the base station on different PHICH resources.
  • C-RNTI terminal identifiers Information
  • the determined PHICH resource is a resource other than the PHICH resource used by the legacy UE or the non-contention transmission terminal in the total PHICH resource.
  • the problem of the resource conflict with the legacy UE needs to be considered.
  • the optional method is to directly distinguish the PHICH resource, and the determined PHICH resource is the legacy PHICH resource except the legacy UE or A resource other than the PHICH resource used by the non-contention transmission terminal, that is, a set of PHICH group numbers and/or intra-group numbers are reserved for the UE based on the contention transmission, and may be referred to as an ePHICH resource area, for example.
  • the ACK/NACK information of the plurality of terminals is carried, and each terminal that performs uplink data transmission using the contention mode is distinguished by the positional order of the ACK/NACK information.
  • the base station determines, according to the terminal identifier information, feedback information corresponding to the uplink transmission of the terminal, and the feedback information is transmitted by using the PHICH resource.
  • the feedback information includes: feedback correct and/or error information of the uplink data transmission (ie, ACK/NACK information) and terminal identification information; or ACK/NACK information after the scrambling sequence initialization process is performed using the terminal identification information.
  • the ACK/NACK information is initialized by a scrambling sequence by using terminal identification information.
  • the PHICH channel carries content (such as ACK/NACK information), and the symbol is spread when multiplied by the orthogonal sequence.
  • d(i) is the spread-modulated modulation symbol of the complex-valued modulation symbol in the PHICH channel
  • w(i) is the orthogonal sequence used for the PHICH modulation process
  • z(i) is the bit block of the PHICH channel undergoes constellation modulation
  • c(i) is a scrambling sequence
  • the calculation of the initial value of the scrambling sequence involves terminal identification information, taking C-RNTI as an example.
  • n s is the slot number
  • n RNTI is the value of the C-RNTI; taking the CB_UE ID as an example, the value is expressed as Or n CB_UE ID , the scrambling sequence initialization value is:
  • the UEs that have the correct time-frequency resources, the same group number, and the intra-group number in the scrambling parameters can ensure that only the UEs with the correct terminal identification information (such as C-RNTI) can demodulate their own. Feedback.
  • the feedback information carried by the PHICH resource includes ACK/NACK information and terminal identification information.
  • the terminal identifier information is added on the basis of the original ACK/NACK information.
  • a 1-bit ACK/NACK+16-bit C-RNTI is used as the source of the ACK transmission, and the channel coding is 24 bits, and the Quadrature Phase Shift Keying (QPSK) modulation is used to map to 12 resource units (RE, Resource Element), corresponding to the Resource Element Group (REG) occupied by the PHICH, and not shared with the legacy PHICH resource;
  • the CB_UE ID is used to reduce the code rate, and the number of bits of the CB_UE ID is smaller than the number of bits of the C-RNTI.
  • the UEs with the same time-frequency resources, the same group number, and the intra-group number can ensure that only the UE with the correct terminal identification information (such as C-RNTI) can demodulate its own. Feedback.
  • the determining, by the base station, the resource of the feedback information according to the terminal identifier information includes: determining, by the base station, the uplink authorization information that carries the feedback information according to at least the terminal identifier information. That is, the feedback information is transmitted through uplink grant information (UL grant), wherein the feedback information includes ACK/NACK information and terminal identification information.
  • the ACK/NACK information may be feedback of one or more UEs.
  • the terminal identification information includes at least one of the following: a C-RNTI, and terminal identification information obtained by the base station (eNB) according to the resource location information (for example, obtained by an implicit manner).
  • the resource location information includes any one or any of the following: a PRB index, a pilot cyclic shift, and a contention resource location index.
  • the feedback information does not use the PHICH bearer, but uses the UL grant instead of the PHICH to send feedback information.
  • the UL grant only transmits feedback information.
  • the terminal identification information is exemplified by the C-RNTI, and the feedback information includes at least ACK/NACK information and terminal identification information (such as an RNTI value and terminal identification information implicitly obtained according to the resource location information).
  • the resource location information includes: a PRB index, a pilot cyclic shift, and a contention resource location index.
  • the ACK/NACK information is used as an independent source.
  • the terminal identification information may be used as an independent source or as a scrambling sequence of a Cyclic Redundancy Check (CRC) in the UL grant.
  • CRC Cyclic Redundancy Check
  • the size of the UL grant (ie, the number of bits included in the UL grant) Far less than the size of the associated UL grant, can trigger the termination of transmission or retransmission.
  • the UL grant includes scheduling information of the uplink data in addition to the feedback information, that is, the base station no longer uses the contention-based uplink data transmission mode for the terminal, and uses the scheduling mode instead.
  • the terminal identifier information may also be a UE ID or a CB_UEID. That is, the size of the UL grant may be the same as or different from the size of the associated UL grant, and may trigger retransmission or transmission of a new data packet.
  • the UL grant may be used to carry ACK/NACK information of multiple terminals, and each terminal that performs uplink data transmission using the contention mode is distinguished by the location order of the ACK/NACK information.
  • the feedback information only includes ACK information for at least one terminal uplink data transmission feedback. That is, the UL grant only includes ACK information, and does not transmit NACK information.
  • the size of the UL grant indicating the ACK information may be smaller than the size of the related UL grant, or the same, and the ACK information is used to continue to trigger the transmission of the next uplink new data packet.
  • the UL Grant indicates at least a new packet resource location, a modulation mode, and a Transmission Power Control (TPC); or, at this time, the size of the UL grant indicating the ACK information may be smaller than the size of the associated UL grant, and is used to indicate the ACK. Information and terminate the transfer.
  • a UL grant including at least feedback information (such as ACK/NACK information and terminal identification information) instead of the PHICH can uniquely identify the terminal, and ensure that only the different UEs that use the same time-frequency resource and the same pilot cyclic shift are only The UE with the correct terminal identification information can demodulate its own feedback information.
  • Step 12 The base station transmits the feedback information to the terminal by using the resource carrying the feedback information.
  • FIG. 4 is a flowchart of a feedback transmission method according to an embodiment of the present invention. As shown in FIG. 4, the feedback transmission method provided in this embodiment includes the following steps:
  • Step 21 The terminal determines, according to the terminal identification information, the resource that carries the feedback information of the base station for the uplink transmission.
  • the terminal identifier information includes any one or any of the following: C-RNTI, UE ID, SR index, identifier information of the terminal using the contention resource configured by the high layer signaling, and terminal identifier information obtained according to the resource location information (for example, The resource location information is carried or obtained in an implicit manner; the resource location information includes any one or any of the following: a PRB index, a pilot cyclic shift, and a contention resource location index.
  • the terminal identification information is as described in the previous embodiment, and thus is not described herein.
  • the method further includes: the terminal determining, according to the fixed configuration, the predefined configuration, or the high-level signaling configuration (such as displaying the notification or the implicit notification), the resource that carries the feedback information according to the terminal identification information.
  • the terminal determining, according to the fixed configuration, the predefined configuration, or the high-level signaling configuration (such as displaying the notification or the implicit notification), the resource that carries the feedback information according to the terminal identification information.
  • the method further includes: the terminal uses the terminal identification information as the uplink control message (UCI) information, and independently codes the uplink data information, and transmits the uplink transmission to the base station through the PUSCH bearer.
  • UCI uplink control message
  • ACK/NACK, RI (Rank Indication), Channel Quality Indicator (CQI, Channel Quality Indicator)/precoding in the UCI information may be adopted.
  • PMI Precoding Matrix Indicator
  • the obtained coded output is a fixed value, such as 32 bits, and the repetition is repeated until the length is reached; (2) the number of terminal identification information bits is > X, and the CQI/PMI information is added with CRC by data.
  • Step 22 The terminal receives feedback information from the base station by using the resource.
  • the method further includes: the terminal terminating the transmission, retransmitting the old data, or transmitting the new data according to the received feedback information.
  • the terminal performs termination transmission or retransmits the old data according to the feedback information received by the PHICH, and retransmits the old data according to the feedback information received by the UL grant that is the same as or smaller than the related size. Transmitting new data; terminating transmission or retransmitting old data according to feedback information received by the UL grant bearer less than the relevant size.
  • the base station allocates X (eg, 10) terminals using the contention-based uplink data transmission using Y (eg, 2) PRB shared resources, and the X terminals randomly use the pilot cyclic shift in the Y PRBs.
  • the base station allocates the shared resources of the Y PRBs by using a group RNTI scrambling CRC UL grant, and the X terminals descrambled through the group RNTI to obtain Y PRBs that can be used, and the X terminals do not know each other. .
  • UE1 and UE2 in the X terminals use the same cyclic shift. Since the uplink data is transmitted on the same Y PRB shared resources at the same time, the base station only demodulates the data of UE1 and the terminal identification information (such as the power of UE1). Strong, or the channel condition of UE1 is better), which is equivalent to UE2 The transmission is clear and the base station does not discover UE2.
  • the terminal is notified according to the base station And N g may also implicitly determine that the PHICH resource determination mode is to use terminal identification information only when the intra-group number is calculated.
  • UE1 receives feedback information from the base station on its own PHICH channel resource, and the information UE2 cannot receive it, and UE2 considers that its transmission failed.
  • the terminal with low delay requirement is used in the shared resource allocated by the base station to perform uplink data transmission based on the contention mode, and the number of the selected PHICH group number and the serial number in the group is the terminal identification information.
  • the enhancement may be performed to distinguish different UEs that use the same time-frequency resource and the same pilot cyclic shift, and then receive feedback information from the base station on different PHICH resources according to respective terminal identification information (such as C-RNTI). In this way, when different UEs use the same resource and the same pilot cyclic shift, the base station accurately sends the feedback message to the correct UE, thereby ensuring that the terminal obtains correct feedback information when using the contention-based uplink data transmission.
  • the base station allocates X (eg, 100) terminals that use the contention-based uplink data transmission to use Y (eg, 20) PRB shared resources, where Y PRBs are divided by Y1 (eg, 4) PRBs. For Y2 (such as 5) resources.
  • the base station allocates the shared resources of the Y1 PRBs by using a group RNTI scrambling CRC UL grant, and the X1 (eg, 20) terminals descrambled through the group RNTI to obtain Y1 PRBs that can be used, and the base station is also used for each terminal.
  • the terminal identification information CB_UE ID is assigned.
  • X1 terminals do not know each other's existence.
  • the X1 terminals randomly use the pilot cyclic shift in the Y1 PRBs. Similar X2 terminals are randomly used in Y2 PRBs Pilot cyclic shift.
  • UE1 and UE2 in the X1 terminals use the same cyclic shift. Since the uplink data is transmitted on the same Y1 PRB shared resources at the same time, the base station only demodulates the data of UE1 and the terminal identification information (such as the power of UE1). Strong, or the channel condition of UE1 is better), which is equivalent to UE2 transparent transmission and the base station does not discover UE2.
  • the UE3 in the X2 terminals also uses the same cyclic shift as UE1 and UE2, but uses different resources on the Y2 PRB shared resources.
  • the base station also demodulates the data and terminal identification information of UE3.
  • the terminal is notified according to the base station And N g may also implicitly determine that the PHICH resource determination mode is to use the terminal identification information when calculating only the PHICH group number.
  • UE1 receives feedback information from the base station on its own PHICH channel resource, and the information UE2 cannot receive it, and UE2 considers that its transmission failed.
  • UE3 receives feedback information from the base station on its own PHICH channel resource. And whether the terminal identifier information of the UE1/UE2 and the UE3 are the same, the PHICH resource can be distinguished by the PRB resource.
  • the terminal with low delay requirement is used in the shared resource allocated by the base station to perform uplink data transmission based on the contention mode.
  • the number of the selected PHICH group number and the larger number in the group is used to identify the terminal.
  • the information is enhanced, and different UEs that use the same time-frequency resource and the same pilot cyclic shift can be distinguished, and then the feedback information from the base station is received on different PHICH resources according to the respective terminal identification information (such as CB_UE ID).
  • the base station accurately sends the feedback message to the correct UE, thereby ensuring that the terminal obtains correct feedback information when using the contention-based uplink data transmission.
  • the base station allocates X (eg, 10) using the uplink data transmission based on the contention mode.
  • the terminals use Y (eg, 10) PRB shared resources, and the X terminals randomly use pilot cyclic shift in Y PRBs.
  • the base station allocates the shared resources of the Y PRBs by using a group RNTI scrambling CRC UL grant, and the X terminals descrambled through the group RNTI to obtain Y PRBs that can be used, and the X terminals do not know each other.
  • Each terminal uses a shared resource at a granularity of Y1 (eg, 2) PRBs.
  • the UE1 in the X terminals uses the second Y1 size shared resource in the shared resource. Due to the uncertainty of wireless channel transmission (small scale fading), the base station only demodulates the data of UE1 but does not demodulate the data.
  • the identification information of the terminal such as C-RNTI demodulation error when C-RNTI is independently coded; or SR demodulation error when SR is transmitted independently
  • the base station needs to feed back ACK.
  • the base station implicitly obtains the terminal identification information according to the resource location information, such as determining the terminal identification information according to the number of the shared resource Y1 used, such as obtaining the CB_UE ID.
  • the terminal is notified according to the base station And N g may also implicitly determine that the PHICH resource determination mode is to use the terminal identification information when calculating only the PHICH group number.
  • UE1 implicitly obtains terminal identification information according to resource location information and receives feedback information from the base station on its own PHICH channel resource.
  • the terminal with low delay requirement is used in the shared resource allocated by the base station to perform uplink data transmission based on the contention method, and the terminal identification information is implicitly obtained according to the resource location, so that different competitions in the same time-frequency resource can be distinguished.
  • the UE of the resource receives feedback information from the base station on different PHICH resources according to respective terminal identification information (such as CB_UE ID).
  • CB_UE ID terminal identification information
  • the base station allocates X (eg, 10) terminals using the contention-based uplink data transmission using Y (eg, 2) PRB shared resources, and the X terminals randomly use the pilot cyclic shift in the Y PRBs.
  • the base station allocates the shared resources of the Y PRBs by using a group RNTI scrambling CRC UL grant, and the X terminals are descrambled by the group RNTI to obtain Y PRBs that can be used, and the base station also allocates terminal identification information for the X terminals.
  • the CB_UE ID and the second feedback resource are configured (using the same cyclic shift and the same shared resource corresponding to the same second feedback resource), and the X terminals do not know each other's existence.
  • the base station Since the uplink data is transmitted on the same Y PRB shared resources at the same time, the base station only demodulates the data of UE1 and the terminal identification information (such as the power of UE1). Strong, or the channel condition of UE1 is better), which is equivalent to UE2 transparent transmission and the base station does not discover UE2.
  • the base station determines the feedback information according to the terminal identification information of the UE1, and calculates the PHICH resource carrying the feedback ACK according to the lowest index of the used PRB resource label and the used pilot cyclic shift.
  • the PHICH feedback resource determined at this time is the same for UE1 and UE2, and no terminal identification information is used, that is,
  • the ACK information fed back by the base station to the UE1 also adds the terminal identification information CB_UE ID, wherein the ACK information and the CB_UE ID information are sent to the terminal as a source.
  • the code modulation process is not limited.
  • binary phase shift keying BPSK, Binary Phase Shift
  • RM Random Muller
  • TBCC tail-biting convolutional code
  • Keying or QPSK modulation occupies 12RE, ie 3REG, which is not shared with legacy PHICH. That is, the legacy PHICH resources calculated by the PHICH group number and the intra-group sequence number are not used.
  • the UE1 and the UE2 do not receive the feedback information from the base station on the legacy PHICH resource, and receive the feedback information from the base station on the second feedback resource, and the decoding is combined with the terminal identification information, and the feedback ACK information is sent by the base station to the UE1, and the UE2 I think I have failed to send.
  • the terminal allocated by the base station is used for the terminal with low delay requirement.
  • the feedback information is enhanced according to the terminal identification information, and different UEs that use the same time-frequency resource and the same pilot cyclic shift can be distinguished, and then the same PHICH according to the respective terminal identification information (such as CB_UE ID).
  • the resource receives feedback information from the base station and determines whether it is the terminal. In this way, when different UEs use the same resource and the same pilot cyclic shift, the base station accurately sends the feedback message to the correct UE, thereby ensuring that the terminal obtains correct feedback information when using the contention-based uplink data transmission.
  • the base station allocates X (eg, 10) terminals using the contention-based uplink data transmission using Y (eg, 2) PRB shared resources, and the X terminals randomly use the pilot cyclic shift in the Y PRBs.
  • the base station allocates the shared resources of the Y PRBs by using a group RNTI scrambling CRC UL grant, and the X terminals descrambled through the group RNTI to obtain Y PRBs that can be used, and the X terminals do not know each other. .
  • the base station Since the uplink data is transmitted on the same Y PRB shared resources at the same time, the base station only demodulates the data of UE1 and the terminal identification information (such as the power of UE1). Strong, or the channel condition of UE1 is better), which is equivalent to UE2 transparent transmission and the base station does not discover UE2.
  • the base station finds that there is still data information of low delay requirement by demodulating the uplink data information of the terminal. Therefore, the base station uses the UL grant to feed back the ACK according to the terminal identifier information of the UE1 and simultaneously schedules its subsequent data.
  • UE1 receives scheduling information from the base station, which contains feedback information ACK, and also contains scheduling information for scheduling subsequent data.
  • UE2 cannot receive the information, and since the base station does not send feedback on the PHICH resource, UE2 does not receive anything, and UE2 considers that its transmission failed.
  • the terminal with low delay requirement is used in the shared resource allocated by the base station to perform uplink data transmission based on the contention mode, and the base station uses the UL grant containing the feedback information, the terminal identification information, and the scheduling information to provide feedback information to the terminal.
  • the transmission in this way, enables different base stations to use the same resources and the same pilot cyclic shift, the base station accurately sends the feedback message to the correct UE, thereby ensuring that the terminal obtains correct feedback information when using the contention-based uplink data transmission. .
  • the base station allocates X (eg, 10) terminals that use the contention-based uplink data transmission to use Y (eg, 10) PRB shared resources, and the X terminals randomly use the pilot cyclic shift in the Y PRBs.
  • the base station allocates the shared resources of the Y PRBs by using a group RNTI scrambling CRC UL grant, and the X terminals descrambled through the group RNTI to obtain Y PRBs that can be used, and the X terminals do not know each other.
  • Each terminal uses a shared resource at a granularity of Y1 (eg, 2) PRBs.
  • the UE1 in the X terminals uses the second Y1 size shared resource in the shared resource, and is only the first data packet in the uplink data to be transmitted, due to the uncertainty of wireless channel transmission (small scale fading)
  • the base station only demodulates the data of the UE1 but does not demodulate the identification information of the terminal (such as C-RNTI demodulation error when C-RNTI independently coded transmission; or SR demodulation error when SR transmits independently), this The base station needs to feed back an ACK.
  • the base station finds that there is still data information of low delay requirement by demodulating the uplink data information of the terminal. Therefore, the base station scrambles the CRC according to the terminal identifier information of the UE1, and uses the UL grant to feed back the ACK and simultaneously schedule its subsequent data. At this time, the base station implicitly obtains the terminal identification information according to the resource location information, such as determining the terminal identification information according to the number of the shared resource Y1 used, such as obtaining the CB_UE ID.
  • the UE1 receives the scheduling information from the base station, and the terminal implicitly obtains the terminal identification information according to the number of the shared resource Y1 used by the terminal, demodulates the UL grant, and includes the feedback information ACK, and further includes scheduling information for scheduling subsequent data.
  • the terminal with low delay requirement is used in the shared resource allocated by the base station to perform uplink data transmission based on the contention mode, and the base station uses the terminal identification information and the scheduling information that are implicitly obtained according to the resource location, and the scheduling information is used.
  • the UL grant transmits the feedback information to the terminal. In this way, when different UEs use the same resource and the same pilot cyclic shift, the base station accurately sends the feedback message to the correct UE, thereby ensuring that the terminal uses the contention-based uplink data transmission. Get the correct feedback and scheduling information.
  • the embodiment of the present invention further provides a feedback transmission apparatus, which is applied to a base station, as shown in FIG. 5, and includes: a processing module, configured to determine feedback information corresponding to uplink transmission of the terminal, and a resource that carries the feedback information, The feedback information and/or the resource carrying the feedback information to The transmission module is configured to transmit the feedback information to the terminal by using a resource that carries the feedback information.
  • the terminal identifier information includes any one or any of the following: C-RNTI, UE ID, SR index, identifier information of the terminal using the contention resource configured by the high layer signaling, and terminal identifier information obtained according to the resource location information.
  • the resource location information includes any one or any of the following: a PRB index, a pilot cyclic shift, and a contention resource location index.
  • the processing module is configured to: determine, according to the terminal identifier information, the resource that carries the feedback information at least: the PHICH resource that carries the feedback information is determined according to at least the terminal identifier information.
  • the feedback information includes:
  • Terminal identification information and ACK and/or NACK information for feeding back uplink data transmission are included in the following:
  • the ACK and/or NACK information of the feedback uplink data transmission after the scrambling sequence initialization processing is performed using the terminal identification information.
  • the processing module is configured to: determine, according to the terminal identification information, the resource that carries the feedback information at least: determining, according to the terminal identification information, the uplink authorization information of the bearer feedback information.
  • the feedback information includes: terminal identifier information and ACK and/or NACK information for the at least one terminal uplink data transmission feedback, where the terminal identifier information includes at least one of the following: a C-RNTI, and the base station eNB obtains according to the resource location information.
  • the terminal identification information, where the resource location information includes any one or any of the following: a PRB index, a pilot cyclic shift, and a contention resource location index.
  • the embodiment of the present invention further provides a feedback transmission device, which is applied to a terminal, as shown in FIG. 6, and includes: a processing module, configured to determine, according to the terminal identification information, a resource that carries feedback information of the base station for uplink transmission; and a receiving module. And being configured to receive feedback information from the base station through the resource.
  • the terminal identifier information includes any one or any of the following: C-RNTI, UE ID, SR index, identifier information of the terminal using the contention resource configured by the high layer signaling, and terminal identifier information obtained according to the resource location information.
  • the resource location information includes any one or any of the following: a PRB index, a pilot cyclic shift, and a contention resource location index.
  • the processing module is further configured to terminate the transmission according to the received feedback information. Lose, retransmit old data or transfer new data.
  • the apparatus further includes: a sending module, configured to use the terminal identification information as the UCI information, and independently code the uplink data information, and transmit the uplink transmission to the base station through the PUSCH.
  • a sending module configured to use the terminal identification information as the UCI information, and independently code the uplink data information, and transmit the uplink transmission to the base station through the PUSCH.
  • the processing module is further configured to: determine, according to the fixed configuration, the predefined configuration, or the high-level signaling configuration, the resource that bears the feedback information according to at least the terminal identification information.
  • the embodiment of the invention further provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the method described in the foregoing embodiments.
  • each module/unit in the above embodiment may be implemented in the form of hardware, for example, by implementing an integrated circuit to implement its corresponding function, or may be implemented in the form of a software function module, for example, executing a program stored in the memory by a processor. / instruction to achieve its corresponding function.
  • the invention is not limited to any specific form of combination of hardware and software.
  • the base station accurately sends the feedback message to the correct terminal, thereby ensuring that the terminal obtains correct feedback information when using the contention-based uplink data transmission.

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Abstract

一种反馈传输方法及装置，包括：基站确定与终端上行传输所对应的反馈信息和承载所述反馈信息的资源，其中，所述反馈信息和/或承载所述反馈信息的资源由基站至少根据终端标识信息确定；基站通过承载反馈信息的资源传输反馈信息至终端。上述技术方案能够实现不同终端使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的终端，从而保证终端在使用基于竞争方式的上行数据传输时获得正确的反馈信息。

Description

一种反馈传输方法及装置 技术领域
本文涉及移动通信技术，尤其涉及一种反馈传输方法及装置。
背景技术
随着第四代移动通信技术(4G，the 4th Generation mobile communication technology)长期演进(LTE，Long-Term Evolution)/高级长期演进(LTE-Advance/LTE-A，Long-Term Evolution Advance)系统商用的日益完善，对下一代移动通信技术即第五代移动通信技术(5G，the 5th Generation mobile communication technology)的技术指标要求也越来越高。业内普遍认为，下一代移动通信系统应具有超高速率、超高容量、超高可靠性以及超低延时传输特性等特征。对于5G系统中超低时延的指标目前公认的为空口时延约1ms的数量级。
通常LTE上行数据传输在连接态时，由发送调度请求(SR，Schedule Request)开始，经过一系列调度请求与授权最终发送上行数据。图1为相关LTE系统上行数据传输过程的示意图。如图1所示，首先，终端(UE，User Equipment)向基站(eNB，E-UTRAN NodeB)请求上行资源，通过物理上行控制信道(PUCCH，Physical Uplink Control Channel)承载SR信息；SR信息只负责告诉eNB是否有资源需求，而具体需要多少资源则由UE进一步上报存储器状态寄存器(BSR，Buffer State Register)信息告诉eNB；之后eNB发送调度授权(SG，Schedule Grant)分配资源并通知UE，由物理下行控制信道(PDCCH，Physical Downlink Control Channel)承载SG；UE接收资源分配结果的通知并传输上行数据，使用物理上行业务信道(PUSCH，Physical Uplink Shared Channel)承载上行数据；如果之后存在数据传输错误，UE还需要重传数据。
针对5G需求减少上行数据传输时延，目前有基于竞争(CB，Contention-Based)方式的上行数据传输，图2为相关的基于竞争方式的上行 传输过程示意图。如图2所示，eNB无需针对各个UE进行调度，而是调度分配竞争资源，每个UE以竞争方式使用所分配的竞争资源，减少传输时延；此时，UE除了传输上行数据(UL data)信息以外，还需要传输自己的标识信息，如小区无线网络临时标识(C-RNTI，Cell-Radio Network Temporary Identity)，以便eNB可以判断出接收到的上行数据是来自哪个UE；eNB将反馈上行数据传输的正确ACK或错误NACK消息反馈至UE。另一种确认UE信息的方法为传输上行数据信息以外，还需要传输SR信息，由于SR是UE专有，eNB通过接收SR信息可以知道传输的上行数据是来自哪个UE。
但是上述方法中都存在不同UE使用相同资源及相同导频循环移位时的反馈问题。不同UE使用相同资源及相同导频循环移位时，反馈资源重叠，无法区分UE。当不同UE选择相同资源并且使用相同导频循环移位时，发生冲突时的几种情况如下：
发生冲突无法解出，基站不反馈，此时所有UE均发送失败；
发生冲突两个都能解出的情况不可能发生，此时，时频资源、导频循环移位都相同，基站相当于认为只有一个UE的数据；
发生冲突解出其中之一，具体而言，一种情况为基站解出其中一个UE的数据和标识信息，此时基站向解调出的UE发送ACK消息，由于反馈资源重叠，其它发送失败的UE也会收到ACK消息，即不该收到ACK消息的UE也收到了ACK消息；或者，基站仅解出其中一个UE的标识信息，此时基站向解调出的UE发送NACK消息，由于反馈资源重叠，其它UE也会收到NACK消息。
可见，在相关技术中，当不同UE使用相同资源及相同导频循环移位时，基站无法将反馈消息准确发送至正确的UE。
发明内容
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。
本发明实施例提供一种反馈传输方法及装置，能够实现不同UE使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的UE。
本发明实施例提供一种反馈传输方法，包括：基站确定与终端上行传输所对应的反馈信息和承载所述反馈信息的资源，其中，所述反馈信息和/或承载所述反馈信息的资源由基站至少根据终端标识信息确定；基站通过承载反馈信息的资源传输反馈信息至终端。
本发明实施例还提供一种反馈传输方法，包括：终端至少根据终端标识信息确定承载基站对于上行传输的反馈信息的资源；终端通过所述资源从基站接收反馈信息。
本发明实施例还提供一种反馈传输装置，应用于基站，包括：处理模块，设置为确定与终端上行传输所对应的反馈信息和承载所述反馈信息的资源，其中，所述反馈信息和/或承载所述反馈信息的资源至少根据终端标识信息确定；传输模块，设置为通过承载反馈信息的资源传输反馈信息至终端。
本发明实施例还提供一种反馈传输装置，应用于终端，包括：处理模块，设置为至少根据终端标识信息确定承载基站对于上行传输的反馈信息的资源；接收模块，设置为通过所述资源从基站接收反馈信息。
在本发明实施例中，基站确定与终端上行传输所对应的反馈信息和承载所述反馈信息的资源，其中，所述反馈信息和/或承载所述反馈信息的资源由基站至少根据终端标识信息确定；基站通过承载反馈信息的资源传输反馈信息至终端。如此，通过本发明实施例能够实现不同UE使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的UE，从而保证终端在使用基于竞争方式的上行数据传输时获得正确的反馈信息。
在阅读并理解了附图和详细描述后，可以明白其他方面。
附图概述
图1为相关LTE/LTE-A系统中上行数据传输信令过程示意图；
图2为相关基于竞争方式的上行传输过程示意图；
图3为本发明实施例提供的反馈传输方法的流程图；
图4为本发明实施例提供的反馈传输方法的流程图；
图5为本发明实施例提供的应用于基站的反馈传输装置结构示意图；
图6为本发明实施例提供的应用于终端的反馈传输装置结构示意图。
本发明的实施方式
以下结合附图对本发明的实施例进行详细说明，应当理解，以下所说明的实施例仅用于说明和解释本发明，并不用于限定本发明。
图3为本发明实施例提供的反馈传输方法的流程图。如图3所示，本实施例提供的反馈传输方法包括以下步骤：
步骤11：基站确定与终端上行传输所对应的反馈信息和承载所述反馈信息的资源，其中，所述反馈信息和/或承载所述反馈信息的资源由基站至少根据终端标识信息确定。
其中，终端标识信息包括以下任一种或任几种：小区无线网络临时标识(C-RNTI)、终端标识(UE ID)、调度请求(SR)索引、高层信令配置的使用竞争资源的终端的标识信息、根据资源位置信息得到的终端标识信息(例如，由资源位置信息通过隐含方式携带或得到)。其中，资源位置信息包括以下任一种或任几种：物理资源块(PRB，Physical Resource Block)索引、导频循环移位、竞争资源位置索引。
可选的，反馈信息和/或承载反馈信息的资源的确定因素除了终端标识信息以外，还包括资源位置、导频循环移位、反馈资源总数量等。终端标识信息是一种可以区分不同终端的信息，即不同终端的终端标识信息不同。通常所使用的终端标识信息有C-RNTI和UE ID，对于基于竞争方式进行上行传输时，引入了一种新的终端标识信息，即高层信令(系统信息块(SIB，System Information Block)或无线资源控制(RRC，Radio Resource Control))配置的使用竞争资源的终端的标识信息，即该标识信息针对的是使用竞争资源的终端。
其中，UE ID包括：国际移动用户识别码(IMSI，International Mobile Subscriber Identification Number)、国际移动设备识别码(IMEI，International  Mobile Equipment Identification Number)、移动用户识别号码(MSIN，Mobile Subscriber Identification Number)、全球唯一临时UE标识(GUTI，Globally Unique Temporary UE Identity)、临时UE识别号(TMSI，Temporary Mobile Subscriber Identity)、SAE临时UE识别号(S-TMSI，SAE-Temporary Mobile Subscriber Identity)、MME临时用户标识(M-TMSI，MME-Temporary Mobile Subscriber Identity)。其中，IMSI为区别移动用户的标志，储存在客户识别模块(SIM，Subscriber Identity Module)卡中，是用于移动通信网区别移动用户的有效信息，其总长度不超过15位，使用0～9的数字。M-TMSI用于唯一识别移动管理实体(MME，Mobility Management Entity)中的UE。
于此，高层信令配置的使用竞争资源的终端的标识信息(后续简称为CB_UE ID)的比特(bit)数小于C-RNTI的比特数。其中，所述竞争资源包括以下任一种：全部竞争资源、以预定资源颗粒度划分竞争资源后其中的至少一份竞争资源。需要说明的是，本发明实施例中提及的比特数亦可采用大小(size)或位数表示同等含义。
可选的，高层信令配置的使用竞争资源的终端的标识信息由于仅针对使用竞争资源的终端，对于所使用的竞争资源的具体情况可以进一步细分，以一定资源颗粒度划分竞争资源，由高层信令配置所有竞争资源或划分竞争资源后的其中一份或若干份上的终端的标识信息。高层信令配置使用竞争资源的终端的标识信息区别于所有终端都使用的标识信息(如C-RNTI、UE ID)，因此，高层信令配置的使用竞争资源的终端的标识信息CB_UE ID的比特数较小，不仅小于C-RNTI的比特数，也小于UE ID的比特数。例如，高层信令配置的使用全部竞争资源的终端的标识信息表示所有N1个终端，则CB_UE ID的比特数为
Figure PCTCN2016089918-appb-000001
位(bits)，其中，
Figure PCTCN2016089918-appb-000002
表示向上取整，例如当N1＝100时，CB_UE ID的比特数为7bits；高层信令配置的以一定资源颗粒度划分竞争资源后使用其中的一份竞争资源的终端的标识信息表示使用这一份竞争资源中的N2个终端，则CB_UE ID的比特数为
Figure PCTCN2016089918-appb-000003
bits，如当N2＝10时，CB_UE ID的比特数为4bits；高层信令配置的以一定资源颗粒度划分竞争资源后使用其中的多份竞争资源的终端的标识信息表示使用该多份竞争资源中的N3个终端，则CB_UE ID的比特数为
Figure PCTCN2016089918-appb-000004
bits，如当N3＝30时， CB_UE ID的比特数为5bits。
于此，根据资源位置信息得到的终端标识信息的比特数与高层信令配置的使用竞争资源的终端的标识信息的比特数相同。
可选的，基站(或终端)可以根据资源位置信息得到终端标识信息，如根据PRB索引、导频循环移位、竞争资源位置索引信息中的一个或多个隐含得到终端标识信息，而不需要额外使用高层信令配置使用竞争资源的终端的标识信息。例如，根据竞争资源位置索引(以一定资源颗粒度划分竞争资源后重新对竞争资源进行编号，得到各个竞争资源位置索引)、PRB索引以及导频循环移位中的至少一个得到终端标识信息，该终端标识信息的比特数与上述CB_UE ID的比特数相同。
于此，基站至少根据终端标识信息确定承载反馈信息的资源包括：基站至少根据终端标识信息确定承载反馈信息的物理混合自动重传请求指示信道(PHICH，Physical Hybrid ARQ Indicator Channel)资源。可选的，在计算PHICH资源位置时，至少使用终端标识信息得到具体的PHICH资源位置。
其中，基站至少根据终端标识信息确定承载反馈信息的PHICH资源包括：基站至少根据终端标识信息区分承载反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号(下文简称为组内序号)。
于此，基站至少根据终端标识信息区分承载反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号，之前，该方法还包括：基站根据固定配置、预定义配置或高层信令配置(例如显示通知或隐含通知)，获知至少根据终端标识信息区分承载反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号。
其中，基站根据高层信令配置，获知至少根据终端标识信息区分承载反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号，包括：基站根据系统带宽中下行总资源块数目
Figure PCTCN2016089918-appb-000005
和PHICH组数量调节因子Ng，获知至少根据终端标识信息区分承载反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号。
可选的，PHICH资源由
Figure PCTCN2016089918-appb-000006
定义，如式(1)所示。其中，
Figure PCTCN2016089918-appb-000007
是PHICH组号，
Figure PCTCN2016089918-appb-000008
是组内序号，
Figure PCTCN2016089918-appb-000009
是上行资源分配中编号最低的PRB索引，nDMRS是上行数据传输中导频循环移位索引，
Figure PCTCN2016089918-appb-000010
是PHICH调制时使用的扩频因子。
Figure PCTCN2016089918-appb-000011
是PHICH组号总数目，其计算如式(2)所示，其中，Ng为PHICH组数量调节因子，由高层信令配置的决定，
Figure PCTCN2016089918-appb-000012
为系统带宽中下行总资源块(RB，Resource Block)数目，与系统带宽有关。IPHICH取值如式(3)所示。
Figure PCTCN2016089918-appb-000013
表示向下取整，
Figure PCTCN2016089918-appb-000014
表示向上取整，mod表示取模函数。
Figure PCTCN2016089918-appb-000015
Figure PCTCN2016089918-appb-000016
Figure PCTCN2016089918-appb-000017
可选的，以终端标识信息为C-RNTI为例，由于PRB索引和解调参考信息(DMRS，Demodulation Reference Signal)都一样，因此，通过C-RNTI增强PHICH组号和/或组内序号以进行区分。其中，通过C-RNTI增强的PHICH组号如根据式(4)确定，通过C-RNTI增强的组内序号如根据式(5)确定。
Figure PCTCN2016089918-appb-000018
Figure PCTCN2016089918-appb-000019
其中，nC-RNTI表示C-RNTI的取值，当终端标识信息为其他信息时，使用其他变量替换nC-RNTI，表示相应的终端标识信息的取值。
于一实施例中，选择PHICH组号和组内序号中数目较大的一个通过终端标识信息进行增强。由于PHICH组号的范围由高层信令配置的Ng决定，而Ng的取值范围为{1/6、1/2、1、2}，PHICH组号同时与
Figure PCTCN2016089918-appb-000020
有关，表1所示PHICH组号取值上限
Figure PCTCN2016089918-appb-000021
PHICH组号取值为0至
Figure PCTCN2016089918-appb-000022
组内序号的范围由扩频因子
Figure PCTCN2016089918-appb-000023
决定，
Figure PCTCN2016089918-appb-000024
在标准(Normal)循环前缀(CP，Cyclic Prefix)时取值为4，即组内序号取值范围为0至7。
表1PHICH组号上限取值
Figure PCTCN2016089918-appb-000025
Figure PCTCN2016089918-appb-000026
表1中斜线条为分界线，分界线右侧为PHICH组号数目多于组内序号数目，分界线左侧(含分界线)为组内序号数目多于PHICH组号数目。
因此，在PHICH组号数目多于组内序号数目时，优先仅通过C-RNTI增强PHICH组号数目，组内序号不做改动；基站和终端根据
Figure PCTCN2016089918-appb-000027
和Ng可以做出判断，基站先决定PHICH资源确定方式，终端根据基站通知的
Figure PCTCN2016089918-appb-000028
和Ng也可以判断出PHICH资源确定方式(于此，属于高层信令隐含通知方式)。此时，PHICH资源确定如下：
Figure PCTCN2016089918-appb-000029
Figure PCTCN2016089918-appb-000030
在组内序号数目多于PHICH组号数目时，优先仅通过C-RNTI增强组内序号数目，PHICH组号不做改动；基站和终端根据
Figure PCTCN2016089918-appb-000031
和Ng可以做出判断，基站先决定PHICH资源确定方式，终端根据基站通知的
Figure PCTCN2016089918-appb-000032
和Ng也可以判断出PHICH资源确定方式(于此，属于高层信令隐含通知方式)。此时，PHICH资源确定如下：
Figure PCTCN2016089918-appb-000033
Figure PCTCN2016089918-appb-000034
可选地，在PHICH组号数目与组内序号数目接近时(如表1中的分界线)，可以同时使用C-RNTI增强PHICH组号和组内序号，或仅增强其中之一。
除了上述实施例外，还可以根据固定配置、预定义配置或高层信令配置(显示通知)获知区分PHICH组号和/或组内序号时使用终端标识信息进行 增强。
除了上述可选实施外以及通过固定配置、预定义配置或高层信令配置(显示通知)获知区分PHICH组号和/或组内序号时使用终端标识信息进行增强以外，还可以通过资源位置信息隐含得到终端标识信息，且其比特数与使用高层信令配置的使用竞争资源的终端的标识信息的比特数相同，以获知使用终端标识信息区分PHICH组号和/或组内序号。
可选的，PHICH资源确定时，PHICH组号和/或组内序号可以只与终端标识信息有关。即此时确定PHICH组号和组内序号时与PRB资源索引和导频循环移位无关，计算表达式如下：
Figure PCTCN2016089918-appb-000035
Figure PCTCN2016089918-appb-000036
可选的，PHICH资源确定时，PHICH组号和/或组内序号可以只与终端标识信息和导频循环移位有关。即此时确定PHICH组号和组内序号时与PRB资源索引无关，计算表达式如下：
Figure PCTCN2016089918-appb-000037
Figure PCTCN2016089918-appb-000038
其中，上述表达式中每个符号的说明同式(1)，故于此不再赘述。
其中，可选PHICH组号和组内序号中数目较大的一个通过终端标识信息进行增强，可以区分使用相同时频资源及相同导频循环移位的不同UE，进而不同UE根据各自的终端标识信息(如C-RNTI)在不同的PHICH资源上解调来自基站的反馈信息。
于此，所确定的PHICH资源为总PHICH资源中除传统(legacy)UE或非竞争传输终端所使用的PHICH资源以外的资源。
可选的，对于式(4)和式(5)，还需要考虑与legacy UE的资源冲突的问题，可选方式为直接区分PHICH资源，所确定的PHICH资源为总PHICH资源中除legacy UE或非竞争传输终端所使用的PHICH资源以外的资源，即将一组PHICH组号和/或组内序号留给基于竞争方式传输的UE使用，例如可以称之为ePHICH资源区域。另外，还可以考虑使用新的PHICH资源区域承 载多个终端的ACK/NACK信息，通过ACK/NACK信息的位置顺序区分各个使用竞争方式进行上行数据传输的终端。
于此，基站至少根据终端标识信息确定与终端上行传输所对应的反馈信息，且所述反馈信息通过PHICH资源传输。其中，所述反馈信息包括：反馈上行数据传输的正确和/或错误信息(即ACK/NACK信息)以及终端标识信息；或者，使用终端标识信息进行加扰序列初始化处理后的ACK/NACK信息。
于一实施例中，ACK/NACK信息通过终端标识信息进行加扰序列初始化。可选的，PHICH信道承载内容(如ACK/NACK信息)调制符号扩频时在乘以正交序列的同时还进行加扰
Figure PCTCN2016089918-appb-000039
其中，d(i)为PHICH信道中复值调制符号经过扩频后的调制符号，w(i)为用于PHICH调制过程的正交序列，z(i)为PHICH信道中比特块经过星座调制后的复值调制符号，c(i)为加扰序列，且加扰序列初始值的计算涉及终端标识信息，以C-RNTI为例，其中，ns为时隙号，
Figure PCTCN2016089918-appb-000041
为小区标识号；nRNTI为C-RNTI的取值；以CB_UE ID为例，取值表示为
Figure PCTCN2016089918-appb-000042
或nCB_UE ID，加扰序列初始化值为：
Figure PCTCN2016089918-appb-000043
或者，
Figure PCTCN2016089918-appb-000044
其中，加扰参数中引入终端标识信息后可以保证相同时频资源、相同组号及组内序号的不同UE中，只有终端标识信息(如C-RNTI)正确的UE才能解调出属于自己的反馈信息。
于一实施例中，所述PHICH资源承载的反馈信息包含ACK/NACK信息及终端标识信息。
可选的，在原有的ACK/NACK信息基础上，增加终端标识信息。例如，使用1bit的ACK/NACK+16bit的C-RNTI作为ACK传输的信源，信道编码为24bit，采用正交相移键控(QPSK，Quadrature Phase Shift Keying)调制映射至12资源单位(RE，Resource Element)，对应至PHICH占用的3资源单位组(REG，Resource Element Group)，且与legacy PHICH资源不共用； 或者，使用CB_UE ID来降低码率，CB_UE ID的比特数比C-RNTI的比特数小。
其中，反馈信息中引入终端标识信息后，可以保证相同时频资源、相同组号及组内序号的不同UE中，只有终端标识信息(如C-RNTI)正确的UE才能解调出属于自己的反馈信息。
于此，基站至少根据终端标识信息确定反馈信息的资源包括：基站至少根据终端标识信息确定承载反馈信息的上行授权信息。即，反馈信息通过上行授权信息(UL grant)传输，其中，反馈信息包括ACK/NACK信息和终端标识信息。其中，ACK/NACK信息可以是一个或多个UE的反馈。终端标识信息至少包括以下任一项：C-RNTI、基站(eNB)根据资源位置信息得到的终端标识信息(例如，通过隐含方式得到)。资源位置信息包括以下任一种或任几种：PRB索引、导频循环移位、竞争资源位置索引。
可选的，反馈信息不使用PHICH承载，而使用UL grant代替PHICH发送反馈信息。例如，UL grant仅传输反馈信息。终端标识信息以C-RNTI为例，反馈信息至少包含ACK/NACK信息和终端标识信息(如RNTI值、根据资源位置信息隐含得到的终端标识信息)。其中，资源位置信息包括：PRB索引、导频循环移位、竞争资源位置索引。其中，ACK/NACK信息作为独立信源。终端标识信息可以作为独立信源，或者作为UL grant中循环冗余校验码(CRC，Cyclic Redundancy Check)的加扰序列，此时UL grant的大小(size)(即，UL grant含有的比特数目)远小于相关UL grant的size，可以触发终止传输或重传。或者，UL grant除了包含反馈信息以外也包含上行数据的调度信息，即，此时基站对于该终端不再使用基于竞争方式的上行数据传输方式，改用调度方式。另外，终端标识信息还可以是UE ID或CB_UEID，即，此时UL grant的size可以与相关UL grant的size相同或不同，可以触发重传或传输新的数据包。另外，还可以使用UL grant承载多个终端的ACK/NACK信息，通过ACK/NACK信息的位置顺序区分各个使用竞争方式进行上行数据传输的终端。
于一实施例中，反馈信息仅包括针对至少一个终端上行数据传输反馈的ACK信息。即UL grant仅包括ACK信息，不传输NACK信息。
可选的，此时传输表示ACK信息的UL grant的size可以小于相关ULgrant的size，或两者相同，用于表示ACK信息的同时继续触发下一个上行新数据包的传输，此时，所述UL Grant至少表示新数据包资源位置、调制方式、传输功率控制(TPC，Transmission Power Control)；或者，此时，传输表示ACK信息的UL grant的size可以小于相关UL grant的size，用于表示ACK信息且终止传输。
于此，使用至少包含反馈信息(如ACK/NACK信息和终端标识信息)的UL grant代替PHICH可以做到唯一识别终端，保证使用相同时频资源及相同导频循环移位的不同UE中，只有终端标识信息正确的UE才能解调出属于自己的反馈信息。
步骤12：基站通过承载反馈信息的资源传输反馈信息至终端。
图4为本发明实施例提供的反馈传输方法的流程图。如图4所示，本实施例提供的反馈传输方法包括以下步骤：
步骤21：终端至少根据终端标识信息确定承载基站对于上行传输的反馈信息的资源。
其中，终端标识信息包括以下任一种或任几种：C-RNTI、UE ID、SR索引、高层信令配置的使用竞争资源的终端的标识信息、根据资源位置信息得到的终端标识信息(例如，由资源位置信息通过隐含方式携带或得到)；资源位置信息包括以下任一种或任几种：PRB索引、导频循环移位、竞争资源位置索引。关于终端标识信息的具体描述同上一实施例所述，故于此不再赘述。
于此，于步骤21之前，该方法还包括：终端根据固定配置、预定义配置或者高层信令配置(如显示通知或隐含通知)，获知至少根据终端标识信息确定承载反馈信息的资源。关于此过程同上一实施例所述，故于此不再赘述。
于步骤21之前，该方法还包括：终端将终端标识信息作为上行控制消息(UCI)信息，与上行数据信息独立编码，一起通过PUSCH承载上行传输至基站。
可选的，终端标识信息的比特(bit)数较少时，可以采用类似UCI信息中的ACK/NACK、秩指示(RI，Rank Indication)、信道质量指示(CQI，Channel Quality Indicator)/预编码矩阵指示(PMI，Precoding Matrix Indicator)信息编码过程；终端标识信息bit数较多时，可以采用类似UCI信息中的CQI/PMI信息编码过程。对于承载于PUSCH的终端标识信息，可能含有较多bit数，类似CQI/PMI信息编码过程，根据bit数大小划分为两种编码流程：(1)终端标识信息bit数<＝X，例如X为11，以基础序列进行编码，得到的编码输出为固定值，如32bit，再循环重复直到达到长度；(2)终端标识信息bit数>X，将CQI/PMI信息以数据的方式进行加CRC、信道编码(channel coding)、速率匹配(Rate matching)处理。最终两者都获得长度相同的bit串。
步骤22：终端通过所述资源从基站接收反馈信息。
于步骤22之后，该方法还包括：终端根据接收到的反馈信息，终止传输、重传旧数据或传输新数据。
可选的，终端根据接收到由PHICH承载的反馈信息，进行终止传输或重传旧数据；根据接收到由与相关size相同或小于相关size的UL grant承载的反馈信息，进行重传旧数据或传输新数据；根据接收到小于相关size的UL grant承载的反馈信息，进行终止传输或重传旧数据。
以下通过多个实施例对本发明进行具体说明。
实施例一
于本实施例中，基站分配使用基于竞争方式的上行数据传输的X(如10)个终端使用Y(如2)个PRB共享资源，X个终端在Y个PRB中随机使用导频循环移位。可选的，基站通过一个组RNTI加扰CRC的UL grant分配Y个PRB的共享资源，X个终端通过组RNTI解扰获得可以使用的Y个PRB，X个终端之间并不知道彼此的存在。
X个终端中的UE1和UE2使用相同循环移位，由于是在同样的时刻同样的Y个PRB共享资源上传输上行数据，基站仅解调出UE1的数据和终端标识信息(如UE1的功率较强，或者UE1的信道条件较好)，相当于UE2透 明传输且基站没有发现UE2。
基站根据UE1的终端标识信息、所使用的PRB资源标号最低的索引以及所使用的导频循环移位，计算承载反馈ACK信息的PHICH资源。此时，由于配置的
Figure PCTCN2016089918-appb-000045
和Ng＝1/2，采用仅对组内序号计算时使用终端标识信息，即
Figure PCTCN2016089918-appb-000046
Figure PCTCN2016089918-appb-000047
其中，关于上述式子中每个符号的说明同上述实施例所述，故于此不再赘述。
终端根据基站通知的
Figure PCTCN2016089918-appb-000048
和Ng也可以隐含判断出PHICH资源确定方式为仅组内序号计算时使用终端标识信息。
UE1在属于自己的PHICH信道资源上接收来自基站的反馈信息，并且该信息UE2无法收到，则UE2认为自己发送失败。
于本实施例中，在基站分配的共享资源中用于有低时延需求的终端进行基于竞争方式的上行数据传输，可选PHICH组号和组内序号中数目较大的一个通过终端标识信息进行增强，可以区分使用相同时频资源及相同导频循环移位的不同UE，进而根据各自的终端标识信息(如C-RNTI)在不同的PHICH资源上接收来自基站的反馈信息。如此，能够实现不同UE使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的UE，从而保证终端在使用基于竞争方式的上行数据传输时获得正确的反馈信息。
实施例二
于本实施例中，基站分配使用基于竞争方式的上行数据传输的X(如100)个终端使用Y(如20)个PRB共享资源，其中Y个PRB以Y1(如4)个PRB为粒度划分为Y2(如5)份资源。可选的，基站通过一个组RNTI加扰CRC的UL grant分配Y1个PRB的共享资源，X1(如20)个终端通过组RNTI解扰获得可以使用的Y1个PRB，并且基站还为每个终端分配了终端标识信息CB_UE ID。X1个终端之间并不知道彼此的存在。X1个终端在Y1个PRB中随机使用导频循环移位。类似的X2个终端在Y2个PRB中随机使用 导频循环移位。
X1个终端中的UE1和UE2使用相同循环移位，由于是在同样的时刻同样的Y1个PRB共享资源上传输上行数据，基站仅解调出UE1的数据和终端标识信息(如UE1的功率较强，或者UE1的信道条件较好)，相当于UE2透明传输且基站没有发现UE2。X2个终端中的UE3也使用了和UE1和UE2相同的循环移位，但是使用的资源不同，是在Y2个PRB共享资源上。基站也解调出了UE3的数据和终端标识信息。
基站根据UE1和UE3的终端标识信息、所使用的PRB资源标号最低的索引以及所使用的导频循环移位，计算承载反馈ACK的PHICH资源。此时由于配置的
Figure PCTCN2016089918-appb-000049
和Ng＝1，采用仅对PHICH组号计算时使用终端标识信息，即
Figure PCTCN2016089918-appb-000051
终端根据基站通知的
Figure PCTCN2016089918-appb-000052
和Ng也可以隐含判断出PHICH资源确定方式为仅PHICH组号计算时使用终端标识信息。
UE1在属于自己的PHICH信道资源上接收来自基站的反馈信息，并且该信息UE2无法收到，UE2认为自己发送失败。UE3在属于自己的PHICH信道资源上接收来自基站的反馈信息。并且无论UE1/UE2和UE3的终端标识信息是否一样，都可以通过PRB资源区分PHICH资源。
在本实施例中，在基站分配的共享资源中用于有低时延需求的终端进行基于竞争方式的上行数据传输，可选PHICH组号和组内序号中数目较大的一个进行通过终端标识信息增强，可以区分使用相同时频资源及相同导频循环移位的不同UE，进而根据各自的终端标识信息(如CB_UE ID)在不同的PHICH资源上接收来自基站的反馈信息。如此，能够实现不同UE使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的UE，从而保证终端在使用基于竞争方式的上行数据传输时获得正确的反馈信息。
实施例三
于本实施例中，基站分配使用基于竞争方式的上行数据传输的X(如10) 个终端使用Y(如10)个PRB共享资源，X个终端在Y个PRB中随机使用导频循环移位。可选的，基站通过一个组RNTI加扰CRC的UL grant分配Y个PRB的共享资源，X个终端通过组RNTI解扰获得可以使用的Y个PRB，X个终端之间并不知道彼此的存在。每个终端以Y1(如2)个PRB的粒度使用共享资源。
X个终端中的UE1使用了该共享资源中第2个Y1大小的共享资源，由于无线信道传输的不确定性(小尺度衰落)，基站仅解调出UE1的数据但并未解调出该终端的标识信息(如C-RNTI独立编码传输时，C-RNTI解调错误；或者SR独立发送时，SR解调错误)，此时基站需要反馈ACK。
此时基站根据资源位置信息隐含得到终端标识信息，如根据使用的共享资源Y1的编号确定终端标识信息，如得到CB_UE ID。
基站根据UE1的终端标识信息以及所使用的PRB资源标号最低的索引以及所使用的导频循环移位，计算承载反馈ACK的PHICH资源。此时由于配置的
Figure PCTCN2016089918-appb-000053
和Ng＝1，采用仅对PHICH组号计算时使用终端标识信息，即
Figure PCTCN2016089918-appb-000054
Figure PCTCN2016089918-appb-000055
终端根据基站通知的
Figure PCTCN2016089918-appb-000056
和Ng也可以隐含判断出PHICH资源确定方式为仅PHICH组号计算时使用终端标识信息。
UE1根据资源位置信息隐含得到终端标识信息并且在属于自己的PHICH信道资源上接收来自基站的反馈信息。
通过本实施例，在基站分配的共享资源中用于有低时延需求的终端进行基于竞争方式的上行数据传输，根据资源位置隐含得到终端标识信息，可以区分使用相同时频资源内不同竞争资源的UE，进而根据各自的终端标识信息(如CB_UE ID)在不同的PHICH资源上接收来自基站的反馈信息。如此，能够实现不同UE使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的UE，从而保证终端在使用基于竞争方式的上行数据传输时获得正确的反馈信息。
实施例四
于本实施例中，基站分配使用基于竞争方式的上行数据传输的X(如10)个终端使用Y(如2)个PRB共享资源，X个终端在Y个PRB中随机使用导频循环移位。可选的，基站通过一个组RNTI加扰CRC的UL grant分配Y个PRB的共享资源，X个终端通过组RNTI解扰获得可以使用的Y个PRB，基站还为X个终端分配了终端标识信息CB_UE ID以及配置了第二反馈资源(使用相同循环移位和相同共享资源对应相同的第二反馈资源)，X个终端之间并不知道彼此的存在。
X个终端中的UE1和UE2使用相同循环移位，由于是在同样的时刻同样的Y个PRB共享资源上传输上行数据，基站仅解调出UE1的数据和终端标识信息(如UE1的功率较强，或者UE1的信道条件较好)，相当于UE2透明传输且基站没有发现UE2。
基站根据UE1的终端标识信息确定反馈信息，根据所使用的PRB资源标号最低的索引以及所使用的导频循环移位，计算承载反馈ACK的PHICH资源。此时确定的PHICH反馈资源对于UE1和UE2来说是一样的，都没有使用终端标识信息，即
Figure PCTCN2016089918-appb-000057
Figure PCTCN2016089918-appb-000058
但是基站给UE1反馈的ACK信息还增加了终端标识信息CB_UE ID，其中ACK信息与CB_UE ID信息均作为信源发送给终端。编码调制过程不限，例如，使用里德-穆勒(RM，Reed Muller)码或咬尾卷积码(TBCC，tail-biting convolutional code)编码后使用二进制相移键控(BPSK，Binary Phase Shift Keying)或QPSK调制占用12RE，即3REG，与legacy PHICH不共用。即不使用通过PHICH组号和组内序号计算出的legacy PHICH资源。
UE1和UE2在legacy PHICH资源上没有接收来自基站的反馈信息，在第二反馈资源上收到来自基站的反馈信息，经过解码结合终端标识信息确认，该反馈ACK信息是基站发送给UE1的，UE2认为自己发送失败。
通过本实施例，在基站分配的共享资源中用于有低时延需求的终端进行 基于竞争方式的上行数据传输，根据终端标识信息增强反馈信息，可以区分使用相同时频资源及相同导频循环移位的不同UE，进而根据各自的终端标识信息(如CB_UE ID)在相同的PHICH资源上接收来自基站的反馈信息并判断是否是该终端的。如此，能够实现不同UE使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的UE，从而保证终端在使用基于竞争方式的上行数据传输时获得正确的反馈信息。
实施例五
于本实施例中，基站分配使用基于竞争方式的上行数据传输的X(如10)个终端使用Y(如2)个PRB共享资源，X个终端在Y个PRB中随机使用导频循环移位。可选的，基站通过一个组RNTI加扰CRC的UL grant分配Y个PRB的共享资源，X个终端通过组RNTI解扰获得可以使用的Y个PRB，X个终端之间并不知道彼此的存在。
X个终端中的UE1和UE2使用相同循环移位，由于是在同样的时刻同样的Y个PRB共享资源上传输上行数据，基站仅解调出UE1的数据和终端标识信息(如UE1的功率较强，或者UE1的信道条件较好)，相当于UE2透明传输且基站没有发现UE2。
基站通过解调该终端的上行数据信息发现其后续还有低时延需求的数据信息，因此基站根据UE1的终端标识信息使用UL grant反馈ACK并且同时调度其后续数据。
UE1接收来自基站的调度信息，其中含有反馈信息ACK，并且还含有调度后续数据的调度信息。相应地，UE2无法收到该信息，并且在PHICH资源上由于基站没有发送反馈，因此，UE2什么也没有收到，UE2认为自己发送失败。
通过本实施例，在基站分配的共享资源中用于有低时延需求的终端进行基于竞争方式的上行数据传输，基站使用含有反馈信息和终端标识信息以及调度信息的UL grant向终端进行反馈信息的传输，如此，能够实现不同UE使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的UE，从而保证终端在使用基于竞争方式的上行数据传输时获得正确的反馈信息。
实施例六
于本实施例中，基站分配使用基于竞争方式的上行数据传输的X(如10)个终端使用Y(如10)个PRB共享资源，X个终端在Y个PRB中随机使用导频循环移位。可选的，基站通过一个组RNTI加扰CRC的UL grant分配Y个PRB的共享资源，X个终端通过组RNTI解扰获得可以使用的Y个PRB，X个终端之间并不知道彼此的存在。每个终端以Y1(如2)个PRB的粒度使用共享资源。
X个终端中的UE1使用了该共享资源中第2个Y1大小的共享资源，并且仅是所要传输的上行数据中的第一个数据包，由于无线信道传输的不确定性(小尺度衰落)，基站仅解调出UE1的数据但并未解调出该终端的标识信息(如C-RNTI独立编码传输时，C-RNTI解调错误；或者SR独立发送时，SR解调错误)，此时基站需要反馈ACK。
基站通过解调该终端的上行数据信息发现其后续还有低时延需求的数据信息，因此，基站根据UE1的终端标识信息加扰CRC，使用UL grant反馈ACK并且同时调度其后续数据。此时，基站根据资源位置信息隐含得到终端标识信息，如根据使用的共享资源Y1的编号确定终端标识信息，如得到CB_UE ID。
UE1接收来自基站的调度信息，终端根据自己使用的共享资源Y1的编号，隐含得到终端标识信息，解调出UL grant，其中含有反馈信息ACK，并且还含有调度后续数据的调度信息。
通过本实施例，在基站分配的共享资源中用于有低时延需求的终端进行基于竞争方式的上行数据传输，基站使用含有反馈信息、根据资源位置隐含得到的终端标识信息以及调度信息的UL grant向终端传输反馈信息，如此，能够实现不同UE使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的UE，从而保证终端在使用基于竞争方式的上行数据传输时获得正确的反馈信息及调度信息。
此外，本发明实施例还提供一种反馈传输装置，应用于基站，如图5所示，包括：处理模块，设置为确定与终端上行传输所对应的反馈信息和承载所述反馈信息的资源，其中，所述反馈信息和/或承载所述反馈信息的资源至 少根据终端标识信息确定；传输模块，设置为通过承载反馈信息的资源传输所述反馈信息至终端。
其中，终端标识信息包括以下任一种或任几种：C-RNTI、UE ID、SR索引、高层信令配置的使用竞争资源的终端的标识信息、根据资源位置信息得到的终端标识信息。资源位置信息包括以下任一种或任几种：PRB索引、导频循环移位、竞争资源位置索引。
于一实施例中，处理模块，是设置为通过如下方式实现至少根据终端标识信息确定承载反馈信息的资源：至少根据终端标识信息确定承载反馈信息的PHICH资源。其中，反馈信息包括：
终端标识信息以及反馈上行数据传输的ACK和/或NACK信息；或者，
使用终端标识信息进行加扰序列初始化处理后的反馈上行数据传输的ACK和/或NACK信息。
于一实施例中，处理模块，是设置为通过如下方式实现至少根据终端标识信息确定承载反馈信息的资源：至少根据终端标识信息确定承载反馈信息的上行授权信息。其中，反馈信息包括：终端标识信息以及针对至少一个终端上行数据传输反馈的ACK和/或NACK信息，其中，终端标识信息至少包括以下任一种：C-RNTI、基站eNB根据资源位置信息得到的终端标识信息，其中，资源位置信息包括以下任一种或任几种：PRB索引、导频循环移位、竞争资源位置索引。
此外，本发明实施例还提供一种反馈传输装置，应用于终端，如图6所示，包括：处理模块，设置为至少根据终端标识信息确定承载基站对于上行传输的反馈信息的资源；接收模块，设置为通过所述资源从基站接收反馈信息。
其中，终端标识信息包括以下任一种或任几种：C-RNTI、UE ID、SR索引、高层信令配置的使用竞争资源的终端的标识信息、根据资源位置信息得到的终端标识信息。资源位置信息包括以下任一种或任几种：PRB索引、导频循环移位、竞争资源位置索引。
于一实施例中，处理模块，还设置为根据接收到的反馈信息，终止传 输、重传旧数据或传输新数据。
于一实施例中，该装置还包括：发送模块，设置为将终端标识信息作为UCI信息，与上行数据信息独立编码，一起通过PUSCH承载上行传输至基站。
于一实施例中，处理模块，还设置为：根据固定配置、预定义配置或者高层信令配置，获知至少根据终端标识信息确定承载反馈信息的资源。
此外，关于上述装置的具体处理流程同上述方法所述，故于此不再赘述。
本发明实施例还提供了一种计算机存储介质，所述计算机存储介质中存储有计算机可执行指令，所述计算机可执行指令用于执行上述实施例所述的方法。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序来指令相关硬件(例如处理器)完成，所述程序可以存储于计算机可读存储介质中，如只读存储器、磁盘或光盘等。可选地，上述实施例的全部或部分步骤也可以使用一个或多个集成电路来实现。相应地，上述实施例中的各模块/单元可以采用硬件的形式实现，例如通过集成电路来实现其相应功能，也可以采用软件功能模块的形式实现，例如通过处理器执行存储于存储器中的程序/指令来实现其相应功能。本发明不限制于任何特定形式的硬件和软件的结合。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。
工业实用性
上述技术方案能够实现不同终端使用相同资源及相同导频循环移位时，基站将反馈消息准确发送至正确的终端，从而保证终端在使用基于竞争方式的上行数据传输时获得正确的反馈信息。

Claims (31)

  1. 一种反馈传输方法，包括：
    基站确定与终端上行传输所对应的反馈信息和承载所述反馈信息的资源，其中，所述反馈信息和/或承载所述反馈信息的资源由基站至少根据终端标识信息确定；
    所述基站通过承载所述反馈信息的资源传输所述反馈信息至终端。
  2. 如权利要求1所述的方法，其中，所述终端标识信息包括以下任一种或任几种：小区无线网络临时标识C-RNTI、终端标识UE ID、调度请求SR索引、高层信令配置的使用竞争资源的终端的标识信息、根据资源位置信息得到的终端标识信息；
    所述资源位置信息包括以下任一种或任几种：物理资源块PRB索引、导频循环移位、竞争资源位置索引。
  3. 如权利要求2所述的方法，其中，所述高层信令配置的使用竞争资源的终端的标识信息的比特bit数小于C-RNTI的比特数，其中，所述竞争资源包括以下任一种：全部竞争资源、以预定资源颗粒度划分竞争资源后其中的至少一份竞争资源。
  4. 如权利要求3所述的方法，其中，所述根据资源位置信息得到的终端标识信息的比特数与所述高层信令配置的使用竞争资源的终端的标识信息的比特数相同。
  5. 如权利要求2所述的方法，其中，所述基站至少根据终端标识信息确定承载所述反馈信息的资源包括：所述基站至少根据终端标识信息确定承载所述反馈信息的物理混合自动重传请求指示信道PHICH资源。
  6. 如权利要求5所述的方法，其中，所述基站至少根据终端标识信息确定承载所述反馈信息的PHICH资源包括：所述基站至少根据终端标识信息区分承载所述反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号。
  7. 如权利要求6所述的方法，该方法还包括：所述基站至少根据终端 标识信息区分承载所述反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号之前，所述基站根据固定配置、预定义配置或高层信令配置，获知至少根据终端标识信息区分承载所述反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号。
  8. 如权利要求7所述的方法，其中，所述基站根据高层信令配置，获知至少根据终端标识信息区分承载所述反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号，包括：所述基站根据系统带宽中下行总资源块RB数目
    Figure PCTCN2016089918-appb-100001
    和PHICH组数量调节因子Ng，获知至少根据终端标识信息区分承载所述反馈信息的PHICH资源的以下至少一项：PHICH组号、组内正交序列索引号。
  9. 如权利要求8所述的方法，其中，当所述基站根据
    Figure PCTCN2016089918-appb-100002
    和Ng判断出PHICH组号数目多于组内正交序列索引号数目时，PHICH组号和组内正交序列索引号分别为：
    Figure PCTCN2016089918-appb-100003
    Figure PCTCN2016089918-appb-100004
    其中，
    Figure PCTCN2016089918-appb-100005
    为PHICH组号，
    Figure PCTCN2016089918-appb-100006
    为组内正交序列索引号，
    Figure PCTCN2016089918-appb-100007
    为上行资源分配中编号最低的物理资源块PRB索引，nDMRS为上行数据传输中导频循环移位索引，nC-RNTI为C-RNTI的取值，
    Figure PCTCN2016089918-appb-100008
    为PHICH组号总数目，
    Figure PCTCN2016089918-appb-100009
    为PHICH调制时使用的扩频因子，IPHICH的取值为0或1，
    Figure PCTCN2016089918-appb-100010
    表示向下取整。
  10. 如权利要求8所述的方法，其中，当所述基站根据
    Figure PCTCN2016089918-appb-100011
    和Ng判断出组内正交序列索引号数目多于PHICH组号数目时，PHICH组号和组内正交序列索引号分别为：
    Figure PCTCN2016089918-appb-100012
    Figure PCTCN2016089918-appb-100013
    其中，
    Figure PCTCN2016089918-appb-100014
    为PHICH组号，
    Figure PCTCN2016089918-appb-100015
    为组内正交序列索引号，
    Figure PCTCN2016089918-appb-100016
    为上行资源分配中编号最低的物理资源块PRB索引，nDMRS为上行数据传输 中导频循环移位索引，nC-RNTI为C-RNTI的取值，
    Figure PCTCN2016089918-appb-100017
    为PHICH组号总数目，
    Figure PCTCN2016089918-appb-100018
    为PHICH调制时使用的扩频因子，IPHICH的取值为0或1，
    Figure PCTCN2016089918-appb-100019
    表示向下取整。
  11. 如权利要求5所述的方法，其中，所确定的PHICH资源为总PHICH资源中除传统legacy终端或非竞争传输终端所使用的PHICH资源以外的资源。
  12. 如权利要求5所述的方法，其中，所述反馈信息包括：
    终端标识信息以及反馈上行数据传输的正确ACK和/或错误NACK信息；或者，
    使用终端标识信息进行加扰序列初始化处理后的反馈上行数据传输的ACK和/或NACK信息。
  13. 如权利要求2所述的方法，其中，所述基站至少根据终端标识信息确定承载所述反馈信息的资源包括：
    所述基站至少根据终端标识信息确定承载所述反馈信息的上行授权信息。
  14. 如权利要求13所述的方法，其中，所述反馈信息包括：
    终端标识信息以及针对至少一个终端上行数据传输反馈的正确ACK和/或错误NACK信息，其中，终端标识信息至少包括以下任一种：C-RNTI、基站eNB根据资源位置信息得到的终端标识信息，其中，资源位置信息包括以下任一种或任几种：PRB索引、导频循环移位、竞争资源位置索引。
  15. 如权利要求13所述的方法，其中，所述反馈信息仅包括针对至少一个终端上行数据传输反馈的ACK信息。
  16. 一种反馈传输方法，包括：
    终端至少根据终端标识信息确定承载基站对于上行传输的反馈信息的资源；
    所述终端通过所述资源从所述基站接收所述反馈信息。
  17. 如权利要求16所述的方法，其中，所述终端标识信息包括以下任 一种或任几种：小区无线网络临时标识C-RNTI、终端标识UE ID、调度请求SR索引、高层信令配置的使用竞争资源的终端的标识信息、根据资源位置信息得到的终端标识信息；所述资源位置信息包括以下任一种或任几种：物理资源块PRB索引、导频循环移位、竞争资源位置索引。
  18. 如权利要求17所述的方法，还包括：所述终端通过所述资源从所述基站接收所述反馈信息之后，所述终端根据接收到的反馈信息，终止传输、重传旧数据或传输新数据。
  19. 如权利要求17所述的方法，还包括：所述终端至少根据终端标识信息确定承载基站对于上行传输的反馈信息的资源之前，终端将终端标识信息作为上行控制消息UCI信息，与上行数据信息独立编码，一起通过物理上行业务信道PUSCH承载上行传输至基站。
  20. 如权利要求17所述的方法，还包括：所述终端至少根据终端标识信息确定承载基站对于上行传输的反馈信息的资源之前，所述终端根据固定配置、预定义配置或者高层信令配置，获知至少根据终端标识信息确定承载所述反馈信息的资源。
  21. 一种反馈传输装置，应用于基站，包括：
    处理模块，设置为确定与终端上行传输所对应的反馈信息和承载所述反馈信息的资源，其中，所述反馈信息和/或承载所述反馈信息的资源至少根据终端标识信息确定；
    传输模块，设置为通过承载所述反馈信息的资源传输所述反馈信息至终端。
  22. 如权利要求21所述的装置，其中，所述终端标识信息包括以下任一种或任几种：小区无线网络临时标识C-RNTI、终端标识UE ID、调度请求SR索引、高层信令配置的使用竞争资源的终端的标识信息、根据资源位置信息得到的终端标识信息；所述资源位置信息包括以下任一种或任几种：物理资源块PRB索引、导频循环移位、竞争资源位置索引。
  23. 如权利要求22所述的装置，其中，所述处理模块，是设置为通过如下方式实现至少根据终端标识信息确定承载所述反馈信息的资源：至少根 据终端标识信息确定承载所述反馈信息的PHICH资源。
  24. 如权利要求23所述的装置，其中，所述反馈信息包括：
    终端标识信息以及反馈上行数据传输的正确ACK和/或错误NACK信息；或者，
    使用终端标识信息进行加扰序列初始化处理后的反馈上行数据传输的ACK和/或NACK信息。
  25. 如权利要求22所述的装置，其中，所述处理模块，是设置为通过如下方式实现至少根据终端标识信息确定承载所述反馈信息的资源：至少根据终端标识信息确定承载所述反馈信息的上行授权信息。
  26. 如权利要求25所述的装置，其中，所述反馈信息包括：
    终端标识信息以及针对至少一个终端上行数据传输反馈的正确ACK和/或错误NACK信息，其中，终端标识信息至少包括以下任一种：C-RNTI、基站eNB根据资源位置信息得到的终端标识信息，其中，资源位置信息包括以下任一种或任几种：PRB索引、导频循环移位、竞争资源位置索引。
  27. 一种反馈传输装置，应用于终端，包括：
    处理模块，设置为至少根据终端标识信息确定承载基站对于上行传输的反馈信息的资源；
    接收模块，设置为通过所述资源从所述基站接收所述反馈信息。
  28. 如权利要求27所述的装置，其中，所述终端标识信息包括以下任一种或任几种：小区无线网络临时标识C-RNTI、终端标识UE ID、调度请求SR索引、高层信令配置的使用竞争资源的终端的标识信息、根据资源位置信息得到的终端标识信息；所述资源位置信息包括以下任一种或任几种：物理资源块PRB索引、导频循环移位、竞争资源位置索引。
  29. 如权利要求28所述的装置，所述处理模块，还设置为根据接收到的反馈信息，终止传输、重传旧数据或传输新数据。
  30. 如权利要求28所述的装置，还包括：发送模块，设置为将终端标识信息作为上行控制消息UCI信息，与上行数据信息独立编码，一起通过物理上行业务信道PUSCH承载上行传输至基站。
  31. 如权利要求28所述的装置，所述处理模块，还设置为：根据固定配置、预定义配置或者高层信令配置，获知至少根据终端标识信息确定承载所述反馈信息的资源。
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CN112887060A (zh) * 2017-12-26 2021-06-01 Oppo广东移动通信有限公司 反馈资源的确定方法、ue、网络设备及计算机存储介质
CN110708144A (zh) * 2018-07-10 2020-01-17 中国移动通信有限公司研究院 一种资源指示方法、装置和存储介质

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