WO2018076361A1

WO2018076361A1 - Uplink transmission method, terminal device and access network device

Info

Publication number: WO2018076361A1
Application number: PCT/CN2016/104102
Authority: WO
Inventors: 闫志宇; 官磊
Original assignee: 华为技术有限公司
Priority date: 2016-10-31
Filing date: 2016-10-31
Publication date: 2018-05-03
Also published as: CN109863800A

Abstract

Provided in embodiments of the present invention are an uplink transmission method, a terminal device and an access network device. The method comprises: a terminal device receiving control information sent by an access network device, wherein the control information comprises first indication information which is used to indicate the terminal device to send a sounding reference signal SRS and is used to transmit a relative position of a first sub-frame of the SRS in a sub-frame set, and second indication information which is used to indicate the terminal device to send uplink information within a short transmission time interval STTI of a STTI set, and wherein the sub-frame set includes a sub-frame in which at least one STTI of the STTI set is located; the terminal device sending the SRS in the first sub-frame according to the first indication information, and sending the uplink information in the STTI of the STTI set according to the second indication information. The embodiment of the present invention can determine a time domain resource of the SRS. Additionally, the scheduling of the SRS can be more flexible by indicating the terminal device to transmit the relative position of the sub-frame of the SRS in the sub-frame set.

Description

Uplink transmission method, terminal device and access network device

Technical field

The present invention relates to the field of communications, and in particular, to an uplink transmission method, a terminal device, and an access network device.

Background technique

In the existing system, the detection of the uplink channel is completed by a Sounding Reference Symbol (SRS). By transmitting the SRS by the UE, the base station can obtain uplink channel information, thereby performing resource scheduling and measurement of the uplink transmission. In the prior art, for convenience, the SRSs sent by multiple terminal devices are multiplexed in one symbol by means of frequency division, code division, etc., and the base station can configure a subframe set for transmitting the SRS for the UE through high layer signaling. After the subframe n is the terminal device indicating the request information for transmitting the SRS, the terminal device determines the subframe position for transmitting the SRS according to the location of the subframe n and the subframe set pre-configured by the base station for the terminal device. For example, after receiving the SRS request information sent by the base station in the subframe n, the terminal device transmits the SRS in the subframe n+k. The subframe n+k is the first subframe in the subframe set pre-configured by the base station that satisfies k and is greater than or equal to 4.

Since the subframe for transmitting the SRS in the prior art is determined based on the subframe in which the base station transmits the SRS request and the subframe set in which the base station transmits the SRS configured in advance for the UE, the scheduling for the terminal device to transmit the SRS is not flexible enough.

Summary of the invention

The embodiments of the present invention provide an uplink transmission method, a terminal device, and an access network device, which can make the scheduling of the SRS more flexible.

In a first aspect, an uplink transmission method is provided, including:

The terminal device receives the control information sent by the access network device, where the control information includes the first indication information and the second indication information, where the first indication information is used to indicate that the terminal device sends the sounding reference signal SRS and is used for transmitting the SRS. a relative position of the first subframe in the set of subframes, where the second indication information is used to indicate that the terminal device sends uplink information in an STTI in a short transmission time interval STTI set, where the subframe set includes the STTI a subframe in which at least one STTI in the set is located;

The terminal device sends an SRS in the first subframe according to the first indication information, and sends uplink information in an STTI in the STTI set according to the second indication information.

The STTI set may include one or more STTIs.

The scheduling of the SRS can be made more flexible by indicating to the terminal device the relative position of the subframes for transmitting the SRS in the subframe set.

Optionally, before the terminal device sends the SRS in the first subframe according to the first indication information, the terminal device further includes:

Determining, by the terminal device, the subframe set according to the STTI set indicated by the second indication information, and determining, according to the subframe set and a relative position of the first subframe in the subframe set. The first subframe is described.

In a possible implementation, the subframe set is composed of a subframe in which the STTI in the STTI set is located, or the subframe set is a sub-frame in which the STTI of the STTI set includes a preset symbol. A frame composition, wherein the preset symbol is a defined symbol for transmitting an SRS.

Optionally, the preset symbol is the last symbol in the subframe.

Optionally, the subframe in which the STTI in the STTI set is located may be one or more subframes.

In a possible implementation manner, at least one STTI in the STTI set does not include the preset symbol.

In a possible implementation manner, the STTI in the STTI set does not include a preset symbol of a subframe in which at least one STTI in the STTI set is located.

In a possible implementation manner, the first indication information includes information indicating a set of SRS parameters adopted by the terminal device, where the relative position satisfies a correspondence relationship with subframe position information in the SRS parameter set. .

In a possible implementation manner, the relative position and the subframe position information in the SRS parameter set satisfy the following relationship:

k=mod(l,Q)

Where k is the position number of the first subframe in the subframe set, l is the subframe position information in the SRS parameter set, and Q is the number of subframes included in the subframe set.

In a possible implementation, the length of time of one subframe is equal to the sum of time lengths of at least two STTIs.

In a second aspect, an uplink transmission method is provided, including:

The terminal device receives the control information sent by the access network device, where the control information includes the first indication information and the second indication information, where the first indication information is used to instruct the terminal device to send the sounding reference signal SRS, the second The indication information is used to indicate that the terminal device is in a short transmission time interval The STTI in the STTI set sends uplink information;

The terminal device sends an SRS in the first subframe according to the first indication information, and sends uplink information in the STTI in the STTI set according to the second indication information, where

The first subframe satisfies a correspondence relationship with the STTI in the STTI set, or the first subframe satisfies a correspondence relationship with a second subframe used to transmit the control information.

The STTI set may include one or more STTIs.

This makes it possible to determine the time domain resource of the SRS according to the STTI set for transmitting the uplink information or the second subframe for transmitting the control information, thereby making the scheduling of the SRS more flexible.

Optionally, before the sending, by the terminal device, the SRS in the first subframe according to the first indication information, the method further includes:

Determining, by the terminal device, the first subframe according to the corresponding relationship between the STTI set and the first subframe and the STTI in the STTI set; or

The terminal device determines the first subframe according to the correspondence between the second subframe and the first subframe and the second subframe.

In a possible implementation manner, the first subframe satisfies a correspondence with the STTI in the STTI set, and the first subframe is a subframe in which the last STTI in the STTI set is located.

In a possible implementation, the first indication information is further used to indicate a position offset of the first subframe relative to a subframe in which the preset STTI in the STTI set is located,

The first subframe satisfies the correspondence with the STTI in the STTI set, and includes:

The position offset is separated between the first subframe and a subframe in which the preset STTI in the STTI set is located.

In a possible implementation manner, when the STTI set includes multiple STTIs, the multiple STTIs are temporally adjacent STTIs, and the multiple STTIs are earlier than preset symbols of the first subframe. a length of time of at least one symbol, wherein the preset symbol is a symbol for transmitting an SRS.

In a possible implementation manner, the first indication information is further used to indicate a position offset of the first subframe relative to the second subframe,

The first subframe satisfies the correspondence with the second subframe used for transmitting the control information, and includes:

The position offset is separated between the first subframe and the second subframe.

In a third aspect, an uplink transmission method is provided, including:

The access network device sends control information to the terminal device, where the control information includes first indication information and second indication information, where the first indication information is used to instruct the terminal device to send the sounding reference signal SRS and the SRS for transmitting a relative position of the first subframe in the subframe set, where the second indication information is used to instruct the terminal device to send uplink information in an STTI in the short transmission time interval STTI set, where the subframe set includes the STTI set a subframe in which at least one STTI is located;

The access network device receives the SRS sent by the terminal device in the first subframe, and receives the uplink information sent by the terminal device in the STTI in the STTI set.

The STTI set may include one or more STTIs.

Optionally, before the access network device receives the SRS sent by the terminal device in the first subframe, the method further includes:

The access network device determines the subframe set according to the STTI set, and determines the first subframe according to the subframe set and a relative position of the first subframe in the subframe set.

k=mod(l,Q)

In a fourth aspect, an uplink transmission method is provided, including:

The access network device sends control information to the terminal device, where the control information includes first indication information and second indication information, where the first indication information is used to instruct the terminal device to send a sounding reference signal SRS, the second indication The information is used to instruct the terminal device to send uplink information in an STTI in a short transmission time interval STTI set;

The access network device receives the SRS sent by the terminal device in the first subframe, and receives the uplink information sent by the terminal device in the STTI in the STTI set,

The STTI set may include one or more STTIs.

Optionally, before the receiving, by the access network device, the SRS sent by the terminal device in the first subframe, the method further includes:

Determining, by the access network device, the first subframe according to the corresponding relationship between the STTI set and the first subframe and the STTI in the STTI set; or

The access network device determines the first subframe according to the correspondence between the second subframe and the first subframe and the second subframe.

In a possible implementation manner, the first subframe satisfies a correspondence with the STTI in the STTI set, and includes:

The first subframe is a subframe in which the last STTI in the STTI set is located.

In a possible implementation manner, when the STTI set includes multiple STTIs, the multiple STTIs are temporally adjacent STTIs, and the multiple STTIs and preset symbols of the first subframe are At least one symbol is spaced apart, wherein the preset symbol is a symbol for transmitting an SRS.

The fifth aspect provides a terminal device, where the terminal device is used to implement the method according to any one of the foregoing possible implementation manners of the first aspect or the first aspect.

In particular, the terminal device may comprise means for performing the method of the first aspect or any of the possible implementations of the first aspect.

The sixth aspect provides an access network device, where the access network device is used to implement the method according to any one of the foregoing possible implementation manners of the second aspect or the second aspect.

In particular, the access network device may comprise means for performing the method described in the second aspect or any of the possible implementations of the second aspect.

The seventh aspect provides a terminal device, where the terminal device is used to implement the method according to any one of the foregoing possible implementation manners of the third aspect or the third aspect.

In particular, the terminal device may comprise means for performing the method described in the third aspect or any of the possible implementations of the third aspect.

The eighth aspect provides an access network device, where the access network device is used to implement the method according to any one of the foregoing possible implementation manners of the fourth aspect or the fourth aspect.

In particular, the access network device may comprise means for performing the method described in the fourth aspect or any of the possible implementations of the fourth aspect.

A ninth aspect provides a terminal device, including: a processor, a receiver, a transmitter, a memory, and a bus system, wherein the processor, the receiver, the transmitter, and the memory are connected by a bus system, and the memory is used to store instructions or codes. The processor is operative to execute the instructions or code stored by the memory, such that the terminal device performs the method of any of the first aspect or the first aspect of the first aspect.

A tenth aspect provides an access network device, including: a processor, a transmitter, a receiver, a memory, and a bus system, wherein the processor, the transmitter, the receiver, and the memory are connected by a bus system, and the memory is used to store an instruction or The code, the processor, for executing the instructions or code stored by the memory, such that the access network device performs the method of any of the possible implementations of the second aspect or the second aspect.

In an eleventh aspect, a terminal device is provided, comprising: a processor, a receiver, a transmitter, a memory, and a bus system, wherein the processor, the receiver, the transmitter, and the memory are connected by a bus system, and the memory is used to store instructions or codes. The processor is configured to execute the instructions or code stored by the memory, such that the terminal device performs the method of any one of the third aspect or the third aspect.

According to a twelfth aspect, an access network device includes: a processor, a transmitter, a receiver, a memory, and a bus system, wherein the processor, the transmitter, the receiver, and the memory are connected by a bus system, and the memory is configured to store the instruction Or code, the processor, for executing the instructions or code stored by the memory, such that the access network device performs the method of any of the possible implementations of the fourth aspect or the fourth aspect.

DRAWINGS

1 is a schematic flow chart of an uplink transmission method according to an embodiment of the present invention;

2A, 2B, 2C, and 2D are schematic views of an STTI according to an embodiment of the present invention, respectively;

FIG. 3 is a schematic diagram of an STTI according to another embodiment of the present invention; FIG.

4 is a schematic diagram of an STTI according to another embodiment of the present invention;

FIG. 5 is a schematic diagram of an STTI according to another embodiment of the present invention; FIG.

6A, FIG. 6B, and FIG. 6C are respectively schematic diagrams showing relationship between a first subframe and an STTI in an STTI set according to an embodiment of the present invention;

7 is a schematic diagram of a relationship between a first subframe and an STTI in an STTI set according to another embodiment of the present invention;

FIG. 8 is a schematic diagram of a relationship between a first subframe and a second subframe according to an embodiment of the present invention;

FIG. 9 is a terminal device according to an embodiment of the present invention; FIG.

FIG. 10 is a terminal device according to another embodiment of the present invention; FIG.

11 is an access network device according to an embodiment of the present invention;

Figure 12 is an access network device in accordance with another embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be described below with reference to the accompanying drawings in the embodiments of the present invention.

It should be understood that the technical solution of the present invention can be applied to various communication systems, such as: wireless wifi, Worldwide Interoperability for Microwave Access (WiMAX), Global System of Mobile communication (Global System of Mobile communication, GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution ( Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, Universal Mobile Telecommunication System (UMTS), and The 3rd Generation Partnership Project The 3GPP) related cellular system and the like are not limited in the embodiment of the present invention, but for convenience of description, the embodiment of the present invention will be described by taking an LTE network as an example.

The access network device involved in the embodiment of the present invention may be used to provide a wireless communication function for the terminal device. The access network device may include various forms of macro access network devices, micro access network devices (also referred to as small stations), relay stations, access points, and the like. The access network device may be an access network device (Base T access network station, BTS) in GSM or CDMA, or an access network device (NodeB, NB) in WCDMA, or may be in LTE. The evolved access network device (Evolutional Node B, eNB or e-NodeB), and may be the corresponding device gNB in the 5G network. For convenience of description, in all embodiments of the present invention, the foregoing apparatus for providing a wireless communication function for a terminal device is collectively referred to as an access network device.

In the embodiment of the present invention, the terminal device may also be referred to as a user equipment (User Equipment, UE), a mobile station (Mobile Station, MS), a mobile terminal (Mobile Terminal), etc., and the terminal device may be wirelessly accessed. The Radio Access Network (RAN) communicates with one or more core networks. For example, the terminal device may be a mobile phone (or “cellular” phone), a computer with a mobile terminal, etc., for example, the terminal device may also be Portable, pocket, handheld, computer built-in or in-vehicle mobile devices that exchange language and/or data with a wireless access network. The embodiment of the invention is not specifically limited.

Embodiments of the present invention can be applied to systems that use an unlicensed spectrum for communication.

In order to achieve friendly coexistence with systems such as Wireless Fidelity (Wi-Fi) on the unlicensed spectrum, the terminal device uses a Listen-Before-Talk (LBT) channel access mechanism when transmitting signals. The Clear Channel Assessment (CCA) evaluates the communication channel. The UE can use the unlicensed spectrum only if the evaluation result is that the channel is idle. The channel on the channel sends data. After the device is idle through the channel, it is allowed to occupy the unlicensed spectrum to send data, and then the unlicensed spectrum is used to transmit data. However, the length of time that the unlicensed spectrum is used to transmit data is limited. The length of time that the device is allowed to occupy the unlicensed spectrum to send data is the Maximum Channel Occupancy Time (MCOT).

The wireless communication device performs idle channel evaluation in the unlicensed spectrum. There are two types: the first evaluation type: the device first listens to the channel and determines that the channel is idle during a delay period of _Tf = 16 us. The device then performs a single-slot CCA listening, the single-slot CCA listening period T _sl , where T _sl = 9 μs. If the device still detects that the channel is idle during the time of T _sl , the device can transmit data on the channel. Second evaluation type: The device randomly selects a random number N=N _init between 0 and CW _p as the initial value of the random backoff count. The device listens to the channel to determine a channel during the delay (defer duration) within a time T _d is an idle state, where _{_{_{T d = T f + m p}}} * T sl, 16us≤T f ≤16us + T s, 9us≤T _{sl ≤9us} + T _{_s,} T _s is the time between the sampling interval. m _p is a value corresponding to the priority type of the data transmitted by the device. The device then performs single-slot CCA listening one by one, and the single-slot CCA listening period is T _sl , where T _sl = 9 μs. If the device evaluates the channel in the single-slot CCA listening time as the channel is idle, the random backoff count value is decremented by one; if the device evaluates the channel in the single-slot CCA listening time as the channel is busy, then The above random backoff count value N does not change. When the random backoff count value is reduced to 0, the device can determine that the final channel evaluation result is that the channel is idle, and the device can transmit data on the channel. When the device performs the channel idle channel evaluation with the first evaluation type, the channel evaluation process is short, and when the result of the evaluation channel is that the channel is idle, the time allowed to occupy the channel is short. When the device performs the channel idle channel evaluation with the second evaluation type, the channel evaluation process is long, and when the result of the evaluation channel is that the channel is idle, the time allowed to occupy the channel is long.

FIG. 1 is a schematic flowchart of an uplink transmission method 100 according to an embodiment of the present invention. As shown in FIG. 1, method 100 can include the following.

The access network device sends the control information to the terminal device, where the control information includes the first indication information and the second indication information, where the first indication information is used to indicate that the terminal device sends the SRS and is used to transmit the first subframe for transmitting the SRS. The second indication information is used to indicate that the terminal device sends the uplink information in the STTI in the at least one Short Transmission Time Interval (STTI) set, where the subframe set includes the STTI set. At least one subframe in which the STTI is located.

One or more STTIs may be included in the STTI set. At least one STTI in the STTI set The subframe in which it is located may be one or more subframes, that is, the subframe set may include one or more subframes.

The control information may be carried in Downlink Control Information (DCI) of the uplink grant grant (UL grant). The control information is used to schedule the terminal device to send uplink information in one STTI, or to schedule the terminal device to send uplink information in more than one STTI. That is, the control information scheduling terminal device transmits uplink information in the STTI in the STTI set, where the STTI set includes one or more STTIs. The uplink information may include uplink data and/or uplink control information sent by the PUSCH, where the uplink control information may be Hybrid Automatic Repeat ReQuest (HARQ) response information HARQ-ACK and channel state information (CSI, Channel- At least one of State Information). The HARQ-ACK includes a HARQ acknowledgement (ACK), a HARQ non-acknowledgement (NACK), and a HARQ discontinuous transmission (DTX).

The length of the STTI is less than the length of time of one subframe. Subframes can refer to the definition of an existing protocol or to the definitions in future protocols. For example, the length of time for one subframe may be 1 ms as specified by the existing protocol, or may be other lengths of time specified by future protocols. In some embodiments, the length of time of one subframe is equal to the sum of the lengths of time of at least two STTIs.

For example, the length of one subframe may be 14 symbols, the length of one STTI may be 7 symbols, or the length of 2, 3, or 4 symbols. 2A, 2B, 2C and 2D are shown.

In some embodiments, each STTI in the STTI set has the same length of time, that is, the STTI in the STTI set is the same type of STTI. In other embodiments, the length of the STTI in the STTI set may be partially different. That is, the STTI set may include at least two types of STTIs, where each type of STTI has a different time length, as shown in FIG. Show.

For example, six subframes are included in one subframe, and the number of symbols of six STTIs is three, two, two, two, two, and three, respectively, from time to time; or, from time to time After that, the number of symbols of the six STTIs is two, two, three, two, two, and three; or, in terms of time from front to back, the number of symbols of the six STTIs is two, 2, respectively. One, two, two, two, two. For example, if there are 4 STTIs in one subframe, the number of symbols of 4 STTIs is 3, 4, 3, and 4 respectively in the time from front to back; or, from the front to the back, 4 STTIs. The number of symbols is 4, 3, 4, 3; or, from front to back, 4 in time The number of symbols in the STTI is 4, 3, 3, and 4, respectively. Alternatively, the number of symbols of the four STTIs is three, four, four, and three, respectively, from the front to the back. For another example, two STTIs are included in one subframe, and the number of symbols of the two STTIs is seven and seven, respectively, from front to back.

The granularity of the data scheduling of the access network device to the terminal device in time may be in units of one subframe or in units of STTI.

The time range of an STTI is in a corresponding subframe, and the subframe may be referred to as a subframe in which the STTI is located. For example, as shown in FIG. 2A, STTI 1 and STTI 2 are included in one subframe, and the number of symbols of STTI 1 and STTI 2 is 7, 7 respectively. The subframe where STTI 1 is located is subframe n, where STTI 2 is located. The subframe is also subframe n. In the example shown in FIG. 2A, the subframe in which the STTI 1 is located and the subframe in which the STTI 2 is located are the same subframe.

After receiving the control information sent by the access network device, the terminal device sends the SRS in the first subframe according to the first indication information, and sends the uplink information in the STTI in the STTI set according to the second indication information.

The access network device may receive the SRS sent by the terminal device in the first subframe, and receive the uplink information sent by the terminal device on the STTI in the STTI set.

The first subframe may be an uplink subframe or a special subframe. A special subframe refers to a subframe that can be used for both uplink transmission and downlink transmission.

The terminal device may determine the subframe set according to the STTI set indicated by the second indication information, and determine the first subframe according to the relative position of the first subframe indicated by the first indication information in the subframe set and the subframe set. Therefore, the terminal device may send the SRS on the preset symbol of the first subframe according to the first indication information, where the preset symbol is a defined symbol for transmitting the SRS.

It should be noted that, according to the LBT rule that occupies the unlicensed spectrum transmission information, if the first subframe is a subframe on the unlicensed spectrum, the terminal device needs to ensure that the location for transmitting the SRS is allowed to occupy the subframe before transmitting the SRS. Unlicensed spectrum to send information. Similarly, if the STTI in the STTI set is the STTI on the unlicensed spectrum, the terminal device needs to ensure that the location for transmitting the STTI in the STTI set is allowed to occupy the license-free before the STTI in the STTI set sends the uplink information. The spectrum sends information. If the unlicensed spectrum transmission information is not allowed to be occupied at the location for transmitting the SRS, the terminal device does not transmit the SRS in the first subframe. Likewise, if the unlicensed spectrum transmission information is not allowed to be occupied at the location for transmitting the STTI in the STTI set, the terminal device does not transmit the STTI in the STTI set. If it is allowed to occupy the unlicensed spectrum transmission information at the location for transmitting part of the STTI in the STTI set, the terminal device only transmits these parts in the STTI set. Sub-STTI.

It should be understood that the preset symbols of one subframe may be used for transmitting SRS, and may also be used for transmitting uplink information. When the subframe is used as a subframe for transmitting the SRS, the preset symbol in the subframe is used to transmit the SRS; when the subframe is not used as the subframe for transmitting the SRS, the preset symbol of the subframe is used The transmission of information or preset symbols of the subframe is not used to transmit any information.

For example, the preset symbol of one subframe may be the last symbol of one subframe.

The access network device and the terminal device may pre-arrange preset symbols, or may pre-configure preset symbols in the access network device and the terminal device. If the subframe for transmitting the SRS is determined, the terminal device can transmit the SRS on the preset symbol of the subframe.

In the prior art, the access network device pre-configures a subframe set for transmitting the SRS, and the terminal device selects the subframe according to the subframe position for transmitting the uplink information indicated in the received control information. A subframe for transmitting an SRS is selected in the set. Since the terminal device has to select a subframe in which the SRS is transmitted from the pre-configured subframe set, the scheduling of the SRS is not flexible enough.

Therefore, in the embodiment of the present invention, the subframe set consisting of the subframe in which the at least one STTI in the STTI set for transmitting the uplink information is set according to the control information, and the subframe for transmitting the SRS indicated by the control information are in the subframe set. The relative position in the middle determines the subframe in which the SRS is transmitted, which enables the scheduling of the SRS to be more flexible.

Optionally, the subframe set may be composed of a subframe in which the STTI in the STTI set is located, or the subframe set may also be composed of a subframe in which the STTI of the STTI set includes the preset symbol, where the preset symbol is a definition. The symbol used to transmit the SRS.

The two different sets of subframes are described below in conjunction with the two cases of the STTI set shown in FIGS. 4 and 5.

If the subframe set is composed of the subframe in which the STTI in the STTI set is located, the STTI set shown in FIG. 4 includes STTI 1 to STTI 6, and the subframe where STTI 1 to STTI 6 is located is subframe n and subframe n+1. The subframe set includes the subframe n and the subframe n+1; the STTI set shown in FIG. 5 includes the STTI 1 to the STTI 8, and the subframe where the STTI 1 to the STTI 8 is located is the subframe n and the subframe n+1. Then the subframe set includes subframe n and subframe n+1. Since the SRS is transmitted in a preset symbol in one subframe, the subframe set is defined to be composed of the subframes of the STTI in the STTI set, and the subframe in which any STTI in the STTI set is located can be used. The SRS is sent to make the scheduling of the SRS more flexible.

If the subframe set is composed of a subframe in which the STTI of the STTI set includes the preset symbol, It is assumed that the last symbol of the subframe is a preset symbol. In the STTI set TTI 1 to STTI 6 shown in FIG. 4, only the STTI 3 includes a preset symbol, and the subframe set includes the subframe n where the STTI 3 is located; In the STTI set STTI 1 to STTI 8 shown in FIG. 5, the STTI 4 and the STTI 8 each include a preset symbol, and the subframe set includes the subframe n where the STTI 4 is located and the subframe n+1 where the STTI 8 is located. If the preset symbol of the subframe in which the last STTI is located in the STTI set is separated from the last STTI by at least one symbol, since the SRS is sent by a preset symbol in one subframe, if the last STTI is located After the subframe is determined as the first subframe, the terminal device releases the channel of the unlicensed spectrum for a period of time after the STTI in the STTI set sends the uplink information. The idle channel evaluation needs to be performed before the terminal device sends the SRS. If the air channel evaluation of the terminal device fails before the SRS is sent, the SRS transmission fails. In the embodiment of the present invention, by defining the subframe set as the subframe in which the STTI of the STTI set includes the preset symbol, the subframe in which the at least one STTI is located may be excluded from the subframe set, that is, The SRS will not be able to send the preset symbol of the subframe in which the at least one STTI is located. Therefore, the SRS transmission failure caused by the failure of the idle channel evaluation before the SRS is sent by the terminal can be avoided, thereby improving the transmission efficiency of the SRS. For example, as shown in FIG. 4, the STTI in the STTI set is six temporally adjacent STTIs, and the six STTIs do not include preset symbols of the subframe n+1 in which the STTI4, STTI5, and STTI6 are co-located. If the subframe set is composed of the subframe in which the STTI of the STTI set includes the preset symbol, that is, the subframe set includes the subframe n, the control information only indicates that the terminal device sends the SRS in the preset symbol of the subframe n, and does not The terminal device is instructed to transmit the SRS in the preset symbol of the subframe n+1.

In some embodiments, the first indication information may directly indicate the relative position of the first subframe in the set of subframes. The first indication information may be an X bit (bit).

Where Y is the maximum value of the number of subframes included in the subframe set corresponding to the STTI in the STTI set for transmitting the uplink information indicated by the control information. among them

Indicates rounding up.

For example, Y=3, the first indication information is 2 bits. That is, the number and the number of STTIs in the various STTI sets indicated by the control information are not more than three. In the above example, if the subframe set is composed of a subframe in which the STTI of the STTI set includes the preset symbol, the subframe set includes the subframe n for the STTI set shown in FIG. 4, and the STTI shown in FIG. The set, the above subframe set includes a subframe n and a subframe n+1. However, if the control information sent by the access network device uses the same control information format for both FIG. 4 and FIG. 5, the first indication information included therein is used to indicate that the first subframe used for transmitting the SRS is in the sub-frame. The indication information of the relative position in the frame set is 2 bits. First indication information The correspondence relationship with the relative positions of the first subframe in the subframe set is as shown in Table 1 below. For example, if there are 4 subframes in the subframe set, the first indication information can be represented by 2 bits, as shown in Table 1 below.

Table 1

第一指示信息First indication	第一子帧在子帧集合中的相对位置Relative position of the first subframe in the set of subframes
0000	第一子帧为子帧集合中的第一个子帧The first subframe is the first subframe in the subframe set
0101	第一子帧为子帧集合中的第二个子帧The first subframe is the second subframe in the subframe set
1010	第一子帧为子帧集合中的第三个子帧The first subframe is the third subframe in the subframe set
1111	第一子帧为子帧集合中的第四个子帧The first subframe is the fourth subframe in the subframe set

It should be noted that if the relative position of the first subframe indicated by the first indication information does not exist in the subframe set determined according to the STTI in the STTI set, the terminal device may determine that the control information is invalid. For example, the subframe set determined by the terminal device according to the STTI set includes only one subframe, and the first indication information indicates that the first subframe is the second, third, or fourth subframe in the subframe set, and the terminal device It can be determined that the control information is invalid.

It should be noted that, in the embodiment of the present invention, the first indication information may respectively indicate whether the terminal device sends the SRS and the relative position of the first subframe in the subframe set by using different bit information.

For example, it is possible to indicate whether or not to transmit the SRS by 1 bit, for example, "0" indicates that the SRS is not transmitted, and "1" indicates that the SRS is transmitted. The relative position of the first subframe in the subframe set can be represented by 2 bits, as shown in Table 1.

It should be understood that the content indicated by the first indication information may also be jointly represented by multiple bit information, for example, “000” may be used to indicate that the SRS is not requested to be sent, “001” indicates that the SRS is requested to be sent, and the first subframe is in the subframe set. The first subframe, "010" indicates that the SRS is requested to be sent, and the first subframe is the second subframe in the subframe set, and so on, and details are not described herein.

The first indication information may also indirectly indicate the relative position of the first subframe in the subframe set. Optionally, the first indication information includes information used to indicate a set of SRS parameters adopted by the terminal device. The SRS parameter set may include subframe position information for transmitting the SRS, and the subframe position information in the SRS parameter set satisfies the correspondence relationship with the relative position of the first subframe in the subframe set. The correspondence may be pre-agreed by the access network device and the terminal device, or pre-configured by high layer signaling.

In this way, the terminal device may determine that the SRS parameter set indicated by the first indication information is to be adopted. Which SRS parameter set (as shown in Table 2 below). The relative position of the first subframe in the subframe set may be determined according to the subframe position information in the adopted SRS parameter set (as shown in Table 3 below), and the first position may be determined according to the relative position and the subframe set. Subframe. It should also be understood that the terminal device may transmit the SRS in the first subframe according to other parameters in the SRS parameter set.

In some embodiments, other configuration parameters for transmitting the SRS, such as a cyclic shift (CS), a frequency resource, and the like, may also be included in the SRS parameter set.

The subframe position information in the SRS parameter set satisfies the correspondence relationship with the relative position of the first subframe in the subframe set, and includes: the subframe position information in the SRS parameter set and the relative position of the first subframe in the subframe set. Correspondence (as shown in Table 3 below).

It should be noted that in the examples of Tables 2 and 3, if there are 4 subframes in the subframe set, the first indication information may be represented by 2 bits. Four SRS parameter sets may be pre-configured for the terminal device, namely, SRS parameter set 1, SRS parameter set 2, SRS parameter set 3, and SRS parameter set 4, and the subframe position information in the four SRS parameter sets is assumed to be taken. The values are A, B, C, and D, respectively. Optionally, the values of A, B, C, and D may be 0 or a positive integer.

Table 2

第一指示信息First indication	SRS参数集合标识SRS parameter set identifier
0000	SRS参数集合1SRS parameter set 1
0101	SRS参数集合2SRS parameter set 2
1010	SRS参数集合3SRS parameter set 3
1111	SRS参数集合4 SRS parameter set 4

table 3

子帧位置信息的取值Subframe position information	第一子帧在子帧集合中的相对位置Relative position of the first subframe in the set of subframes
AA	第一子帧为子帧集合中的第一个子帧The first subframe is the first subframe in the subframe set
BB	第一子帧为子帧集合中的第三个子帧The first subframe is the third subframe in the subframe set
CC	第一子帧为子帧集合中的第一个子帧The first subframe is the first subframe in the subframe set
DD	第一子帧为子帧集合中的第四个子帧The first subframe is the fourth subframe in the subframe set

A corresponding relationship between the subframe position information in the SRS parameter set and the relative position of the first subframe in the subframe set is shown in Table 3. It should be understood that the embodiment of the present invention is not limited to the correspondence shown in Table 3. The relationship may also be a correspondence shown in Table 4 below, or other correspondences. It should also be understood that Table 3 and Table 4 are only examples of the correspondence between the subframe position information in the SRS parameter set and the relative position of the first subframe in the subframe set, and should not constitute any limitation on the corresponding relationship in the embodiment of the present invention.

Optionally, the relative position of the subframe position information in the SRS parameter set and the first subframe in the subframe set satisfies the following relationship:

k=mod(l,Q)

Where k is the position number of the first subframe in the subframe set, l is the value of the subframe position information in the SRS parameter set, and Q is the number of subframes included in the subframe set. Mod represents the remainder operation. As shown in FIG. 4, if the subframe set is composed of a subframe in which the STTI of the STTI set includes the preset symbol, the subframe set includes only the subframe n, that is, Q=1. It is assumed that the access network device indicates to the terminal device by using the first indication information that the adopted SRS parameter set is the SRS parameter set 2. The subframe position information in the SRS parameter set 2 is l=2, then k=0. Therefore, the first subframe is determined to be a subframe with a position number of 0 in the subframe set, that is, the first subframe. For example, as shown in FIG. 5, if the subframe set is composed of a subframe in which the STTI of the STTI set includes the preset symbol, the subframe set includes the subframe n and the subframe n+1, that is, Q=2. It is assumed that the access network device indicates to the terminal device by using the first indication information that the adopted SRS parameter set is the SRS parameter set 3. The subframe position information in the SRS parameter set 2 is l=3, then k=1. Therefore, the first subframe is determined to be a subframe with a position number of 1, that is, a second subframe in the subframe set.

Table 4

子帧位置信息的取值Subframe position information	第一子帧在子帧集合中的相对位置Relative position of the first subframe in the set of subframes
AA	第一子帧为子帧集合中的第mod(A,Q)子帧The first subframe is the mod (A, Q) subframe in the subframe set
BB	第一子帧为子帧集合中的第mod(B,Q)子帧The first subframe is the mod (B, Q) subframe in the subframe set
CC	第一子帧为子帧集合中的第mod(C,Q)子帧The first subframe is the mod (C, Q) subframe in the subframe set
DD	第一子帧为子帧集合中的第mod(D,Q)子帧The first subframe is the mod (D, Q) subframe in the subframe set

The position number of each subframe in the subframe set may start from 0 or start from 1 and is not limited in this embodiment of the present invention. Accordingly, the value of l can be 0 or any positive integer.

Optionally, at least one STTI in the STTI set does not include a preset symbol.

Optionally, in this embodiment, the STTI in the STTI set does not include a preset symbol of a subframe in which at least one STTI in the STTI set is located. For example, as shown in FIG. 4, the STTI set includes STTI1 to STTI 6, the subframe where STTI 4, STTI 5, and STTI 6 are located is subframe n+1, and STTI 1 to STTI 6 do not include the preset symbol of subframe n+1. .

Optionally, the STTI in the STTI set is separated from the preset symbol of the first subframe by at least one symbol. In some embodiments, the STTI in the STTI set is advanced by at least one symbol of the preset symbol of the first subframe, as shown in Figures 6A, 6B, and 6C. Optionally, the terminal device performs the idle channel evaluation by using the first evaluation type before the preset symbol of the first subframe, and sends the SRS if it is determined that the evaluation result is that the channel is idle.

In the embodiment of the present invention, the access network device indicates, by using the control information, the STTI set of the uplink information and the relative position of the subframe for transmitting the SRS in the subframe set, so that the terminal device can determine the sub-set according to the STTI set. A frame set, and determining a subframe for transmitting the SRS according to the subframe set and the relative position, so that scheduling of the SRS is more flexible.

Another embodiment of the present invention further proposes another uplink transmission method 400. The method 400 includes the following contents:

The access network device sends the control information to the terminal device, where the control information includes the first indication information and the second indication information, where the first indication information is used to indicate that the terminal device sends the SRS, and the second indication information is used to indicate that the terminal device is in the STTI set. The STTI in the middle sends uplink information;

420. The terminal device sends an SRS in the first subframe according to the first indication information, and sends the uplink information in the STTI in the STTI set according to the second indication information. The first subframe satisfies the correspondence with the STTI in the STTI set, or the first subframe satisfies the correspondence with the second subframe used for transmitting the control information.

The access network device may receive the SRS sent by the terminal device in the first subframe, and receive the uplink information sent by the terminal device in the STTI in the STTI set.

Reference may be made to the related description of the control information and the uplink information in the method 100, and details are not described herein again.

It should be noted that, if the STTI in the STTI set is the STTI on the unlicensed spectrum, the terminal device needs to ensure that the location for sending the STTI in the STTI set is allowed to be occupied before the STTI in the STTI set sends the uplink information. Licensed spectrum to send information. For details, refer to the related description in the method 100, and details are not described herein again.

Before the SRS is sent by the first subframe, the terminal device may further determine the first subframe according to the corresponding relationship between the STTI set and the STTI in the STTI set, or according to the second subframe and the first subframe. The correspondence of the second subframe of the transmission control information determines the first subframe.

The access network device may determine the first subframe according to the correspondence between the STTI set and the STTI in the first subframe and the STTI set, or determine the first according to the correspondence between the second subframe and the first subframe and the second subframe. Subframe.

The second subframe used for transmitting control information refers to a subframe in which the access network device transmits the control information. A subframe in which a channel transmitted on a part of resources in one subframe is located is the subframe. The channel on which the access network device sends the control information may be a control channel corresponding to the scheduling in the form of STTI, or may be a control channel corresponding to the scheduling in the form of a subframe. When the access network device sends control information in the STTI format, the second subframe is a subframe in which the STTI for transmitting control information is located.

The correspondence between the first subframe and the STTI in the STTI set may be obtained by the access network device and the terminal device, or may be obtained by the terminal device from the control information sent by the access network device. The correspondence between the first subframe and the second subframe may be obtained by the terminal device from the control information sent by the access network device.

Therefore, in the embodiment of the present invention, the terminal device may determine the location of the first subframe in which the SRS is transmitted according to the STTI set for transmitting the uplink information and the corresponding relationship between the first subframe and the STTI in the STTI set, or the terminal device may The second subframe for transmitting the control information and the corresponding relationship between the first subframe and the second subframe determine the subframe position of the SRS, so that the scheduling of the SRS is more flexible.

The method according to an embodiment of the present invention is described below by taking three implementations as an example.

First implementation

The correspondence between the first subframe and the STTI in the STTI set is that the access network device and the terminal device reserve a good, and the terminal device can respond to the STTI set for transmitting the uplink information and the STTI in the STTI set according to the STTI set for transmitting the uplink information. The relationship determines the location of the first subframe in which the SRS is transmitted.

The correspondence between the first subframe and the STTI in the STTI set may include: if the STTI in the STTI, the first subframe is a subframe in which the STTI in the STTI set is located, as shown in FIGS. 6A, 6B, and 6C. If the STTI in the STTI set is located in multiple different subframes, the first subframe is a subframe in which the preset STTI in the STTI set is located. The preset STTI may be an STTI of a specific location in the STTI set, such as the first or last STTI. Preferably, the preset STTI is the last STTI in the STTI set.

Optionally, when the STTI set includes multiple STTIs, the multiple STTIs are temporally adjacent STTIs, and the multiple STTIs are separated from the preset symbols of the first subframe by at least one symbol. In some embodiments, the plurality of STTIs are advanced by at least one symbol longer than the preset symbols of the first subframe, This is shown in Figures 6A, 6B and 6C. Optionally, the terminal device performs the idle channel evaluation by using the first evaluation type before the preset symbol of the first subframe, and sends the SRS if it is determined that the evaluation result is that the channel is idle.

With the first implementation, if the terminal device determines that the channel is idle through the idle channel evaluation and sends the multiple STTIs, the time of the subframe in which the last STTI of the multiple STTIs is located may be considered to be unlicensed at the terminal device. The spectrum is sent within the MCOT of the message. If the plurality of STTIs are separated from the preset symbols of the first subframe by at least one symbol, even if the terminal device needs to release the channel of the unlicensed spectrum for a period of time after transmitting the last STTI of the multiple STTIs, the terminal device can still The idle channel evaluation is performed by the first evaluation type before the preset symbol of the first subframe, and the SRS is transmitted if it is determined that the evaluation result is that the channel is idle. Or the terminal device releases the channel of the unlicensed spectrum after transmitting the last STTI of the multiple STTIs for a period of time, and performs the idle channel evaluation without directly transmitting the SRS before the preset symbols of the first subframe. This can improve the transmission efficiency of the SRS.

Second implementation

The correspondence between the first subframe and the STTI in the STTI set is obtained by the terminal device from the control information sent by the access network device. The terminal device determines, according to the STTI in the STTI set and the correspondence between the first subframe and the STTI in the STTI set, the first subframe in which the SRS is transmitted.

Specifically, the first indication information is further used to indicate a position offset of the first subframe relative to the subframe in which the preset STTI in the STTI set is located. Correspondingly, the first subframe satisfies the corresponding relationship with the STTI in the STTI set, and includes: the position offset between the first subframe and the subframe in which the preset STTI in the STTI set is located. The terminal device may determine the first subframe according to the preset STTI in the STTI set and the position offset. The preset STTI may be an STTI of a specific location in the STTI set, such as the first or last STTI. Preferably, the preset STTI is the first STTI in the STTI set.

For example, if the location offset is q, the preset STTI is the first STTI in the STTI set, and the subframe where the first STTI is located in the STTI set is offset by q subframes to obtain the location of the first subframe. Is n+w, as shown in Figure 7. The terminal device may determine the subframe n+w according to the first STTI in the STTI set, and determine the position of the first subframe as n+w+q according to the position offset q.

It should be noted that the control information may further include third indication information, where the third indication information is used to indicate a location of the STTI in the STTI set. For example, the third indication information is used to indicate a position offset of the first STTI in the STTI set relative to the second subframe, or the third indication information is used to indicate The position offset of the subframe in which the first STTI in the STTI set is located relative to the second subframe. The second subframe is a subframe for transmitting control information. Since the terminal device can determine the location of the second subframe according to the receiving position of the control information (subframe n in FIG. 7), the terminal device determines the STTI set according to the location offset indicated by the third indication information in the control information. Presetting the subframe position where the STTI is located (subframe n+w in FIG. 7), and the position offset of the first subframe indicated by the first indication information relative to the subframe in which the preset STTI is located in the STTI set (q in Fig. 7) determines the position of the first subframe (n+w+q in Fig. 7).

In the embodiment of the present invention, the first indication information in the embodiment of the present invention may respectively indicate that the terminal device sends the SRS and the subframe of the first subframe relative to the preset STTI in the STTI set by using different bit information. Position offset. For example, it is possible to indicate whether or not to transmit the SRS by 1 bit, for example, "0" indicates that the SRS is not transmitted, and "1" indicates that the SRS is transmitted. The position offset of the first subframe relative to the subframe in which the preset STTI is located in the STTI set may be represented by 2 bits, for example, “00”, “01”, etc. respectively represent the first subframe relative to the STTI. The position offset of the subframe in which the preset STTI is located in the set.

It should be understood that the content indicated by the first indication information may also be jointly represented by multiple bit information, such as shown in Table 5 below, where q represents the position offset of the first subframe relative to the subframe in which the preset STTI in the STTI set is located. For the quantity, you can use "000" to indicate that the SRS is not requested to be sent, "001" to request to send the SRS and q = 1, "010" to request to send the SRS and q = 2, and so on, and details are not described herein.

table 5

第一指示信息First indication	表示的含义Meaning of representation
'000''000'	不请求发送SRSDo not request to send SRS
'001''001'	请求发送SRS，q＝1Request to send SRS, q=1
'010''010'	请求发送SRS，q＝2Request to send SRS, q=2
'011''011'	请求发送SRS，q＝3Request to send SRS, q=3
'100''100'	请求发送SRS，q＝4Request to send SRS, q=4
'101''101'	请求发送SRS，q＝5Request to send SRS, q=5
'110''110'	请求发送SRS，q＝6Request to send SRS, q=6
'111''111'	请求发送SRS，q＝7Request to send SRS, q=7

In some embodiments, the control information sent by the access network device may indicate that the terminal device is at least One subframe transmits uplink information, and indicates a position offset of a subframe used by the terminal device to transmit the SRS with respect to a preset subframe in the at least one subframe. The terminal device may determine a subframe for transmitting the SRS according to the location offset and the location of the preset subframe. The preset subframe in the at least one subframe is a fixed-position subframe in the at least one subframe, for example, the first subframe or the last subframe, and the like, and details are not described herein again.

In the second implementation manner, the STTI set for transmitting the uplink information and the position offset of the first subframe for transmitting the SRS with respect to the subframe where the preset STTI is located in the STTI set are indicated to the terminal device by using the control information. Can make the scheduling of SRS more flexible.

The third way to achieve

The correspondence between the first subframe and the second subframe for transmitting control information is obtained by the terminal device from the control information sent by the access network device. The terminal device may determine, according to the second subframe and the correspondence between the first subframe and the second subframe, the location of the first subframe in which the SRS is transmitted.

Specifically, the first indication information is further used to indicate a position offset of the first subframe relative to the second subframe. Correspondingly, the first subframe satisfies a correspondence relationship with the second subframe for transmitting control information, and includes: an offset position of the interval between the first subframe and the second subframe. The terminal device may determine the first subframe according to the second subframe and the position offset. For example, the first indication information may directly indicate the amount of positional offset between the position of the first subframe and the location of the second subframe. For example, if the offset is k, the position n+k of the first subframe is obtained by shifting k subframes at the position n of the second subframe, as shown in FIG. 8.

It should be noted that, in some embodiments, the control information may further include third indication information, where the third indication information is used to indicate a location of the STTI in the STTI set. For example, the third indication information is used to indicate a position offset of the first STTI in the STTI set relative to the second subframe, or the third indication information is used to indicate that the subframe in which the first STTI in the STTI set is located is relative to The position offset of the second subframe. The second subframe is a subframe for transmitting the control information. The terminal device may determine the location of the second subframe according to the receiving position of the control information, and determine the first subframe according to the position offset of the first subframe to indicate the first subframe relative to the second subframe. position.

In the embodiment of the present invention, the first indication information in the embodiment of the present invention may respectively indicate that the terminal device sends the SRS and the position offset between the first subframe and the second subframe by using different bit information. For example, it is possible to indicate whether or not to transmit the SRS by 1 bit, for example, "0" indicates that the SRS is not transmitted, and "1" indicates that the SRS is transmitted. The position offset between the first subframe and the second subframe may be represented by 2 bits, for example, “00”, “01”, etc. respectively represent different position offsets between the first subframe and the second subframe. the amount.

It should be understood that the content indicated by the first indication information may also be jointly represented by a plurality of bit information, for example, as shown in Table 6 below, where k indicates that the position offset of the first subframe relative to the second subframe is “000”. ” indicates that the SRS is not requested to be sent, “001” indicates that the SRS is requested to be sent and k=1, “010” indicates that the SRS is requested to be sent, and k=2, and so on, and details are not described herein.

Table 6

第一指示信息First indication	表示的含义Meaning of representation
'000''000'	不请求发送SRSDo not request to send SRS
'001''001'	请求发送SRS，k＝1Request to send SRS, k=1
'010''010'	请求发送SRS，k＝2Request to send SRS, k=2
'011''011'	请求发送SRS，k＝3Request to send SRS, k=3
'100''100'	请求发送SRS，k＝4Request to send SRS, k=4
'101''101'	请求发送SRS，k＝5Request to send SRS, k=5
'110''110'	请求发送SRS，k＝6Request to send SRS, k=6
'111''111'	请求发送SRS，k＝7Request to send SRS, k=7

With the third implementation manner, the scheduling information indicating the first subframe for transmitting the SRS with respect to the second subframe for transmitting the control information is indicated to the terminal device by the control information, so that the scheduling of the SRS can be made more flexible.

The uplink transmission method according to an embodiment of the present invention is described above with reference to FIGS. 1 through 8, and a terminal device and an access network device according to an embodiment of the present invention will be described below with reference to FIGS. 9 through 12.

FIG. 9 is a schematic structural diagram of a terminal device 900 according to an embodiment of the present invention. As shown in FIG. 9, the terminal device 900 may include a receiving unit 910 and a transmitting unit 920. The terminal device 900 can be used to implement the functions of the terminal device in the uplink transmission method according to the embodiment of the present invention, as described in the following Embodiment 1 and Embodiment 2.

Embodiment 1

The receiving unit 910 is configured to receive the control information that is sent by the access network device, where the control information includes the first indication information and the second indication information, where the first indication information is used to instruct the terminal device to send the sounding reference signal SRS and the first one for transmitting the SRS. The relative position of the subframe in the subframe set, the second indication information is used to indicate that the terminal device sends the uplink information in the STTI in the STTI set, and the subframe set includes the subframe in which the at least one STTI in the STTI set is located.

The sending unit 920 is configured to send the SRS in the first subframe according to the first indication information received by the receiving unit 910, and send the uplink information in the STTI in the STTI set according to the second indication information received by the receiving unit 910.

Optionally, the subframe set is composed of a subframe in which the STTI in the STTI set is located, or the subframe set is composed of a subframe in which the STTI of the STTI set includes the preset symbol, where the preset symbol is defined for transmission. The symbol of the SRS.

Optionally, at least one STTI in the STTI set does not include a preset symbol.

Optionally, the STTI in the STTI set does not include a preset symbol of a subframe in which at least one STTI in the STTI set is located.

Optionally, the first indication information includes information used to indicate a set of SRS parameters adopted by the terminal device, where the relative position satisfies a correspondence relationship with the subframe position information in the SRS parameter set.

Optionally, the relative position and the subframe position information in the SRS parameter set satisfy the following relationship:

k=mod(l,Q)

Optionally, the length of time of one subframe is equal to the sum of time lengths of at least two STTIs.

It should be noted that the receiving unit 910 can be used to be implemented by a receiver, and the transmitting unit 920 can be implemented by a transmitter.

It should be understood that the terminal device 900 according to an embodiment of the present invention may correspond to a terminal device in the uplink transmission method 100 according to an embodiment of the present invention, and the above and other operations and/or functions of respective units in the terminal device 900 are respectively implemented for The corresponding process of the method 100 shown in FIG. 1 is not repeated here for brevity.

Embodiment 2

The receiving unit 910 is configured to receive the control information that is sent by the access network device, where the control information includes the first indication information and the second indication information, where the first indication information is used to instruct the terminal device to send the sounding reference signal SRS, and the second indication information is used to indicate The terminal device sends uplink information in at least one short transmission time interval STTI;

The sending unit 920 is configured to send, according to the first indication information, the SRS according to the first indication information received by the receiving unit 910, and according to the second indication information received by the receiving unit 910, in the STTI set. STTI sends uplink information,

The first subframe satisfies the correspondence with the STTI in the STTI set, or the first subframe satisfies the correspondence with the second subframe used for transmitting the control information.

Optionally, the first subframe satisfies the correspondence with the STTI in the STTI set, and includes:

The first subframe is the subframe in which the last STTI in the STTI set is located.

Optionally, the first indication information is further used to indicate a position offset of the first subframe relative to the subframe where the preset STTI in the STTI set is located. Correspondingly, the first subframe satisfies the correspondence with the STTI in the STTI set, including:

The positional offset between the first subframe and the subframe in which the preset STTI is located in the STTI set.

Optionally, when the STTI set includes multiple STTIs, the multiple STTIs are temporally adjacent STTIs, and the multiple STTIs are advanced by at least one symbol longer than the preset symbols of the first subframe, where the preset symbols are used. The symbol for transmitting SRS.

Optionally, the first indication information is further used to indicate a position offset of the first subframe relative to the second subframe. Correspondingly, the first subframe satisfies the correspondence with the second subframe used for transmitting control information, including:

The amount of positional offset between the first subframe and the second subframe.

It should be understood that the terminal device 900 according to an embodiment of the present invention may correspond to a terminal device in the uplink transmission method 400 according to an embodiment of the present invention, and the above and other operations and/or functions of respective units in the terminal device 900 are respectively implemented for The corresponding flow of the method 400 will not be repeated here for brevity.

FIG. 10 is a schematic structural diagram of a terminal device 1000 according to another embodiment of the present invention. As shown in FIG. 10, the terminal device 1000 includes a processor 1010, a receiver 1020, a transmitter 1030, a memory 1040, and a bus system 1050. The various components in terminal device 1000 are coupled together by a bus system 1050.

The memory 1040 can be used to store code and the like executed by the processor 910. Receiver 1020 is operative to receive signals under the control of processor 1010. Transmitter 1030 is operative to transmit signals under the control of processor 1010.

Specifically, the receiver 1020 is configured to implement the function of the receiving unit 910 in the terminal device 900 shown in FIG. 9, and the transmitter 1030 is configured to implement the function of the transmitting unit 920 in the terminal device 900 shown in FIG. For the sake of brevity, we will not repeat them here.

FIG. 11 is a schematic structural diagram of an access network device 1100 according to an embodiment of the present invention. As shown in FIG. 11, the access network device 1100 may include a transmitting unit 1110 and a receiving unit 1120. The access network device 1100 can be used to implement the functions of the access network device in the uplink transmission method according to the embodiment of the present invention, as described in the following Embodiment 3 and Embodiment 4.

Embodiment 3

The sending unit 1110 is configured to send control information to the terminal device, where the control information includes first indication information and second indication information, where the first indication information is used to indicate that the terminal device sends the sounding reference signal SRS and the first subframe used for transmitting the SRS is The relative position in the subframe set, the second indication information is used to indicate that the terminal device sends the uplink information in the STTI in the STTI set, and the subframe set includes the subframe in which the at least one STTI in the STTI set is located.

The receiving unit 1120 is configured to receive the SRS sent by the terminal device in the first subframe according to the first indication information sent by the sending unit 11100, and receive the uplink sent by the terminal device in the STTI in the STTI set according to the second indication information sent by the sending unit 11100. information.

Optionally, at least one STTI in the STTI set does not include a preset symbol.

k=mod(l,Q)

It should be understood that the access network device 1100 according to an embodiment of the present invention may correspond to the access network device in the uplink transmission method 100 according to an embodiment of the present invention, and the above and other operations of the respective units in the access network device 1100 and / or function respectively to achieve the corresponding process of method 400, for the sake of simplicity Clean, no longer repeat here.

Embodiment 4

The sending unit 1110 is configured to send the control information to the terminal device, where the control information includes the first indication information and the second indication information, where the first indication information is used to indicate that the terminal device sends the sounding reference signal SRS, and the second indication information is used to indicate that the terminal device is The STTI in the STTI set sends uplink information;

The receiving unit 1120 is configured to receive the SRS sent by the terminal device in the first subframe according to the first indication information sent by the sending unit 1110, and receive the uplink sent by the terminal device in the STTI in the STTI set according to the second indication information sent by the sending unit 1110. information.

Optionally, when the STTI set includes multiple STTIs, the multiple STTIs are temporally adjacent STTIs, and the multiple STTIs are separated from the preset symbols of the first subframe by at least one symbol, where the preset symbols are used for The symbol of the SRS is transmitted.

It should be understood that the access network device 1100 according to an embodiment of the present invention may correspond to the access network device in the uplink transmission method 400 according to an embodiment of the present invention, and the above and other operations of the respective units in the access network device 1100 and The functions of the method 400 are respectively implemented in order to implement the corresponding processes of the method 400, and are not described herein for brevity.

It should be noted that the transmitting unit 1110 in the access network device 1100 shown in FIG. 11 can be implemented by a transmitter, and the receiving unit 1120 can be implemented by a receiver.

FIG. 12 is a schematic structural diagram of an access network device 1200 according to another embodiment of the present invention. As shown As shown at 12, the access network device 1200 includes a processor 1210, a transmitter 1220, a receiver 1230, a memory 1240, and a bus system 1250. The various components in terminal device 1200 are coupled together by a bus system 1250.

The memory 1240 can be used to store code and the like executed by the processor 1210. Transmitter 1220 is operative to transmit signals under the control of processor 1212. Receiver 1230 is for receiving signals under the control of processor 1210.

Specifically, the transmitter 1220 is configured to implement the function of the sending unit 1110 in the access network device 1100 shown in FIG. 11, and the receiver 1230 is configured to implement the function of the receiving unit 1120 in the access network device 1100 shown in FIG. . For the sake of brevity, we will not repeat them here.

It should be noted that the bus system in the above embodiments may include a power bus, a control bus, and a status signal bus in addition to the data bus. For ease of representation, various buses are labeled as a bus system in the figure.

The memory in each of the above embodiments may include a volatile memory, such as a random-access memory (RAM); the memory may also include a non-volatile memory, such as a fast A flash memory, a hard disk drive (HDD), or a solid-state drive (SSD); the memory may further include a combination of the above types of memories.

The processor in each of the above embodiments may be a central processing unit (CPU), a network processor (NP), or a combination of a CPU and an NP. Processor 710 can also further include a hardware chip. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, for clarity of hardware and software. Interchangeability, the composition and steps of the various examples have been generally described in terms of function in the above description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. Professionals can use different methods to implement the described functions for each specific application, but this implementation should not be considered super The scope of the invention is intended.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of cells is only a logical function division. In actual implementation, there may be another division manner. For example, multiple units or components may be combined or integrated. Go to another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, or an electrical, mechanical or other form of connection.

The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiments of the present invention.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented in hardware, firmware implementation, or a combination thereof. When implemented in software, the functions described above may be stored in or transmitted as one or more instructions or code on a computer readable medium. Computer readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one location to another. A storage medium may be any available media that can be accessed by a computer. By way of example and not limitation, computer readable media may comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage media or other magnetic storage device, or can be used for carrying or storing in the form of an instruction or data structure. The desired program code and any other medium that can be accessed by the computer. Also. Any connection may suitably be a computer readable medium. For example, if the software uses coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technologies such as infrared, radio and microwave, from the website, Coaxial cables, fiber optic cables, twisted pair, DSL, or wireless technologies such as infrared, wireless, and microwaves are included in the fixing of the associated media, as transmitted by a server or other remote source. As used in the present invention, a disk and a disc include a compact disc (CD), a laser disc, a compact disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc, wherein the disc is usually magnetically copied, and the disc is The laser is used to optically replicate the data. Combinations of the above should also be included within the scope of the computer readable media.

In conclusion, the above is only a preferred embodiment of the technical solution of the present invention, and is not intended to limit the scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

An uplink transmission method, comprising:

The terminal device receives the control information sent by the access network device, where the control information includes the first indication information and the second indication information, where the first indication information is used to indicate that the terminal device sends the sounding reference signal SRS and is used for transmitting the SRS. a relative position of the first subframe in the set of subframes, where the second indication information is used to indicate that the terminal device sends uplink information in an STTI in a short transmission time interval STTI set, where the subframe set includes the STTI a subframe in which at least one STTI in the set is located;

The terminal device sends an SRS in the first subframe according to the first indication information, and sends uplink information in an STTI in the STTI set according to the second indication information.
The method of claim 1 wherein

The subframe set is composed of a subframe in which the STTI in the STTI set is located,

Or the subframe set is composed of a subframe in which the STTI of the STTI set includes a preset symbol, where the preset symbol is a defined symbol for transmitting the SRS.
The method according to claim 1 or 2, wherein the STTI in the STTI set does not include a preset symbol of a subframe in which at least one STTI in the STTI set is located.
The method according to any one of claims 1 to 3, characterized in that

The first indication information includes information indicating a set of SRS parameters adopted by the terminal device, where the relative position satisfies a correspondence relationship with subframe position information in the SRS parameter set.
The method according to claim 4, wherein the relative position and the subframe position information in the SRS parameter set satisfy the following relationship:

k=mod(l,Q)

Where k is the position number of the first subframe in the subframe set, l is the subframe position information in the SRS parameter set, and Q is the number of subframes included in the subframe set.
The method according to any one of claims 1 to 5, characterized in that the length of time of one subframe is equal to the sum of the lengths of time of at least two STTIs.
An uplink transmission method, comprising:

The terminal device receives the control information sent by the access network device, where the control information includes the first indication information and the second indication information, where the first indication information is used to instruct the terminal device to send the sounding reference signal SRS, the second The indication information is used to indicate that the terminal device is in a short transmission time interval The STTI in the STTI set sends uplink information;

The terminal device sends an SRS in the first subframe according to the first indication information, and sends uplink information in the STTI in the STTI set according to the second indication information, where

The first subframe satisfies a correspondence relationship with the STTI in the STTI set, or the first subframe satisfies a correspondence relationship with a second subframe used to transmit the control information.
The method according to claim 7, wherein the first subframe satisfies a correspondence with the STTI in the STTI set, and includes:

The first subframe is a subframe in which the last STTI in the STTI set is located.
The method according to claim 7, wherein the first indication information is further used to indicate a position offset of the first subframe relative to a subframe in which the preset STTI in the STTI set is located,

The first subframe satisfies the correspondence with the STTI in the STTI set, and includes:

The position offset is separated between the first subframe and a subframe in which the preset STTI in the STTI set is located.
The method according to any one of claims 7 to 9, wherein when the STTI set includes a plurality of STTIs, the plurality of STTIs are temporally adjacent STTIs, and the plurality of STTI ratios The preset symbol of the first subframe is advanced by a time length of at least one symbol, wherein the preset symbol is a symbol for transmitting an SRS.
The method according to claim 7, wherein the first indication information is further used to indicate a position offset of the first subframe relative to the second subframe,

The first subframe satisfies the correspondence with the second subframe used for transmitting the control information, and includes:

The position offset is separated between the first subframe and the second subframe.
An uplink transmission method, comprising:

The access network device sends control information to the terminal device, where the control information includes first indication information and second indication information, where the first indication information is used to instruct the terminal device to send the sounding reference signal SRS and the SRS for transmitting a relative position of the first subframe in the subframe set, where the second indication information is used to instruct the terminal device to send uplink information in an STTI in the short transmission time interval STTI set, where the subframe set includes the STTI set a subframe in which at least one STTI is located;

The access network device receives the SRS sent by the terminal device in the first subframe according to the first indication information, and receives the STTI in the STTI set according to the second indication information. The uplink information sent by the terminal device.
The method of claim 12 wherein:

The subframe set is composed of a subframe in which the STTI in the STTI set is located,

Or the subframe set is composed of a subframe in which the STTI of the STTI set includes a preset symbol, where the preset symbol is a defined symbol for transmitting the SRS.
The method according to claim 12 or 13, wherein the STTI in the STTI set does not include a preset symbol of a subframe in which at least one STTI in the STTI set is located.
A method according to any one of claims 12 to 14, wherein

The first indication information includes information indicating a set of SRS parameters adopted by the terminal device, where the relative position satisfies a correspondence relationship with subframe position information in the SRS parameter set.
The method according to claim 15, wherein the relative position and the subframe position information in the SRS parameter set satisfy the following relationship:

k=mod(l,Q)

Where k is the position number of the first subframe in the subframe set, l is the subframe position information in the SRS parameter set, and Q is the number of subframes included in the subframe set.
The method according to any one of claims 12 to 16, wherein the length of time of one subframe is equal to the sum of time lengths of at least two STTIs.
An uplink transmission method, comprising:

The access network device sends control information to the terminal device, where the control information includes first indication information and second indication information, where the first indication information is used to instruct the terminal device to send a sounding reference signal SRS, the second indication The information is used to instruct the terminal device to send uplink information in an STTI in a short transmission time interval STTI set;

Receiving, by the access network device, the SRS sent by the terminal device in the first subframe according to the first indication information, and receiving, by using the second indication information, the STTI sent by the terminal device in the STTI in the STTI set. Uplink information,

The first subframe satisfies a correspondence relationship with the STTI in the STTI set, or the first subframe satisfies a correspondence relationship with a second subframe used to transmit the control information.
The method according to claim 18, wherein the first subframe satisfies a correspondence with the STTI of the STTI set, and includes:

The first subframe is a subframe in which the last STTI in the STTI set is located.
The method according to claim 18, wherein said first indication information is further a position offset indicating a subframe in which the first subframe is located with respect to a preset STTI in the STTI set,

The first subframe satisfies the correspondence with the STTI in the STTI set, and includes:

The position offset is separated between the first subframe and a subframe in which the preset STTI in the STTI set is located.
The method according to any one of claims 18 to 20, wherein when the STTI set includes a plurality of STTIs, the plurality of STTIs are temporally adjacent STTIs, and the plurality of STTIs and The preset symbols of the first subframe are separated by at least one symbol, wherein the preset symbols are symbols for transmitting the SRS.
The method according to claim 18, wherein the first indication information is further used to indicate a position offset of the first subframe relative to the second subframe,

The first subframe satisfies the correspondence with the second subframe used for transmitting the control information, and includes:

The position offset is separated between the first subframe and the second subframe.
A terminal device, comprising:

a receiving unit, configured to receive control information sent by the access network device, where the control information includes first indication information and second indication information, where the first indication information is used to instruct the terminal device to send the sounding reference signal SRS and The second indication information is used to indicate that the terminal device sends the uplink information in the STTI in the short transmission time interval STTI, where the subframe set includes the location Decoding a subframe in which at least one STTI in the STTI set is located;

a sending unit, configured to send an SRS in the first subframe according to the first indication information received by the receiving unit, and in the STTI set according to the second indication information received by the receiving unit The STTI sends uplink information.
The terminal device according to claim 23, characterized in that

The subframe set is composed of a subframe in which the STTI in the STTI set is located,

Or the subframe set is composed of a subframe in which the STTI of the STTI set includes a preset symbol, where the preset symbol is a defined symbol for transmitting the SRS.
The terminal device according to claim 23 or 24, wherein the STTI in the STTI set does not include a preset symbol of a subframe in which at least one STTI in the STTI set is located.
A terminal device according to any one of claims 23 to 25, characterized in that

The first indication information includes information indicating a set of SRS parameters adopted by the terminal device, where the relative position satisfies a correspondence relationship with subframe position information in the SRS parameter set.
The terminal device according to claim 26, wherein the relative position and the subframe position information in the SRS parameter set satisfy the following relationship:

k=mod(l,Q)

Where k is the position number of the first subframe in the subframe set, l is the subframe position information in the SRS parameter set, and Q is the number of subframes included in the subframe set.
The terminal device according to any one of claims 23 to 27, characterized in that the length of time of one subframe is equal to the sum of time lengths of at least two STTIs.
A terminal device, comprising:

a receiving unit, configured to receive control information sent by the access network device, where the control information includes first indication information and second indication information, where the first indication information is used to instruct the terminal device to send a sounding reference signal SRS, where The second indication information is used to instruct the terminal device to send uplink information in an STTI in a short transmission time interval STTI set;

a sending unit, configured to send, according to the first indication information, an SRS according to the first indication information, according to the first indication information, and according to the second indication information that is received by the receiving unit, in the STTI set. STTI sends uplink information,

The first subframe satisfies a correspondence relationship with the STTI in the STTI set, or the first subframe satisfies a correspondence relationship with a second subframe used to transmit the control information.
The terminal device according to claim 29, wherein the first subframe satisfies a correspondence with the STTI in the STTI set, and includes:

The first subframe is a subframe in which the last STTI in the STTI set is located.
The terminal device according to claim 29, wherein the first indication information is further used to indicate a position offset of the first subframe relative to a subframe in which the preset STTI in the STTI set is located ,

The first subframe satisfies the correspondence with the STTI in the STTI set, and includes:

The position offset is separated between the first subframe and a subframe in which the preset STTI in the STTI set is located.
The terminal device according to any one of claims 29 to 31, wherein when the STTI set includes a plurality of STTIs, the plurality of STTIs are temporally adjacent STTIs. Determining, by the plurality of STTIs, a time length of at least one symbol earlier than a preset symbol of the first subframe, wherein the preset symbol is a symbol for transmitting an SRS.
The terminal device according to claim 29, wherein the first indication information is further used to indicate a position offset of the first subframe relative to the second subframe,

The first subframe satisfies the correspondence with the second subframe used for transmitting the control information, and includes:

The position offset is separated between the first subframe and the second subframe.
An access network device, comprising:

a sending unit, configured to send control information to the terminal device, where the control information includes first indication information and second indication information, where the first indication information is used to instruct the terminal device to send the sounding reference signal SRS and to transmit the SRS a relative position of the first subframe in the set of subframes, where the second indication information is used to indicate that the terminal device sends uplink information in an STTI in a short transmission time interval STTI set, where the subframe set includes the STTI a subframe in which at least one STTI in the set is located;

a receiving unit, configured to receive, according to the first indication information sent by the sending unit, the SRS sent by the terminal device in the first subframe, and according to the second indication information sent by the sending unit The STTI in the STTI set receives the uplink information sent by the terminal device.
The access network device of claim 34, wherein

The subframe set is composed of a subframe in which the STTI in the STTI set is located,

Or the subframe set is composed of a subframe in which the STTI of the STTI set includes a preset symbol, where the preset symbol is a defined symbol for transmitting the SRS.
The access network device according to claim 34 or 35, wherein the STTI in the STTI set does not include a preset symbol of a subframe in which at least one STTI in the STTI set is located.
An access network device according to any one of claims 34 to 36, characterized in that

The first indication information includes information indicating a set of SRS parameters adopted by the terminal device, where the relative position satisfies a correspondence relationship with subframe position information in the SRS parameter set.
The access network device according to claim 37, wherein the relative position and the subframe position information in the SRS parameter set satisfy the following relationship:

k=mod(l,Q)

Where k is the position number of the first subframe in the subframe set, and l is the SRS The subframe position information in the parameter set, and Q is the number of subframes included in the subframe set.
The access network device according to any one of claims 34 to 38, characterized in that the length of time of one subframe is equal to the sum of time lengths of at least two STTIs.
An access network device, comprising:

a sending unit, configured to send control information to the terminal device, where the control information includes first indication information and second indication information, where the first indication information is used to instruct the terminal device to send a sounding reference signal SRS, the second The indication information is used to instruct the terminal device to send uplink information in an STTI in a short transmission time interval STTI set;

a receiving unit, configured to receive, according to the first indication information sent by the sending unit, an SRS sent by the terminal device in a first subframe, and according to the second indication information sent by the sending unit, in the STTI The STTI in the set receives the uplink information sent by the terminal device,

The first subframe satisfies a correspondence relationship with the STTI in the STTI set, or the first subframe satisfies a correspondence relationship with a second subframe used to transmit the control information.
The access network device according to claim 40, wherein the first subframe satisfies a correspondence with the STTI in the STTI set, and includes:

The first subframe is a subframe in which the last STTI in the STTI set is located.
The access network device according to claim 40, wherein the first indication information is further used to indicate a positional deviation of the first subframe relative to a subframe in which the preset STTI in the STTI set is located Transfer amount,

The first subframe satisfies the correspondence with the STTI in the STTI set, and includes:

The position offset is separated between the first subframe and a subframe in which the preset STTI in the STTI set is located.
The access network device according to any one of claims 40 to 42, wherein when the STTI set includes a plurality of STTIs, the plurality of STTIs are temporally adjacent STTIs, and the plurality of The STTI is separated from the preset symbol of the first subframe by at least one symbol, where the preset symbol is a symbol for transmitting an SRS.
The access network device according to claim 40, wherein the first indication information is further used to indicate a position offset of the first subframe relative to the second subframe,

The first subframe satisfies the correspondence with the second subframe used for transmitting the control information, and includes:

The position offset is separated between the first subframe and the second subframe.