WO2019196888A1 - Procédé et appareil de détermination d'intervalle de temps pour canal de liaison montante physique - Google Patents

Procédé et appareil de détermination d'intervalle de temps pour canal de liaison montante physique Download PDF

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Publication number
WO2019196888A1
WO2019196888A1 PCT/CN2019/082161 CN2019082161W WO2019196888A1 WO 2019196888 A1 WO2019196888 A1 WO 2019196888A1 CN 2019082161 W CN2019082161 W CN 2019082161W WO 2019196888 A1 WO2019196888 A1 WO 2019196888A1
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Prior art keywords
physical uplink
pucch
time
slot
channel
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PCT/CN2019/082161
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English (en)
Chinese (zh)
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苟伟
郝鹏
左志松
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ZTE Corp
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ZTE Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present disclosure relates to the field of communications, for example, to a method and apparatus for determining a time slot of a physical uplink channel.
  • PUCCH physical uplink control channels
  • Orthogonal Frequency Division Multiplexing (OFDM) symbols (described below using symbols) of PUCCH format 0 are 1 to 2, and are used to carry a hybrid automatic repeat request of 1 to 2 bits.
  • the PUCCH format 1 is used to carry 1 to 2 bits of HARQ-ACK information, and the number of OFDM symbols included is greater than or equal to 4, and supports multiplexing between different UEs.
  • the PUCCH format 2 is used to transmit Uplink Control Information (UCI) information greater than 2 bits (this UCI may be in a HARQ-ACK, a Scheduling Request (SR), or a Channel State Information (CSI)). One or more), the number of symbols is 1 to 2, and multiplexing between different UEs is not supported.
  • UCI Uplink Control Information
  • SR Scheduling Request
  • CSI Channel State Information
  • the PUCCH format 3 is used to transmit UCI information greater than 2 bits, and the number of symbols is greater than or equal to four, and does not support multiplexing between different UEs.
  • the PUCCH format 4 is used to transmit UCI information greater than 2 bits, and the number of symbols is greater than or equal to four, and supports multiplexing between different UEs.
  • the PUCCH may be divided into different PUCCH types according to the symbol range of the PUCCH.
  • the number of symbols in the format 0 and the format 2 is 1-2, belonging to the same PUCCH type, and may also be called a short format; formats 1, 3, and 4 The number of symbols is greater than or equal to 4, belonging to the same PUCCH type, and can also be called long format.
  • the UE can only select one SR for transmission. That is, if there are multiple SR requests in multiple SRs, the UE can only send one of the SRs to the base station. So how does the UE send the HARQ-ACK and the selected SR to the base station? How does the base station know which SR request is fed back by the UE?
  • Embodiments of the present disclosure provide a method and apparatus for determining a time slot of a physical uplink channel to overcome the shortcomings of a scheme for determining a time slot for transmitting a physical uplink channel.
  • a method for determining a time slot of a physical uplink channel including: receiving, by a second communication node, configuration information of a first communication node, wherein the configuration information is used to indicate the second communication
  • the node repeatedly transmits the physical uplink channel across the m time slot slots; the second communication node determines the m slots according to one of the following manners: determining whether the physical uplink channel time domain overlap occurs in the slot according to the configuration information ; determining based on the configuration information.
  • a method of transmitting a physical uplink channel comprising: a second communication node receiving second configuration information of a first communication node, wherein the second configuration information is used to indicate The second communication node repeatedly transmits the physical uplink control channel across the W slots, wherein in the one or more slots of the W slots, the repeatedly transmitted physical uplink channel is respectively associated with the Q scheduling requests SR
  • the physical uplink channel has a time domain overlap; the second communication node transmits X bits according to one of the following manners in the one or more slots in which the time domain overlaps, wherein the X bits are used to the first
  • the communication node indicates which of the Q SRs has an SR request: transmitting the X bit in the physical uplink control channel, and puncturing information in the physical uplink control channel, in the punching position Transmitting the X bits; transmitting the X bits in the physical uplink control channel, and matching the X bit rate in information in the physical uplink control channel; Specifically transmitting in the
  • a method for transmitting a physical uplink channel including: determining, by a second communication node, a time domain overlap of a physical uplink control channel PUCCH to be transmitted and a physical uplink shared channel PUSCH; Transmitting, by the second communication node, the uplink control information UCI carried in the PUCCH or the PUCCH on a time-domain overlapping symbol in the PUSCH; or the second communication node is in the PUCCH or the PUCCH
  • the carried uplink control information UCI is transmitted on the symbols in which the time domain overlaps, and the PUSCH in the symbols in the time domain overlap is punctured.
  • a slot determining apparatus for a physical uplink channel including: a first receiving module, configured to receive configuration information of a first communications node, where the configuration information is used to indicate The second communication node repeatedly transmits the physical uplink channel across the m time slot slots; the first determining module is configured to determine the m slots according to one of the following manners: according to the configuration information, whether physical uplink occurs in the slot The channel time domain overlap is determined; the determination is performed according to the configuration information.
  • an apparatus for transmitting a physical uplink channel comprising: a second receiving module, configured to receive second configuration information of a first communication node, wherein the second configuration information is used by Instructing the second communications node to repeatedly transmit a physical uplink control channel across W slots, wherein in the one or more slots of the W slots, the repeatedly transmitted physical uplink channel is respectively associated with Q scheduling
  • the physical uplink channel of the requesting SR has a time domain overlap
  • the first transmission module is configured to transmit X bits according to one of the following manners in the one or more slots in which the time domain overlaps, wherein the X bits are used to Determining, by the first communication node, which SR of the Q SRs has an SR request: transmitting the X bits in the physical uplink control channel, and puncturing information in the physical uplink control channel, where Transmitting the X bits in a puncturing position; transmitting the X bits in the physical uplink control channel, and matching the X bit rate in information in
  • an apparatus for transmitting a physical uplink channel including: a second determining module, configured to determine that a physical uplink control channel PUCCH to be transmitted and a physical uplink shared channel PUSCH occur in a time domain overlap; a second transmission module, configured to transmit the uplink control information UCI carried in the PUCCH or the PUCCH on a symbol in which the time domain overlap occurs in the PUSCH; or, set to be in the PUCCH or the PUCCH
  • the carried uplink control information UCI is transmitted on the symbols in which the time domain overlaps, and the PUSCH in the symbols in the time domain overlap is punctured.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to perform the steps of any one of the method embodiments described above at runtime.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being configured to execute the computer program to perform any of the above The steps in the method embodiments.
  • FIG. 1 is a flowchart of a method for determining a time slot of a physical uplink channel according to an embodiment of the present disclosure
  • FIG. 2 is a structural diagram of a time slot determining apparatus of a physical uplink channel according to a preferred embodiment of the present disclosure.
  • the second communication node may be a terminal, and the first communication node may be a base station side device, but is not limited thereto.
  • a mobile communication network including but not limited to a 5G mobile communication network
  • the network architecture of the network may include a network side device (for example, a base station) and a terminal.
  • a network side device for example, a base station
  • an information transmission method that can be run on the network architecture is provided. It should be noted that the operating environment of the foregoing information transmission method provided in the embodiment of the present application is not limited to the foregoing network architecture.
  • FIG. 1 is a flowchart of a method for determining a time slot of a physical uplink channel according to an embodiment of the present disclosure. As shown in FIG. 1, the process includes : Step S102 and Step S104.
  • step S102 the second communication node receives the configuration information of the first communication node.
  • the configuration information is used to indicate that the second communication node repeatedly transmits the physical uplink channel across m slots.
  • step S104 the second communication node determines the m slots according to one of the following manners: determining whether the physical uplink channel time domain overlap occurs in the slot according to the configuration information; determining according to the configuration information.
  • the physical uplink channel may include a physical uplink control channel and a physical uplink shared channel.
  • the physical uplink control channel may be determined according to the configuration information and whether the physical uplink channel time domain overlap occurs in the time slot.
  • the physical uplink shared channel can be determined according to the configuration information.
  • the second communication node receives the configuration information of the first communication node, where the configuration information is used to indicate that the second communication node repeatedly transmits the physical uplink channel across the m time slots; the second communication node is configured according to the configuration information. And determining whether the physical uplink channel time domain overlap occurs in the time slot to determine the m time slots; or determining according to the configuration information.
  • the execution body of the foregoing steps may be a base station, a terminal, or the like, but is not limited thereto.
  • step S102 and step S104 are interchangeable, that is, step S104 may be performed first, and then S102 is performed.
  • the configuration information when the physical uplink channel is a physical uplink control channel (PUCCH), the configuration information includes at least one of the following: a start slot of the PUCCH; and a start orthogonal frequency division of the PUCCH in the start slot.
  • the OFDM symbol position is multiplexed; the number of OFDM symbols in the PUCCH in the start time slot; the value of m of the PUCCH;
  • the configuration information when the physical uplink channel is the physical uplink shared channel PUSCH, includes at least one of the following: PUSCH The starting time slot; the starting Orthogonal Frequency Division Multiplexing (OFDM) symbol position of the PUSCH in the starting time slot; the number of OFDM symbols in the PUSCH in the starting time slot; the value of m of the PUSCH.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the information that is not included adopts a value agreed in the communication system: a starting time slot of the physical uplink channel; and the physical uplink channel in the starting time slot.
  • the starting Orthogonal Frequency Division Multiplexing (OFDM) OFDM symbol position; the physical uplink channel in the starting time slot is the number of OFDM symbols; the value of m of the physical uplink channel.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the second communication node determines the manner of the m time slots, including: the start time slot of the PUCCH is determined by the configuration information; and the subsequent m-1 times The slot needs to satisfy the condition that the same starting OFDM symbol position in the slot as the PUCCH in the start slot can be used; the number of consecutive OFDM symbols in the slot that allow the PUCCH to be used is greater than or equal to the start The number of consecutive OFDM symbols used by the PUCCH in the slot; when the PUCCH is transmitted in the slot, there is no time domain overlap between all or part of the physical uplink channels transmitted in the slot. It should be added that the subsequent m-1 time slots selected by the second communication node are generally not consecutive m-1 time slots.
  • the m time slots are determined, including: the start time slot of the PUSCH is determined by the configuration information; and the subsequent m-1 time slots need to satisfy at least the following conditions:
  • the Physical Resource Block (PRB) can be used.
  • determining the m time slots includes:
  • the m-1 time slots are consecutive after the start time slot, and the start time slots are a total of the m time slots.
  • a method for transmitting a physical uplink channel including the following steps 1 and 2.
  • the second communication node receives the second configuration information of the first communication node, where the second configuration information is used to indicate that the second communication node repeatedly transmits the physical uplink control channel across the W time slots, where In one or more of the W time slots, the repeatedly transmitted physical uplink channel overlaps with the physical uplink channel occurrence time domain of the Q scheduling request SRs.
  • step 2 the second communication node transmits X bits according to one of the following manners in the one or more time slots in which the time domain overlaps, wherein the X bits are used to indicate the Q bits to the first communication node.
  • the W and the Q are integers greater than or equal to 1, and the values of the Qs are different in different time slots in which the time domain overlaps.
  • Q SRs can be understood as Q channels, or Q PUCCHs.
  • the X bits are transmitted in the physical uplink control channel, and the encoded information of the X bits may be transmitted in the physical uplink control channel.
  • the X-bit rate matching is transmitted in the information in the physical uplink control channel, and the X-bit encoded information rate may be matched to the UCI bit in the physical uplink control channel. The encoded information is transmitted.
  • the defect that the first communication node cannot know which SR request is fed back by the second communication node in the related art is overcome, and the case where multiple SR requests are indicated to the first communication node is realized.
  • the method further comprises at least one of the following:
  • the number of bits of the X bit is or
  • the Q max is the maximum number of SRs that the second communication node can be configured at the same time in the communication system, and the Q is the number of SRs configured by the communication system to the second communication node; or the Q is sometimes in the W time slots.
  • the bit value of the X bit is the SR number of the SR request to be transmitted by the second communication node, or when the Q SRs are all without the SR request, the bit value of the X bit is 0, wherein the SR number is The number of the SR indexes of the Q SRs in ascending or descending order;
  • the reserved resource is determined according to the number of X bits corresponding to the Q max or Q value.
  • the X bits are only sent in the OFDM symbol in which the time domain overlap occurs, or in the symbol of the Demodulation Reference Signal (DMRS) symbol of the physical uplink control channel; or, only in time
  • the puncturing, rate matching, or reserved resources are performed in the OFDM symbols of the domain overlap, or only in the symbols of the decoded reference signal DMRS symbols of the physical uplink control channel.
  • DMRS Demodulation Reference Signal
  • the above-mentioned time domain overlapping OFDM symbols are symbols in time slots in which time domain overlap occurs. Transmitted in the symbol of the DMRS symbol of the decoding reference signal of the physical uplink control channel, it can be described that the DMRS from the physical uplink control channel is transmitted in the nearest symbol.
  • the symbols in the above embodiments may each be an OFDM symbol.
  • the method further comprises: transmitting the DMRS of the physical uplink control channel in a OFDM symbol that is closest to the OFDM symbol in which the time domain overlap occurs or in a single-sided OFDM symbol.
  • the method further includes: transmitting the X bit in the physical uplink control channel in a time slot in which the time slots do not overlap in the W time slots, and matching the X bit rate in the time slot.
  • the information in the physical uplink control channel is transmitted; wherein, in the time slot in which the time domain overlap does not occur, the value of the X bit does not represent the SR number of the SR request, and the value of each bit of the X bit is 1 or 0, the number of bits of X bits is or
  • the method further includes: in the W time slots, starting from a first time slot in which the time domain overlap occurs, and in a subsequent time slot, the X bit is in the physical uplink control channel In transit. It should be added that the subsequent time slots here may be the time slots in all subsequent W time slots.
  • a method of transmitting a physical uplink channel comprising the following steps 1 and 2.
  • step 1 the second communication node determines that the physical uplink control channel PUCCH to be transmitted and the physical uplink shared channel PUSCH occur in time domain overlap.
  • step 2 the second communication node transmits the uplink control information UCI carried in the PUCCH or the PUCCH on a symbol in which the time domain overlaps in the PUSCH;
  • the second communication node transmits the PUCCH or the uplink control information UCI carried in the PUCCH on the symbol in which the time domain overlap occurs, and the PUSCH in the symbol in which the time domain overlap occurs is punctured.
  • the above UCI may include one or more of HARQ-ACK, SR, and channel state information CSI.
  • the PUSCH may not be transmitted when the time domain overlap position occurs.
  • the above technical solution overcomes the defect in the related art that how to transmit the physical uplink channel scheme when the PUCCH and the PUSCH overlap in the time domain.
  • UCI information is transmitted in both time domain overlapping positions.
  • the second communications node transmits the uplink control information UCI carried by the PUCCH on the time-domain overlapping symbol in the PUSCH, including: the second communications node determines a reference for decoding the UCI information.
  • the signal RS; the reference signal RS and the UCI are both transmitted on a symbol in which the time domain overlaps in the PUSCH.
  • the DMRS of the PUSCH or the DMRS of the PUCCH is transmitted in the OFDM symbol closest to the OFDM symbol overlapping the time domain or in the OFDM symbol.
  • the second communication node transmits the PUCCH or the UCI according to one of the following manners in one or more time slots in which the time domain overlap occurs:
  • the UCI or the PUCCH is transmitted in the physical uplink shared channel, and resources are reserved in the physical uplink shared channel, and the encoded information of the UCI is transmitted in the reserved resource.
  • the physical uplink control channel PUCCH format 0 is used to carry 1 to 2 bits of HARQ-ACK, and the HARQ-ACK is ACK or NACK through the configured cyclic sequence CS; if there is a scheduling request transmission at the same time, it is also required to be configured. Corresponding CS is indicated.
  • Table 1 is a 1-bit HARQ-ACK and CS allocation table according to the related art
  • Table 2 is a 2-bit HARQ-ACK and CS allocation table according to the related art
  • Table 3 is a CS allocation table that is transmitted by the 1-bit HARQ-ACK and the SR according to the related art
  • Table 4 is a CS allocation table that is transmitted by the 2-bit HARQ-ACK and the SR according to the related art.
  • a base sequence contains 12 CSs.
  • the time-frequency resource of the SR is used, and the CS allocated to the SR is used, and the HARQ-ACK is modulated onto the CS of the SR; if there is no SR request, when the HARQ-ACK uses the HARQ-ACK
  • the frequency resource, and the CS uses the CS allocated to the HARQ-ACK, and the HARQ-ACK is modulated onto the CS of the SR. It is summarized as: “Yes” and “None” of the SR are expressed by using the time-frequency resources, and the CS is bound to the time-frequency resource, and the HARQ-ACK is modulated to the transmitted CS.
  • PUCCH format 0 and PUCCH format 1 are allowed for the PUCCH of the SR, wherein the PUCCH format 1 allows transmission across time slots in accordance with the protocol of the related art.
  • a physical uplink control channel PUCCH format 0 or format 1 of a UE carrying HARQ-ACK overlaps with a PUCCH time domain of multiple bearer scheduling requests SR, and wherein the PUCCH of the HARQ-ACK or the PUCCH of the SR is a cross
  • the PUCCH carrying the HARQ-ACK is format 1 spanning 2 slots
  • the multiple PUCCHs carrying the SR are also format 1 spanned 2 slots, and the time domain overlaps or partially overlaps.
  • the UE can only select one SR for transmission. That is, if there are multiple SR requests in multiple SRs, the UE can only send one of the SRs to the base station. So how does the UE send the HARQ-ACK and the selected SR to the base station? How does the base station know which SR request is fed back by the UE?
  • the present disclosure relates to transmission of HARQ-ACK and SR in an uplink control channel when a physical uplink control channel overlaps with a channel time domain of a plurality of scheduling request SRs.
  • the PUCCH format 1, 3 or 4 of one UE that carries HARQ-ACK is across multiple slot patterns, and overlaps with the PUCCH time domain of multiple SRs of the UE.
  • the PUCCH of multiple SRs may also span multiple time slots, or may not span multiple time slots.
  • the time domain overlap may be that their OFDM symbols are completely overlapping or partially overlapping.
  • the base station and the UE agree to transmit the HARQ-ACK and the SR in the following manner.
  • the PUCCH of the UE carrying the HARQ-ACK is selected in the subsequent time slot (except the first time slot), if there is a PUCCH of the SR of the UE in the time slot, and If the time slot overlap occurs when the PUCCH carrying the HARQ-ACK and the SR occurs after the time slot is selected, the UE does not select the time slot as the time slot of the PUCCH carrying the HARQ-ACK.
  • the PUCCH of the UE that carries the HARQ-ACK is selected, and the PUCCH of the SR of the UE is not selected when the subsequent slot is selected (except for the first slot).
  • the UE is configured with a PUCCH that repeats across m (m is greater than 1) time slots, and the UE according to the configured start time slot of the PUCCH, the start symbol position in the start time slot, the number of persistent symbols, and the number of time slots required to be repeated. m, recombining whether multiple uplink physical channel time domain overlaps occur to determine that subsequent time slots are selected to transmit the PUCCH.
  • the rule convention includes: when the UE is provided with the slot type configuration information, the UE selects the subsequent m-1 time slots from the start time slot (or selects m time slots from the start time slot, including There are enough uplink OFDM symbols used by the PUCCH in the initial slot, if there is more than or equal to the number of symbols used by the PUCCH in the starting slot, and the second optional addition condition is the same as the PUCCH in the starting slot.
  • the start symbol, and if the PUCCH is carried in the time slot does not cause time domain overlap of multiple uplink physical channels (including PUCCH, PUSCH, etc. carrying different UCI information) of the UE.
  • the UE If the UE is configured to repeat the PUCCH across m slots when the configuration information of the slot type is not provided, the UE considers that the subsequent m-1 slots from the start slot configured by the base station are PUCCH repetitions.
  • the slot is described as a time slot in which the UE considers that the starting time slot configured by the base station starts to be consecutively m times slots are PUCCH repetitions. In this case, the base station needs to ensure that the subsequent time slot satisfies the condition that the time slot is selected when the configuration information of the time slot type is provided for the UE.
  • the PUCCH of the UE is configured to be repeated across 4 time slots, and the base station configures the first time slot of the PUCCH and the starting OFDM symbol (the symbol in the text refers to the OFDM symbol) and the number of symbols in the PUCCH time domain in the time slot.
  • the PUCCH start PRB is configured. If the PUCCH frequency hopping, the corresponding start PRB is configured for each frequency hopping.
  • the UE selects a subsequent time slot, if there is an OFDM symbol that can be used by the PUCCH in the slot, and the PUCCH can use the same symbol as the starting OFDM symbol and the number of symbols of the PUCCH in the first slot, and When the PUCCH and the PUCCH time domain of the SR of the UE overlap, the UE selects the time slot as a PUCCH subsequent time slot.
  • the PUCCH of the SR herein may also be a PUCCH or a PUSCH of other purposes of the UE, such as a PUCCH that transmits CSI, or a PUSCH of the UE.
  • the limitation is mainly to prevent the UE from appearing multiple uplink physical channels in one time slot, and the uplink physical channels have time domain overlap. This will cause the PUCCH of the UE to be unable to be combined and decoded between multiple time slots, or cause the UE to simultaneously Transmitting multiple uplink physical channels will result in a significant increase in UE implementation costs.
  • the UE transmits one uplink physical channel to reduce UE implementation cost.
  • the UE If the UE is not provided with the configuration information of the slot type, the UE considers that the subsequent slot and the first slot of the PUCCH are consecutive. In this case, the base station does not configure the configuration information about the slot type of the UE.
  • the base station configures the PUCCH of the time slot for the UE, the base station guarantees that starting from the first time slot, the subsequent consecutive required number of time slots are satisfied. The condition for transmitting the PUCCH in the first slot. Therefore, in this case, when the UE considers the PUCCH to be a time slot, after the first time slot of the PUCCH, the subsequent time slots have a continuous required number of times and satisfy the transmission PUCCH requirement (and the PUCCH is transmitted in the first time slot). Same as the time slot. That is to say, the UE is provided with the slot type configuration information, and is processed according to the above judgment condition.
  • the above method can also be used as the case where the PUSCH is repeatedly transmitted through a plurality of slots, and the principle is similar. It is only necessary to perform peer-to-peer replacement for the PUCCH described above. I won't go into details here.
  • the PUSCH of the UE is configured to be repeated across n (n is greater than 1) time slots, and the base station configures the first slot position of the PUSCH and the starting symbols and symbols used by the PUSCH in the slot (also configured PUB of PRSCH).
  • the UE selects a subsequent time slot, if there is an OFDM symbol that can be used by the PUSCH in the slot, and the symbol that can be used by the PUSCH can be the same as the start symbol and the number of symbols of the PUSCH in the first slot, and
  • the PUSCH and other uplink physical channels of the UE overlap in time domain (this is an optional condition for selecting a subsequent time slot for the PUSCH)
  • the UE selects the time slot as a subsequent time slot of the PUSCH. .
  • the limitation of the last condition for the PUSCH cancellation is mainly because the PUSCH can still be combined with the PUSCH in other time slots even after the rate matching or puncturing, but the performance is slightly reduced, so the last condition is optional. .
  • the UE For the PUSCH of the UE, if the UE is not provided with slot type configuration information if it is transmitted across time slots, the UE starts from the first time slot by default, and the subsequent consecutive n-1 time slots are all satisfied time slots. That is to say, the UE is provided with the slot type configuration information, and is processed according to the above judgment condition.
  • a UE When a UE is configured to repeatedly transmit PUCCH format 3 or 4 across multiple time slots (here may generally refer to a physical channel that needs to be repeatedly transmitted across time slots), and appears in one or more time slots of the transmitted PUCCH, with the UE
  • PUCCH time domain overlaps of one or more SRs (Note: here the PUCCH of the SR may be a PUCCH of one slot, or may be a PUCCH that is repeated across slots, and the time domain overlap may be in one or more time slots.
  • the time domain overlap may also be that a PUCCH across time slots overlaps multiple SRs in multiple time slots respectively, in this case, how should the PUCCH across multiple time slots be transmitted and carry SR information And does not reduce the performance of PUCCH?
  • the PUCCH is repeatedly transmitted across multiple time slots mainly for improving uplink coverage, that is, UCI for PUCCH transmission in multiple time slots is used for combined decoding to improve performance.
  • the value of the X-bit bit is determined according to the SR number of the SR request to be transmitted by the UE, or the value is 0.
  • the data obtained by concatenating the X bits at the end of the UCI bit is encoded using a polar code and transmitted.
  • the above manner is preferentially considered to be applied in the start time slot of the PUCCH, and there is an overlap with one or more SR time domains.
  • the above manner is preferentially considered to be applied in the start slot of the PUCCH, and overlap with one or more SR time domains occurs, and the start symbols of the two are the same.
  • the above manner is preferentially considered to be applied in the start slot of the PUCCH, and overlap with one or more SR time domains occurs, and the start symbol of the SR is earlier than the start symbol of the PUCCH.
  • X bits are transmitted by puncturing or rate matching the PUCCH channel or by reserving resources in the PUCCH channel.
  • the number of bits of the X bit is or
  • the Qmax is the maximum number of SRs that the UE can be configured at the same time in the communication system; the Q is the number of SRs configured by the communication system for the UE (as denoted as Q1); or the Q is the W Among the time slots in which the time domain overlaps, the number of SRs with the most time domain overlap (denoted as Q2); or the Q is the time slot in which the time zones overlap in the W time slots, and the time domain overlaps.
  • the number of SRs (where Q may be different in different time slots, denoted as Q3).
  • the bit value of the X bit is the SR number of the SR request to be transmitted by the UE, or when the Q SRs are all without the SR request, the bit of the X bit is 0, wherein the SR number is
  • the SR indexes of the Q SRs are numbered in ascending or descending order; the reserved resources are determined according to the X-bit number corresponding to the Qmax or Q value.
  • An example is the different value description of Q: for example, the system allows a maximum of 8 SRs to be configured for the UE, that is, Qmax is 8, and a time slot or all W time slots overlapping with the time domain in the W time slots are applied.
  • one SR in the first time slot overlaps with the PUCCH format 3/4 time domain, and there is no SR and PUCCH format 3/4 in the second and fourth time slots.
  • the bit value of the X bit is the SR number of the SR request to be transmitted by the UE, or when the Q SRs are all without the SR request, the bit of the X bit is 0, wherein the SR number is The SR indexes of the Q SRs are numbered in ascending or descending order.
  • the time slot for transmitting the X bit may be the first time slot in the W time slots that overlaps in the time domain and the subsequent time slots (the time slots in the subsequent time slots that are not overlapped in the time domain are included or not included) are transmitted.
  • X bits, the remaining time slots (if any) do not transmit Xbit.
  • all of the W time slots transmit X bits regardless of whether the time domain overlap described above is in the time slot.
  • a part of the PUCCH resource is reserved for transmitting X bits, and the reserved resources are reserved according to the number of REs required for X bit transmission.
  • the HARQ-ACK bit information in the 6.2.7 section at this time is equivalent to the X bit pass rate matched data of the present application, and the data (Data) in the UL-SCH in the section 6.2.7, etc.
  • the UCI information carried in the PUCCH in this application is priced.
  • the PUCCH time domain overlap of the SRs (here, the time slots in the W slots that overlap in the time domain are called time-slot overlapping time slots, and the time slots in the W time slots where the time domain overlap does not appear as the non-time domain.
  • the overlapping time slots the number of SRs that may overlap in each time slot overlapped in the time domain is different.
  • the UE can only select one SR transmission with the SR request, and use the value of the X bits to represent the value.
  • the definition and value of X are as described above;
  • the information to be transmitted Y1 corresponding to the X bits is obtained, for example, modulated according to the rules of UCI encoding in the associated PUCCH.
  • the corresponding information Y2 to be transmitted is obtained.
  • the Y1 and Y2 are rate matched, and finally the transmission information Y is obtained.
  • the merge decoding needs to satisfy a plurality of conditions, for example, the mother code encoding matrix used for the mother code at the time of encoding is the same, the number of bits that are expected to be transmitted.
  • the information in the W time slots is finally equalized in each time slot, in the W time slots, regardless of whether the time domain occurs in the time slot.
  • Overlapping, information Y is transmitted in each time slot. That is, the PUCCH format 3/4 is rate matched using X bits in each slot.
  • the number of information to be transmitted in the PUCCH format 3/4 is equal, so the coded mother code matrix used is the same, so that PUCCH format 3/4 in the W time slots can be combined.
  • the UE initiates the above mode transmission.
  • the UE is in all the time slots according to the first time slot.
  • the determined X (number of bits and bit value) rate matches the PUCCH format 3/4 and is then transmitted in each time slot. Except for the first time slot, the remaining W-1 time slots discard the SR. In this way, the combined decoding of the PUCCH format 3/4 in the W slots can be guaranteed, and the X bits can also be guaranteed to be combined and decoded.
  • the UE is in all the time slots according to the first time slot.
  • the determined X (bit number and bit value) bits are concatenated at the end of the UCI of the PUCCH format 3/4, and then jointly coded and transmitted in each slot, except for the first slot, the remaining W-1
  • the SR is discarded in the time slot. In this way, the combined decoding of the PUCCH format 3/4 in the W slots can be guaranteed, and the X bits can also be guaranteed to be combined and decoded.
  • the UE transmits the UCI information (including one or more of the HARQ-ACK, the SR, and the CSI) carried in the PUCCH through the PUSCH channel. , discard the PUCCH channel.
  • UCI information including one or more of the HARQ-ACK, the SR, and the CSI
  • eMBB Mobile Broadband
  • the UCI is transmitted through the PUSCH, and the mapping position of the UCI in the PUSCH is strictly defined (refer to 3GPP TS 38.212).
  • the HARQ-ACK is mapped from the DMRS symbol of the PUSCH, and the DMRS symbol is mapped.
  • the DMRS is in the third symbol of the PUSCH, the PUCCH has 2 symbols, and overlaps with the first 2 symbols of the PUSCH.
  • the HARQ-ACK carried by the PUCCH will be mapped to the fourth.
  • the time domain location of the PUCCH is changed. If the PUCCH carries the Ultra Reliability and Low Latency Communication (URLLC) service information, the time domain location change may cause the service. The transfer failed.
  • URLLC Ultra Reliability and Low Latency Communication
  • the symbols occupied by the PUSCH of the UE are: symbols 2 to 13 (number starting from 0), assuming that symbol 3 is a DMRS symbol; symbols occupied by PUCCH are: symbols 11 to 13. Obviously, the time domain overlaps the symbols 11 to 13. It is assumed here that the PUCCH carries URLLC service information, such as HARQ-ACK. URLLC is a very demanding service for delays, meaning that the time domain location sent cannot be easily modified. So how do you deal with PUCCH transmission in this case?
  • the PUCCH may be a PUCCH that is repeated across slots
  • the PUSCH may also be a PUSCH that is repeated across slots.
  • the methods of processing below are all common. The processing methods include the following three methods:
  • the UE transmits the UCI carried by the PUCCH through the PUSCH channel, and uses only the PUCCH and PUSCH time domain overlapping symbols in the PUSCH to perform UCI mapping and transmission.
  • the PUCCH is discarded.
  • UCI is mapped in the first two symbols of the PUSCH instead of starting from the fourth symbol of the PUSCH.
  • the UCI is mapped in all of the symbols 11 to 13, instead of starting from the symbol 4. This ensures that the time domain position of the PUCCH does not change.
  • This method is especially applicable to the case where the PUCCH and the PUSCH start symbols are the same, because the PUSCH and the PUCCH can be simultaneously informed of the information to be transmitted.
  • UCI mapping symbols in the PUSCH may be far from the DMRS, and the decoding performance of the UCI may be degraded (for example, in Example 2).
  • the following approach is used.
  • the UE transmits the UCI carried by the PUCCH through the PUSCH channel, and uses only the PUCCH and PUSCH time domain overlapping symbols in the PUSCH to perform UCI mapping and transmission.
  • the PUCCH is discarded.
  • the UCI decoding RS information is interspersed in the UCI information, and then the UCI information interspersed with the decoding RS is mapped as new UCI information to the symbols in which the PUCCH and the PUSCH time domain overlap. In this way, UCI can be decoded using interspersed decoded RSs to overcome the above problems.
  • the decoded RS bit or the decoded RS modulation symbol is inserted at the agreed position of the UCI information bit or the UCI information modulation symbol to form a new series of UCI information or a series of UCI information modulation symbols, and then mapped to the PUCCH and PUSCH overlap. Send on the symbol.
  • the UE puncturing the PUSCH in the symbols in which the PUCCH and the PUSCH overlap, that is, the PUSCH is not transmitted in the overlapping symbols, and the PUCCH is transmitted in the overlapping symbols.
  • the PUCCH may use the frequency domain resource of the PUSCH in the overlapping symbol, or may use the frequency domain resource of the PUCCH itself.
  • the PUCCH channel is transmitted.
  • the first two symbols of the PUSCH are destroyed, and the PUCCH is transmitted in the first two symbols.
  • the symbols 11 to 13 of the PUSCH are punctured, and the PUCCH is transmitted in the symbols 11 to 13.
  • the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation.
  • the technical solution of the present disclosure which is essential or contributes to the related art, may be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD-ROM).
  • the instructions include a number of instructions for causing a terminal device (which may be a cell phone, a computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present disclosure.
  • a time slot determining device for a physical uplink channel is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and conceivable.
  • FIG. 2 is a structural diagram of a time slot determining apparatus for a physical uplink channel, including: a first receiving module 22 and a first determining module 24, according to a preferred embodiment of the present disclosure.
  • the first receiving module 22 is configured to receive configuration information of the first communications node, where the configuration information is used to indicate that the second communications node repeatedly transmits the physical uplink channel across the m time slots.
  • the first determining module 24 is connected to the first receiving module 22, and is configured to determine the m time slots according to one of the following manners: determining, according to the configuration information, whether a physical uplink channel time domain overlap occurs in the time slot; Configuration information is determined.
  • the physical uplink channel may include a physical uplink control channel and a physical uplink shared channel.
  • the physical uplink control channel may be determined according to the configuration information and whether the physical uplink channel time domain overlap occurs in the time slot.
  • the physical uplink shared channel can be determined according to the configuration information.
  • the second communication node receives the configuration information of the first communication node, where the configuration information is used to indicate that the second communication node repeatedly transmits the physical uplink channel across the m time slots; the second communication node is configured according to the configuration information. And determining whether the physical uplink channel time domain overlap occurs in the time slot to determine the m time slots; or determining according to the configuration information.
  • the configuration information when the physical uplink channel is a physical uplink control channel (PUCCH), the configuration information includes at least one of the following: a start slot of the PUCCH; and a start orthogonal frequency division of the PUCCH in the start slot.
  • the OFDM symbol position is multiplexed; the number of OFDM symbols in the PUCCH in the start time slot; the value of m of the PUCCH;
  • the configuration information when the physical uplink channel is the physical uplink shared channel PUSCH, includes at least one of the following: PUSCH The starting time slot; the starting Orthogonal Frequency Division Multiplexing (OFDM) symbol position of the PUSCH in the starting time slot; the number of OFDM symbols in the PUSCH in the starting time slot; the value of m of the PUSCH.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the information that is not included adopts a value agreed in the communication system: a starting time slot of the physical uplink channel; and the physical uplink channel in the starting time slot.
  • the starting Orthogonal Frequency Division Multiplexing (OFDM) OFDM symbol position; the physical uplink channel in the starting time slot is the number of OFDM symbols; the value of m of the physical uplink channel.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the second communication node determines the manner of the m time slots, including: the start time slot of the PUCCH is determined by the configuration information; and the subsequent m-1 times The slot needs to satisfy the condition that the same starting OFDM symbol position in the slot as the PUCCH in the start slot can be used; the number of consecutive OFDM symbols in the slot that allow the PUCCH to be used is greater than or equal to the start The number of consecutive OFDM symbols used by the PUCCH in the slot; when the PUCCH is transmitted in the slot, there is no time domain overlap between all or part of the physical uplink channels transmitted in the slot. It should be added that the subsequent m-1 time slots selected by the second communication node are generally not consecutive m-1 time slots.
  • the m time slots are determined, including: the start time slot of the PUSCH is determined by the configuration information; and the subsequent m-1 time slots need to satisfy at least the following conditions:
  • determining the m time slots includes:
  • the m-1 time slots are consecutive after the start time slot, and the start time slots are a total of the m time slots.
  • an apparatus for transmitting a physical uplink channel comprising: a second receiving module and a first transmission module.
  • the second receiving module is configured to receive the second configuration information of the first communications node, where the second configuration information is used to indicate that the second communications node repeatedly transmits the physical uplink control channel across the W timeslots, where In one or more time slots of the time slots, the physical uplink channel of the repeated transmissions overlaps with the time domain of the physical uplink channels of the Q scheduling request SRs respectively;
  • a first transmission module configured to transmit X bits according to one of the following manners in the one or more time slots in which the time domain overlaps, wherein the X bits are used to indicate to the first communication node which of the Q SRs SR has SR request:
  • the W and the Q are integers greater than or equal to 1, and the values of the Qs are different in different time slots in which the time domain overlaps.
  • Q SRs can be understood as Q channels, or Q PUCCHs.
  • the X bits are transmitted in the physical uplink control channel, and the encoded information of the X bits may be transmitted in the physical uplink control channel.
  • the X-bit rate matching is transmitted in the information in the physical uplink control channel, and the X-bit encoded information rate may be matched to the UCI bit in the physical uplink control channel. The encoded information is transmitted.
  • the apparatus further comprises at least one of the following:
  • the number of bits of the X bit is or
  • the Qmax is the maximum number of SRs that the second communication node can be configured at the same time in the communication system, and the Q is the number of SRs configured by the communication system to the second communication node; or the Q is the time domain of the W time slots.
  • the bit value of the X bit is the SR number of the SR request to be transmitted by the second communication node, or when the Q SRs are all without the SR request, the bit value of the X bit is 0, wherein the SR number is The number of the SR indexes of the Q SRs in ascending or descending order;
  • the reserved resource is determined according to the number of X bits corresponding to the Q max or Q value.
  • the X bits are only transmitted in OFDM symbols in which time domain overlap occurs, or in symbols adjacent to the decoded reference signal DMRS symbols of the physical uplink control channel; or, only in time domain overlapping OFDM symbols
  • the puncturing, rate matching, or reserved resources are only performed in the symbols of the decoded reference signal DMRS symbols that are immediately adjacent to the physical uplink control channel. It should be added that the above-mentioned time domain overlapping OFDM symbols are symbols in time slots in which time domain overlap occurs. Transmitted in the symbol of the DMRS symbol of the decoding reference signal of the physical uplink control channel, it can be described that the DMRS from the physical uplink control channel is transmitted in the nearest symbol.
  • the symbols in the above embodiments may each be an OFDM symbol.
  • the apparatus further comprises: transmitting the DMRS of the physical uplink control channel in two or one side OFDM symbols closest to the OFDM symbol in which the time domain overlap occurs.
  • the apparatus further includes: in a time slot in which the time slots overlap in the W time slots, transmitting the X bit in the physical uplink control channel, and matching the X bit rate in the time slot.
  • the information in the physical uplink control channel is transmitted; wherein, in the time slot in which the time domain overlap does not occur, the value of the X bit does not represent the SR number of the SR request, and the value of each bit of the X bit is 1 or 0, the number of bits of X bits is or
  • the apparatus further includes: in the W time slots, starting from a first time slot in which the time domain overlap occurs, and in a subsequent time slot, the X bit is in the physical uplink control channel In transit. It should be added that the subsequent time slots here may be the time slots in all subsequent W time slots.
  • an apparatus for transmitting a physical uplink channel comprising: a second determining module and a second transmitting module.
  • the second determining module is configured to determine that the physical uplink control channel PUCCH to be transmitted and the physical uplink shared channel PUSCH occur in time domain overlap.
  • the second transmission module is configured to transmit the uplink control information UCI carried in the PUCCH or the PUCCH on a symbol in which the time domain overlaps in the PUSCH;
  • the second communication node transmits the PUCCH or the uplink control information UCI carried in the PUCCH on the symbol in which the time domain overlap occurs, and the PUSCH in the symbol in which the time domain overlap occurs is punctured.
  • the above UCI may include one or more of HARQ-ACK, SR, and channel state information CSI.
  • the PUSCH may not be transmitted when the time domain overlap position occurs.
  • the above technical solution overcomes the defect in the related art that how to transmit the physical uplink channel scheme when the PUCCH and the PUSCH overlap in the time domain.
  • UCI information is transmitted in both time domain overlapping positions.
  • the second communications node transmits the uplink control information UCI carried by the PUCCH on the time-domain overlapping symbol in the PUSCH, including: the second communications node determines a reference for decoding the UCI information.
  • the signal RS; the reference signal RS and the UCI are both transmitted on a symbol in which the time domain overlaps in the PUSCH.
  • the DMRS of the PUSCH or the DMRS of the PUCCH is transmitted in the OFDM symbol closest to the OFDM symbol overlapping the time domain or in the OFDM symbol.
  • the second communication node transmits the PUCCH or the UCI according to one of the following manners in one or more time slots in which the time domain overlap occurs:
  • the UCI or the PUCCH is transmitted in the physical uplink shared channel, and resources are reserved in the physical uplink shared channel, and the encoded information of the UCI is transmitted in the reserved resource.
  • each of the above modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the above modules are in any combination.
  • the forms are located in different processors.
  • a storage medium having stored therein a computer program, wherein the computer program is configured to perform the steps of any one of the method embodiments described above at runtime.
  • an electronic device comprising a memory and a processor, wherein the memory stores a computer program, the processor being configured to execute the computer program to perform any of the above The steps in the method embodiments.
  • modules or steps of the present disclosure 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. As such, the disclosure is not limited to any specific combination of hardware and software.

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Abstract

L'invention concerne un procédé et un appareil de détermination d'intervalle de temps pour un canal de liaison montante physique. Le procédé comprend les étapes suivantes : un second nœud de communication reçoit des informations de configuration d'un premier nœud de communication, les informations de configuration étant utilisées pour ordonner au second nœud de communication de transmettre de manière répétée un canal de liaison montante physique à travers m intervalles de temps ; et le second nœud de communication déterminant les m intervalles de l'une des façons suivantes : détermination selon les informations de configuration et si le chevauchement dans le domaine temporel du canal de liaison montante physique se produit ou non dans un intervalle ; et détermination selon les informations de configuration.
PCT/CN2019/082161 2018-04-11 2019-04-11 Procédé et appareil de détermination d'intervalle de temps pour canal de liaison montante physique Ceased WO2019196888A1 (fr)

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