CN110445595B

CN110445595B - Low-delay wireless communication method and device

Info

Publication number: CN110445595B
Application number: CN201910688821.1A
Authority: CN
Inventors: 张晓博
Original assignee: Shanghai Langbo Communication Technology Co Ltd
Current assignee: Shanghai Langbo Communication Technology Co Ltd
Priority date: 2015-10-08
Filing date: 2015-10-08
Publication date: 2022-06-21
Anticipated expiration: 2035-10-08
Also published as: WO2017059794A1; CN106571900A; CN106571900B; CN110445595A

Abstract

The invention discloses a low-delay wireless communication method and a low-delay wireless communication device. As an embodiment, the UE receives Q1 type I data and Q2 type II data in step one, and transmits the first information and the second information in step two. Wherein the first information indicates whether a type I transport block of the Q1 type I data is correctly decoded, and the second information indicates whether a type II transport block of the Q2 type II data is correctly decoded. Type I transport blocks correspond to long TTIs and type II transport blocks correspond to short TTIs. The first information corresponds to a first bit sequence and the second information corresponds to a second bit sequence before channel coding. After channel coding, at least 1 bit in the first bit sequence and at least 1 bit in the second bit sequence correspond to the same output sequence. The invention can reduce network delay, improve the transmission efficiency of the PUCCH, and simultaneously keep the compatibility with the existing LTE equipment as far as possible.

Description

Low-delay wireless communication method and device

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

application date of the original application: 10 months and 08 days 2015

- -application number of the original application: 201510646573.6

The invention of the original application is named: low-delay wireless communication method and device

Technical Field

The present invention relates to a transmission scheme in a wireless communication system, and more particularly, to a method and apparatus for low latency transmission based on Long Term Evolution (LTE-Long Term Evolution).

Background

The issue of reducing the delay of the LTE Network is discussed in 3GPP (3rd Generation Partner Project) RAN (Radio Access Network) #63 times overall meeting. The delay of the LTE network includes air interface delay, signal processing delay, transmission delay between nodes, and the like. With the upgrade of the radio access network and the core network, the transmission delay is effectively reduced. With the application of new semiconductors with higher processing speeds, the signal processing delay is significantly reduced.

In LTE, a TTI (Transmission Time Interval) or subframe or prb (physical Resource block) Pair (Pair) corresponds to one ms (milli-second) in Time. One LTE subframe includes two LTE slots (Time slots), which are a first Slot and a second Slot, respectively. A PDCCH (Physical Downlink Control Channel) occupies first R OFDM (Orthogonal Frequency Division Multiplexing) symbols of a PRB pair, where R is a positive integer of not more than 4 and is configured by a PCFICH (Physical Control Format Indicator Channel). For FDD (Frequency Division Duplex) LTE, the HARQ (Hybrid Automatic Repeat reQuest) round-trip time is 8ms, and a small number of HARQ retransmissions will cause network delay of tens of ms. Therefore, reducing the air interface delay becomes an effective means for reducing the delay of the LTE network.

The invention provides a solution to the problem of long air interface delay in LTE. It should be noted that, in case of no conflict, the embodiments and features in the embodiments in the UE (User Equipment) of the present application may be applied to the base station, and vice versa. Further, the embodiments and features of the embodiments of the present application may be arbitrarily combined with each other without conflict.

Disclosure of Invention

To reduce air interface delay, an intuitive approach is to use a short TTI, e.g., 0.5ms TTI. The inventor finds through research that the length of TTI is only a factor of air interface delay, and the delay brought by uplink HARQ-ACK as long as 1ms also significantly affects the air interface delay. Further, the scheme of the shorter uplink HARQ-ACK should be as compatible as possible with the existing LTE equipment.

The present invention provides a solution to the above problems.

The invention discloses a method in UE supporting low-delay wireless communication, which comprises the following steps:

step a. receiving Q1 type I data and Q2 type II data;

-step b. transmitting the first information and the second information.

Wherein the type I data comprises one or more type I transport blocks and the type II data comprises one or more type II transport blocks. The first information indicates whether a type I transport block of the Q1 type I data is correctly decoded, and the second information indicates whether a type II transport block of the Q2 type II data is correctly decoded. Type I transport blocks correspond to long TTIs and type II transport blocks correspond to short TTIs. The duration of the long TTI is 1ms (milliseconds), and the duration of the short TTI is 0.5 ms. The Q1 is a positive integer and the Q2 is a positive integer. The first information corresponds to a first bit sequence and the second information corresponds to a second bit sequence before channel coding. After channel coding, at least 1 bit in the first bit sequence and at least 1 bit in the second bit sequence correspond to the same output sequence.

The essence of the above method is that the HARQ-ACK signaling for indicating a short TTI and the HARQ-ACK signaling for indicating a long TTI can be processed uniformly at the time of channel coding, rather than separately. The method enables the HARQ-ACK signaling for indicating the short TTI and the HARQ-ACK signaling for indicating the long TTI to share the PUCCH resource, and improves the resource utilization rate.

In the conventional scheme, the PUCCH occupied by HARQ-ACK bits for type I data lasts for 1ms in the time domain, while the PUCCH occupied by HARQ-ACK bits for type II data should last for less than 1ms in the time domain (to reduce air interface delay). Thus another essence of the above method is: HARQ-ACK for long TTI is transmitted using PUCCH with duration less than 1ms, thus providing innovations.

The type I transport block corresponds to a long TTI, which means: the type I transport block is transmitted on OFDM (Orthogonal Frequency Division Multiplexing) symbols outside of the reserved time slice in the long TTI. As an embodiment, the reserved time segment includes OFDM symbols for PDCCH (Physical Downlink Control Channel). As one embodiment, the reserved time segment includes time intervals for GP (Guard Period) and UpPTS. As an embodiment, the reserved time segment is empty.

The type II transport block corresponds to a short TTI, which means: the type II transport block is transmitted on OFDM symbols outside the reserved time segment in a short TTI.

As an embodiment, the type I data and the type II data are both transmitted on a PDSCH (Physical Downlink Shared Channel).

As an embodiment, the type I transport block is a transport block in LTE.

As an embodiment, the start time of the long TTI is aligned with the start time of the LTE subframe, i.e. the long TTI is an LTE subframe.

As an embodiment, the start time of the short TTI is aligned with the start time of the LTE slot, i.e. the short TTI is an LTE subframe.

As an embodiment, the start time of the long TTI and the start time of the LTE subframe are not aligned, the long TTI consisting of two short TTIs.

As an embodiment, the first information and the second information are transmitted on a PUCCH (Physical Uplink Control Channel).

As an embodiment, there are at least two types of I data in the Q1 types of I data, and the number of type I transport blocks included in the two types of I data is different.

As an embodiment, there are at least two type II data in the Q2 type II data, and the number of type II transport blocks in the two type II data is different.

As an embodiment, the transport block is a MAC (Medium Access Control) PDU (Protocol Data Unit).

As an embodiment, the Q1 type I data are transmitted in the same long TTI.

Specifically, according to one aspect of the present invention, the third input sequence includes bits in the first bit sequence and bits in the second bit sequence, the third input sequence is subjected to channel coding to generate a third output sequence, the Q2 type II data are transmitted in the first short TTI, and the first information and the second information are transmitted in the second LTE slot.

The advantage of the above aspect is that when the total number of bits in the first bit sequence and the second bit sequence does not exceed 20, separate PUCCH resources do not need to be allocated to the first information and the second information, and overhead of air interface resources is saved.

As an embodiment, the third input sequence further includes an SR (Scheduling Request) bit.

As an embodiment, the first short TTI is the first LTE slot, the second LTE slot is the L1 th LTE slot after the first LTE slot, and L1 is a positive integer. As an example of the L1, the L1 is 4.

As one embodiment, the second LTE slot is the first slot in the LTE subframe (i.e., the previous LTE slot in the LTE subframe).

As an embodiment, the first bit sequence consists of 1 bit.

As an embodiment, the number of PRBs (Physical Resource blocks) occupied by the first information and the second information is determined by the number of bits in the third input sequence.

As an embodiment, the modulation symbol sequence generated by the modulation of the third output sequence occupies 2 PRBs in the second LTE slot. As a sub-embodiment of this embodiment, the number of bits in the third input sequence is less than 22, and the transmission schemes of the modulation symbol sequence generated by the modulation of the third output sequence in the 2 PRBs adopt the format of the PUCCH format 3 in the first slot and the format of the PUCCH format 3 in the second slot, respectively.

As an embodiment, the number of PRBs occupied by the modulation symbol sequence generated by the modulation of the third output sequence is greater than 2, and the number of bits in the third input sequence is greater than 21. As a sub-embodiment of the present embodiment, the total number of carriers occupied by the Q1 type I data and the Q2 type II data is greater than 5.

Specifically, according to one aspect of the present invention, the step B is characterized by comprising the following steps:

-step B0. channel coding a first input sequence to generate a first output sequence, the first input sequence comprising bits of the first sub-sequence of bits and bits of the third sub-sequence of bits; channel coding a second input sequence to generate a second output sequence, the second input sequence comprising bits of the second bit subsequence and bits of the fourth bit subsequence.

Step b1. transmitting the modulation symbols corresponding to the first output sequence in the fifth LTE slot and transmitting the modulation symbols corresponding to the second output sequence in the sixth LTE slot.

Wherein Q3 of the Q2 type II data are transmitted in the third short TTI and Q4 of the Q2 type II data are transmitted in the fourth short TTI. The first bit sequence consists of bits from the first bit sub-sequence and bits from the second bit sub-sequence, and the second bit sequence consists of bits from the third bit sub-sequence and bits from the fourth bit sub-sequence. A third bit subsequence indicates whether the type II transport blocks in the Q3 type II data were correctly decoded, and a fourth bit subsequence indicates whether the type II transport blocks in the Q4 type II data were correctly decoded. The first and second bit subsequences collectively indicate whether a type I transport block of the Q1 type I data was decoded correctly. The third and fourth short TTIs belong to the same long TTI, and the fifth and sixth LTE slots belong to one LTE subframe. The sum of the Q3 and the Q4 is equal to the Q2.

As an example, the sum of the Q3 and the Q4 is equal to the Q2.

As an example, the Q3 and the Q4 are equal and both equal to the quotient of the Q2 divided by 2.

As an embodiment, the number of bits in the first bit sub-sequence and the number of bits in the second bit sub-sequence differ by less than 2. An advantage of this embodiment is that a BLER (Block Error Rate) imbalance due to too large a difference in the number of bits in the first bit subsequence and the second bit subsequence is avoided.

As an embodiment, the number of PRBs occupied by modulation symbols corresponding to the first output sequence is determined by the number of bits in the first input sequence, and the number of PRBs occupied by modulation symbols corresponding to the second output sequence is determined by the number of bits in the second input sequence.

As an embodiment, the modulation symbols corresponding to the first output sequence occupy 2 PRBs in the fifth LTE slot, and the modulation symbols corresponding to the second output sequence occupy 2 PRBs in the sixth LTE slot. As a sub-implementation of this embodiment, the 2 PRBs in the fifth LTE slot are consecutive in the frequency domain, and the 2 PRBs in the fifth LTE slot and the 2 PRBs in the sixth LTE slot form two PRB pairs (Pair). As another sub-embodiment of this embodiment, the number of bits in the first input sequence is less than 22, and the transmission schemes of the modulation symbol sequence generated by the modulation of the first output sequence in the 2 PRBs adopt the format of PUCCH format 3 in the first slot and the format of PUCCH format 3 in the second slot, respectively. As another sub-embodiment of this embodiment, the number of bits in the second input sequence is less than 22, and the transmission schemes of the modulation symbol sequence generated by the modulation of the second output sequence in the 2 PRBs adopt the format of PUCCH format 3 in the first slot and the format of PUCCH format 3 in the second slot, respectively.

Specifically, according to an aspect of the present invention, the step a further includes the steps of:

step A0. receiving Q2 downlink signaling, the Q2 downlink signaling scheduling the Q2 type II data, respectively.

In an embodiment, the Q2 downlink signaling includes at least one of { dynamic scheduling signaling, semi-static scheduling signaling }. As an embodiment, the downlink signaling is physical layer signaling. As an embodiment, the Downlink signaling is DCI (Downlink Control Information) for Downlink scheduling (Grant). As an embodiment, the downlink signaling is in one of DCI formats {1, 1A, 1B, 1C, 1D, 2, 2A, 2B, 2C, 2D }.

Specifically, according to the above aspect of the present invention, the step a further includes the steps of:

step A1. receiving Q2/2 downlink signaling.

And scheduling 2 types of data by one downlink signaling, wherein the 2 types of data are respectively transmitted in two short TTIs.

The above aspect saves the air interface resource occupied by the downlink signaling.

As an embodiment, the 2 types of data of type II are transmitted in 2 short TTIs, respectively, and the 2 short TTIs constitute one long TTI.

The invention discloses a method in a base station for supporting low-delay wireless communication, which comprises the following steps:

step a. sending Q1 type I data and Q2 type II data;

-step b. receiving the first information and the second information.

Wherein the type I data comprises one or more type I transport blocks and the type II data comprises one or more type II transport blocks. The first information indicates whether a type I transport block of the Q1 type I data is correctly decoded, and the second information indicates whether a type II transport block of the Q2 type II data is correctly decoded. Type I transport blocks correspond to long TTIs and type II transport blocks correspond to short TTIs. The duration of the long TTI is 1ms and the duration of the short TTI is 0.5 ms. The Q1 is a positive integer and the Q2 is a positive integer. The first information corresponds to a first bit sequence and the second information corresponds to a second bit sequence before channel coding. After channel coding, at least 1 bit in the first bit sequence and at least 1 bit in the second bit sequence correspond to the same output sequence.

As an embodiment, the Q1 type I data are respectively transmitted in Q1 serving cells, the Q2 type II data are respectively transmitted on Q serving cells, the Q1 serving cells and the Q serving cells have no common serving cell, and the Q is one of { Q2, Q2/2 }.

In the present invention, the serving cell includes at least one carrier.

As an embodiment, the Q1 type I data are respectively transmitted in Q1 serving cells, and at least one of the Q1 serving cells is deployed in an unlicensed spectrum.

As an embodiment, in the Q1 pieces of type I data, at least the start time of the long TTI corresponding to one piece of type I data is aligned with the start time of the LTE subframe, and at least the start time of the long TTI corresponding to another piece of type I data is not aligned with the start time of the LTE subframe.

As an embodiment, in the Q2 type II data, at least the start time of the short TTI corresponding to one type II data is aligned with the start time of the LTE slot, and at least the start time of the short TTI corresponding to another type II data is not aligned with the start time of the LTE slot.

As an embodiment, the first short TTI is the first LTE slot, the second LTE slot is the L1 th LTE slot after the first LTE slot, and L1 is a positive integer.

step B0. is receiving the modulation symbols corresponding to the first output sequence in the fifth LTE slot and the modulation symbols corresponding to the second output sequence in the sixth LTE slot;

-a step b1. channel decoding the first output sequence to generate a first input sequence comprising bits of the first bit sub-sequence and bits of the third bit sub-sequence; channel decoding the second output sequence generates a second input sequence comprising bits in the second bit subsequence and bits in the fourth bit subsequence.

Wherein Q3 of the Q2 type II data are transmitted in the third short TTI and Q4 of the Q2 type II data are transmitted in the fourth short TTI. The first bit sequence consists of bits from the first bit sub-sequence and bits from the second bit sub-sequence, and the second bit sequence consists of bits from the third bit sub-sequence and bits from the fourth bit sub-sequence. A third bit subsequence indicates whether the type II transport blocks in the Q3 type II data were correctly decoded, and a fourth bit subsequence indicates whether the type II transport blocks in the Q4 type II data were correctly decoded. The first and second bit subsequences collectively indicate whether a type I transport block of the Q1 type I data was decoded correctly. The third short TTI and the fourth short TTI belong to the same long TTI, and the fifth LTE slot and the sixth LTE slot belong to one LTE subframe. The sum of the Q3 and the Q4 is equal to the Q2.

step A0. sending Q2 downlink signaling, the Q2 downlink signaling scheduling the Q2 type II data, respectively.

Specifically, according to one aspect of the present invention, the step a further includes the steps of:

step A1, sending Q2/2 downlink signaling.

And one downlink signaling schedules 2 types of data II, and the 2 types of data II are transmitted in two short TTIs respectively.

The invention discloses a user equipment supporting low-delay wireless communication, which comprises the following modules:

a first module: for receiving Q1 type I data and Q2 type II data;

a second module: for transmitting the first information and the second information.

As an embodiment of the foregoing user equipment, the first module is further configured to receive Q2/2 downlink signaling. And one downlink signaling schedules 2 types of data II, and the 2 types of data II are transmitted in two short TTIs respectively.

As an embodiment of the foregoing user equipment, the first module is further configured to receive Q2 downlink signaling, where the Q2 downlink signaling respectively schedule the Q2 type II data.

As an embodiment of the foregoing user equipment, the second module is further configured to:

generating a first output sequence by channel coding a first input sequence, the first input sequence comprising bits of the first bit sub-sequence and bits of the third bit sub-sequence; channel coding a second input sequence to generate a second output sequence, the second input sequence comprising bits of the second bit subsequence and bits of the fourth bit subsequence.

Transmitting the modulation symbols corresponding to the first output sequence in the fifth LTE slot and transmitting the modulation symbols corresponding to the second output sequence in the sixth LTE slot.

Wherein Q3 of the Q2 type II data are transmitted in the third short TTI and Q4 of the Q2 type II data are transmitted in the fourth short TTI. The first bit sequence consists of bits from the first bit sub-sequence and bits from the second bit sub-sequence, and the second bit sequence consists of bits from the third bit sub-sequence and bits from the fourth bit sub-sequence. A third bit subsequence indicates whether the type II transport blocks in the Q3 type II data were correctly decoded, and a fourth bit subsequence indicates whether the type II transport blocks in the Q4 type II data were correctly decoded. The first and second bit subsequences together indicate whether a type I transport block of said Q1 type I data was decoded correctly. The third and fourth short TTIs belong to the same long TTI, and the fifth and sixth LTE slots belong to one LTE subframe. The sum of the Q3 and the Q4 is equal to the Q2.

The invention discloses a base station device supporting low-delay wireless communication, which comprises the following modules:

a first module: for transmitting Q1 type I data and Q2 type II data;

a second module: for receiving the first information and the second information.

As an embodiment of the base station device, the second module is further configured to:

receiving a modulation symbol corresponding to the first output sequence in a fifth LTE time slot, and receiving a modulation symbol corresponding to the second output sequence in a sixth LTE time slot;

channel decoding the first output sequence to generate a first input sequence, the first input sequence comprising bits of the first bit sub-sequence and bits of the third bit sub-sequence; channel decoding the second output sequence generates a second input sequence comprising bits in the second bit subsequence and bits in the fourth bit subsequence.

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

reducing the air interface delay brought by the PUCCH;

HARQ-ACK for short TTI and HARQ-ACK for long TTI can be transmitted in the same PUCCH, improving spectrum utilization efficiency.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:

fig. 1 shows a flowchart of uplink HARQ-ACK transmission according to an embodiment of the present invention;

fig. 2 shows a schematic diagram of the transmission of first information and second information on the same LTE slot according to an embodiment of the present invention;

fig. 3 shows a schematic diagram of a first information transmission on two LTE slots according to an embodiment of the invention;

figure 4 shows a schematic diagram in which the long TTI is a drift TTI according to an embodiment of the invention;

fig. 5 shows a schematic diagram of including multiple type I data on one carrier according to one embodiment of the invention;

FIG. 6 shows a schematic diagram of channel coding according to an embodiment of the invention;

fig. 7 shows a block diagram of a processing device in a UE according to an embodiment of the invention;

fig. 8 shows a block diagram of a processing means in a base station according to an embodiment of the invention;

Detailed Description

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

Example 1

Embodiment 1 illustrates uplink HARQ-ACK transmission, as shown in fig. 1. In fig. 1, base station N1 is the maintaining base station for the serving cell of UE U2, and the steps identified in block F1 are optional steps.

For theBase station N1Q downlink signaling are transmitted in step S10, Q1 type I data and Q2 type II data are transmitted in step S11, and the first information and the second information are received in step S12.

For theUE U2Q downlink signaling are received in step S20, Q1 type I data and Q2 type II data are received in step S21, and the first information and the second information are transmitted in step S22.

In embodiment 1, the Q downlink signaling schedules the Q2 type II data, where the type I data includes one or more type I transport blocks, and the type II data includes one or more type II transport blocks. The first information indicates whether a type I transport block of the Q1 type I data is correctly decoded, and the second information indicates whether a type II transport block of the Q2 type II data is correctly decoded. Type I transport blocks correspond to long TTIs and type II transport blocks correspond to short TTIs. The duration of the long TTI is 1ms and the duration of the short TTI is 0.5 ms. The Q1 is a positive integer and the Q2 is a positive integer. The first information corresponds to a first bit sequence and the second information corresponds to a second bit sequence before channel coding. After channel coding, at least 1 bit in the first bit sequence and at least 1 bit in the second bit sequence correspond to the same output sequence. The Q is Q2 or Q2/2.

As sub-embodiment 1 of embodiment 1, the Q is Q2, and the Q downlink signaling schedules the Q2 type II data, respectively.

As sub-embodiment 2 of embodiment 1, Q is Q2/2, one downlink signaling schedules 2 pieces of the type II data, and the 2 pieces of the type II data are transmitted in two short TTIs located in the same serving cell respectively.

As sub-embodiment 3 of embodiment 1, the Q downlink signaling are Q pieces of DCI for downlink scheduling.

As sub-embodiment 5 of embodiment 1, the transmitting the first information and the second information refers to transmitting a modulation symbol sequence, and the receiving the first information and the second information refers to receiving a modulation symbol sequence. The modulation symbol sequence is formed by modulating an output bit sequence, and the output bit sequence is generated by carrying out channel coding on an input sequence. The input sequence comprises { bits in a first bit sequence, bits in a second bit sequence }.

Example 2

Embodiment 2 illustrates a schematic diagram that the first information and the second information are transmitted on the same LTE timeslot, as shown in fig. 2. In fig. 2, CC identifies a Carrier (Component Carrier), carriers and time intervals occupied by checkers of type I data filled with oblique lines, carriers and time intervals occupied by checkers of type II data filled with reverse oblique lines, and checkers filled with vertical lines are used for transmitting carriers and time intervals of first information and second information.

In embodiment 2, the base station sends Q1 type I data and Q2 type II data to the UE, and the UE sends the first information and the second information to the base station in the second LTE slot on the given carrier.

The Q1 type I data are transmitted on Q1 cells, i.e., the carriers of the cells corresponding to the type I data #0 to the type I data # (Q1-1) are CC #0 to CC # (Q1-1), respectively. The Q2 type II data are transmitted on Q2 cells, i.e., the carriers of the cells corresponding to the type II data #0 to the type II data # (Q2-1) are CC # Q1 to CC # (Q1+ Q2-1). The Q1 type I data are transmitted in the same long TTI, and the Q2 type II data are transmitted in the first short TTI. The type I data includes one or more type I transport blocks and the type II data includes one or more type II transport blocks. The first information indicates whether a type I transport block of the Q1 type I data is correctly decoded, and the second information indicates whether a type II transport block of the Q2 type II data is correctly decoded. The duration of the long TTI is 1ms and the duration of the short TTI is 0.5 ms. The Q1 is a positive integer and the Q2 is a positive integer. The first information corresponds to a first bit sequence and the second information corresponds to a second bit sequence before channel coding. After channel coding, the first bit sequence and the second bit sequence correspond to the same output sequence, that is, the output sequence is obtained by channel coding an input sequence, and the input sequence comprises the first bit sequence and the second bit sequence.

As sub-embodiment 1 of embodiment 2, the sum of the number of bits in the first bit sequence and the number of bits in the second bit sequence is less than 21, and the first information and the second information are transmitted on PUCCH format 3.

As sub-embodiment 2 of the embodiment 2, the long TTI corresponds to an LTE subframe, the short TTI corresponds to an LTE slot, the long TTIs occupied by Q1 type I data are first subframes, the subframes to which the short TTIs occupied by Q2 type II data belong are second subframes, the subframes to which the LTE slots occupied by the first information and the second information belong are third subframes, the third subframe is a 4 th subframe after the first subframe, the third subframe is an L-th subframe after the second subframe, and L is less than 4.

As a sub-embodiment 3 of the embodiment 2, the input sequence further includes an SR (Scheduling Request) bit.

As a sub-embodiment 4 of the embodiment 2, the channel coding is RM (Reed-Muller) coding adopted by LTE PUCCH format 3, the number of bits in the input sequence is not more than 22, and the number of bits in the output sequence is 48.

As a sub-embodiment 5 of the embodiment 2, the given carrier is an uplink carrier, or is a TDD (Time Duplex Division) carrier, or is a carrier deployed in an unlicensed spectrum.

Example 3

Embodiment 3 illustrates a schematic diagram of transmission of first information on two LTE slots, as shown in fig. 3. In fig. 3, CC identifies a carrier, a carrier and a time interval occupied by square grid identification type I data filled with oblique lines, a carrier and a time interval occupied by square grid identification type II data filled with reverse oblique lines, a square grid identification filled with black dots is used for transmitting a carrier and a time interval of a first output sequence, and a square grid identification filled with vertical lines is used for transmitting a carrier and a time interval of a second output sequence.

The base station firstly sends Q1 type I data and Q2 type II data; then receiving a modulation symbol modulated by the first output sequence in a fifth LTE time slot on the given carrier, and receiving a modulation symbol modulated by the second output sequence in a sixth LTE time slot on the given carrier; and finally, carrying out channel decoding on the first output sequence to generate a first input sequence and carrying out channel decoding on the second output sequence to generate a second input sequence.

The UE firstly receives Q1 types I data and Q2 types II data; then, carrying out channel coding on the first input sequence to generate a first output sequence and carrying out channel coding on the second input sequence to generate a second output sequence; and finally, transmitting a modulation symbol modulated by the first output sequence in a fifth LTE time slot, and transmitting a modulation symbol modulated by the second output sequence in a sixth LTE time slot.

In embodiment 3, the first input sequence comprises bits of the first bit sub-sequence and bits of the third bit sub-sequence, and the second input sequence comprises bits of the second bit sub-sequence and bits of the fourth bit sub-sequence.

In embodiment 3, the Q1 type I data are transmitted in the same long TTI on the Q1 serving cells, i.e., the carriers of the serving cells corresponding to the type I data #0 to the type I data # (Q1-1) are CC #0 to CC # (Q1-1), respectively. The Q2 type II data are transmitted on Q2/2 serving cells, respectively, i.e., { #0, #2, #4, …, # (Q2-2) } type II data are transmitted on the third short TTI on CC # Q1 to CC # (Q1+ Q2/2-1), respectively, and type II data { #1, #3, #5, …, # (Q2-1) } type II data are transmitted on the fourth short TTI on CC # Q1 to CC # (Q1+ Q2/2-1), respectively.

In embodiment 3, the type I data includes one or more type I transport blocks, and the type II data includes one or more type II transport blocks. The first information indicates whether a type I transport block of the Q1 type I data is correctly decoded, and the second information indicates whether a type II transport block of the Q2 type II data is correctly decoded. The duration of the long TTI is 1ms and the duration of the short TTI is 0.5 ms. The Q1 is a positive integer and the Q2 is a positive integer. The first information corresponds to a first bit sequence and the second information corresponds to a second bit sequence before channel coding.

In embodiment 3 the first bit sequence consists of bits from the first bit sub-sequence and bits from the second bit sub-sequence, and the second bit sequence consists of bits from the third bit sub-sequence and bits from the fourth bit sub-sequence. The third bit subsequence indicates whether the type II transport blocks in the type II data { #0, #2, #4, …, # (Q2-2) } were correctly decoded, and the fourth bit subsequence indicates whether the type II transport blocks in the type II data { #1, #3, #5, …, # (Q2-1) } were correctly decoded. The first and second bit subsequences collectively indicate whether a type I transport block of the Q1 type I data was decoded correctly. The third and fourth short TTIs belong to the same long TTI, and the fifth and sixth LTE slots belong to one LTE subframe.

As sub embodiment 1 of embodiment 3, at least one of { first input sequence, second input sequence } further includes an SR (Scheduling Request) bit.

As sub-embodiment 2 of embodiment 3, the first input sequence includes a bit sequence in which a first bit subsequence and a third bit subsequence are concatenated, and the second input sequence includes a bit sequence in which a second bit subsequence and a fourth bit subsequence are concatenated.

As sub-embodiment 3 of embodiment 3, the number of bits in the first bit sub-sequence and the second bit sub-sequence is equal, or the number of bits in the first bit sub-sequence and the second bit sub-sequence differs by 1.

As a sub-embodiment 4 of the embodiment 3, the Q1 type I data includes M1 type I transport blocks in total, and each type I data includes 1 or 2 type I transport blocks. The first bit sequence comprises M1 bits, wherein each bit indicates whether a type I transport block is decoded correctly. The M1 is greater than or equal to Q1 and less than or equal to 2 times Q1. As a sub-embodiment of sub-embodiment 4 of said embodiment 3, said M1 is less than or equal to 20.

As a sub-embodiment 5 of the embodiment 3, the Q2 type II data includes M2 type II transport blocks in total, and each type II data includes 1 or 2 type II transport blocks. The second bit sequence includes M2 bits, where each bit indicates whether a type II transport block is decoded correctly. The M2 is greater than or equal to Q2 and less than or equal to 2 times Q2. As a sub-embodiment of sub-embodiment 5 of said embodiment 3, said M2 is less than or equal to 20.

As a sub-embodiment 6 of the embodiment 3, the Q1 types of data include M3 types of I transport blocks in total, and each type of I data includes 1 or 2 types of I transport blocks. The first bit sequence includes Q1 bits, and the Q1 bits respectively indicate whether all the type I transport blocks in the Q1 type I data are correctly decoded (i.e., if one type I transport block in one type I data cannot be correctly decoded, the corresponding bit indicates NACK). The M3 is greater than or equal to Q1 and less than or equal to 2 times Q1. As a sub-embodiment of sub-embodiment 6 of said embodiment 3, said M3 is greater than 20.

As a sub-embodiment 7 of the embodiment 3, the Q2 type II data include M4 type II transport blocks in total, and each type II data includes 1 or 2 type II transport blocks. The second bit sequence comprises Q2 bits, and the Q2 bits respectively indicate whether all the type II transport blocks in the Q2 type II data are correctly decoded. The M4 is greater than or equal to Q2 and less than or equal to 2 times Q2. As a sub-embodiment of sub-embodiment 7 of said embodiment 3, said M4 is greater than 20.

As a sub-embodiment 8 of the above-mentioned embodiment 3, the first bit sequence is formed by concatenating a first bit subsequence and a second bit subsequence, and the second bit sequence is formed by concatenating a third bit subsequence and a fourth bit subsequence.

Example 4

Embodiment 4 illustrates a schematic diagram in which the long TTI is a drifting TTI, as shown in fig. 4. In fig. 4, CC identifies the carrier, and the squares filled with diagonal lines identify the carrier and the time interval occupied by the type I data.

In embodiment 4, the Q1 type I data are transmitted on Q1 cells, i.e., the carriers of the cells corresponding to the type I data #0 to the type I data # (Q1-1) are CC #0 to CC # (Q1-1), respectively. The type I data #0 is transmitted in an LTE subframe, the long TTI occupied by the type I data # (Q1-1) is a drifting TTI, namely, the starting time of the long TTI occupied by the type I data # (Q1-1) is not aligned with the starting time of the LTE subframe.

As sub-embodiment 1 of embodiment 4, CC # (Q1-1) is deployed in unlicensed spectrum.

Example 5

Embodiment 5 illustrates a schematic diagram including a plurality of types I data on one carrier, as shown in fig. 5. In fig. 5, CC identifies the carrier, and the squares filled with diagonal lines identify the carrier and the time interval occupied by the type I data.

In embodiment 5, the Q1 type I data in the present invention are transmitted on a total of Q1-1 serving cells. Wherein type I data { #1, #2} is transmitted on CC # 1.

As sub-embodiment 1 of embodiment 5, CC #1 is a TDD carrier.

Example 6

Embodiment 6 illustrates a schematic diagram of channel coding, as attachedAs shown in fig. 6. In FIG. 6, bit sequence b₀ b₁ … b_t-1Is a channel-coded input sequence, a bit sequence

Is the output sequence of the channel coding.

As sub-embodiment 1 of embodiment 6, the channel coding in fig. 6 adopts channel coding of PUCCH format 3 in LTE, that is, RM coding, and the total output bits after puncturing are 48 bits, that is, the subscript r is 47.

As sub-embodiment 2 of embodiment 6, the channel coding employs convolutional coding.

Sub-examples 3, b as example 6₀ b₁ … b_t-1Including the bits in the first bit sequence and the bits in the second bit sequence of the present invention.

Is the third output sequence in the present invention.

Sub-examples 4, b as example 6₀ b₁ … b_t-1Corresponding to the first input sequence and the second input sequence, respectively, in the present invention, accordingly,

respectively corresponding to the first output sequence and the second output sequence in the present invention.

Example 7

Embodiment 7 illustrates a block diagram of a processing device in a UE, as shown in fig. 7. In fig. 7, the UE processing apparatus 200 mainly includes a receiving module 201 and a transmitting module 202.

The receiving module 201 is configured to receive Q1 type I data and Q2 type II data. The sending module 202 is configured to send the first information and the second information.

In embodiment 7, the type I data includes one or more type I transport blocks, and the type II data includes one or more type II transport blocks. The first information indicates whether a type I transport block of the Q1 type I data is correctly decoded, and the second information indicates whether a type II transport block of the Q2 type II data is correctly decoded. Type I transport blocks correspond to long TTIs and type II transport blocks correspond to short TTIs. The duration of the long TTI is 1ms, and the duration of the short TTI is 0.5 ms. The Q1 is a positive integer and the Q2 is a positive integer. The first information corresponds to a first bit sequence and the second information corresponds to a second bit sequence before channel coding. After channel coding, at least 1 bit in the first bit sequence and at least 1 bit in the second bit sequence correspond to the same output sequence.

In embodiment 7, the number of bits in the first bit sequence is equal to the number of type I transport blocks in the Q1 type I data, where each bit indicates whether 1 type I transport block is correctly decoded, and the number of bits in the second bit sequence is equal to the number of type II transport blocks in the Q2 type II data, where each bit indicates whether 1 type II transport block is correctly decoded.

As sub-embodiment 1 of embodiment 7, the receiving module 201 is further configured to:

receiving Q2 downlink signaling, where the Q2 downlink signaling schedules the Q2 type II data, respectively;

receive Q2/2 downlink signaling. And one downlink signaling schedules 2 types of data II, and the 2 types of data II are transmitted in two short TTIs respectively.

Example 8

Embodiment 8 illustrates a block diagram of a processing apparatus in a base station, as shown in fig. 8. In fig. 8, the base station processing apparatus 300 mainly comprises a transmitting module 301 and a receiving module 302.

The transmitting module 301 is configured to transmit Q1 type I data and Q2 type II data on the PDSCH, and the receiving module 302 is configured to receive the first information and the second information on the PUCCH.

In embodiment 8, the type I data includes one or more type I transport blocks, and the type II data includes one or more type II transport blocks. The first information indicates whether a type I transport block of the Q1 type I data is correctly decoded, and the second information indicates whether a type II transport block of the Q2 type II data is correctly decoded. Type I transport blocks correspond to long TTIs and type II transport blocks correspond to short TTIs. The duration of the long TTI is 1ms and the duration of the short TTI is 0.5 ms. The Q1 is a positive integer and the Q2 is a positive integer. The first information corresponds to a first bit sequence and the second information corresponds to a second bit sequence before channel coding. After channel coding, at least 1 bit in the first bit sequence and at least 1 bit in the second bit sequence correspond to the same output sequence.

As sub-embodiment 1 of embodiment 8, the detailed step of receiving the first information and the second information on the PUCCH includes:

receiving a modulation symbol corresponding to the first output sequence in a fifth LTE slot and receiving a modulation symbol corresponding to the second output sequence in a sixth LTE slot;

generating a first input sequence by channel decoding the first output sequence, the first input sequence comprising bits of the first bit sub-sequence and bits of the third bit sub-sequence; channel decoding the second output sequence generates a second input sequence comprising bits in the second bit subsequence and bits in the fourth bit subsequence.

Wherein Q3 of the Q2 type II data are transmitted in the third short TTI and Q3 of the Q2 type II data are transmitted in the fourth short TTI. The first bit sequence consists of bits from the first bit sub-sequence and bits from the second bit sub-sequence, and the second bit sequence consists of bits from the third bit sub-sequence and bits from the fourth bit sub-sequence. A third bit subsequence indicates whether the type II transport blocks in the Q3 type II data were decoded correctly, and a fourth bit subsequence indicates whether the type II transport blocks in the Q3 type II data were decoded correctly. The first and second bit subsequences together indicate whether a type I transport block of said Q1 type I data was decoded correctly. The third short TTI and the fourth short TTI belong to the same long TTI, and the fifth LTE slot and the sixth LTE slot belong to one LTE subframe. The Q3 is the quotient of the Q2 divided by 2.

As sub-embodiment 2 of embodiment 8, both type I transport blocks and type II transport blocks are MAC PDUs.

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 or the mobile terminal in the present invention includes, but is not limited to, a mobile phone, a tablet computer, a notebook, a network card, a vehicle-mounted communication device, a wireless sensor, and other wireless communication devices. The base station in the present invention 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 invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method in a user equipment supporting low-delay wireless communication, comprising the steps of:

step a. receiving Q1 type I data and Q2 type II data;

-step b. transmitting the first information and the second information on one PUCCH;

wherein the type I data comprises one or more type I transport blocks and the type II data comprises one or more type II transport blocks; first information indicating whether a type I transport block of the Q1 type I data is correctly decoded, second information indicating whether a type II transport block of the Q2 type II data is correctly decoded; type I transport blocks correspond to long TTIs, type II transport blocks correspond to short TTIs; the duration of the long TTI is 1ms, and the duration of the short TTI is 0.5 ms; the Q1 is a positive integer, the Q2 is a positive integer; before channel coding, the first information corresponds to a first bit sequence, and the second information corresponds to a second bit sequence; after channel coding, at least 1 bit in the first bit sequence and at least 1 bit in the second bit sequence correspond to the same output sequence.

2. The method of claim 1, wherein the third input sequence comprises bits in the first bit sequence and bits in the second bit sequence, wherein the third input sequence is channel coded to generate a third output sequence, wherein the Q2 type II data are transmitted in the first short TTI, and wherein the first information and the second information are transmitted in the second LTE time slot.

3. The method of claim 1, wherein step B consists of:

-step B0. channel coding a first input sequence to generate a first output sequence, the first input sequence comprising bits of the first sub-sequence of bits and bits of the third sub-sequence of bits; performing channel coding on a second input sequence to generate a second output sequence, wherein the second input sequence comprises bits in a second bit subsequence and bits in a fourth bit subsequence;

step b1. transmitting the modulation symbols corresponding to the first output sequence in the fifth LTE time slot and transmitting the modulation symbols corresponding to the second output sequence in the sixth LTE time slot;

wherein Q3 of the Q2 type II data are transmitted in a third short TTI and Q4 of the Q2 type II data are transmitted in a fourth short TTI; the first bit sequence consists of bits in the first bit subsequence and bits in the second bit subsequence, and the second bit sequence consists of bits in the third bit subsequence and bits in the fourth bit subsequence; a third bit subsequence indicates whether a type II transport block of the Q3 type II data was correctly decoded, and a fourth bit subsequence indicates whether a type II transport block of the Q4 type II data was correctly decoded; the first and second bit subsequences collectively indicate whether a type I transport block in the Q1 type I data blocks was decoded correctly; the third short TTI and the fourth short TTI belong to the same long TTI, and the fifth LTE time slot and the sixth LTE time slot belong to one LTE subframe; the sum of the Q3 and the Q4 is equal to the Q2.

4. The method according to claim 1 or 2, wherein said step a further comprises the steps of:

step A0. receives Q2 downlink signalings, said Q2 downlink signalings scheduling said Q2 type II data, respectively.

5. A method according to claim 1, 2 or 3, wherein said step a further comprises the steps of:

step A1, receiving Q2/2 downlink signaling;

6. A method in a base station supporting low-delay wireless communication, comprising the steps of:

step a. sending Q1 type I data and Q2 type II data;

-step b. receiving the first information and the second information on one PUCCH;

7. The method of claim 6, wherein the third input sequence comprises bits in the first bit sequence and bits in the second bit sequence, wherein the third input sequence is channel coded to generate a third output sequence, wherein the Q2 type II data are transmitted in the first short TTI, and wherein the first information and the second information are transmitted in the second LTE slot.

8. The method of claim 6, wherein step B consists of:

-a step b1. channel decoding the first output sequence to generate a first input sequence comprising bits of the first bit sub-sequence and bits of the third bit sub-sequence; performing channel decoding on the second output sequence to generate a second input sequence, wherein the second input sequence comprises bits in the second bit subsequence and bits in the fourth bit subsequence;

wherein Q3 of the Q2 type II data are transmitted in a third short TTI, and Q4 of the Q2 type II data are transmitted in a fourth short TTI; the first bit sequence consists of bits in the first bit subsequence and bits in the second bit subsequence, and the second bit sequence consists of bits in the third bit subsequence and bits in the fourth bit subsequence; a third bit subsequence indicates whether a type II transport block of the Q3 type II data was correctly decoded, and a fourth bit subsequence indicates whether a type II transport block of the Q4 type II data was correctly decoded; the first and second bit subsequences collectively indicate whether a type I transport block of the Q1 type I data was decoded correctly; the third short TTI and the fourth short TTI belong to the same long TTI, and the fifth LTE time slot and the sixth LTE time slot belong to one LTE subframe; the sum of the Q3 and the Q4 is equal to the Q2.

9. The method according to any one of claims 6 or 7, wherein the step A further comprises the steps of:

10. The method of claim 6, 7 or 8, wherein step a further comprises the steps of:

step A1, sending Q2/2 downlink signaling;

11. A user equipment supporting low-delay wireless communication, comprising:

a first module: for receiving Q1 type I data and Q2 type II data;

a second module: for transmitting the first information and the second information on one PUCCH;

12. The user equipment supporting low latency wireless communications according to claim 11, wherein the third input sequence includes bits in the first bit sequence and bits in the second bit sequence, the third input sequence is channel coded to generate a third output sequence, the Q2 type II data are transmitted in the first short TTI, and the first information and the second information are transmitted in the second LTE slot.

13. The user equipment supporting low-latency wireless communication according to claim 11, wherein the second module further comprises:

-channel coding a first input sequence to generate a first output sequence, the first input sequence comprising bits of the first bit sub-sequence and bits of the third bit sub-sequence; performing channel coding on a second input sequence to generate a second output sequence, wherein the second input sequence comprises bits in a second bit subsequence and bits in a fourth bit subsequence;

-transmitting modulation symbols corresponding to the first output sequence in a fifth LTE slot and transmitting modulation symbols corresponding to the second output sequence in a sixth LTE slot;

14. The user equipment supporting low latency wireless communications according to claim 11 or 12, wherein the first module receives Q2 downlink signaling, the Q2 downlink signaling scheduling the Q2 type II data, respectively.

15. The user equipment supporting low-latency wireless communication according to claim 11, 12 or 13, wherein the first module further receives Q2/2 downlink signaling;

16. A base station device supporting low-delay wireless communication, comprising:

a first module: for transmitting Q1 type I data and Q2 type II data;

a second module: for receiving first information and second information on one PUCCH;

wherein the type I data comprises one or more type I transport blocks and the type II data comprises one or more type II transport blocks; first information indicates whether a type I transport block of the Q1 type I data is correctly decoded, second information indicates whether a type II transport block of the Q2 type II data is correctly decoded; type I transport blocks correspond to long TTIs, type II transport blocks correspond to short TTIs; the duration of the long TTI is 1ms, and the duration of the short TTI is 0.5 ms; the Q1 is a positive integer, the Q2 is a positive integer; before channel coding, the first information corresponds to a first bit sequence, and the second information corresponds to a second bit sequence; after channel coding, at least 1 bit in the first bit sequence and at least 1 bit in the second bit sequence correspond to the same output sequence.

17. The base station device capable of supporting low latency wireless communications of claim 16, wherein a third input sequence comprises bits in the first bit sequence and bits in the second bit sequence, wherein the third input sequence is channel coded to generate a third output sequence, wherein the Q2 type II data are transmitted in a first short TTI, and wherein the first information and the second information are transmitted in a second LTE time slot.

18. The base station device supporting low-latency wireless communications of claim 16, wherein the second module further comprises:

-receiving modulation symbols corresponding to the first output sequence in a fifth LTE slot and receiving modulation symbols corresponding to the second output sequence in a sixth LTE slot;

-channel decoding the first output sequence to generate a first input sequence comprising bits of the first bit sub-sequence and bits of the third bit sub-sequence; performing channel decoding on the second output sequence to generate a second input sequence, wherein the second input sequence comprises bits in the second bit subsequence and bits in the fourth bit subsequence;

wherein Q3 of the Q2 type II data are transmitted in a third short TTI and Q4 of the Q2 type II data are transmitted in a fourth short TTI; the first bit sequence is composed of bits from the first bit subsequence and bits from the second bit subsequence, and the second bit sequence is composed of bits from the third bit subsequence and bits from the fourth bit subsequence; a third bit subsequence indicates whether a type II transport block of the Q3 type II data was correctly decoded, and a fourth bit subsequence indicates whether a type II transport block of the Q4 type II data was correctly decoded; the first and second bit subsequences collectively indicate whether a type I transport block in the Q1 type I data blocks was decoded correctly; the third short TTI and the fourth short TTI belong to the same long TTI, and the fifth LTE time slot and the sixth LTE time slot belong to one LTE subframe; the sum of the Q3 and the Q4 is equal to the Q2.

19. A base station device supporting low delay wireless communication according to claim 16 or 17, wherein said first module further:

-sending Q2 downlink signallings, the Q2 downlink signallings scheduling the Q2 type II data, respectively.

20. A base station device supporting low latency wireless communications according to claim 16, 17 or 18, wherein the first module is further configured to:

-sending Q2/2 downlink signalling;