WO2018010586A1

WO2018010586A1 - Method and apparatus in wireless communications

Info

Publication number: WO2018010586A1
Application number: PCT/CN2017/091920
Authority: WO
Inventors: 张晓博
Original assignee: 上海朗帛通信技术有限公司
Priority date: 2016-07-13
Filing date: 2017-07-06
Publication date: 2018-01-18
Also published as: CN107623564A; CN107623564B; CN109743145A; CN109743145B

Abstract

Disclosed in the present invention are a method and apparatus in wireless communications. A UE determines a first sequence, and receives a first reference signal. The first reference signal occupies a first time interval on a time domain, the duration of the first time interval is shorter than 1 millisecond, and the first sequence signal is associated with at least one of a first parameter and a second parameter, the first parameter is at least associated with the former between the time domain position of the first time interval in a first time unit and the time domain position of the first time unit in a first time window, the second parameter is configurable, and the first sequence is used for generating the first reference signal. In the present invention, an association with at least one of the first parameter and the second parameter is established for the first sequence, so that it is ensured that initial values of the first reference signal on different time intervals are different, thereby increasing the randomness of the first reference signal, reducing interference among cells, and improving the whole performance of a system.

Description

Method and device in wireless communication

Technical field

The present invention relates to a transmission scheme of a wireless signal in a wireless communication system, and more particularly to a method and apparatus in a base station and a UE supporting low-latency communication.

Background technique

In the existing LTE (Long-term Evolution) and LTE-A (Long Term Evolution Advanced) systems, TTI (Transmission Time Interval) or Subframe or PRB ( The Physical Resource Block (Ph) corresponds to one ms (milli-second) in time. An LTE subframe includes two time slots (Time Slots), which are a first time slot and a second time slot, respectively, and the first time slot and the second time slot respectively occupy the first half of a LTE subframe. And the last half a millisecond.

In the conventional LTE system, the initial value of the generated sequence corresponding to the DMRS (Downlink Modulation Reference Signal) changes with the position of the subframe in which the DMRS is located in a radio frame to increase the randomness of the DMRS sequence. Small interval interference.

3GPP (3rd Generation Partner Project), Reduced Latency in Release 14, and a new generation of Radio Access Technologies (NR), an important application scenario is URLLC ( Ultra-Reliable and Low Latency Communications, ultra-reliable and low-latency communication). For the scenario of URLLC, the traditional LTE frame structure needs to be redesigned. The new sTTI (Short TTI) will be introduced by future systems.

Summary of the invention

An intuitive design method for supporting sTTI is to keep the DMRS generation sequence consistent with the traditional system, that is, the initial value of the DMRS generation sequence varies with the time domain position of the subframe in which the DMRS is located in a radio frame. However, this method brings a problem that if the DMRS configured by the UEs of two neighboring cells interferes on a given sTTI in a certain subframe, the interference will be the given sTTI in this subframe. Subsequent to all sTTIs, there is a performance penalty.

In response to the above problems, the present invention provides a solution. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments of the present application may be combined with each other arbitrarily. For example, features in embodiments and embodiments in the UE of the present application may be applied to a base station, and vice versa.

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

- step A. determining the first sequence;

- Step B. Receive the first reference signal.

The first reference 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 is related to at least the former of the first time interval in the first time unit, the first time unit in the time domain position in the first time window, the second parameter It 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 first sequence is used to generate the first reference signal.

In the traditional LTE and LTE-A systems, the initial value of the DMRS generation sequence is related to the position of the subframe in which the DMRS is located in the entire radio frame, thereby improving the randomness of the DMRS sequence to combat inter-cell interference.

The above method designed by the present invention ensures that the initial value of the first sequence is changed based on each time interval by associating the first sequence with at least one of the {first parameter, the second parameter}, or The initial values of the first sequence are configurable, thereby ensuring randomization of the first reference signal in a low delay system to combat inter-cell interference.

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

As an embodiment, the first sequence is an RS sequence of the first reference signal.

As an embodiment, the first reference signal corresponds to a DMRS.

As an embodiment, the first time interval includes R multicarrier symbols, and the R is a positive integer.

As a sub-embodiment of this embodiment, the multi-carrier symbol is an OFDM (Orthogonal Frequency Division Multiplexing) symbol.

As a sub-embodiment of the embodiment, the multi-carrier symbol is SC-FDMA (Single-Carrier Frequency Division Multiple Access, single) Carrier frequency division multiplexing access) symbols.

As a sub-embodiment of this embodiment, the multi-carrier symbol is an FBMC (Filter Bank Multi Carrier) symbol.

As a sub-embodiment of this embodiment, the multi-carrier symbol is an OFDM symbol including a CP (Cyclic Prefix).

As a sub-embodiment of the embodiment, the multi-carrier symbol is a DFT-s-OFDM (Discrete Fourier Transform Spreading Orthogonal Frequency Division Multiplexing) symbol including a CP. .

As a sub-embodiment of this embodiment, the R is one of {1, 2, 4, 7}.

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

As an embodiment, the first time unit is a time slot of LTE.

As an embodiment, the first time window is an LTE radio frame.

As an embodiment, the first time window occupies a continuous positive integer number of milliseconds in the time domain.

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 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 a sub-embodiment of this embodiment, the duration of at least two of the T time intervals is different.

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

As an embodiment, the second parameter can only be applied to the first time interval.

In one embodiment, the time domain location of the first time interval in the first time unit includes {the time domain start location of the first time interval in the first time unit, The first time interval is at least one of a time domain start position and a time domain end position in the first time unit, a length of the duration of the first time interval.

Specifically, according to an aspect of the invention, the method is characterized in that the step B further comprises the following steps:

Step B1. Receive the first wireless signal.

The channel parameter of the wireless channel experienced by the first reference signal can be used to determine a channel parameter of a wireless channel experienced by the first wireless signal.

As an embodiment, the antenna port group for transmitting the first reference signal and the antenna port group for transmitting the first wireless signal are the same, and the antenna port group includes one or more antenna ports.

As an embodiment, the channel parameters include a channel impulse response.

As an embodiment, the channel parameters include small scale fading.

As an embodiment, the first wireless signal is located in the first time unit in the time domain.

As a sub-embodiment of this embodiment, the first wireless signal occupies a portion of the first time unit in the time domain.

As a sub-embodiment of this embodiment, the first wireless signal occupies all or a portion of the first time interval in the time domain.

As a sub-embodiment of this embodiment, the first wireless signal occupies all or a portion of a given time interval in the time domain. Wherein the given time interval is a time interval outside the first time interval.

As an embodiment, the first wireless signal includes physical layer control signaling.

As an embodiment, the first wireless signal includes DCI (Downlink Control Information).

As an embodiment, the first wireless signal is transmitted on a downlink physical layer data channel (ie, a physical layer channel that can be used to transmit physical layer data).

As a sub-embodiment of the embodiment, the first radio signal is transmitted on a PDSCH (Physical Downlink Shared Channel).

As a sub-embodiment of this embodiment, the first wireless signal is transmitted on a Short Latency Physical Downlink Shared Channel (SPDSCH).

As an embodiment, the first wireless signal is transmitted on a downlink physical layer control channel (ie, a physical layer channel that can be used to transmit physical layer control).

As a sub-embodiment of the embodiment, the first radio signal is transmitted on a PDCCH (Physical Downlink Control Channel).

As a sub-embodiment of the embodiment, the first radio signal is transmitted on an EPDCCH (Enhanced Physical Downlink Control Channel).

As a sub-embodiment of the embodiment, the first radio signal is transmitted on a short Latency Physical Downlink Control Channel (sPDCCH).

As an embodiment, the transport channel corresponding to the first radio signal is a DL-SCH (Downlink Shared Channel).

As an embodiment, the physical layer channel corresponding to the first wireless signal is a PMCH (Physical Multicast Channel).

As an embodiment, the logical channel corresponding to the first wireless signal is an SC-MCCH (Single Cell Multicast Control Channel).

As an embodiment, the logical channel corresponding to the first wireless signal is an SC-MTCH (Single Cell Multicast Transport Channel).

As an embodiment, the first reference signal is used for channel estimation and demodulation of the first wireless signal.

- Step B2. Send a second wireless signal.

The first reference signal is used to determine the second wireless signal, and the second wireless signal includes CSI.

As an embodiment, the foregoing aspect is characterized in that the first reference signal is further used by the UE to evaluate a channel quality of a downlink channel of the base station to the UE, and perform feedback by using the second wireless signal.

As an embodiment, the CSI includes a {CRI (Channel State Information Reference Signal Resource Indicator), an RI (Rank Indicator), and a CQI (Channel Quality Indicator). At least one of PMI (Precoding Matrix Indicator).

As an embodiment, the UE performs channel estimation on the first reference signal, thereby determining the CSI (Channel State Information).

As an embodiment, the second wireless signal is transmitted in an uplink physical layer data channel (ie, a physical layer channel that can be used to transmit physical layer data).

As a sub-embodiment of the embodiment, the second radio signal is transmitted on a PUSCH (Physical Uplink Shared Channel).

As a sub-embodiment of this embodiment, the second radio signal is transmitted on a Short Latency Physical Uplink Shared Channel (SPUSCH).

As an embodiment, the second wireless signal is transmitted on an uplink physical layer control channel (ie, a physical layer channel that can only be used to transmit physical layer control signaling).

As a sub-embodiment of the embodiment, the second wireless signal is transmitted on a PUCCH (Physical Uplink Control Channel).

As a sub-embodiment of the embodiment, the second wireless signal is transmitted on a sPUCCH (Short Latency Physical Uplink Control Channel).

Specifically, according to an aspect of the invention, the method is characterized in that the step A further comprises the following steps:

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

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

As an embodiment, the first signaling is UE-specific RRC (Radio Resource Control) signaling.

As an embodiment, the first signaling is a Cell-Specific RRC. Signaling.

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

As a sub-embodiment of the embodiment, the first signaling includes scheduling information of the first wireless signal, where the scheduling information includes {occupied time-frequency resources, MCS (Modulation and Coding Status) At least one of NDI, RV (Redundancy Version, Redundancy Version, HARQ (Hybrid Automatic Repeat reQuest) process number}.

In one 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 a non-negative integer, and the second parameter is used to determine the first sequence.

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 A first value is determined, the first value being an initial value of a generator of the first sequence.

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

Step A10. Initialize the generator of the first sequence at the beginning of the first time interval.

An advantage of the above embodiment is that the generator of the first sequence is initialized at the beginning of each time interval, increasing the randomness of the first sequence.

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

As an embodiment, the first value is an integer.

As an embodiment, the determining, by the first time interval, the time domain position in the first time unit is used to determine that the first value is determined by: One is ok.

among them,

For the definition of n and _SCID , refer to TS 36.211.

Is a non-negative integer less than 504, and the

Equal to the PCI of the serving cell of the UE or the

Configured through high-level signaling. The n _{SCID is} determined by the DCI corresponding to the first wireless signal, and the SU-/MU-MIMO (Signle-User/Multi-User Multiple input multiple output) adopted by the UE is single-user/multi-user multiple input More out of the transmission method. n _{1 is} related to the time domain position of the first time interval in the first time unit.

Represents the largest integer not greater than X.

An advantage of the above embodiment is that the first value is implicitly obtained by the first time interval in a time domain position in the first time unit.

As a sub-embodiment of the embodiment, the first time unit includes 7 time intervals, and the first time interval is an ith time interval of the 7 time intervals, and the n ₁ is equal to (i -1). Where i is a positive integer greater than 0 and not less than 7.

As a sub-embodiment of the embodiment, the first time unit includes T time intervals, the first time interval is an ith time interval of the T time intervals, and the n ₁ is equal to (i -1) The remainder obtained by dividing by 7. Where i is a positive integer greater than 0 and not less than T.

As an embodiment, the using the second parameter to determine the first value means that the first value c is determined by one of the following four formulas.

among them,

For the definition of n and _SCID , refer to TS 36.211.

Is a non-negative integer less than 504, and the

Equal to the PCI of the serving cell of the UE or the

Configured through high-level signaling. The n _{SCID is} determined by the DCI corresponding to the first wireless signal, and the SU-/MU-MIMO (Signle-User/Multi-User Multiple input multiple output) adopted by the UE is single-user/multi-user multiple input More out of the transmission method. n ₂ is the second parameter.

Represents the largest integer not greater than X.

An advantage of the above embodiment is that the first value is determined by the second parameter of the explicit configuration.

In one embodiment, the time domain location of the first time interval in the first time unit and the second parameter are used to jointly determine the first variable.

As a sub-embodiment of this embodiment, the first value c is determined by one of the following six formulas.

Among them, n _S ,

And the definition of n _SCID refers to TS 36.211, where n _S represents the sequence number of the time slot to which the first wireless signal belongs in one radio frame, and is an integer not less than 0 and less than 20.

Is a non-negative integer less than 504, and the

Equal to the PCI of the serving cell of the UE or the

Configured through high-level signaling. The n _{SCID is} determined by the DCI corresponding to the first wireless signal, and the SU-/MU-MIMO (Signle-User/Multi-User Multiple input multiple output) adopted by the UE is single-user/multi-user multiple input More out of the transmission method. n _{1 is} related to the time domain position of the first time interval in the first time unit. n ₂ is the second parameter.

Represents the largest integer not greater than X.

As an auxiliary embodiment of the sub-embodiment, the first time unit includes T time intervals, and the first time interval is an ith time interval of the T time intervals, and the n ₁ is equal to ( I-1) The remainder obtained by dividing by 7. Where i is a positive integer greater than 0 and not less than T.

An advantage of the above embodiments and sub-embodiments is that the time domain position of the first time interval in the first time unit and the second parameter are used to jointly determine a first variable, in consideration of the At the same time as the time domain position of the first time interval, the generation manner of the first variable can be configured more flexibly.

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 a power of V of 2, and the first variable is equal to a second variable and a third The product of the variables, which are non-negative integers less than thirty.

As an embodiment, the V is 16.

In one embodiment, the time domain position of the first time interval in the first time unit is used to determine the second variable, and the value range of the second variable is a first integer set. At least one element included in the first set of integers is an integer greater than 10.

As a sub-embodiment of this embodiment, the first set of integers consists of 16 integers from 1 to 16.

In one embodiment, the second parameter is used to determine the second variable, the range of values of the second variable is a first set of integers, and at least one element of the first set of integers is greater than 10. Integer.

As an embodiment, the second variable is equal to

Where n _S represents the sequence number of the time slot to which the first wireless signal belongs in one radio frame, and the n _S is an integer not less than 0 and less than 20.

As an embodiment, the second variable is equal to

One of them. Where n _S represents the sequence number of the time slot to which the first wireless signal belongs in one radio frame, and the n _S is an integer not less than 0 and less than 20. n _{1 is} related to the time domain position of the first time interval in the first time unit.

As an embodiment, the second variable is equal to

One of them. Where n _S represents the sequence number of the time slot to which the first wireless signal belongs in one radio frame, and the n _S is an integer not less than 0 and less than 20. n ₂ is the second parameter.

As an embodiment, the third variable is equal to one of the following:

among them

Is a non-negative integer less than 504, and the

Equal to the PCI of the serving cell of the UE or the

Configured through high-level signaling. n ₁ in a first time interval from the time the first cell location of the time domain. n ₂ is the second parameter.

In one embodiment, the second parameter is used to determine the third variable, the value range of the third variable is a second integer set, and the second integer set includes at least one element that is greater than 1007. Integer.

As a sub-embodiment of this embodiment, the second set of integers consists of 512 odd numbers from 1 to 1023.

Specifically, according to an aspect of the invention, the above method is characterized in that the first value and the third parameter are linearly related, and the linear correlation coefficient of the first value and the third parameter is 1. The third parameter is configurable.

As an embodiment, the third parameter is dynamically configured, and the third parameter is 0 or 1.

As an embodiment, the third parameter is n _SCID . Wherein said

Is a non-negative integer less than 504, and the

Equal to the PCI of the serving cell of the UE or the

Configured through high-level signaling.

A method for use in a base station for low latency communication, including The following steps:

- step A. determining the first sequence;

- Step B. Send the first reference signal.

- Step B1. Send the first wireless signal.

Step B2. Receive the second wireless signal.

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

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 directly between two network devices. Join.

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 further used to determine a fourth parameter, the fourth parameter being used by a sender of the second signaling to generate a sequence of reference signals for the first time interval .

As a sub-embodiment of this embodiment, the second parameter and the fourth parameter are different.

As a sub-embodiment of this embodiment, the second signaling includes a first parameter set, where the first parameter set includes a positive integer number of parameters. The fourth parameter belongs to the first parameter set. The second parameter is a parameter other than the first parameter set.

As a sub-embodiment of this embodiment, the second parameter and the fourth parameter are both positive integers.

As a sub-embodiment of this embodiment, the second parameter and the fourth parameter each comprise a positive integer number of bits.

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

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

As an embodiment, the fifth parameter is used by the recipient of the third signaling to generate a sequence of reference signals for the first time interval. The second parameter and the fifth parameter are different.

As a sub-embodiment of the embodiment, the third signaling includes a second parameter set, and the second parameter set includes a positive integer number of parameters. The second parameter belongs to the second parameter set. The fifth parameter is a parameter other than the second parameter set.

As a sub-embodiment of this embodiment, the second parameter and the fifth parameter are both positive integers.

As a sub-embodiment of this embodiment, the second parameter and the fifth parameter each comprise a positive integer number of bits.

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, in the second parameter} At least one of is used to determine a first value, the first value being an initial value of a generator of the first sequence.

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

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

a first processing module: for determining the first sequence;

a second processing module: for receiving the first reference signal.

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.

In one embodiment, the first processing module is further configured to initialize the generator of the first sequence at a start time of the first time interval.

As an embodiment, the second processing module is further configured to receive the first wireless signal. The channel parameter of the wireless channel experienced by the first reference signal can be used to determine a channel parameter of a wireless channel experienced by the first wireless signal.

As an embodiment, the second processing module is further configured to send a second wireless signal. The first reference signal is used to determine the second wireless signal, and the second wireless signal includes CSI.

The present invention discloses a base station device used for low-latency communication, which includes the following modules:

a third processing module: for determining the first sequence;

a fourth processing module: for transmitting the first reference signal.

As an embodiment, the fourth processing module is further configured to send the first wireless signal. The channel parameter of the wireless channel experienced by the first reference signal can be used to determine a channel parameter of a wireless channel experienced by the first wireless signal.

In one embodiment, the fourth processing module is further configured to receive the second wireless signal. The first reference signal is used to determine the second wireless signal, and the second wireless signal includes CSI.

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.

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:

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

- 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.

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

By establishing the first sequence and the first parameter, the generation of the first sequence is related to the time domain position of the first time interval in the first time unit, thereby ensuring The randomness of the first reference signal and the characteristics of the anti-adjacent cell interference.

By establishing the first sequence and the second parameter, the generation of the first sequence may be configured by signaling, thereby further improving randomness of the first reference signal and anti-adjacent cell interference. Features and more flexible design.

By transmitting the second signaling and the third signaling on the backhaul link, it is ensured that the neighboring base stations know the configuration manner of the first reference signals of each other, thereby further avoiding inter-cell interference.

DRAWINGS

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

1 shows a flow chart of transmission of the first wireless signal in accordance with one embodiment of the present invention;

2 shows a schematic diagram of the first time interval and the first time unit, in accordance with an embodiment of the present invention;

Figure 3 shows a schematic diagram of the first time unit and the first time window in accordance with one embodiment of the present invention;

4 is a block diagram showing the structure of a processing device in a UE according to an embodiment of the present invention.

FIG. 5 is a block diagram showing the structure of a processing device in a base station according to an embodiment of the present invention; FIG.

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 flow chart of transmission of one of the first wireless signals in accordance with the present invention, as shown in FIG. In Fig. 1, a base station N1 is a maintenance base station of a serving cell of UE U2. Wherein, the steps identified in blocks F0 through F4 are optional.

For the base station N1 , the second signaling is received through the backhaul link in step S10; the first signaling is transmitted in step S11; the generator of the first sequence is initialized at the beginning of the first time interval in step S12; Determining the first sequence in S13; transmitting third signaling through a backhaul link in step S14; transmitting a first reference signal in step S15; transmitting a first wireless signal in step S16; receiving Two wireless signals.

For UE U2 , receiving the first signaling in step S20; initializing the generator of the first sequence at the first time interval start time in step S21; determining the first sequence in step S22; receiving the first sequence in step S23 a reference signal; receiving the first wireless signal in step S24; transmitting the second wireless signal in step S25.

In Embodiment 1, the first reference 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 the {first parameter, the second parameter} At least one of them is relevant. The first parameter is related to at least the former of the first time interval in the first time unit, the first time unit in the time domain position in the first time window, the second parameter It 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 first sequence is used to generate the first reference signal. The channel parameters of the wireless channel experienced by the first reference signal can be used to determine channel parameters of the wireless channel experienced by the first wireless signal. The first reference signal is used to determine the second wireless signal, the second wireless signal comprising CSI. {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 a first value, the first value is the first The initial value of a sequence of generators. {The first time interval is at a time domain position in the first time unit, and at least one of the second parameters} is used to determine a 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 first variable is equal to a second variable and a third The product of the variables, which are non-negative integers less than thirty. The first value and the third parameter are linearly related, and the linear correlation coefficient of the first value and the third parameter is 1. The third parameter is configurable.

As a sub-embodiment, the first signaling is a DCI for a downlink grant of the first wireless signal.

As a sub-embodiment, the first signaling is used to determine from the second parameter set The second parameter is configured, and the second parameter set is configured by high layer signaling.

As a subsidiary embodiment of the sub-embodiment, the high layer signaling is UE-specific RRC signaling.

As a subsidiary embodiment of the sub-embodiment, the high layer signaling is cell-specific RRC signaling.

Example 2

Embodiment 2 illustrates a schematic diagram of one of the first time interval and the first time unit in accordance with the present invention, as shown in FIG. In Figure 2, the first time interval is in the first time unit in the time domain. The first time unit includes T time intervals in the time domain, and the first time interval is one of the T time intervals. Where T is a positive integer.

As a sub-embodiment, the T time intervals are continuous in the first time unit.

As a sub-embodiment, the T time intervals occupy the first time unit in the time domain.

As a sub-embodiment, there are at least two time intervals in the T time intervals, and the durations of the two time intervals are different.

As a sub-embodiment, the T time intervals are the same for the duration of the time domain.

Example 3

Embodiment 3 illustrates a schematic diagram of one of the first time unit and the first time window in accordance with the present invention, as shown in FIG. In Figure 3, the first time unit is located in the first time window in the time domain. The first time window includes K time units in the time domain, and the first time unit is one of the K time units. Where K is a positive integer.

As a sub-embodiment, the K time units are continuous in the first time window.

As a sub-embodiment, the K time units occupy the first time window in the time domain.

As a sub-embodiment, the duration of the K time units in the time domain is the same.

Example 4

Embodiment 4 exemplifies a structural block diagram of a processing device in a user equipment, as shown in FIG. In FIG. 4, the user equipment processing apparatus 100 is mainly composed of a first processing module 101 and a second processing module 102.

a first processing module 101: for determining a first sequence;

The second processing module 102 is configured to receive the first reference signal.

In Embodiment 4, the first reference signal occupies a first time interval in a time domain, the duration of the first time interval is less than 1 millisecond, and the first sequence and the {first parameter, the second parameter} At least one of them is relevant. The first parameter is related to at least the former of the first time interval in the first time unit, the first time unit in the time domain position in the first time window, the second parameter It 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 first sequence is used to generate the first reference signal.

As a sub-embodiment, the first processing module 101 is further configured to receive the first signaling. The first signaling is used to determine the second parameter.

As a sub-embodiment, the first processing module 101 is further configured to initialize the generator of the first sequence at the start time of the first time interval.

As a sub-embodiment, the second processing module 102 is further configured to receive the first wireless signal. The channel parameter of the wireless channel experienced by the first reference signal can be used to determine a channel parameter of a wireless channel experienced by the first wireless signal.

As a sub-embodiment, the second processing module 102 is further configured to send a second wireless signal. The first reference signal is used to determine the second wireless signal, and the second wireless signal includes CSI.

Example 5

Embodiment 5 exemplifies a structural block diagram of a processing device in a base station device, as shown in FIG. In FIG. 5, the base station device processing apparatus 200 is mainly composed of a third processing module 201 and a fourth processing module 202.

a third processing module 201: for determining the first sequence;

a fourth processing module 202: for transmitting the first reference signal.

In Embodiment 5, the first reference 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 the {first parameter, the second parameter} At least one of them is relevant. The first parameter is related to at least the former of the first time interval in the first time unit, the first time unit in the time domain position in the first time window, the second parameter It 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 first sequence is used to generate the first reference signal.

As a sub-embodiment, the fourth processing module 202 is further configured to send the first wireless signal. number. The channel parameter of the wireless channel experienced by the first reference signal can be used to determine a channel parameter of a wireless channel experienced by the first wireless signal.

As a sub-embodiment, the fourth processing module 202 is further configured to receive the second wireless signal. The first reference signal is used to determine the second wireless signal, and the second wireless signal includes CSI.

As a sub-embodiment, the first value is the initial value of the generator of the first sequence. {The first time interval is at a time domain position in the first time unit, and at least one of the second parameters} is used to determine a 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 16 of 2, the first variable is equal to a second variable and a third The product of the variables. In one embodiment, the time domain position of the first time interval in the first time unit is used to determine the second variable, and the value range of the second variable is a first integer set. The first set of integers consists of 16 integers from 1 to 16. The second parameter is used to determine the third variable, the range of values of the third variable is a second set of integers, and the second set of integers consists of 512 odd numbers from 1 to 1023.

As a sub-embodiment, the third processing module 201 is further configured to send the first signaling. The first signaling is used to determine the second parameter.

As a sub-embodiment, the third processing module 201 is configured to send the first signaling, and the third processing module 201 is further used to: at least one of the following:

As a subsidiary embodiment of this sub-embodiment, the first signaling is higher layer signaling.

As a subsidiary embodiment of this sub-embodiment, the first signaling is used to determine the second parameter from the second set of parameters. And the second parameter set is configured by high layer signaling.

As an example of the accessory embodiment, the high layer signaling is sent by the base station device to the user equipment by air interface signaling.

One of ordinary skill in the art can understand 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. Quality, such as read-only memory, hard disk or optical disc. 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 and the terminal in the present invention include but are not limited to mobile phones, tablet computers, notebooks, vehicle communication devices, wireless sensors, network cards, Internet of things terminals, RFID terminals, NB-IOT terminals, and MTC (Machine Type Communication). Terminals, eMTC (enhanced MTC) terminals, data cards, network cards, in-vehicle communication devices, low-cost mobile phones, low-cost tablets and other wireless communication devices. The base station 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 for low latency communication, comprising the steps of:

- step A. determining the first sequence;

- step B. receiving the first reference signal;

The first reference 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 is related to at least the former of the time domain position of the first time interval in the first time unit, and the time domain position of the first time unit 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 first sequence is used to generate the first A reference signal.
The method of claim 1 wherein said step B further comprises the steps of:

Step B1. Receive the first wireless signal.

The channel parameter of the wireless channel experienced by the first reference signal can be used to determine a channel parameter of a wireless channel experienced by the first wireless signal.
The method of claim 1 wherein said step B further comprises the steps of:

- Step B2. Send a second wireless signal.

The first reference signal is used to determine the second wireless signal, and the second wireless signal includes CSI.
The method according to claim 1-3, wherein the step A further comprises the following steps:

Step A0. Receive first signaling, the first signaling being used to determine the second parameter.
The method according to claim 1 or 4, wherein {the first time interval is in a time domain position in the first time unit, at least one of the second parameters} is used The first value is determined, the first value being an initial value of a generator of the first sequence.
The method according to claim 5, wherein {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 a power of V of 2, and the first variable is equal to a second variable and a third The product of the variables, which are non-negative integers less than thirty.
The method according to claim 5 or 6, wherein the first value and the third parameter are linearly related, and the linear correlation coefficient of the first value and the third parameter is 1. The third parameter It is configurable.
A method for use in a base station for low latency communication, comprising the steps of:

- step A. determining the first sequence;

- step B. transmitting a first reference signal;

The first reference 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 is related to at least the former of the time domain position of the first time interval in the first time unit, and the time domain position of the first time unit 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 first sequence is used to generate the first A reference signal.
The method according to claim 8, wherein said step B further comprises the steps of:

- step B1. transmitting the first wireless signal;

The channel parameter of the wireless channel experienced by the first reference signal can be used to determine a channel parameter of a wireless channel experienced by the first wireless signal.
The method according to claim 8, wherein said step B further comprises the steps of:

Step B2. Receive the second wireless signal.

The first reference signal is used to determine the second wireless signal, and the second wireless signal includes CSI.
The method according to any one of claims 8-10, wherein the step A further comprises the following steps:

Step A0. Sending first signaling, the first signaling being used to determine the second parameter.
The method according to any of claims 8-11, 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 any one of claims 8-12, wherein the step A further comprises the following steps:

- step A2. transmitting the third signaling via the backhaul link;

The third signaling is used by a receiver of the third signaling to determine a second parameter.
The method according to claim 8 or 11, wherein said said first time Separating at least one of the second parameters} in the time domain position in the first time unit 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 14, wherein {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 a 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 first variable is equal to a second The product of the variable and the third variable, which is a non-negative integer less than 30.
The method according to claim 14 or 15, wherein the first value and the third parameter are linearly related, and the linear correlation coefficient of the first value and the third parameter is 1; the third parameter It is configurable.
A user equipment used for low-latency communication, including the following modules:

a first processing module: for determining the first sequence;

a second processing module: for receiving the first reference signal;

The first reference 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 is related to at least the former of the time domain position of the first time interval in the first time unit, and the time domain position of the first time unit 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 first sequence is used to generate the first A reference signal.
The user equipment according to claim 17, 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 communication, which includes the following modules:

a third processing module: for determining the first sequence;

a fourth processing module: configured to send the first reference signal;

The first reference 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 is related to at least the former of the time domain position of the first time interval in the first time unit, and the time domain position of the first time unit 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 first sequence is used to generate the first a reference letter number.
The base station device according to claim 19, 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 19 or 20, 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.