CN111082915A

CN111082915A - Method and device in wireless communication

Info

Publication number: CN111082915A
Application number: CN202010047930.8A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2016-08-14
Filing date: 2016-10-21
Publication date: 2020-04-28
Anticipated expiration: 2036-10-21
Also published as: WO2018033009A1; CN111082915B

Abstract

The invention discloses a method and a device in wireless communication. The UE receives the first information, then receives K1 first type radio signals, and sends the second information in a first time interval. The first information is higher layer signaling, the first time interval is one of L time intervals, the first information is used to determine the position of the first time interval in the L time intervals, and the second information is used to determine whether the K1 first type wireless signals are correctly decoded. According to the invention, the first information is designed, so that HARQ-ACK information corresponding to the K1 first-class wireless signals is transmitted in the first time interval, the transmission of UCI aiming at the HARQ-ACK is optimized, the resource overhead and the power overhead of uplink control information transmission are reduced, and the overall system performance and the spectrum efficiency are improved.

Description

Method and device in wireless communication

The present application is a divisional application of the following original applications:

application date of the original application: 2016 (10 months) and 21 (days)

- -application number of the original application: 201610917712.9

The invention of the original application is named: method and device in wireless communication

Technical Field

The present application relates to transmission schemes for wireless signals in wireless communication systems, and more particularly, to methods and apparatus in users and base stations that support low-latency communication.

Background

In the conventional LTE (Long-Term Evolution) and LTE-a (Long Term Evolution advanced, enhanced Long Term Evolution) systems, a TTI (Transmission Time Interval), a Subframe (Subframe), or a PRB (Physical Resource Block) (Pair) corresponds to one ms (milli-second, millisecond) in Time. An LTE subframe includes two Time slots (Time slots), which are a first Time Slot and a second Time Slot, respectively, and the first Time Slot and the second Time Slot occupy the first half millisecond and the second half millisecond of the LTE subframe, respectively.

One important application of the Latency Reduction (LR) topic in 3GPP (3rd Generation Partner Project) Release 14 is low-Latency communication. In a conventional LTE system, transmission of a Downlink PDSCH (Physical Downlink Shared Channel) and HARQ-ACK (Hybrid Automatic Repeat request acknowledgement) corresponding to the transmission meet a strict predefined timing relationship. The conventional LTE frame structure needs to be redesigned to reduce the delay requirement, and correspondingly, the new downlink transmission and the uplink feedback for the downlink transmission need to be redesigned.

Disclosure of Invention

In the Release 9/10 system, for CA (Carrier Aggregation) with an Aggregation Carrier number not greater than 5, a Physical Uplink Control Channel (PUCCH) Format 3 is introduced, and the PUCCH based on Format 3 can transmit HARQ-ACK corresponding to data transmission on not greater than 5 downlink CCs (Component carriers) at a time. In the Release 13 system, PUCCH frequency 4&5 is introduced for CA with aggregation carrier number not greater than 32, and PUCCH based on Format 4&5 can transmit HARQ-ACK corresponding to data transmission on no more than 32 downlink CCs (component carriers) at a time.

In the Study Item related to Release 14 delay reduction, one direction to be studied is the design of the timing relationship between downlink transmission and uplink feedback for downlink transmission, and compared with the LTE system, the time interval between downlink transmission and corresponding uplink HARQ-ACK is reduced for the purpose of low delay transmission. However, when a UE (user equipment) can simultaneously support multiple downlink transmissions based on a TTI (Transmission Time Interval) of 1ms and an sTTI (Short Transmission Time Interval) of less than 1ms, uplink HARQ-ACKs of the multiple downlink transmissions may be uploaded in the same subframe. Meanwhile, when the UE supports downlink CA (Carrier Aggregation), the situation becomes more complicated, and more HARQ-ACKs are uploaded to the base station in the same subframe.

An intuitive solution is that UL (Uplink) HARQ-ACK based on TTI of 1ms is transmitted in a conventional PUCCH or PUSCH (Physical Uplink Shared Channel), and UL HARQ-ACK based on TTI less than 1ms is transmitted in a newly designed sPUCCH (Short Latency Physical Uplink control Channel) or sPUSCH (Short Latency Physical Uplink Shared Channel). However, it is obvious that this method will increase the uplink power of the UE, and for the UE with limited power, the performance will be affected. Meanwhile, it is inefficient to transmit a plurality of UCIs (Uplink control information).

The present application provides a solution to the above problems. It should be noted that the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict. For example, embodiments and features in embodiments in the UE of the present application may be applied in a base station and vice versa.

The application discloses a method in UE supporting HARQ, which comprises the following steps:

-step a. receiving first information;

-step b. receiving K1 first type radio signals;

-step c. transmitting the second information in the first time interval.

Wherein the first information is higher layer signaling, the first time interval is one of L time intervals, and the first information is used for determining the position of the first time interval in the L time intervals, wherein the L time intervals belong to one subframe. The second information is physical layer signaling. K1 first-class bit blocks are respectively used for generating the K1 first-class wireless signals, and the transmission time corresponding to the first-class bit blocks is 1 millisecond. The second information is used to determine whether the K1 first class bit blocks are decoded correctly. The K1 is a positive integer, and the L is a positive integer greater than 1.

As an embodiment, the above method is characterized in that: the transmission time interval corresponding to the K1 first-class bit blocks is transmission based on conventional time delay of TTI, and the HARQ-ACK corresponding to the K1 first-class bit blocks is transmitted at the first time interval, that is, the HARQ-ACK corresponding to the K1 first-class bit blocks is transmitted on uplink control signaling based on sTTI, thereby optimizing resource allocation and power of the uplink control signaling.

As an embodiment, the higher layer signaling is RRC (Radio Resource Control) signaling.

For one embodiment, the first type bit Block includes a positive integer number of TBs (Transport blocks).

As an embodiment, the first type bit block includes a positive integer number of bits.

As an embodiment, the first type wireless signal is an output of the corresponding first type bit block after Channel Coding (Channel Coding), Modulation Mapper (Modulation Mapper), Layer Mapper (Layer Mapper), Precoding (Precoding), Resource Element Mapper (Resource Element Mapper), OFDM (orthogonal frequency Division Multiplexing) signal Generation (Generation) in sequence.

As an embodiment, the K1 first type wireless signals are transmitted on K1 carriers respectively.

As a sub-embodiment of this embodiment, the above embodiment is characterized in that HARQ-ACKs corresponding to the PDSCH based on TTI from multiple carriers and located in the same subframe are transmitted on sPUCCH or sPUSCH in the same first time interval.

As an embodiment, the K1 first type wireless signals are respectively transmitted on K1 subframes.

As a sub-embodiment of this embodiment, the above embodiment is characterized in that HARQ-ACKs corresponding to PDSCH based on TTI from multiple different subframes are transmitted on sPUCCH or sPUSCH in the same first time interval.

In an embodiment, the number of TBs included in at least two of the K1 first-type bit blocks is not equal.

As one embodiment, L is equal to one of {2, 3, 4, 6,7 }.

As a sub-embodiment of this embodiment, the duration of the time interval is 0.5 milliseconds.

As an embodiment, at least 2 of the L time intervals differ in duration.

As an embodiment, the duration of the L time intervals is the same.

As an embodiment, the physical layer channel corresponding to the second information is sPUCCH or sPUSCH.

As an embodiment, the duration of the time interval described in the present application is equal to one of {14 × T, 7 × T, 4 × T, 2 × T }. The T is the duration of the time window occupied by one multicarrier symbol.

As an embodiment, the multicarrier symbol in the present application is one of { an OFDM symbol including a CP (Cyclic Prefix ), a DFT-s-OFDM (Discrete Fourier Transform spread OFDM) symbol including a CP, an SC-FDMA (Single-Carrier Frequency division multiple Access, Single Carrier Frequency division multiple Access) symbol, and an FBMC (Filter Bank multicarrier) symbol }.

As an embodiment, the multicarrier symbol in the present application is a downlink OFDM symbol in LTE.

As an embodiment, the multicarrier symbol in the present application is an SC-FDMA symbol in uplink in LTE.

According to one aspect of the present application, the above method is characterized in that the step B further comprises the steps of:

-step b1. receiving K2 second type radio signals.

And K2 second-class bit blocks are respectively used for generating the K2 second-class wireless signals, and the transmission time corresponding to the second-class bit blocks is less than 1 millisecond. The K2 is a positive integer. The second information is used to determine whether the K2 second bit blocks are decoded correctly.

As an embodiment, the above method is characterized in that: for downlink data transmission based on sTTI, HARQ-ACKs corresponding to the K2 second-type bit blocks 2 second-type bit blocks are also transmitted in the second information, and in combination with the above steps B and C, that is, HARQ-ACKs of the first-type radio signal and the second-type radio signal based on different transmission delay requirements are transmitted on the same second information (i.e., the same physical layer channel transmission). The method avoids the problems of power limitation and resource allocation caused by the fact that the UE simultaneously supports transmission based on the TTI and the sTTI and sends a plurality of uplink physical channels at the same time.

As an embodiment, the time domain resource occupied by the second type of wireless signal is used for determining the first time interval.

As a sub-embodiment of this embodiment, the time domain resource occupied by the second type of wireless signal is used to determine the first time interval, where: the time domain resources occupied by the second type of wireless signal implicitly indicate the time domain resources occupied by the first time interval.

As an auxiliary embodiment of this sub-embodiment, the implicit indication means: the starting time of the time domain resource occupied by the second type of wireless signal is T1(ms), and the starting time of the first time interval is (T1+ T2) (ms).

As an example of this subsidiary embodiment, said T2 is fixed.

As an example of this subsidiary embodiment, said T2 is a positive integer multiple of the duration of said first time interval.

As an example of this subsidiary embodiment, said T2 relates to the duration of said first time interval.

As an example of this subsidiary embodiment, the T2 is not less than T3. The T3 is fixed.

As an example of the two examples above, the T2 and the T3 are each positive integer multiples of one of {14 × T, 7 × T, 4 × T, 2 × T }. The T is the duration of one multicarrier symbol.

In an embodiment, at least two of the K2 second-type bit blocks have different transmission times.

As an embodiment, the second type bit block comprises a positive integer number of TBs.

As an embodiment, the second type bit block includes a positive integer number of bits.

As an embodiment, the second type wireless signal is an output of the corresponding second type bit block after the OFDM signal is generated, which is sequentially subjected to channel coding, modulation mapper, layer mapper, precoding, resource element mapper.

As an embodiment, the K2 second-type wireless signals are respectively transmitted on K2 carriers.

For one embodiment, the second type of wireless signal is transmitted after the first type of wireless signal.

As an example, the K2 second-type wireless signals are transmitted in a time interval less than 1 millisecond.

-step b2. receiving K3 wireless signals of the first type.

Wherein K3 first class bit blocks are respectively used for generating the K3 first class wireless signals, the K3 being a positive integer. The time domain resources occupied by the K1 first-type wireless signals and the time domain resources occupied by the K3 first-type wireless signals are partially or completely overlapped. HARQ-ACK associated with the K3 blocks of the first type of bits are transmitted in a second time interval. The second time interval is one of the L time intervals and outside the first time interval. The first information is used to determine the location of the second time interval in the L time intervals.

As an embodiment, the above method is characterized in that: when there are more first-type bit block transmissions in one time window of the UE, for example, (K1+ K3) first-type bit blocks, HARQ-ACK information corresponding to the (K1+ K3) first-type bit blocks may be fed back at different time intervals, for example, the first time interval and the second time interval described in the above method. The method can further optimize the sPUCCH and the sUSCH based on the sTTI to ensure that the sUCCH and the sUSCH in one time interval can not bear excessive HARQ-ACK information when carrying the HARQ-ACK based on the TTI.

As an example, another peculiarity of the above method consists in: the first time interval and the second time interval both belong to the same subframe. This approach does not impact the timing requirements of existing LTE based TTI transmissions.

As an embodiment, the step B2 further includes the following steps:

step b20. receiving K3 first type signalling.

Wherein the K3 first-type signaling respectively comprise scheduling information of the K3 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first domain is included in the first type of signaling only if the number of carriers included in the second set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits associated with the first type of wireless signal in third information. The third information is used to determine whether the K3 first class bit blocks are decoded correctly.

As a sub-embodiment of this embodiment, the K3 first-type wireless signals are transmitted on K3 carriers, respectively. The K3 carriers belong to the second set of carriers, which is a set of carriers other than the first set of carriers of the Q sets of carriers.

As an embodiment, after performing the step B2, the UE further performs the following steps:

-step c1. transmitting said third information in said second time interval.

Wherein the third information is used to determine whether the K3 first class bit blocks are correctly decoded.

As an embodiment, the K1 first type wireless signals and the K3 first type wireless signals are both transmitted in one subframe.

As an embodiment, the frequency domain resources occupied by the K1 first-type wireless signals and the frequency domain resources occupied by the K3 first-type wireless signals do not overlap.

According to an aspect of the application, the above method is characterized in that the first information is used to determine Q carrier sets, the carrier sets including one or more carriers, Q being a positive integer not greater than L. HARQ-ACKs associated with the first type of wireless signal transmitted in a given subframe over the Q sets of carriers are transmitted in Q time intervals, respectively, the Q time intervals being a subset of the L time intervals. The K1 wireless signals of the first type are transmitted in the given subframe on K1 carriers, respectively. The K1 carriers belong to a first set of carriers, which is one of the Q sets of carriers.

As an embodiment, the above method is characterized in that: the first signaling divides all carriers configured by the UE for transmitting the first type of wireless signals into Q carrier sets, and HARQ-ACK information of the first type of wireless signals on each carrier set is mapped to a sUCCH or a sUSCH in one of the Q time intervals for transmission. This avoids overload of sPUCCH or sPUSCH due to HARQ-ACKs on all carriers being mapped into one time interval.

As an embodiment, the K3 wireless signals of the first type are transmitted on the given subframe of K3 carriers, respectively, the K3 carriers belong to a second set of carriers, which is one of the Q sets of carriers except the first set of carriers.

step B0. receives K1 first type signaling.

Wherein the K1 first-type signaling respectively comprise scheduling information of the K1 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first type of signaling includes a first domain only if the number of carriers included in the first set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits in the second information associated with the first type of wireless signal.

As an embodiment, the above method is characterized in that: determining, by the first domain, a number of HARQ-ACK bits associated with the first type of wireless signal in the second information facilitates the UE to specify how many HARQ-ACK bits associated with the first type of wireless signal are transmitted in the second information. And meanwhile, setting a threshold value of 5, namely when the PUCCHFIMAT 3 cannot accommodate HARQ-ACK bits associated with all the first type of wireless signals, the second information based on the sTTI is valid. Further avoiding the introduction of unnecessary system design complexity.

As an embodiment, the number of carriers configured by the UE is greater than 5, the number of carriers included in the first carrier set is equal to 1, and the second information is transmitted on sPUCCH format 1 a.

As a sub-embodiment of this embodiment, the UE only configures one carrier based on TTI transmission, and the HARQ-ACK configured on the carrier based on TTI transmission is transmitted on sPUCCH format 1a, which reduces the redundancy of sPUCCH and improves the transmission efficiency.

As an embodiment, the number of carriers configured by the UE is greater than 5, the number of carriers included in the first carrier set is less than or equal to 5, and the first domain is not included in the first type of signaling.

As a sub-embodiment of this embodiment, the UE only configures no more than 5 carriers based on TTI transmission, the conventional PUCCH Format 3 may transmit all HARQ-ACK Information based on TTI transmission, and the first field is not used, which reduces the redundancy of DCI (Downlink Control Information) and improves transmission efficiency.

As an embodiment, the first field is a DAI (Downlink Assignment Index) field.

As an embodiment, the first field comprises 4 information bits.

For one embodiment, the first domain is a Total (Total) DAI domain.

As an embodiment, the first field includes 2 bits, and the first field in the first type of signaling is equal to a remainder obtained by dividing a number of HARQ-ACK bits associated with the first type of wireless signals in the second information by 4.

step b10. receiving K2 second type signalling.

Wherein the K2 second-type signaling respectively include scheduling information of the K2 second-type wireless signals. The second type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The second type of signaling comprises a first domain. The first field in the second type of signaling is used to determine the number of HARQ-ACK bits in the second information.

As an embodiment, the above method is characterized in that: determining the total number of HARQ-ACK bits in the second information by the first field, in conjunction with the first field in the first type of signaling in step B0, facilitates the UE to explicitly transmit the number of HARQ-ACK bits associated with the first type of wireless signals and the number of HARQ-ACK bits associated with the second type of wireless signals in the second information.

As an embodiment, the first field includes 2 bits, and the first field in the second type of signaling is equal to a remainder obtained by dividing the number of HARQ-ACK bits in the second information by 4.

As an embodiment, the first field includes 2 bits, and the first field in the second type of signaling is equal to a remainder obtained by dividing a number of HARQ-ACK bits associated with the second type of wireless signals in the second information by 4. The number of HARQ-ACK bits in the second information is equal to the sum of the number of HARQ-ACK bits in the second information associated with the second type of wireless signal plus the number of HARQ-ACK bits in the second information associated with the first type of wireless signal.

As an embodiment, a second field is included in the second type of signaling, the second field in a given second type of signaling being used to determine a number of HARQ-ACK bits in the second information associated with a given set of wireless signals. The given set of radio signals is the second type of radio signals transmitted in a given set of carriers, the given set of carriers including all carriers for which the UE is currently configured and for which the carrier index is not greater than the carrier index of a given carrier occupied by the second type of radio signals scheduled by the given second type of signaling.

As a sub-embodiment of this embodiment, the second field in the given second type of signaling is equal to a remainder obtained by dividing a given parameter by 4, the given parameter being a number of HARQ-ACK bits associated with the given set of wireless signals in the second information.

According to an aspect of the application, the method is characterized in that the first information includes M first sub information, and the M first sub information respectively corresponds to M carriers. The first sub-information is used to determine time domain resources occupied by HARQ-ACK associated with the first type of wireless signals transmitted on the corresponding carrier within a subframe. The L time intervals belong to one subframe.

As an embodiment, the above method is characterized in that: the first information is configured on a per CC (per-CC) basis.

As an embodiment, the M carriers correspond to all carriers configured by the UE.

As one embodiment, the M is equal to a positive integer greater than 5 and not greater than 32.

As one embodiment, M is equal to a positive integer greater than 32.

As an embodiment, the M first sub information respectively correspond to the M carriers one to one.

As an embodiment, the given first sub information comprises Y information bits, said Y being equal to a positive integer.

As a sub-embodiment of this embodiment, the first target-subframe comprises Z time intervals, Z being a positive integer greater than 1. Y is equal to

Wherein

Represents the largest positive integer less than (X + 1).

As a sub-embodiment of this embodiment, the Y is used to determine the position of the target time interval in the Z time intervals comprised in the first target-subframe.

As an embodiment, the given wireless signal is transmitted on a second target-subframe, and the second target-subframe and the first target-subframe satisfy the following timing relationship: the first target-subframe corresponds to subframe # n, and the second target-subframe is at subframe # (n-k). The given wireless signal is the first type of wireless signal, fourth information is transmitted in the first target-subframe, the fourth information is used to determine whether the given wireless signal was correctly received.

As a sub-embodiment of this embodiment, the UE adopts FDD (Frequency Division duplex) mode, and k is equal to 4.

As a sub-embodiment of this embodiment, the UE adopts TDD (Time Division Duplex) mode, and the K satisfies K ∈ K, the definition of K is as shown in Table 10.1.3.1-1 in TS 36.213 (see the following Table), and the K corresponds to the set { K ∈ K₀,k₁,...,k_M-1K, the K and the K₀,k₁,...,k_M-1The relationship relates to the value of n and the corresponding TDD Configuration (Configuration).

Table 10.1.3.1-1:Downlink association set K:{k₀,k₁,…k_M-1}for TDD

The peculiarities of the above embodiment and of the two sub-embodiments are: and the subframe for transmitting the fourth information accords with the time sequence relation of uplink HARQ-ACK of the existing LTE system, and has no influence on the system time sequence based on TTI transmission.

As an embodiment, the first Information is transmitted in a physical configdivided IE (Information Element) in RRC signaling.

As an embodiment, the first information is transmitted in a PUCCH-Config IE in RRC signaling.

The application discloses a method in a base station supporting HARQ, which comprises the following steps:

-step a. sending a first information;

-step b. transmitting K1 first type radio signals;

-step c. receiving second information in a first time interval.

-step b1. transmitting K2 second type radio signals.

-step b2. transmitting K3 of said first type of radio signals.

As an embodiment, the step B2 further includes the following steps:

step b20. send K3 first type signalling.

Wherein the K3 first-type signaling respectively comprise scheduling information of the K3 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first domain is included in the first type of signaling only if the number of carriers included in the second set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits associated with the first type of wireless signal in third information. The third information is used to determine whether the K3 first class bit blocks are decoded correctly. The second set of carriers is a set of carriers other than the first set of carriers of the Q sets of carriers.

As an embodiment, after performing the step B2, the base station further performs the following steps:

-step c1. receiving said third information in said second time interval.

step B0. sends K1 first type signaling.

step b10. send K2 second type signalling.

The application discloses a user equipment supporting HARQ, which comprises the following modules:

-a first receiving module: for receiving first information;

-a second receiving module: used for receiving K1 first-type wireless signals;

-a first sending module: for transmitting the second information in the first time interval.

For an embodiment, the second receiving module is further configured to receive K1 first-type signaling. Wherein the K1 first-type signaling respectively comprise scheduling information of the K1 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first type of signaling includes a first domain only if the number of carriers included in the first set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits in the second information associated with the first type of wireless signal.

For an embodiment, the second receiving module is further configured to receive K3 first-type signaling. Wherein the K3 first-type signaling respectively comprise scheduling information of the K3 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first domain is included in the first type of signaling only if the number of carriers included in the second set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits associated with the first type of wireless signal in third information. The third information is used to determine whether the K3 first class bit blocks are decoded correctly. The second set of carriers is a set of carriers other than the first set of carriers of the Q sets of carriers.

For an embodiment, the second receiving module is further configured to receive K2 second-type signaling. Wherein the K2 second-type signaling respectively include scheduling information of the K2 second-type wireless signals. The second type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The second type of signaling comprises a first domain. The first field in the second type of signaling is used to determine the number of HARQ-ACK bits in the second information.

For one embodiment, the second receiving module is further configured to receive K2 second-type wireless signals. And K2 second-class bit blocks are respectively used for generating the K2 second-class wireless signals, and the transmission time corresponding to the second-class bit blocks is less than 1 millisecond. The K2 is a positive integer. The second information is used to determine whether the K2 second bit blocks are decoded correctly.

As an embodiment, the second receiving module is further configured to receive K3 wireless signals of the first type. Wherein K3 first class bit blocks are respectively used for generating the K3 first class wireless signals, the K3 being a positive integer. The time domain resources occupied by the K1 first-type wireless signals and the time domain resources occupied by the K3 first-type wireless signals are partially or completely overlapped. HARQ-ACK associated with the K3 blocks of the first type of bits are transmitted in a second time interval. The second time interval is one of the L time intervals and outside the first time interval. The first information is used to determine the location of the second time interval in the L time intervals.

As an embodiment, the first sending module is further configured to send the third information in the second time interval. Wherein the third information is used to determine whether the K3 first class bit blocks are correctly decoded.

According to an aspect of the present application, the above user equipment is characterized in that the first information is used to determine Q carrier sets, the carrier sets include one or more carriers, and Q is a positive integer not greater than L. HARQ-ACKs associated with the first type of wireless signal transmitted in a given subframe over the Q sets of carriers are transmitted in Q time intervals, respectively, the Q time intervals being a subset of the L time intervals. The K1 wireless signals of the first type are transmitted in the given subframe on K1 carriers, respectively. The K1 carriers belong to a first set of carriers, which is one of the Q sets of carriers.

According to an aspect of the present application, the ue is characterized in that the first information includes M first sub information, and the M first sub information respectively corresponds to M carriers. The first sub-information is used to determine time domain resources occupied by HARQ-ACK associated with the first type of wireless signals transmitted on the corresponding carrier within a subframe. The L time intervals belong to one subframe.

The application discloses a base station device supporting HARQ, which comprises the following modules:

-a second sending module: for transmitting first information;

-a third sending module: used for sending K1 first type wireless signals;

-a third receiving module: for receiving second information in a first time interval.

As an embodiment, the third sending module is further configured to send K1 first-type signaling. Wherein the K1 first-type signaling respectively comprise scheduling information of the K1 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first type of signaling includes a first domain only if the number of carriers included in the first set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits in the second information associated with the first type of wireless signal.

As an embodiment, the third sending module is further configured to send K3 first-type signaling. Wherein the K3 first-type signaling respectively comprise scheduling information of the K3 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first domain is included in the first type of signaling only if the number of carriers included in the second set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits associated with the first type of wireless signal in third information. The third information is used to determine whether the K3 first class bit blocks are decoded correctly. The second set of carriers is a set of carriers other than the first set of carriers of the Q sets of carriers.

For an embodiment, the third sending module is further configured to send K2 second-type signaling. Wherein the K2 second-type signaling respectively include scheduling information of the K2 second-type wireless signals. The second type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The second type of signaling comprises a first domain. The first field in the second type of signaling is used to determine the number of HARQ-ACK bits in the second information.

As an embodiment, the third sending module is further configured to send K2 second-type wireless signals. And K2 second-class bit blocks are respectively used for generating the K2 second-class wireless signals, and the transmission time corresponding to the second-class bit blocks is less than 1 millisecond. The K2 is a positive integer. The second information is used to determine whether the K2 second bit blocks are decoded correctly.

As an embodiment, the third sending module is further configured to send K3 wireless signals of the first type. Wherein K3 first class bit blocks are respectively used for generating the K3 first class wireless signals, the K3 being a positive integer. The time domain resources occupied by the K1 first-type wireless signals and the time domain resources occupied by the K3 first-type wireless signals are partially or completely overlapped. HARQ-ACK associated with the K3 blocks of the first type of bits are transmitted in a second time interval. The second time interval is one of the L time intervals and outside the first time interval. The first information is used to determine the location of the second time interval in the L time intervals.

As an embodiment, the third receiving module is further configured to receive the third information in the second time interval. Wherein the third information is used to determine whether the K3 first class bit blocks are correctly decoded.

According to an aspect of the present application, the base station device as described above is characterized in that the first information is used to determine Q carrier sets, the carrier sets include one or more carriers, and Q is a positive integer not greater than L. HARQ-ACKs associated with the first type of wireless signal transmitted in a given subframe over the Q sets of carriers are transmitted in Q time intervals, respectively, the Q time intervals being a subset of the L time intervals. The K1 wireless signals of the first type are transmitted in the given subframe on K1 carriers, respectively. The K1 carriers belong to a first set of carriers, which is one of the Q sets of carriers.

According to an aspect of the present application, the base station device is characterized in that the first information includes M pieces of first sub information, and the M pieces of first sub information correspond to M carriers, respectively. The first sub-information is used to determine time domain resources occupied by HARQ-ACK associated with the first type of wireless signals transmitted on the corresponding carrier within a subframe. The L time intervals belong to one subframe.

Compared with the prior art, the method has the following technical advantages:

by designing the first Information, the HARQ-ACK Information corresponding to the first type of wireless signal is transmitted in the second Information corresponding to the second type of wireless signal, and Uplink feedback of downlink data corresponding to different transmission time intervals is transmitted on a physical channel of a transmission time interval corresponding to the same UCI (Uplink Control Information) format.

By designing the first time interval and the second time interval, when there is more HARQ-ACK information transmitted based on TTI, the HARQ-ACK information may be transmitted at different time intervals of a subframe, so as to reasonably allocate uplink control signaling resources and avoid overload of UCI.

By designing the first field, the UE is facilitated to determine the number and distribution of HARQ-ACK information transmitted based on TTI and HARQ-ACK information transmitted based on sTTI on the second information, and the UE is facilitated to generate corresponding UCI.

Distributing the HARQ-ACKs of all the first type wireless signals on all the carriers configured by the UE to different time intervals by designing the first information and the Q carrier sets, so as to reasonably allocate uplink resources and avoid collision of HARQ-ACKs and overload of UCI.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 shows a flow chart of the transmission of the first information according to an embodiment of the application;

FIG. 2 shows a schematic view of the first information according to an embodiment of the present application;

fig. 3 shows a schematic diagram of time domain resources occupied by the first time interval and the second time interval according to an embodiment of the present application;

FIG. 4 shows a block diagram of a processing device in a UE according to an embodiment of the present application;

fig. 5 shows a block diagram of a processing means in a base station according to an embodiment of the present application;

figure 6 shows a schematic diagram of a time domain resource allocation for HARQ-ACKs for radio signals of the first type over multiple carriers according to an embodiment of the application;

Detailed Description

The technical solutions of the present application will be further described in detail with reference to the accompanying drawings, and it should be noted that the embodiments and features of the embodiments of the present application can be arbitrarily combined with each other without conflict.

Example 1

Embodiment 1 illustrates a flow chart of the transmission of the first information, as shown in fig. 1. In fig. 1, base station N1 is the maintaining base station of the serving cell of UE U2, where the steps in the blocks identified by F0, F1 and F2 are optional.

For theBase station N1Transmitting the first information in step S10; transmitting K1 first type signaling in step S11; transmitting K3 first type signaling in step S12; transmitting K1 first type wireless signals in step S13; transmitting K3 first type wireless signals in step S14; sending K2 second type signaling in step S15; transmitting K2 second-type wireless signals in step S16; receiving second information in a first time interval in step S17; the third information is received in a second time interval in step S18.

For theUE U2Receiving the first information in step S20; receiving K1 first type signaling in step S21; receiving K3 first type signaling in step S22; receiving K1 first-type wireless signals in step S23; receiving K3 first-type wireless signals in step S24; receiving K2 second type signaling in step S25; receiving K2 second-type wireless signals in step S26; transmitting the second time interval in step S27Information; the third information is transmitted in a second time interval in step S28.

As a sub-embodiment, the physical layer Channel corresponding to the first type of signaling is a PDCCH (physical downlink Control Channel) or EPDCCH (Enhanced physical downlink Control Channel).

As a sub-embodiment, the first type of signaling corresponds to DCI of a downlink Grant (Grant).

As a sub-embodiment, the physical layer Channel corresponding to the second type of signaling is an sPDCCH (Short physical Downlink Control Channel).

As a sub-embodiment, the second type of signaling corresponds to a downlink Grant (Grant) DCI.

As a sub-embodiment, the physical layer Channel corresponding to the first type of radio signal is a PDSCH (physical downlink Shared Channel).

As a sub-embodiment, the transmission Channel corresponding to the first type of radio signal is a DL-SCH (downlink shared Channel).

As a sub-embodiment, the Physical layer Channel corresponding to the second type of radio signal is a short Physical Downlink Shared Channel (sPDSCH).

As a sub-embodiment, the transmission channel corresponding to the second type of wireless signal is DL-SCH.

Example 2

Embodiment 2 illustrates a schematic diagram of the first information, as shown in fig. 2. In fig. 2, the first information includes M first sub information, and the M first sub information respectively corresponds to M carriers.

As a sub-embodiment, M is equal to a positive integer greater than 5 and not greater than 32.

As a sub-embodiment, M is equal to a positive integer greater than 32.

Example 3

Embodiment 3 illustrates a schematic diagram of time domain resources occupied by the first time interval and the second time interval, as shown in fig. 3. In fig. 3, the first time interval and the second time interval are orthogonal in the time domain, and the first time interval and the second time interval belong to the same subframe.

As a sub-embodiment, the duration of the first time interval is not equal to the duration of the second time interval.

As a sub-embodiment, the duration of the first time interval is equal to the duration of the second time interval.

As a sub-embodiment, the first time interval and the second time interval are consecutive in the time domain.

As a sub-embodiment, the first time interval and the second time interval constitute one sub-frame. The first time interval and the second time interval are consecutive in the time domain, and both the first time interval and the second time interval occupy 0.5ms in the time domain. The given subframe is a subframe in which the first time interval and the second time interval are located.

Example 4

Embodiment 4 illustrates a block diagram of a processing device in a user equipment, as shown in fig. 5. In fig. 4, the ue processing apparatus 100 mainly comprises a first receiving module 101, a second receiving module 102 and a first sending module 103.

The first receiving module 101: for receiving first information;

-the second receiving module 102: used for receiving K1 first-type wireless signals;

-the first sending module 103: for transmitting the second information in the first time interval.

In embodiment 4, the first information is higher layer signaling, the first time interval is one of L time intervals, and the first information is used to determine the position of the first time interval in the L time intervals, where the L time intervals belong to one subframe. The second information is physical layer signaling. K1 first-class bit blocks are respectively used for generating the K1 first-class wireless signals, and the transmission time corresponding to the first-class bit blocks is 1 millisecond. The second information is used to determine whether the K1 first class bit blocks are decoded correctly. The K1 is a positive integer, and the L is a positive integer greater than 1.

As a sub embodiment, the second receiving module 102 is further configured to receive K1 first-type signaling. Wherein the K1 first-type signaling respectively comprise scheduling information of the K1 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first type of signaling includes a first domain only if the number of carriers included in the first set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits in the second information associated with the first type of wireless signal.

As a sub embodiment, the second receiving module 102 is further configured to receive K3 first-type signaling. Wherein the K3 first-type signaling respectively comprise scheduling information of the K3 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first domain is included in the first type of signaling only if the number of carriers included in the second set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits associated with the first type of wireless signal in third information. The third information is used to determine whether the K3 first class bit blocks are decoded correctly. The second set of carriers is a set of carriers other than the first set of carriers of the Q sets of carriers.

As a sub-embodiment, the second receiving module 102 is further configured to receive K2 second-type signaling. Wherein the K2 second-type signaling respectively include scheduling information of the K2 second-type wireless signals. The second type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The second type of signaling comprises a first domain. The first field in the second type of signaling is used to determine the number of HARQ-ACK bits in the second information.

As a sub-embodiment, the second receiving module 102 is further configured to receive K2 second-type wireless signals. And K2 second-class bit blocks are respectively used for generating the K2 second-class wireless signals, and the transmission time corresponding to the second-class bit blocks is less than 1 millisecond. The K2 is a positive integer. The second information is used to determine whether the K2 second bit blocks are decoded correctly.

As a sub-embodiment, the second receiving module 102 is further configured to receive K3 first-type wireless signals. Wherein K3 first class bit blocks are respectively used for generating the K3 first class wireless signals, the K3 being a positive integer. The time domain resources occupied by the K1 first-type wireless signals and the time domain resources occupied by the K3 first-type wireless signals are partially or completely overlapped. HARQ-ACK associated with the K3 blocks of the first type of bits are transmitted in a second time interval. The second time interval is one of the L time intervals and outside the first time interval. The first information is used to determine the location of the second time interval in the L time intervals.

As a sub embodiment, the first sending module 103 is further configured to send the third information in the second time interval. Wherein the third information is used to determine whether the K3 first class bit blocks are correctly decoded.

Example 5

Embodiment 5 illustrates a block diagram of a processing device in a base station apparatus, as shown in fig. 5. In fig. 5, the base station device processing apparatus 200 mainly comprises a second sending module 202, a third sending module 202 and a third receiving module 203.

The second sending module 201: for transmitting first information;

third sending module 202: used for sending K1 first type wireless signals;

the third receiving module 203: for receiving second information in a first time interval.

In embodiment 5, the first information is higher layer signaling, the first time interval is one of L time intervals, and the first information is used to determine the position of the first time interval in the L time intervals, where the L time intervals belong to one subframe. The second information is physical layer signaling. K1 first-class bit blocks are respectively used for generating the K1 first-class wireless signals, and the transmission time corresponding to the first-class bit blocks is 1 millisecond. The second information is used to determine whether the K1 first class bit blocks are decoded correctly. The K1 is a positive integer, and the L is a positive integer greater than 1.

As a sub-embodiment, the third sending module 202 is further configured to send K1 first-type signaling. Wherein the K1 first-type signaling respectively comprise scheduling information of the K1 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first type of signaling includes a first domain only if the number of carriers included in the first set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits in the second information associated with the first type of wireless signal.

As a sub-embodiment, the third sending module 202 is further configured to send K3 first-type signaling. Wherein the K3 first-type signaling respectively comprise scheduling information of the K3 first-type wireless signals. The first type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The first domain is included in the first type of signaling only if the number of carriers included in the second set of carriers is greater than 5. The first field in the first type of signaling is used to determine a number of HARQ-ACK bits associated with the first type of wireless signal in third information. The third information is used to determine whether the K3 first class bit blocks are decoded correctly. The second set of carriers is a set of carriers other than the first set of carriers of the Q sets of carriers.

As a sub-embodiment, the third sending module 202 is further configured to send K2 second-type signaling. Wherein the K2 second-type signaling respectively include scheduling information of the K2 second-type wireless signals. The second type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }. The second type of signaling comprises a first domain. The first field in the second type of signaling is used to determine the number of HARQ-ACK bits in the second information.

As a sub-embodiment, the third sending module 202 is further configured to send K2 second-type wireless signals. And K2 second-class bit blocks are respectively used for generating the K2 second-class wireless signals, and the transmission time corresponding to the second-class bit blocks is less than 1 millisecond. The K2 is a positive integer. The second information is used to determine whether the K2 second bit blocks are decoded correctly.

As a sub-embodiment, the third sending module 202 is further configured to send K3 wireless signals of the first type. Wherein K3 first class bit blocks are respectively used for generating the K3 first class wireless signals, the K3 being a positive integer. The time domain resources occupied by the K1 first-type wireless signals and the time domain resources occupied by the K3 first-type wireless signals are partially or completely overlapped. HARQ-ACK associated with the K3 blocks of the first type of bits are transmitted in a second time interval. The second time interval is one of the L time intervals and outside the first time interval. The first information is used to determine the location of the second time interval in the L time intervals.

As a sub embodiment, the third receiving module 203 is further configured to receive the third information in the second time interval. Wherein the third information is used to determine whether the K3 first class bit blocks are correctly decoded.

Example 6

Embodiment 6 illustrates a schematic diagram of time domain resource allocation of HARQ-ACK for the first type of wireless signals over multiple carriers, as shown in fig. 6. In fig. 6, the squares filled with diagonal lines are time intervals #1, and the squares filled with cross lines are time intervals # L.

In embodiment 6, the UE is configured with M downlink carriers, which are carriers #1, #2, …, and # M, respectively. The HARQ-ACKs associated with the M downlink carriers are transmitted on the uplink carrier in fig. 6.

The first information in this application includes M pieces of first sub information, where the M pieces of first sub information respectively indicate time domain resources occupied by HARQ-ACKs in subframes associated with first type wireless signals transmitted on carriers #1, #2, …, # M.

As shown in fig. 6, HARQ-ACKs associated with the first type of wireless signal on carrier #1 are transmitted in time interval # L (as indicated by arrow AR 1); HARQ-ACK associated with the first type of wireless signal on carrier #2 is transmitted in time interval # L (as indicated by arrow AR 2); HARQ-ACK associated with the first type of wireless signal on carrier # M is transmitted in time interval #1 (as indicated by arrow AR 3)

As a sub-embodiment of the present application, the occupied time domain resource in the subframe is one of L time intervals, the time interval #1 and the time interval # L are respectively one of the L time intervals, and the L time intervals are located in one subframe.

As a sub-embodiment of the present application, the time interval #1 and the time interval # L are discontinuous.

It will be understood by those skilled in the art that all or part of the steps of the above methods may be implemented by instructing relevant hardware through a program, and the program may be stored in a computer readable storage medium, such as a read-only memory, a hard disk or an optical disk. Alternatively, all or part of the steps of the above embodiments may be implemented by using one or more integrated circuits. Accordingly, the module units in the above embodiments may be implemented in a hardware form, or may be implemented in a form of software functional modules, and the present application is not limited to any specific form of combination of software and hardware. The UE and the terminal in the present application include, but are not limited to, a mobile phone, a tablet computer, a notebook, a vehicle-mounted Communication device, a wireless sensor, a network card, an internet of things terminal, an RFID terminal, an NB-IOT terminal, a Machine Type Communication (MTC) terminal, an enhanced MTC terminal, a data card, a network card, a vehicle-mounted Communication device, a low-cost mobile phone, a low-cost tablet computer, and other wireless Communication devices. The base station in the present application includes, but is not limited to, a macro cell base station, a micro cell base station, a home base station, a relay base station, and other wireless communication devices.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method in a user equipment supporting HARQ, comprising the steps of:

-step a. receiving first information;

-step b. receiving K1 first type radio signals;

-step c. transmitting second information in a first time interval;

wherein the first information is higher layer signaling, the first time interval is one of L time intervals, the first information is used for determining the position of the first time interval in the L time intervals, and the L time intervals belong to one subframe; the second information is physical layer signaling; k1 first-class bit blocks are respectively used for generating the K1 first-class wireless signals, and the transmission time corresponding to the first-class bit blocks is 1 millisecond; the second information is used to determine whether the K1 first class bit blocks are decoded correctly; k1 is a positive integer, and L is 2.

2. A method in a base station supporting HARQ, comprising the steps of:

-step a. sending a first information;

-step b. transmitting K1 first type radio signals;

-step c. receiving second information in a first time interval;

wherein the first information is higher layer signaling, the first time interval is one of L time intervals, the first information is used for determining the position of the first time interval in the L time intervals, and the L time intervals belong to one subframe; the second information is physical layer signaling; k1 first-class bit blocks are respectively used for generating the K1 first-class wireless signals, and the transmission time corresponding to the first-class bit blocks is 1 millisecond; the second information is used to determine whether the K1 first class bit blocks are decoded correctly; k1 is a positive integer, L is 2; and L is 2 or 3.

3. A user equipment supporting HARQ comprises the following modules:

-a first receiving module: for receiving first information;

-a second receiving module: used for receiving K1 first-type wireless signals;

-a first sending module: for transmitting second information in a first time interval;

4. The UE of claim 3, wherein the second receiving module is further configured to receive K2 signaling of the second type; wherein the K2 second-type signaling respectively comprise scheduling information of the K2 second-type wireless signals; the second type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }; the second type of signaling comprises a first domain; the first field in the second type of signaling is used to determine the number of HARQ-ACK bits in the second information; the time domain resources occupied by the second type of radio signal are used to determine the first time interval.

5. The UE of claim 3 or 4, wherein the second receiving module is further configured to receive K3 wireless signals of the first type; wherein K3 first class bit blocks are respectively used for generating the K3 first class wireless signals, the K3 being a positive integer; the time domain resources occupied by the K1 first-type wireless signals and the time domain resources occupied by the K3 first-type wireless signals are partially or completely overlapped; HARQ-ACK associated with the K3 first class bit blocks are transmitted in a second time interval; the second time interval is one of the L time intervals and outside the first time interval; the first information is used to determine the location of the second time interval in the L time intervals.

6. The UE of claim 3, wherein the first information is used to determine Q sets of carriers, the set of carriers comprising one or more carriers, and Q is a positive integer not greater than L; HARQ-ACKs associated with the first type of wireless signal transmitted in a given subframe over the Q sets of carriers are transmitted in Q time intervals, respectively, the Q time intervals being a subset of the L time intervals; the K1 first type wireless signals are transmitted in the given subframe on K1 carriers, respectively; the K1 carriers belong to a first set of carriers, which is one of the Q sets of carriers.

7. The UE of claim 6, wherein the second receiving module is further configured to receive K1 signaling of the first type; wherein the K1 first-type signaling respectively comprise scheduling information of the K1 first-type wireless signals; the first type of signaling is physical layer signaling, and the scheduling information comprises at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }; including a first field in the first type of signaling only if the number of carriers included in the first set of carriers is greater than 5; the first field in the first type of signaling is used to determine a number of HARQ-ACK bits in the second information associated with the first type of wireless signal.

8. The UE of claim 4 or 7, wherein the second receiving module is further configured to receive K2 second-type signaling; wherein the K2 second-type signaling respectively comprise scheduling information of the K2 second-type wireless signals; the second type of signaling is physical layer signaling, and the scheduling information includes at least one of { occupied time-frequency resource, MCS, RV, NDI, HARQ process number }; the second type of signaling comprises a first domain; the first field in the second type of signaling is used to determine the number of HARQ-ACK bits in the second information.

9. The UE of any one of claims 3, 4, 6, and 7, wherein the first information comprises M first sub-information, and the M first sub-information respectively corresponds to M carriers; the first sub-information is used for determining occupied time domain resources of HARQ-ACK (hybrid automatic repeat request-acknowledgement) related to the first type of wireless signals transmitted on corresponding carriers in a subframe; the L time intervals belong to one subframe.

10. A base station device supporting HARQ comprises the following modules:

-a second sending module: for transmitting first information;

-a third sending module: used for sending K1 first type wireless signals;

-a third receiving module: for receiving second information in a first time interval;

11. The base station device of claim 10, wherein the third sending module is further configured to send K2 second-type wireless signals; the K2 second-class bit blocks are respectively used for generating the K2 second-class wireless signals, and the transmission time corresponding to the second-class bit blocks is less than 1 millisecond; the K2 is a positive integer; the second information is used to determine whether the K2 second bit blocks are decoded correctly; the time domain resources occupied by the second type of radio signal are used to determine the first time interval.