WO2018010587A1

WO2018010587A1 - Method and apparatus in wireless transmission

Info

Publication number: WO2018010587A1
Application number: PCT/CN2017/091921
Authority: WO
Inventors: 张晓博
Original assignee: 上海朗帛通信技术有限公司
Priority date: 2016-07-15
Filing date: 2017-07-06
Publication date: 2018-01-18
Also published as: CN110995629B; CN110995629A; CN107623649B; CN107623649A

Abstract

Disclosed in the present invention are a method and apparatus in wireless transmission. A UE determines a first sequence first, and then operates a first wireless signal. The first wireless signal occupies a first time interval on a time domain, the duration of the first time interval is shorter than 1 millisecond, the first sequence is associated with at least one of a first parameter and a second parameter, the first parameter is associated with the time domain position of the first time interval, and the second parameter is configurable. The operation is sending. The first sequence is used for scrambling a first bit block, and the first bit block is used for generating the first wireless signal; or the operation is reception, and the first sequence is used for descrambling the first bit block. The present invention can provide provide a solution for randomizing the interference on a wireless signal mapped to a time interval less than 1 millisecond, thereby improving the robustness of signal transmission.

Description

Method and device in wireless transmission

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 LTE-Long Term Evolution.

Background technique

In the 3rd Generation Partnership Project (3rd Generation Partner Project) RAN (Radio Access Network) #63 plenary meeting, it was decided to study the problem of reducing the delay of the LTE network. The delay of the LTE network includes air interface delay, signal processing delay, and transmission delay between nodes. With the upgrade of the wireless access network and the core network, the transmission delay is effectively reduced. With the application of new semiconductors with higher processing speeds, signal processing delays are significantly reduced. At the RAN#72 plenary meeting, based on previous research results, 3GPP decided to standardize the shortened TTI (Transmission Time Interval) and signal processing delay.

In an existing LTE system, one TTI or a subframe or a Physical Resource Block (PB) corresponds in time to 1 ms (milli-second). In order to reduce the network delay, 3GPP decides to standardize a shorter TTI, such as introducing two OFDM (Orthogonal Frequency Division Multiplexing) symbols or one in the LTE FDD (Frequency Division Duplexing) system. The downlink TTI length of the slot, the uplink TTI length of 2 OFDM symbols, 4 OFDM symbols, or 1 slot. The TTI length of one slot is introduced in the downlink on the LTE TDD (Time Division Duplexing) system.

LTE is a wireless communication system with limited interference. In order to randomize interference and improve transmission performance, most of the physical channels in LTE are scrambled before modulation. The scrambling code used is a 31-order Gold sequence and the generator of the scrambling code is re-initialized in each subframe, ie the initial scrambling sequence is linearly related to the subframe number within a radio frame.

Summary of the invention

After the introduction of a short TTI, such as a short TTI of 2 OFDM symbols, the existing scrambling code The initialization method, that is, re-initialization every frame, cannot randomize the interference between short TTIs, which may cause the uplink and downlink transmissions to continuously receive strong interference in multiple short TTIs.

In order to reduce the air interface delay, an intuitive method is to design a new TTI less than 1 ms to be included in the existing LTE subframe, so that a plurality of TTIs less than 1 ms can be included in one existing LTE subframe. If the channel transmitted in less than 1 ms TTI is scrambled according to the scrambling code sequence generation method in the existing LTE, a plurality of TTI transmissions less than 1 ms in one subframe are used in the radio frame. The sub-frame number is initialized to the scrambling code sequence, so that the interference randomization cannot be performed between the TTIs less than 1 ms, which may cause the uplink and downlink transmissions to be continuously introduced or subjected to strong interference in a plurality of TTIs less than 1 ms to degrade the transmission performance. The present invention therefore discloses a solution that can provide interference randomization for transmissions in TTIs less than 1 ms.

The present invention provides a solution to the problem of interference randomization that LTE exists after introducing a short TTI. It should be noted that, in the case of no conflict, the features in the embodiments and embodiments in the UE (User Equipment) of the present application can be applied to the base station, and vice versa. Further, the features of the embodiments and the embodiments of the present application may be combined with each other arbitrarily without conflict.

The invention discloses a method used in a UE with low delay, which comprises the following steps:

- Step A. Determine the first sequence

- Step B. Operating the first wireless signal.

The first wireless signal occupies a first time interval in the time domain, the duration of the first time interval is less than 1 millisecond, and the first sequence and at least one of the {first parameter, the second parameter} One is related. The first parameter and {the first time interval are in a time domain position in the first time unit, and the first time unit is related to at least a former in a time domain position in the first time window}, The second parameter is configurable. The duration of the first time unit is less than or equal to 1 millisecond, and the duration of the first time window is greater than 1 millisecond. The operation is transmission, the first sequence is used for a scrambling code of a first bit block, the first bit block is used to generate the first wireless signal; or the operation is reception, the first The sequence is used for descrambling of the first block of bits.

The above method randomizes the interference introduced or received between time intervals TTI less than 1 millisecond by scrambling and descrambling the signal, thereby improving the robustness of signal transmission.

As an embodiment, the first wireless signal is used to acquire the first block of bits.

As an embodiment, the first sequence comprises a positive integer number of bits.

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

As an embodiment, the first block of bits includes an output of a code block after channel coding. As a sub-embodiment, the code block is a TB (Transport Block). As a sub-embodiment, the code block is part of a TB (Transport Block).

In one embodiment, the operation is to send, and the transport channel corresponding to the first wireless signal is an uplink shared channel (UL-SCH) that is mapped to the first time interval. As a sub-embodiment, if the uplink shared channel in the first time interval carries placeholder bits of an ACK/NACK indication or a Rank Indication, the first wireless signal corresponds to the location The placeholder bit is a fixed signal "1". As another sub-embodiment, if the uplink shared channel of the first time interval of the mapping carries an ACK/NACK indication or a Rank Indication Repetition, the first wireless signal corresponds to the Any one of the placeholder bits is the same as the first wireless signal of the previous bit of the bit.

In one embodiment, the operation is to receive, and the transport channel corresponding to the first wireless signal is a downlink shared channel (DL-SCH, Downlink Shared Channel) mapped in the first time interval.

As an embodiment, the operation is received, and the first wireless signal is correspondingly mapped to a downlink physical control channel (PDCCH, Physical Downlink Control CHannel) in the first time interval.

In one embodiment, the operation is to receive, and the transport channel corresponding to the first wireless signal is a multicast channel (MCH, Multicast CHannel) mapped in the first time interval.

In one embodiment, the operation is receiving, and the first wireless signal is correspondingly mapped to a Physical Control Format Indicator Channel (PCFICH) of the first time interval.

As an embodiment, the first bit block sequentially passes through a Modulation Mapper, a Layer Mapper, a Precoding, a Resource Element Mapper, and an OFDM signal generation. The first wireless signal is then obtained.

As an embodiment, the first time interval includes R OFDM symbols, the OFDM symbols include a cyclic prefix, and the R is a positive integer. As a sub-embodiment, the R is one of {2, 4, 7}.

As an embodiment, the first time unit is a subframe, and the first time window is a radio frame.

As an embodiment, the first time window includes a positive integer number of time units, and the first time unit is one of the positive integer number of time units.

As an embodiment, the duration of the first time unit is 1 millisecond, and the duration of the first time window is a positive integer multiple of the duration of the first time unit.

As an embodiment, the first time unit is a TS (Time Slot).

As an embodiment, the duration of the first time interval is less than or equal to 0.5 milliseconds.

In one embodiment, the first time unit includes T time intervals, the first time interval is one of the T time intervals, and the T is a positive integer greater than one. As an embodiment, the duration of at least two of the T time intervals is different. As an embodiment, the durations of the T time intervals are the same.

As an embodiment, for the first time unit, the second parameter is only applied to the first time interval. As a sub-embodiment, the second parameter is applied to at least one time interval outside of the first time unit. As a sub-embodiment, the second parameter can only be applied to the first time interval.

In an embodiment, the time domain position in the first time unit of the first time interval includes {the time domain start position of the first time interval in the first time unit, the first A time interval is at least one of a time domain termination position in the first time unit, a length of the duration of the first time interval.

As an embodiment, the first time unit is one subframe.

As an embodiment, the first time unit is a radio frame.

As an embodiment, the first time unit is a time unit composed of a plurality of consecutive subframes.

Specifically, according to an aspect of the present invention, the above method is characterized by further comprising the steps of:

Step A0. Receive first signaling, the first signaling being used to determine the second parameter.

As an embodiment, the step A0 further includes the following steps:

Step A10. Initializing the first sequence generator at a starting point of the first time interval using an initial value of the generator of the first sequence.

As an embodiment, the first signaling is high layer signaling.

As an embodiment, the first signaling is physical layer signaling.

As an embodiment, the first signaling is physical layer signaling, and the first signaling includes scheduling information of the first wireless signal, where the scheduling information includes {occupied time-frequency resources, MCS, RV At least one of , NDI, HARQ process number}.

As an embodiment, the first signaling explicitly indicates the second parameter, the second parameter is a non-negative integer, and the second parameter is used to determine the first sequence.

As an embodiment, the first signaling includes a default configuration of the first sequence.

In one embodiment, the first signaling implicitly indicates the second parameter, the second parameter is an integer, and the second parameter is used to determine the first sequence.

Through the introduction of the first signaling, the scrambling code sequence of the transmission in the time interval TTI less than 1 millisecond can be configured more flexibly.

Specifically, according to an aspect of the invention, the above method is characterized in that {at least one of the first time interval in the time domain position in the first time unit, the second parameter} is used A first value is determined, the first value being an initial value of a generator of the first sequence.

As an embodiment, the first sequence is a pseudo-random sequence.

As an embodiment, the first value is an integer.

Specifically, according to an aspect of the invention, the method is further characterized in that: {the first time interval is in a time domain position in the first time unit, at least one of the second parameters} is used Determine the first variable. The first value is linearly related to the first variable, a linear correlation coefficient between the first value and the first variable is a power of V of 2, and the V is {0, 9, 13, 14, 15 One of 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30}.

As an embodiment, the value range of the first variable is a first integer set, and the V is 9, and at least one element in the first integer set is an integer greater than 9 and less than 16. As a sub-embodiment, the first set of integers consists of 16 integers from 0 to 15.

In one embodiment, the value range of the first variable is a second integer set, the V Is one of {13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30}, at least in the second set of integers An element is included, which is a positive integer of power (30-V) less than or equal to two. As an embodiment, the first signaling is physical layer signaling, and for the first time unit, the second parameter is only applied to the first time interval. The first variable is the second parameter, and the V is 14.

Specifically, according to an aspect of the invention, the above method is characterized in that {at least one of the first time interval in the time domain position in the first time unit, the second parameter} is used Determine the first variable. The first value is linearly related to the first variable, a linear correlation coefficient between the first value and the first variable is 1, and a range of values of the second variable is a third integer set, the At least one element in the set of three integers is an integer greater than 503 and less than 512.

As an embodiment, the third set of integers consists of 8 integers from 504 to 511.

As an embodiment, the first value is determined by the formula c _init = a · 2 ¹⁴ + b · 2 ¹³ + c · 2 ⁹ + v ₂ , wherein c _init represents the first value, a, b, c Representing a related variable other than the first variable, v ₂ represents the first variable, and v ₂ is an integer greater than 503 and less than 512.

Specifically, according to an aspect of the present invention, the foregoing method is characterized by: the first value and the first identifier of the UE, a codeword index corresponding to the first wireless signal, and a serving cell of the UE At least one of a cell identifier, a second identifier of the UE, is linearly related, the first value and the first identifier of the UE, a codeword index corresponding to the first wireless signal, and a service of the UE The linear correlation coefficient of the cell identifier of the cell, the second identifier of the UE is {16384, 8192, 1, 1}, respectively.

As an embodiment, the first identifier of the UE is an RNTI (Radio Network Temporary Identity).

As an embodiment, the codeword index corresponding to the first wireless signal is 0 or 1.

As an embodiment, the cell identifier is a PCI (Physical Cell ID).

As an embodiment, the second identifier of the UE is an MBSFN (Multimedia Broadcast Single Frequency Network) area ID.

As an embodiment, the first value is determined by a formula

Determining, wherein c _init represents the first value, n _RNTI , q,

Respectively represent the first identification of the UE, the first wireless signal corresponding to the codeword index and the cell identification, v ₁ representative of said first variable, v ₁ is an integer greater than 9 and less than 16.

The invention discloses a method used in a base station with low delay, which comprises the following steps:

- Step A. Determine the first sequence

- Step B. Execute the first wireless signal.

The first wireless signal occupies a first time interval in the time domain, the duration of the first time interval is less than 1 millisecond, and the first sequence and at least one of the {first parameter, the second parameter} One is related. The first parameter and {the first time interval are in a time domain position in the first time unit, and the first time unit is related to at least a former in a time domain position in the first time window}, The second parameter is configurable. The duration of the first time unit is less than or equal to 1 millisecond, and the duration of the first time window is greater than 1 millisecond. The performing is transmitting, the first sequence is used for a scrambling code of a first bit block, the first bit block is used to generate the first wireless signal; or the performing is receiving, the first The sequence is used for descrambling of the first block of bits.

In one embodiment, the operation is to receive, and the transport channel corresponding to the first wireless signal is an uplink shared channel (UL-SCH) that is mapped to the first time interval. As a sub-embodiment, if the uplink shared channel in the first time interval carries placeholder bits of an ACK/NACK indication or a Rank Indication, the first wireless signal corresponds to the location The placeholder bit is a fixed signal "1". As another sub-embodiment, if the uplink shared channel of the first time interval of the mapping carries an ACK/NACK indication or a Rank Indication Repetition, the first wireless signal corresponds to the Any one of the placeholder bits is the same as the first wireless signal of the previous bit of the bit.

In one embodiment, the operation is to send, the transmission signal corresponding to the first wireless signal The track is a downlink shared channel (DL-SCH, Downlink Shared CHannel) mapped at the first time interval.

As an embodiment, the operation is to send, and the first wireless signal is correspondingly mapped to a downlink physical control channel (PDCCH, Physical Downlink Control CHannel) in the first time interval.

In one embodiment, the operation is to send, and the transport channel corresponding to the first wireless signal is a multicast channel (MCH, Multicast CHannel) mapped in the first time interval.

In one embodiment, the operation is to send, and the first wireless signal is correspondingly mapped to a Physical Control Format Indicator Channel (PCFICH) of the first time interval.

As an embodiment, the first time unit is a TS (Time Slot).

As an embodiment, for the first time unit, the second parameter is only applied to the The first time interval is described. As a sub-embodiment, the second parameter is applied to at least one time interval outside of the first time unit. As a sub-embodiment, the second parameter can only be applied to the first time interval.

In one embodiment, the time domain location in the first time unit of the first time interval includes {the time domain start location of the first time interval in the first time unit, the first time Interval at least one of a time domain termination position in the first time unit, a length of the duration of the first time interval.

As an embodiment, the first time unit is one subframe.

As an embodiment, the first time unit is a radio frame.

Step A0. Sending first signaling, the first signaling being used to determine the second parameter.

As an embodiment, the step A0 further includes the following steps:

As an embodiment, the first signaling is high layer signaling.

As an embodiment, the first signaling is physical layer signaling.

Step A1. Receive second signaling over the backhaul link.

The second signaling is used by the base station to determine the second parameter.

As an embodiment, the backhaul link is used to connect two network devices.

As an embodiment, the backhaul link includes an X2 interface.

As an embodiment, the backhaul link includes an SI interface.

As an embodiment, the backhaul link includes a fiber optic direct connection between two network devices.

As an embodiment, the base station determines the second parameter according to an input parameter including the second signaling.

As an embodiment, the second signaling is used to determine a third parameter, the third parameter being used by a sender of the second signaling to generate a scrambling code sequence for the first time interval, or The third parameter is used by a sender of the second signaling to generate a descrambling sequence for the first time interval, the second parameter and the third parameter being different.

As an embodiment, the second parameter and the third parameter may be coordinated between two different network devices by using the second signaling to achieve interference coordination.

Step A2. Send the third signaling over the backhaul link.

The third signaling is used by a receiver of the third signaling to determine the second parameter.

As an embodiment, the first sequence is a pseudo-random sequence.

As an embodiment, the first value is an integer.

As an embodiment, the starting point of the first time interval is after the starting point of the first time unit.

Specifically, according to an aspect of the invention, the above method is characterized in that {at least one of the first time interval in the time domain position in the first time unit, the second parameter} is used Determine the first variable. The first value is linearly related to the first variable, a linear correlation coefficient between the first value and the first variable is a power of V of 2, and the V is {0, 9, 13, 14, 15 ,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30} one of the.

As an embodiment, the value range of the first variable is a second integer set, and the V is {13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 And one of 26, 27, 28, 29, 30}, wherein the second set of integers includes at least one element, and the element is a positive integer of (30-V) power less than or equal to 2. In one embodiment, the first signaling is physical layer signaling, and for the first time unit, the second parameter is only applied to the first time interval. The first variable is the second parameter, and the V is 14.

Specifically, according to an aspect of the invention, the method is characterized in that: {the first time interval is in a time domain position in the first time unit, at least one of the second parameters} is Used to determine the first variable. The first value is linearly related to the first variable, a linear correlation coefficient between the first value and the first variable is 1, and a range of values of the first variable is a third integer set, the At least one element in the set of three integers is an integer greater than 503 and less than 512.

As an embodiment, the first identifier of the UE is an RNTI.

As an embodiment, the cell identity is a PCI.

As an embodiment, the second identifier of the UE is an MBSFN area ID.

As an embodiment, the first value is determined by a formula

Determining, wherein c _init represents the first value, n _RNTI , q,

Respectively represent the first identification of the UE, the first wireless signal corresponding to the codeword index and the cell identification, v ₁ representing the first variable, v ₁ is an integer greater than 9 and less than 16.

The invention discloses a user equipment used for low delay, which comprises the following modules:

- first processing module: for determining the first sequence

a second processing module for operating the first wireless signal.

As an embodiment, the first time unit is a TS (Time Slot).

As an embodiment, the first time unit is one subframe.

As an embodiment, the first time unit is a radio frame.

Specifically, according to an aspect of the present invention, the user equipment is characterized in that the first processing module is further configured to receive the first signaling. The first signaling is used to determine the second parameter.

As an embodiment, the first signaling is high layer signaling.

As an embodiment, the first signaling is physical layer signaling.

Specifically, according to an aspect of the present invention, the user equipment is characterized in that: the first processing module uses {the first time interval in a time domain position in the first time unit, the second parameter} At least one of the first values determines a first value, the first value being an initial value of a generator of the first sequence.

In an embodiment, the user equipment is further characterized in that the first processing module uses an initial value of the generator of the first sequence to initially start at a starting point of the first time interval. The first sequence generator is implemented.

Specifically, according to an aspect of the present invention, the user equipment is further characterized in that: the first processing module uses a time domain position of the first time interval in the first time unit, the second parameter At least one of the } determines the first variable. The first value is linearly related to the first variable, a linear correlation coefficient between the first value and the first variable is a power of V of 2, and the V is {0, 9, 13, 14, 15 One of 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30}.

As an embodiment, the value range of the first variable is a second integer set, and the V is {13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25 And one of 26, 27, 28, 29, 30}, wherein the second set of integers includes at least one element, and the element is a positive integer of (30-V) power less than or equal to 2. As an embodiment, the first signaling is physical layer signaling, and for the first time unit, the second parameter is only applied to the first time interval. The first variable is the second parameter, and the V is 14.

The invention discloses a base station device used for low delay, which comprises the following modules:

- a third processing module: for determining the first sequence

a fourth processing module: for executing the first wireless signal.

The first wireless signal occupies a first time interval in the time domain, the duration of the first time interval is less than 1 millisecond, and the first sequence and at least one of the {first parameter, the second parameter} One is related. Wherein the first parameter and the first time interval are in a time domain position in the first time unit, and the first time unit is related to at least a former in a time domain position in the first time window. The second parameter is configurable. The duration of the first time unit is less than or equal to 1 millisecond, and the duration of the first time window is greater than 1 millisecond. The performing is transmitting, the first sequence is used for a scrambling code of a first bit block, the first bit block is used to generate the first wireless signal; or the performing is receiving, the first The sequence is used for descrambling of the first block of bits.

Specifically, according to an aspect of the present invention, the foregoing base station device is characterized in that the third processing module is further configured to send the first signaling. The first signaling is used to determine the second parameter.

As an embodiment, the first signaling is high layer signaling.

As an embodiment, the first signaling is physical layer signaling.

Specifically, according to an aspect of the present invention, the base station device is characterized in that the third processing module is further used for at least one of the following:

- receiving the second signaling over the backhaul link. The second signaling is used by the base station to determine the second parameter.

- transmitting the third signaling over the backhaul link. The third signaling is used by a receiver of the third signaling to determine the second parameter.

Specifically, according to an aspect of the present invention, the base station device is characterized in that the third processing module uses {the first time interval in a time domain position in the first time unit, the second parameter} At least one of the first values determines a first value, the first value being an initial value of a generator of the first sequence.

In one embodiment, the base station device is further characterized in that the third processing module initializes the first sequence generator at a starting point of the first time interval using an initial value of a generator of the first sequence.

Specifically, according to an aspect of the present invention, the foregoing base station device is further characterized in that: the third processing module uses {the first time interval in a time domain position in the first time unit, the second parameter At least one of the } determines the first variable. The first value is linearly related to the first variable, a linear correlation coefficient between the first value and the first variable is a power of V of 2, and the V is {0, 9, 13, 14, 15 One of 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30}.

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

- Support interference randomization between transmission time intervals (TTI) of less than 1 ms to improve signal transmission robustness;

- Flexible configuration of scrambling sequences to minimize collisions with scrambling sequences.

DRAWINGS

Other features, objects, and advantages of the present invention will become more apparent from the Detailed Description of Description

FIG. 1 shows a flow chart of a downlink transmission according to an embodiment of the present invention;

2 shows an upstream transmission flow diagram in accordance with one embodiment of the present invention;

3 is a schematic diagram showing a relationship between a first sequence and a first time interval according to an embodiment of the present invention;

4 is a schematic diagram showing a relationship between a first sequence and a first time interval according to an embodiment of the present invention;

FIG. 5 is a schematic diagram showing a relationship between a first time interval and a first time window according to an embodiment of the present invention; FIG.

Figure 6 shows a schematic diagram of a first sequence generation in accordance with one embodiment of the present invention;

FIG. 7 is a block diagram showing the structure of a processing device in a User Equipment (UE) according to an embodiment of the present invention; FIG.

Figure 8 is a block diagram showing the structure of a processing device in a base station according to an embodiment of the present invention;

detailed description

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

Example 1

Embodiment 1 illustrates a downlink transmission flow chart as shown in FIG. In Figure 1, base station N1 is the maintenance base station of the serving cell of UE U2, and the steps identified in blocks F1, F2 and F3 are optional, respectively.

For the base station N1 , the second signaling is received in step S101, the first signaling is transmitted in step S102, the third signaling is transmitted in step S103, and the initial value of the generator using the first sequence is first in step S104. The starting point of the time interval initializes the first sequence generator; the first sequence is determined in step S105, and the first wireless signal is transmitted in step S106.

For UE U2 , receiving the first signaling in step S201, initializing the first sequence generator at the starting point of the first time interval using the initial value of the generator of the first sequence in step S202; determining the first sequence in step S203 The first wireless signal is received in step S204.

In Embodiment 1, the first wireless signal occupies a first time interval in a time domain, the duration of the first time interval is less than 1 millisecond, the first sequence and {first parameter, second parameter} At least one of them is related. The first parameter and {the first time interval are in a time domain position in the first time unit, the first time unit being related to at least the former in a time domain position in the first time window}. The second signaling is used by the base station to determine the second parameter, the first signaling is used by the user equipment (UE) to determine the second parameter, and the third signaling is used by the receiver to determine the second parameter. At least one of the first sequence and {the first parameter, the second parameter} is related. The base station initializes the generator of the first sequence according to at least one of {the first parameter, the second parameter} at the first time interval starting point. The first sequence is used for scrambling of a first block of bits, the first block of bits being used to generate the first wireless signal. The first sequence is a pseudo-random sequence.

As a sub-embodiment 1 of Embodiment 1, the time domain position in the first time unit of the first time interval includes {the time domain start of the first time interval in the first time unit a location, the first time interval being at least one of a time domain termination location in the first time unit, a length of the duration of the first time interval.

As a sub-embodiment 2 of the first embodiment, the first signaling is transmitted through DCI (Downlink Control Information).

As a sub-embodiment 3 of Embodiment 1, the second signaling is acquired through the X2 interface.

As sub-embodiment 4 of embodiment 1, {the first time interval is in a time domain position in the first time unit, at least one of the second parameters} is used to determine the first variable . The initial value of the generator of the first sequence is linearly related to the first variable, and the linear correlation coefficient between the initial value of the generator of the first sequence and the first variable is a power of V of 2, The V is one of {0, 9, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30}.

As a sub-embodiment 5 of the first embodiment, the transport channel corresponding to the first radio signal is a downlink shared channel (DL-SCH, Downlink Shared Channel) mapped to the first time interval.

As a sub-embodiment 6 of the first embodiment, the transport channel corresponding to the first radio signal is a multicast channel (MCH, Multicast CHannel) mapped in the first time interval.

As a sub-embodiment 7 of the first embodiment, the first radio signal is mapped to the downlink physical control channel (PDCCH, Physical Downlink Control CHannel) of the first time interval.

As a sub-embodiment 8 of the first embodiment, the first radio signal is mapped to the Physical Control Format Indicator Channel (PCFICH) of the first time interval.

Example 2

Embodiment 2 illustrates an upstream transmission flow chart as shown in FIG. In Figure 2, base station N3 is the maintenance base station of the serving cell of UE U4, and the steps identified in blocks F5, F6 and F7 are optional, respectively.

For the base station N3 , the second signaling is received in step S301, the first signaling is transmitted in step S302, the third signaling is transmitted in step S303, the first sequence is determined in step S305, and the first sequence is received in step S306. wireless signal.

For UE U4 , the first signaling is received in step S401; the first sequence is determined in step S403, and the first wireless signal is transmitted in step S404.

In Embodiment 2, the first wireless signal occupies a first time interval in a time domain, and the duration of the first time interval is less than 1 millisecond, the first sequence and the {first parameter, the second parameter} At least one of them is relevant. The first parameter and {the first time interval are at a first time A time domain location in the cell, the first time unit being associated with at least the former of the time domain locations in the first time window. The second signaling is used by the base station to determine the second parameter, the first signaling is used by the user equipment (UE) to determine the second parameter, and the third signaling is used by the receiver to determine the second parameter. At least one of the first sequence and {the first parameter, the second parameter} is related. The user equipment initializes the generator of the first sequence according to at least one of {the first parameter, the second parameter} at the first time interval starting point. The first sequence is used for scrambling of a first block of bits, the first block of bits being used to generate the first wireless signal. The first sequence is a pseudo-random sequence.

As a sub-embodiment 1 of Embodiment 2, the time domain position in the first time unit of the first time interval includes {the time domain start of the first time interval in the first time unit a location, the first time interval being at least one of a time domain termination location in the first time unit, a length of the duration of the first time interval.

As a sub-embodiment 2 of the second embodiment, the first signaling is transmitted through DCI (Downlink Control Information).

As a sub-embodiment 3 of Embodiment 2, the second signaling is acquired through the X2 interface.

As sub-invention 4 of embodiment 2, {the first time interval is in a time domain position in the first time unit, at least one of the second parameters} is used to determine the first variable . The initial value of the generator of the first sequence is linearly related to the first variable, and the linear correlation coefficient between the initial value of the generator of the first sequence and the first variable is a power of V of 2, The V is one of {0, 9, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30}.

As a sub-embodiment 5 of the second embodiment, the transport channel corresponding to the first radio signal is an uplink shared channel (UL-SCH, uplink shared CHannel) mapped in the first time interval.

Example 3

Embodiment 3 illustrates a schematic diagram of the relationship between the first sequence and the first time interval, as shown in FIG. In Fig. 3, the horizontal axis represents the time vertical axis represents the frequency, the oblique frequency identified time-frequency region identifies the wireless signal mapped at time interval 1, and the unfilled time-frequency region identifies the wireless signal mapped at time interval 2. The radio signal at the time interval 1 is scrambled with sequence 1 for the mapping, and the radio signal at the time interval 2 is scrambled using sequence 2 for the mapping.

As sub-embodiment 1 of embodiment 3, the sequence 1 is shown according to the time interval 1 The position within the time unit is determined, the sequence 2 being determined according to the position of the time interval 2 within the indicated time unit, respectively.

As a sub-embodiment 2 of Embodiment 3, the sequence 1 and the sequence 2 are respectively determined according to a second parameter of the corresponding network configuration.

Example 4

Embodiment 4 illustrates a schematic diagram of the relationship between the first sequence and the first time interval, as shown in FIG. In FIG. 4, the horizontal axis represents the time vertical axis represents the frequency, the oblique frequency identified time-frequency region identifies the wireless signal mapped at time interval 1, and the vertical-line identified time-frequency region identifies the wireless signal mapped at time interval 2, By analogy, the unfilled time-frequency region identifies the wireless signal mapped at time interval 7. For the wireless signal of the mapping at the time interval 1, the sequence 1 is used for scrambling, for the wireless signal of the time interval 2, the sequence 2 is scrambled, and so on, for the mapping The radio signal of time interval 6 is scrambled using sequence 6, for which the radio signal at said time interval 7 is scrambled with a sequence W, where W is one of said sequence 1 to said sequence 6.

As a sub-embodiment 1 of embodiment 4, the sequence 1 to the sequence 6 are determined according to the position of the time interval 1 to the time interval 6 in the illustrated time unit, respectively. The sequence W is predefined as one of the sequence 1 to the sequence 6.

As a sub-embodiment 2 of embodiment 4, the sequence 1 to the sequence 6 and the sequence W are respectively determined according to a second parameter of the corresponding network configuration.

As a sub-embodiment 3 of embodiment 4, the sequence 1 to the sequence 6 are respectively determined according to the position of the time interval 1 to the time interval 6 within the time unit shown. The sequence W is determined according to a second parameter of the network configuration.

Example 5

Embodiment 5 illustrates a schematic diagram of the relationship between the first time unit and the first time window, as shown in FIG. In Figure 5, the time zone identified by the cross line represents the first time unit and the time zone of no fill represents the first time window. The first time window includes a positive integer number of time units, and the first time unit is one of the positive integer number of time units.

In the sub-embodiment 1 of Embodiment 5, the first time unit is one subframe, and the first time window is a radio frame.

In Sub-Embodiment 2 of Embodiment 5, the first time unit is a TS (Time Slot).

Example 6

Embodiment 6 exemplifies a first sequence generation diagram as shown in FIG. In Figure 6, the first sequence is generated by XORing the sequence X ₁ (i) and the sequence X ₂ (i), and the small box labeled with a number represents a register that generates the sequence X ₁ (i) and the sequence X ₂ (i) , where the number is the index of the register. The sequence X ₁ (i) and the sequence X ₂ (i) are respectively determined by the initial values of the corresponding 31-bit registers. The initial value of the register of sequence X ₁ (i) is a fixed value. In the register {0,9,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30} of the sequence X ₂ (i) The initial value is related to the first variable.

In Sub-Embodiment 1 of Embodiment 6, the first variable is used to initialize Register 9 to Register 12 of the generated sequence X ₂ (i), wherein the first variable ranges from an integer greater than 9 and less than 16.

In Sub-Embodiment 2 of Embodiment 6, the first variable is used to initialize Register 0 to Register 8 of the generated sequence X ₂ (i), wherein the first variable ranges from an integer greater than 503 and less than 512.

In Sub-Embodiment 3 of Embodiment 6, the first variable is used to initialize the register 30 that generates the sequence X ₂ (i).

Example 7

Embodiment 7 exemplifies a structural block diagram of a processing device in a user equipment, as shown in FIG. In FIG. 7, the user equipment processing apparatus 300 is mainly composed of a first processing module 301 and a second processing module 302. The first processing module 301 is configured to determine the first sequence. The second processing module 302 is configured to operate the first wireless signal. The first processing module 301 is further configured to receive first signaling, where the first signaling is used to determine a second parameter.

In Embodiment 7, the first processing module 301 determines the first sequence by at least one of {first parameter, second parameter}. The first parameter is related to at least the former of the {first time interval in the time domain position in the first time unit, the first time unit in the time domain position in the first time window}. The second parameter is determined by the first signaling received by the first processing module 301. The duration of the first time unit is less than or equal to 1 millisecond, the duration of the first time window is greater than 1 millisecond, and the first time interval is less than or equal to the first time unit. The operation in the second processing module 302 is a transmission, the first sequence is used for a scrambling code of a first bit block, the first bit block is used to generate the first wireless signal; or the second processing module The operation described in 302 is reception, and the first sequence is used for descrambling of the first block of bits.

In sub-embodiment 1 of embodiment 7, {the first time interval is in a time domain position in the first time unit, at least one of the second parameters} is used to determine the first A value, the first value being an initial value of a generator of the first sequence.

In Sub-Embodiment 2 of Embodiment 7, the initial value of the generator of the first sequence initializes the first sequence generator at a starting point of the first time interval.

In the third embodiment of the embodiment 7, the first signaling is physical layer signaling, and the first signaling includes scheduling information of the first wireless signal, where the scheduling information includes: At least one of frequency resources, MCS, RV, NDI, HARQ process number}.

Example 8

Embodiment 8 exemplifies a structural block diagram of a processing device in a base station device, as shown in FIG. In FIG. 8, the base station processing apparatus 100 is mainly composed of a third processing module 101 and a fourth processing module 102. The third processing module 101 is configured to determine the first sequence. The fourth processing module 102 is configured to operate the first wireless signal. The third processing module 101 is further configured to send the first signaling, where the first signaling is used to determine the second parameter. The third processing module 101 is further configured to receive second signaling by using a backhaul link, where the second signaling is used by the base station to determine the second parameter. The third processing module 101 is further configured to send third signaling by using a backhaul link, where the third signaling is used by a receiver of the third signaling to determine the second parameter.

In Embodiment 8, the third processing module 101 determines the first sequence by at least one of {first parameter, second parameter}. The first parameter is related to at least the former of the {first time interval in the time domain position in the first time unit, the first time unit in the time domain position in the first time window}. The second parameter is determined by the second signaling received by the third processing module 101. The duration of the first time unit is less than or equal to 1 millisecond, the duration of the first time window is greater than 1 millisecond, and the first time interval is less than or equal to the first time unit. The operation in the fourth processing module 102 is a transmission, the first sequence is used for a scrambling code of a first bit block, the first bit block is used to generate the first wireless signal; or a fourth processing module The operation described in 102 is reception, and the first sequence is used for descrambling of the first block of bits.

In sub-embodiment 1 of embodiment 8, {the first time interval is in a time domain position in the first time unit, at least one of the second parameters} is used to determine the first A value, the first value being an initial value of a generator of the first sequence.

In Sub-Embodiment 2 of Embodiment 8, the initial value of the generator of the first sequence The first sequence generator is initialized at a starting point of the first time interval.

In the third embodiment of the embodiment 8, the first signaling is physical layer signaling, the first signaling includes scheduling information of the first wireless signal, and the scheduling information includes: At least one of frequency resources, MCS, RV, NDI, HARQ process number}.

In sub-embodiment 4 of embodiment 8, the backhaul link includes an X2 interface.

One of ordinary skill in the art can appreciate that all or part of the above steps can be completed by a program to instruct related hardware, and the program can 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 also be implemented using one or more integrated circuits. Correspondingly, each module unit in the above embodiment may be implemented in hardware form or in the form of a software function module. The application is not limited to any specific combination of software and hardware. The UE or the terminal in the present invention includes, but is not limited to, a wireless communication device such as a mobile phone, a tablet computer, a notebook, an internet card, a low power consumption device, and an in-vehicle communication device. The base station or network side device in the present invention includes, but is not limited to, a macro communication base station, a micro cell base station, a home base station, a relay base station, and the like.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All modifications, equivalents, improvements, etc., made within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

A method for use in a UE with low latency, comprising the steps of:

- Step A. Determine the first sequence

- step B. operating the first wireless signal;

The first wireless signal occupies a first time interval in the time domain, the duration of the first time interval is less than 1 millisecond, and the first sequence and at least one of the {first parameter, the second parameter} One is related; the first parameter and {the first time interval are in a time domain position in the first time unit, the first time unit is in a time domain position in the first time window} At least the former is related, the second parameter is configurable; the duration of the first time unit is less than or equal to 1 millisecond, and the duration of the first time window is greater than 1 millisecond; the operation is sending, a first sequence is used for scrambling of a first block of bits, the first block of bits being used to generate the first wireless signal; or the operation is receiving, the first sequence being used for a first block of bits De-scrambling.
The method according to claim 1, wherein said step A further comprises the steps of:

Step A0. Receive first signaling, the first signaling being used to determine the second parameter;
The method according to claim 1 or 2, wherein at least one of {the first time interval in the time domain position in the first time unit, the second parameter} is used to determine A first value, the first value being an initial value of a generator of the first sequence.
The method according to claim 3, wherein at least one of {the first time interval in the time domain position in the first time unit, the second parameter} is used to determine the first a variable; the first value is linearly related to the first variable, a linear correlation coefficient between the first value and the first variable is a power of V of 2, and the V is {0, 9, 13, 14 One of 15,15,17,18,19,20,21,22,23,24,25,26,27,28,29,30}.
Method according to claim 3 or 4, characterized in that {at least one of the first time interval in the time domain position in the first time unit, the second parameter} is used for determining The second variable. The first value is linearly related to the second variable, a linear correlation coefficient between the first value and the second variable is 1, and a range of values of the second variable is a third integer set, At least one element in the set of three integers is an integer greater than 503 and less than 512.
The method according to any one of claims 3, 4, 5, wherein the first value and the first identifier of the UE, a codeword index corresponding to the first wireless signal, At least one of the cell identifier of the serving cell of the UE, the second identifier of the UE is linearly related, the first value and the first identifier of the UE, a codeword index corresponding to the first wireless signal The linear correlation coefficient of the cell identifier of the serving cell of the UE, the second identifier of the UE is {16384, 8192, 1, respectively. 1}.
A method for use in a base station with low latency, comprising the steps of:

- Step A. Determine the first sequence

- step B. performing a first wireless signal;

The first wireless signal occupies a first time interval in the time domain, the duration of the first time interval is less than 1 millisecond, and the first sequence and at least one of the {first parameter, the second parameter} One is related; the first parameter and {the first time interval are in a time domain position in the first time unit, the first time unit is in a time domain position in the first time window} At least the former, the second parameter is configurable; the duration of the first time unit is less than or equal to 1 millisecond, the duration of the first time window is greater than 1 millisecond; the execution is a transmission, a first sequence is used for scrambling of a first block of bits, the first block of bits being used to generate the first wireless signal; or the performing is receiving, the first sequence being used for a first block of bits De-scrambling.
The method according to claim 7, wherein said step A further comprises the steps of:

Step A0. Sending first signaling, the first signaling being used to determine the second parameter.
The method according to claim 7 or 8, wherein the step A further comprises the following steps:

Step A1. Receive second signaling over the backhaul link.

The second signaling is used by the base station to determine the second parameter.
The method according to claim 8 or 9, wherein the step A further comprises the following steps:

Step A2. Send the third signaling over the backhaul link.

The third signaling is used by a receiver of the third signaling to determine the second parameter.
The method according to claim 8 or 9, wherein at least one of {the first time interval in the time domain position in the first time unit, the second parameter} is used to determine A first value, the first value being an initial value of a generator of the first sequence.
The method according to claim 11, wherein at least one of {the first time interval in the time domain position in the first time unit, the second parameter} is used to determine the first variable. The first value is linearly related to the first variable, a linear correlation coefficient between the first value and the first variable is a power of V of 2, and the V is {0, 9, 13, 14, 15 One of 16,17,18,19,20,21,22,23,24,25,26,27,28,29,30}.
Method according to claim 11 or 12, characterized in that said first time interval At least one of the second parameters} is used to determine a second variable in a time domain position in the first time unit; the first value is linearly related to the second variable, the first The linear correlation coefficient between the value and the second variable is 1, and the range of values of the second variable is a third integer set, and at least one element of the third integer set is an integer greater than 503 and less than 512.
The method according to any one of claims 11, 12, wherein the first value and the first identifier of the UE, the codeword index corresponding to the first wireless signal, At least one of the cell identifier of the serving cell of the UE, the second identifier of the UE is linearly related, the first value and the first identifier of the UE, a codeword index corresponding to the first wireless signal The linear correlation coefficient of the cell identifier of the serving cell of the UE, the second identifier of the UE is {16384, 8192, 1, 1}, respectively.
A user equipment that is used for low latency, including the following modules:

- first processing module: for determining the first sequence

a second processing module: for operating the first wireless signal;

The first wireless signal occupies a first time interval in the time domain, the duration of the first time interval is less than 1 millisecond, and the first sequence and at least one of the {first parameter, the second parameter} One is related; the first parameter and {the first time interval are in a time domain position in the first time unit, the first time unit is in a time domain position in the first time window} At least the former is related, the second parameter is configurable; the duration of the first time unit is less than or equal to 1 millisecond, and the duration of the first time window is greater than 1 millisecond; the operation is sending, a first sequence is used for scrambling of a first block of bits, the first block of bits being used to generate the first wireless signal; or the operation is receiving, the first sequence being used for a first block of bits De-scrambling.
The user equipment according to claim 15, wherein the first processing module is further configured to receive first signaling; the first signaling is used to determine the second parameter.
A base station device used for low latency, which includes the following modules:

- a third processing module: for determining the first sequence

a fourth processing module: for executing the first wireless signal.

The first wireless signal occupies a first time interval in the time domain, the duration of the first time interval is less than 1 millisecond, and the first sequence and at least one of the {first parameter, the second parameter} One is related; wherein the first parameter and {the first time interval are in a time domain position in the first time unit, and a time domain position in the first time window in the first time window} At least the former, the second parameter is configurable; the duration of the first time unit is less than or equal to The duration of the first time window is greater than 1 millisecond at 1 millisecond; the execution is transmission, the first sequence is used for a scrambling code of a first bit block, and the first bit block is used to generate Said first wireless signal; or said performing is reception, said first sequence being used for descrambling of the first block of bits.
The base station device according to claim 17, wherein the third processing module is further configured to send the first signaling; wherein the first signaling is used to determine the second parameter.
The base station device according to claim 17 or 18, wherein the third processing module is further used for at least one of the following:

Receiving second signaling over a backhaul link; wherein the second signaling is used by the base station to determine the second parameter.

Transmitting third signaling by a backhaul link; wherein the third signaling is used by a recipient of the third signaling to determine the second parameter.