WO2012000449A1

WO2012000449A1 - Transmission method and device for uplink control information

Info

Publication number: WO2012000449A1
Application number: PCT/CN2011/076725
Authority: WO
Inventors: 林亚男; 沈祖康; 高雪娟; 潘学明
Original assignee: 电信科学技术研究院
Priority date: 2010-07-02
Filing date: 2011-06-30
Publication date: 2012-01-05
Also published as: CN102111886A; CN102111886B

Abstract

A transmission method and device for uplink control information are provided by the embodiments in present invention, with the technical solutions proposed by the embodiments in present invention, in the case that transmission of a large amount of uplink control information is required in uplink sub-frames transmitting Sounding Reference Signal (SRS), the amount of uplink control information is carried in one or more slots on one shortened uplink control channel, so that the user requirement that uplink control information with more bits is fed back on one uplink control channel is met on the basis that the existing Long Term Evolution (LTE) system specification is saved farthest, and specific configuration solution for transmitting SRS and uplink control information simultaneously is provided.

Description

Method and device for transmitting uplink control information The present application claims priority to Chinese Patent Application No. 201010224536.3, entitled "Transmission Method and Device for Uplink Control Information", filed on July 2, 2010, The entire contents are incorporated herein by reference. Technical field

The embodiments of the present invention relate to the field of communications technologies, and in particular, to a method and a device for transmitting uplink control information. Background technique

In the technical scenario of the existing LTE (Long Term Evolution) system, the SRS (Sounding Reference Signal) is sent periodically, and its related parameters (including the period, SRS bandwidth, etc.) are UEs. (User Equipment, user equipment) Dedicated, and semi-statically configured by the base station.

When there is no data transmission in the uplink control channel, the uplink control information includes ACK (ACKnowledge Character) / NAK (Negative Acknowledge), SR (Scheduling Request), CQI (Channel Quality Information) Information), PUCCH (Physical Uplink Control Channel) transmission will be used separately; when there is data transmission, the above uplink control information will be multiplexed with data, and PUSCH (Physical Uplink Shared Channel) will be used. )transmission.

The base station can use the parameter Simultaneous-AN-and-SRS to semi-statically configure whether the UE supports simultaneous transmission of SRS and uplink control information (ACK/NAK and/or SR).

If the content of the parameter Simultaneous-AN-and-SRS is False (the SRS and the uplink control information are not supported for simultaneous transmission), when the PUCCH and the SRS transmitting the ACK/NAK and/or SR need to be transmitted in the same subframe, the UE will Drop the SRS and only feed back ACK/NAK and/or SR.

If the content of the parameter Simultaneous-AN-and-SRS is True (support SRS and above) The UE can transmit the SRS and the PUCCH carrying the ACK/NAK and/or the SR in one subframe at the same time. The schematic diagram of the PUCCH at this time is shown in FIG. 1 .

In the subframe in which the SRS is transmitted, all UEs can only use the shortened PUCCH (shortened uplink control channel) format 1/la/lb to transmit ACK/NAK and/or SR in the subframe, regardless of whether the UE is configured in the subframe. The SRS is transmitted in the subframe, and the so-called shortened PUCCH does not transmit ACK/NAK and/or SR on the last SC-FDMA (Single Carrier Frequency Division Multiple Access) symbol in the subframe, and the UE will The SRS is transmitted on the symbol according to a predetermined configuration.

In the process of implementing the embodiments of the present invention, the inventors have found that the prior art has at least the following problems:

Currently, in the LTE-A (Long Term Evolution Advanced) system, the design requirements for the higher-end transmission mode and the need for the user to feed back more bits of uplink control information in one uplink subframe have not yet been met. A specific configuration scheme for simultaneously transmitting SRS and uplink control information is given. Summary of the invention

The embodiment of the invention provides a method and a device for transmitting uplink control information. For the case that a large-capacity uplink control information needs to be transmitted in an uplink subframe in which an SRS signal is transmitted, a corresponding uplink control channel resource configuration scheme is proposed.

To achieve the above objective, an embodiment of the present invention provides a method for transmitting uplink control information, which specifically includes the following steps:

The base station receives the truncated uplink control channel carrying the reference signal and the uplink control information, where the uplink control information is composed of one or more data symbols, and the data symbol is spread by a preset spreading sequence and the reference signal Mapping together to each SC-FDMA symbol on the truncated uplink control channel according to a preset resource mapping structure; And the base station acquires uplink control information corresponding to one or more terminal devices according to the content carried in each SC-FDMA symbol that transmits the uplink control information in the truncated uplink control channel. In another aspect, the embodiment of the present invention further provides a base station, including: a receiving module, configured to receive a truncated uplink control channel that carries a reference signal and uplink control information, where the uplink control information is one or more Data symbols are formed, and the data symbols are spread by a predetermined spreading sequence and then mapped to the SC-FDMA symbols on the truncated uplink control channel according to a preset resource mapping structure together with the reference signal;

And an obtaining module, configured to acquire uplink control information of one or more terminal devices according to content carried in each SC-FDMA symbol that transmits uplink control information in the uplink control channel received by the receiving module. On the other hand, an embodiment of the present invention further provides a method for transmitting uplink control information, which specifically includes the following steps:

The terminal device divides the uplink control information corresponding to the terminal device into one or more data ports.

The "test signal" is mapped together to each SC-FDMA symbol on the truncated uplink control channel according to a preset resource mapping structure;

The terminal device sends the truncated uplink control channel to the base station, so that the base station acquires the content carried in each SC-FDMA symbol that transmits uplink control information in the truncated uplink control channel. The uplink control information corresponding to the terminal device. On the other hand, the embodiment of the present invention further provides a receiving end device for backhaul link control channel information, which specifically includes:

a setting module, configured to set an information carrying policy and a resource mapping structure; a dividing module, configured to divide uplink control information corresponding to the terminal device into one or more data symbols;

And an allocating module, configured to map the uplink control signal that is spread by the preset spreading sequence with the reference signal to each SC-FDMA symbol on the truncated uplink control channel according to the resource mapping structure set by the setting module Medium

a sending module, configured to send, by the allocation module, a truncated uplink control channel that performs resource mapping to the base station, so that the base station performs, according to the SC-FDMA symbol, the uplink control information in the truncated uplink control channel The carried content acquires uplink control information corresponding to the terminal device.

Compared with the prior art, the embodiment of the invention has the following advantages:

Applying the technical solution provided by the embodiment of the present invention, the large-capacity uplink control information is carried in a truncated uplink control channel, in the case that the uplink control information needs to be transmitted in the uplink subframe in which the SRS signal is transmitted. In one or more time slots, thereby satisfying the requirement of the user to feed back more bits of uplink control information in one uplink control channel on the basis of maximally retaining the existing LTE system specifications, and providing specific simultaneous transmission Configuration scheme of SRS and uplink control information. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description For some embodiments of the present invention, other drawings may be obtained from those skilled in the art without departing from the drawings.

1 is a schematic structural diagram of a 3GPP Rel-8 LTE shortened PUCCH format 1/la/lb in the prior art;

2 is a schematic flowchart of a method for transmitting uplink control information on a base station side according to an embodiment of the present invention; FIG. 3 is a schematic flowchart of a method for transmitting uplink control information on a terminal device side according to an embodiment of the present invention;

4 to 14 are schematic diagrams of scenarios of resource mapping structures of multiple uplink sub-stations according to an embodiment of the present invention;

FIG. 15 is a schematic structural diagram of a base station according to an embodiment of the present invention;

FIG. 16 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In 3GPP (3rd Generation Partnership Project) Rd-8 (Release 8) LTE, the terminal equipment needs to periodically transmit SRS signals. The base station can configure whether the terminal device supports SRS and ACK/NAK and SR (that is, the foregoing uplink control information) are transmitted in the same uplink control channel.

If simultaneous transmission is supported, shorted PUCCH format 1/la/lb is used to transmit ACK/NAK and/or SR, so-called shortened PUCCH (truncated uplink control channel) is not on the last SC-FDMA symbol in the subframe. The ACK/NAK and/or SR are transmitted, and the terminal device transmits the SRS on the symbol according to a predetermined configuration policy, and its structure is as shown in FIG. 1 above.

In 3GPP LTE-A, in order to support a higher-end transmission mode, the terminal device may need to feed back more bits of uplink control information in one uplink control channel. Therefore, in 3GPP LTE-A, the PUCCH structure following Rd-8 cannot satisfy the large-capacity feedback requirement.

Based on such requirements, an embodiment of the present invention proposes a DFT-S-OFDM (Discrete Fourier Transform - Spread - Orthogonal Frequency Division) A new PUCCH structure of Multiplexing, Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing, based on this structure, a method for simultaneously transmitting SRS and uplink control information is presented.

As shown in FIG. 2, a schematic flowchart of a method for transmitting uplink control information according to an embodiment of the present invention includes the following steps:

Step S201: The base station receives a truncated uplink control channel carrying a reference signal and uplink control information.

The uplink control information is composed of one or more data symbols, and the data symbols are spread by a preset spreading sequence and then mapped to the SCs on the truncated uplink control channel according to a preset resource mapping structure together with the reference signal. In the FDMA symbol.

It should be noted that before this step is executed, it also includes:

The base station sends an indication message to the terminal device whether to allow the terminal device to simultaneously transmit the channel sounding reference signal and the uplink control information using the truncated uplink control channel.

In a specific application scenario, according to the difference in the setting of the timeslots in the truncated uplink control channel, the resource distribution in the truncated uplink control channel in this step includes the following two cases:

Case 1: The truncated uplink control channel contains only one slot.

One or more SC-FDMA symbols in the time slot transmit the reference signal, the last one

The SC-FDMA symbol is reserved for the channel sounding reference signal, and the remaining SC-FDMA symbols are used to transmit the uplink control information.

Case 2: The truncated uplink control channel includes multiple time slots

First, the last SC-FDMA symbol in the last time slot is reserved for the channel sounding reference signal.

Then, one or more SC-FDMA symbols in each slot transmit a reference signal. In addition to the above SC-FDMA symbols, the remaining SC-FDMA symbols in each slot transmit uplink control information.

It should be further pointed out that in the above case 2, since the last SC-FDMA symbol of the last time slot is fixed as the SRS signal reservation, other positions of the plurality of time slots in the truncated uplink control channel are Resource mapping structure, specifically can be divided For the following settings:

1. The resource mapping structure in each time slot is set as follows:

(1) The preset resource mapping structures are different from each other in all slots included in the truncated uplink control channel.

That is, the positions of the SC-FDMA symbols in which the reference signals and the data symbols are transmitted in the respective time slots are different from each other in the corresponding time slot.

(2) In the two or more time slots included in the truncated uplink control channel, the preset resource mapping structure is the same.

That is, in two or more time slots of the truncated uplink control channel, the SC-FDMA symbols transmitting the reference signal and the data symbol are in the same position in the corresponding time slot.

(3) Under the normal CP structure, in other time slots except the last time slot, the resource mapping structure of the conventional CP is used, and in the last time slot, other SC-FDMA symbols except the last SC-FDMA symbol are used. , using the resource mapping structure of the extended CP.

Based on this setting, it is possible to solve the problem that the last time slot is reserved for the SC-FDMA symbol of the SRS signal, resulting in one less SC-FDMA symbol that can be used for transmitting the uplink control information and the reference information than other time slots. The resource mapping structure in each slot is determined.

2. The frequency band position setting of the SC-FDMA symbol for transmitting the uplink control information is specifically as follows:

(1) In the truncated uplink control channel, SC-FDMA symbols for transmitting uplink control information in each slot are located in the same frequency band.

That is, all SC-FDMA symbols transmitting uplink control information in all slots are located in the same frequency band.

(2) In the truncated uplink control channel, SC-FDMA symbols for transmitting uplink control information in all or part of the slots are located in different frequency bands.

3. Whether the content of the uplink control information transmitted in each time slot is the same

Since the contents carried in the SC-FDMA symbols for transmitting the uplink control information are different from each other within one time slot, it is further required to set the time between the time slots. Whether the content of the tape is the same, the specific setting scheme includes:

(1) the content of the uplink control information transmitted by the SC-FDMA symbol transmitting the uplink control information except the last SC-FDMA symbol in the last slot included in the truncated uplink control channel, and other time slots The contents of the uplink control information transmitted by the SC-FDMA symbols transmitting the uplink control information except the last SC-FDMA symbol are the same.

The reason for this setting is to repeatedly transmit the same uplink control information through different time slots, but since the last SC-FDMA symbol of the last time slot is fixed for transmitting the SRS, the last time slot is better than before. The SC-FDMA symbol that can transmit the uplink control information is less than one time slot, and the amount of information transmitted by each SC-FDMA symbol is limited. Therefore, the technical solution proposed by the embodiment of the present invention is to use all the time slots. The contents of the uplink control information in the SC-FDMA symbols of the other uplink SC-FDMA symbols other than the last SC-FDMA symbol are repeatedly transmitted.

Of course, for other time slots except the last time slot, since there is no case where the SRS information occupies the SC-FDMA symbol, the uplink control information in all the SC-FDMA symbols transmitting the uplink control signal may be repeatedly transmitted.

Since the contents carried in the SC-FDMA symbols for transmitting the uplink control information are different from each other within one time slot, even if some or all of the uplink control information is repeatedly transmitted in each time slot, only one time slot transmits the uplink. The number of SC-FDMA symbols of the control signal is greater than 1, then the capacity of the uplink control signal transmitted in the truncated uplink control channel is compared with the scheme in which all SC-FDMA symbols in the prior art completely transmit the uplink control signal repeatedly. Has been increased.

(2) The content of the uplink control information transmitted in each time slot included in the truncated uplink control channel is the same.

In the above (1), the same uplink control information is repeatedly transmitted for each time slot, and in (2), the repeated transmission of each time slot is identical to the uplink control information.

Considering that one SC-FDMA symbol reserved for the SRS signal in the last time slot causes one SC-FDMA symbol that can be used for transmitting uplink control information and reference information less than other time slots, Different reference signal transmission structures Or, different spreading sequences are applied to the data symbols of the uplink control information, and the specific solution process is described in the following embodiments.

(3) The content of the uplink control information transmitted by each time slot included in the truncated uplink control channel is different from each other.

Such a setting scheme requires that the SC-FDMA symbols in each time slot cooperate to transmit uplink control information, and the base station needs to combine all the uplink control information carried in the SC-FDMA symbols in each time slot to obtain complete uplink control information, so that the complete uplink control information is obtained. The technical solution further increases the capacity of the uplink control signal transmitted in the truncated uplink control channel.

On the other hand, it should be noted that the foregoing data symbols are spread by a predetermined spreading sequence and are mapped together with the reference signal according to a preset resource mapping structure to each SC-FDMA symbol on the truncated uplink control channel. The specific implementation process is:

Determining the number and location of SC-FDMA symbols to which the data symbols need to be mapped according to a preset resource mapping structure, and selecting a corresponding spreading sequence in a preset one or more sets of spreading sequences to determine that the data symbols need to be mapped. The location of the SC-FDMA symbol.

The foregoing process for selecting a corresponding spreading sequence in a preset one or more sets of spreading sequences includes:

If the number of SC-FDMA symbols to which each data symbol needs to be mapped is the same, each data symbol selects a spreading sequence of the same length, and if the number of SC-FDMA symbols to which each data symbol needs to be mapped is different, each data symbol is selected differently. a spreading sequence of length; if the number of SC-FDMA symbols to be mapped by the same data symbol in different time slots is different, the data symbols select different lengths of spreading sequences in different time slots, if the same data The symbol has the same number of SC-FDMA symbols to be mapped in different time slots, and the data symbols select the same length spreading sequence in different time slots.

Step S202: The base station acquires uplink control information corresponding to one or more terminal devices according to the content carried in each SC-FDMA symbol that transmits the uplink control information in the truncated uplink control channel.

In a specific application scenario, the uplink transmitted according to the truncated uplink control channel The number of terminal devices corresponding to the control signals is different. This step can be further divided into the following cases:

Case 1: When the truncated uplink control channel carries the uplink control information corresponding to one or more terminal devices through all the time slots, the base station passes all the time slots of the truncated uplink control channel according to the preset resource mapping structure. Each of the uplink control information is transmitted

The content carried in the SC-FDMA symbol acquires uplink control information corresponding to one or more terminal devices.

Case 2: When the truncated uplink control channel repeatedly carries the uplink control information corresponding to one or more terminal devices by using each time slot, the base station passes a time slot of the truncated uplink control channel according to a preset resource mapping structure. And transmitting the content carried in each SC-FDMA symbol of the uplink control information, and acquiring uplink control information corresponding to one or more terminal devices. The description of the foregoing process flow is the implementation process of the technical solution of the embodiment of the present invention on the base station side. On the other hand, the embodiment of the present invention further provides an implementation process of the technical solution on the terminal device side. , including the following steps:

Step S301: The terminal device divides the uplink control information corresponding to the terminal device into one or more data symbols.

Step S302: The terminal device maps the uplink control signal that is spread by the preset spreading sequence with the reference signal to each SC-FDMA symbol on the truncated uplink control channel according to a preset resource mapping structure.

In a specific application scenario, the resource distribution in the truncated uplink control channel in this step is the same as that in the foregoing step S201, according to the difference in the setting of the time slot in the truncated uplink control channel. Repeat the description.

The selection process of the spreading sequence and the specific resource allocation process according to the resource mapping structure are implemented by the terminal device itself.

Step S303: The terminal device sends the truncated uplink control channel to the base station, so that the base station acquires the uplink control corresponding to the terminal device according to the content carried in each SC-FDMA symbol that transmits the uplink control information in the truncated uplink control channel. information. It should be noted that, before this step, the terminal device further includes a process of receiving, by the base station, whether the terminal device is allowed to use the truncated uplink control channel to simultaneously transmit the channel sounding reference signal and the indication message of the uplink control information.

If the terminal device receives an indication message that allows the use of the truncated uplink control channel to simultaneously transmit the channel sounding reference signal and the uplink control information, the terminal device always uses the truncated uplink in the uplink subframe in which the system configures the channel sounding reference signal to be transmitted. The control channel transmits uplink control signaling, and when the channel sounding reference signal needs to be transmitted, the terminal device transmits the channel sounding reference signal on the last SC-FDMA symbol in the uplink subframe.

In a specific application scenario, the number of terminal devices corresponding to the uplink control signal transmitted by the truncated uplink control channel is different, and step S303 can be further divided into the following situations:

Case 1: When the truncated uplink control channel carries the uplink control information corresponding to the terminal device through all the time slots, the terminal device combines the uplink control signal spread by the preset spreading sequence with the reference signal according to the preset The resource mapping structure maps to each SC-FDMA symbol in all slots on the truncated uplink control channel.

Case 2: When the truncated uplink control channel repeatedly carries the uplink control information corresponding to the terminal device by using each time slot, the terminal device presets the uplink control signal spread by the preset spreading sequence together with the reference signal. The resource mapping structure maps to each SC-FDMA symbol in a slot on the truncated uplink control channel.

Applying the technical solution provided by the embodiment of the present invention, the large-capacity uplink control information is carried in a truncated uplink control channel, in the case that the uplink control information needs to be transmitted in the uplink subframe in which the SRS signal is transmitted. In one or more time slots, thereby satisfying the requirement of the user to feed back more bits of uplink control information in one uplink control channel on the basis of maximally retaining the existing LTE system specifications, and providing specific simultaneous transmission Configuration scheme of SRS and uplink control information. The technical solutions proposed in the embodiments of the present invention are described in detail below with reference to specific application scenarios. In order to maintain the compatibility with the LTE system, in the technical solution proposed by the embodiment of the present invention, the configuration policy of the SC-FDMA symbol for transmitting the SRS signal in the uplink control channel is unchanged, that is, the terminal device can only be in the uplink control channel. The SRS is transmitted on the last SC-FDMA symbol of the last time slot.

The technical solution proposed by the embodiment of the present invention mainly considers the load size of multiple uplink control information supported by the uplink control channel, and according to the specific uplink control channel resource configuration and the uplink control channel in the uplink control channel for transmitting the SRS information. The terminal device may use the resource configuration structure of the uplink control channel according to the following embodiments to transmit the uplink control information. The first embodiment supports the same physical resource. Two terminal devices simultaneously multiplex and transmit an uplink control channel, where two time slots of the uplink control channel transmit different uplink control information, and two time slots are located in the same frequency band.

As shown in FIG. 4, there are two slots in an uplink control channel, wherein the last SC-FDMA symbol of the last slot is reserved for SRS information, and two SC-FDMA symbols are used in each slot. For transmitting RS (Reference Signal), the remaining SC-FDMA symbols are all used to transmit uplink control information.

In this case, in the present embodiment, a time domain CDM (Code-Division Multiplexing) is used to support two terminal devices to transmit uplink control information on a physical resource block (PRB). The RS structure on the two time slots is the same, but the spreading sequence is different. The last SC-FDMA symbol in the second time slot is reserved for transmitting the SRS signal, and does not transmit the uplink control information and the RS.

In this scenario, there are five SC-FDMA symbols in the first time slot (Slot 0) to transmit uplink control information, and four SC-FDMA symbols in the second time slot (Slot 1) to transmit uplink control information, for a total of nine The SC-FDMA symbol transmits uplink control information.

Since different uplink control information is transmitted in two time slots, and after QPSK (Quaternary Phase Shift Keying) modulation, one SC-FDMA symbol can transmit 24-bit information, so the uplink control channel The maximum number of uplink control information bits that can be supported is 216 bits (24 X 9=216). However, since resources in the SC-FDMA symbol need to be shared by two terminal devices, The two terminal devices need to perform spreading processing on the uplink control information.

Assuming QPSK modulation, [D1, D2, D3, D4] shown in Figure 4 represents the corresponding data, Di contains 24 coded bits, and Dl, D3 and D4 use a spreading sequence of length 2. Spreading is performed and mapped onto two SC-FDMA symbols (24 bits); To make full use of resources, D2 uses a spreading sequence of length 3 for spreading and mapping to three SC-FDMA symbols. Therefore, in the application scenario shown in this embodiment, each terminal device can transmit a 96-bit uplink control signal in the uplink control channel at most.

In the application scenario shown in Figure 4, [wl, w2, w3] and [vl, v2] are both scaler. Each data symbol Di is multiplied by the corresponding wi or vi and transmitted on an SC-FDMA symbol.

Among them, [wl, w2, w3], [vl, v2] of different terminal devices are orthogonal, and any orthogonal sequence can be used as [wl, w2, w3], [vl, v2] „ For example:

[wi,w2,w3] {[ΐ,ι,ΐ], [1 ^2π/ ν ^4π/3 ], [i, ^4n/ \ ^2n/2 ] } ,

[vl,v2] { [1,1] , [1,-1] }.

In the actual application scenario, which sequence is specifically used, and the specific value of the sequence does not affect the protection scope of the present invention. In the second embodiment, two terminal devices are supported on the same physical resource to simultaneously multiplex the transmission uplink control channel, where two time slots of the uplink control channel transmit different uplink control information, and two time slots are located in different frequency bands.

In FIG. 5, there are two time slots in one uplink control channel, and two time slots are respectively located in two different frequency bands by using Frequency Hopping. In the uplink control channel, SC- of RS and SRS information is transmitted. The configuration of the FDMA symbol is similar to that of Figure 4. The last SC-FDMA symbol of the last slot is reserved for SRS information. There are two SC-FDMA symbols in each slot for transmitting RS, and the remaining SC. The -FDMA symbols are all used to transmit uplink control information.

In this case, the time domain CDM is adopted in this embodiment, in a PRB. The two terminal devices are supported to transmit uplink control information, where the RS structures on the two time slots are the same, but the spreading sequences are different, and the last SC-FDMA symbol in the second time slot is reserved for transmitting the SRS signal, and the uplink control is not transmitted. Information and RS.

In the application scenario shown in Figure 5, the two slots using FM (Frequency Hopping) of another sub-embodiment ¹ stands on two different frequency bands, Frequency Hopping refers to a first slot and a second slot transmission The transfer does not occur on the same PRB.

Since two terminal devices can be supported on one PRB, each terminal device can transmit 96 coded bits.

The specific resource mapping structure is set as described in the foregoing first embodiment, and the description is not repeated here. In the third embodiment, two terminal devices are supported on the same physical resource to simultaneously multiplex the transmission uplink control channel, and two time slots of the uplink control channel repeatedly transmit the same uplink control information, and two time slots are located in the same frequency band.

In the application scenario shown in FIG. 6, the same uplink control information is repeatedly transmitted in two time slots, and the RS structure on each time slot is the same, but the spreading sequence used is different, and each terminal device can transmit 48. Coded bits.

The specific resource mapping structure is set as described in the foregoing Embodiment 2, and the description is not repeated here. Embodiment 4, supporting two terminal devices to simultaneously multiplex and transmit an uplink control channel on the same physical resource, where two time slots of the uplink control channel repeatedly transmit the same uplink control information, and two time slots are located in the same frequency band, and two Different resource mapping structures in time slots The application scenario shown in FIG. 7 differs from the foregoing embodiment 3 in that the RS structures in the two time slots are different, that is, the first time slot (Slot 0) uses the RS structure of the conventional CP. , second slot (Slot 1) other SC-FDMA symbols except the last SC-FDMA symbol The RS structure of the extended CP is used, and other resource configurations are basically similar. Therefore, only the position of the SC-FDMA symbol allocated by the data symbol D2 in the second slot needs to be adjusted accordingly, and the rest of the settings are No change, the description will not be repeated here.

The difference between the application scenario shown in FIG. 8 and the foregoing embodiment 3 is that the resource mapping structure in the two slots is different, that is, the first slot (Slot 0 ) uses the resource mapping structure of the regular CP, and the second slot ( Slot 1) The resource mapping structure of the extended CP is used on other SC-FDMA symbols except the last SC-FDMA symbol. Compared with the third embodiment, since the resource structure difference between the two slots is large, the data symbol D1 The position of the SC-FDMA symbol allocated by D2 must be adjusted accordingly. At this time, in two time slots, the number of SC-FDMA symbols allocated by D1 and D2 is two, so the corresponding The scalers are all [vl, v2]. It should be noted that the foregoing Embodiments 1 to 4 are all described in the case where the uplink control channel supports two terminal devices to transmit uplink control signals. In an actual application scenario, Whether the above-mentioned repeated transmission, whether to adjust the frequency, whether the same resource mapping structure is adopted in different time slots, or the like can be combined and used, and the policy combination forms are not listed one by one. The changes do not affect the scope of protection of the present invention.

Moreover, the number of time slots included in the uplink control channel, the number of SC-FDMA symbols included in each slot, the number of data symbols divided according to the modulation scheme of QPSK, and the specific content of the resource mapping structure are also Adjustments can be made according to actual application scenarios, and such changes do not affect the scope of protection of the present invention. Further, in the embodiment of the present invention, the implementation manner of the corresponding technical solution in the case where the uplink control channel supports the four terminal devices to transmit the uplink control signal is as follows:

Embodiment 5, supporting four terminal devices on the same physical resource to simultaneously multiplex and transmit an uplink control channel, where two time slots of the uplink control channel repeatedly transmit the same uplink control information, and two time slots are located in the same frequency band, and two The resource mapping structure on the time slots is the same as shown in Figure 9. There are two time slots in one uplink control channel, the last one. The last SC-FDMA symbol of the slot is used to transmit SRS information, and two SC-FDMA symbols are used to transmit the RS in each of the two slots, and the remaining SC-FDMA symbols are all used to transmit the uplink control information.

In this case, in the embodiment, the time domain CDM is used to support four terminal devices to transmit uplink control information on one PRB. The RS structure on the two time slots is different, and the spreading sequence is also different. The last SC-FDMA symbol in the second time slot is reserved, and the uplink control information and the RS are not transmitted.

Since the same uplink control information is repeatedly transmitted in the two slots, the maximum number of uplink control information bits that can be supported on the uplink control channel is 24 bits. However, since the resources in the SC-FDMA symbol need to be shared by the four terminal devices, the four terminal devices need to perform spreading processing on the uplink control information.

Assuming QPSK modulation, D1 shown in Figure 9 represents the corresponding data, and D1 contains 24 coded bits. D1 in the first slot shown in FIG. 13 is spread using a spreading sequence of length 5 and mapped into five SC-FDMA symbols, and D1 in the second slot is spread using a length of four. The sequence is spread and mapped to the four SC-FDMA symbols. Therefore, in the application scenario shown in this embodiment, each terminal device can transmit up to 24 bits of uplink control information in the uplink control channel.

In the application scenario shown in FIG. 9, the first time slot uses a spreading sequence of SF=5 [wl, w2, w3, w4, w5], and the last SC-FDMA symbol in the second time slot is reserved, and is not transmitted. Uplink control information and RS, therefore using the spreading sequence [vl, v2, v3, v4] of SF=4, subject to the limitation of the spreading sequence on the second time slot, [wl, w2, w3, w4, w5] and [ Vl, v2, v3, v4] are scaler. The data symbol D1 is multiplied by the corresponding wi or vi and transmitted on an SC-FDMA symbol.

Among them, [wl, w2, w3, w4, w5] and [vl, v2, v3, v4] of different terminal devices are orthogonal, and any orthogonal sequence can be used as [wl, w2, w3, w4, w5] and [vl,v2,v3,v4].

E.g:

[wl,w2,w3,w4,w5] { [1,1,1,1,1], [1, d ^27t/5 , d ^47t/5 , d ^67t/5 , d ^87t/5 ], [1 , d ^47t/5 ,

} ,

[vl,v2, ν3,ν4] { [1,1,1,1] , [1,-1,1,-1] , [1,1,-1,-1], [1,-1, -1,1] }. In the actual application scenario, which sequence is specifically used, and the specific value of the sequence does not affect the protection scope of the present invention. In the sixth embodiment, four terminal devices are supported on the same physical resource to simultaneously multiplex the transmission uplink control channel, and two time slots of the uplink control channel repeatedly transmit the same uplink control information, and the two time slots are located in the same frequency band, and two Different RS structures on time slots

The application scenario shown in FIG. 10 differs from the foregoing embodiment 5 in that the RS structures in the two slots are different, that is, the first slot (Slot O) transmits the RS signal using three SC-FDMA symbols, and the second time The RS structure of the slot (Slot l) is the same as that of the fifth embodiment, and other resource configurations are basically similar. Therefore, compared with the fifth embodiment, the resource mapping rule of the data symbol D1 in the second slot does not change, and the resource mapping structure in the first slot needs to be adjusted accordingly, especially because there are three SC- The FDMA symbol transmits the RS. Therefore, in the first time slot, the number of SC-FDMA symbols allocated by D1 becomes four, and therefore, the corresponding scaler is also adjusted to [vl, v2, v3, v4]. It should be noted that the above-mentioned Embodiment 5 and Embodiment 6 are described in the case where the uplink control channel supports four terminal devices to transmit uplink control signals. In an actual application scenario, whether the above-mentioned repeated transmission, whether frequency modulation or not Policies such as whether to use the same resource mapping structure in different time slots can be used in combination, and are not enumerated here. Such changes in the combination of policies do not affect the scope of protection of the present invention.

Moreover, the number of time slots included in the uplink control channel, the number of SC-FDMA symbols included in each slot, the number of data symbols divided according to the modulation scheme of QPSK, and the specific content of the resource mapping structure are also Adjustments can be made according to actual application scenarios, and such changes do not affect the scope of protection of the present invention. Further, in the embodiment of the present invention, when the uplink control channel supports only one terminal device to transmit an uplink control signal, in this case, the spreading sequence is equivalent to adopting a special assignment, that is, the spreading sequence is 1 The implementation form of the corresponding technical solution is as follows: Embodiment 7: Supporting one terminal device on the same physical resource to simultaneously multiplex the transmission uplink control channel, where two time slots of the uplink control channel repeatedly transmit the same uplink control information, and two time slots are located in the same frequency band.

As shown in FIG. 11, there are two slots in an uplink control channel, wherein the last SC-FDMA symbol of the last slot is used to transmit SRS information, and two SC-FDMA symbols are used in each of the two slots. The RS is transmitted, and the remaining SC-FDMA symbols are all used to transmit uplink control information.

In this scenario, there are five SC-FDMA symbols in the first time slot (Slot 0) to transmit uplink control information, and four SC-FDMA symbols in the second time slot (Slot 1) to transmit uplink control information, and in one The uplink control information transmitted by each SC-FDMA symbol in the time slot is different from each other, but the uplink control transmitted by the first four SC-FDMA symbols in the first time slot (Slot O ) and the second time slot (Slot 1 ) The information is the same, that is, repeated transmission.

In this case, since there are repeated transmissions of uplink control information in two slots, and after QPSK modulation, one SC-FDMA symbol can transmit 24-bit information, so the maximum uplink that the uplink control channel can support The number of control information bits is 120 bits, that is, the maximum uplink control information transmission amount of the five SC-FDMA symbols in the first time slot (24 5 = 120 ).

Wherein, since the content of only four SC-FDMA symbols in the two slots is repeated transmission, that is, only the content of the first 96 bits is repeatedly transmitted on two slots of one uplink control channel, and the last of the first slot The uplink control information in one SC-FDMA symbol is not repeatedly transmitted in the second slot, and the last SC-FDMA symbol in the second slot is reserved for transmitting the SRS signal, and is not used for transmitting the uplink control information and the RS.

As for how the uplink control information in the last SC-FDMA symbol in the first time slot is repeatedly transmitted or whether it is repeatedly transmitted, it can be adjusted according to actual needs, and such a change does not affect the protection scope of the present invention. Embodiment 8: Supporting one terminal device to simultaneously multiplex and transmit an uplink control channel on the same physical resource, where two time slots of the uplink control channel repeatedly transmit the same uplink control information, and two time slots are located in different frequency bands. Similar to FIG. 11 described above, in FIG. 12, there are two time slots in one uplink control channel, and there are cases in which two uplink time slots have repeated transmission of uplink control information, and therefore, the maximum uplink control information that the uplink control channel can support The number of bits is also 120 bits, and the content of the first 96 bits of uplink control information is repeatedly transmitted in two slots. For specific description, refer to the description in the foregoing embodiment, and the description is not repeated here.

The difference between the technical solutions shown in FIG. 12 and FIG. 11 is that, in the application scenario shown in FIG. 12, two time slots are respectively located in two different frequency bands by using frequency hopping, and Frequency Hopping refers to the first. The transmission of the time slot and the transmission of the second time slot do not occur on the same PRB. Embodiment 9: Supporting one terminal device on the same physical resource to simultaneously multiplex the transmission uplink control channel, where two time slots of the uplink control channel transmit different uplink control information, and two time slots are located in different frequency bands.

Similar to FIG. 12 above, in FIG. 13, two time slots exist in one uplink control channel, and two time slots are respectively located in two different frequency bands by using Frequency Hopping, in which the transmission is transmitted. The configuration of the SC-FDMA symbols of the RS and SRS information is similar to that of FIG. 11 and FIG. 12, and the detailed description is as before, and the description will not be repeated here.

The difference between the technical solutions shown in FIG. 13 and FIG. 12 is that the uplink control information is not repeatedly transmitted in the two time slots, but different uplink control information is transmitted. Therefore, although the uplink control channel is used for transmitting the uplink control signal, The number of SC-FDMA symbols is still nine, but the maximum number of uplink control information bits that it can support is no longer 120 bits, but 216 bits (24 9=216).

In this case, the capacity of the uplink control information that can be transmitted by the uplink control channel is further increased. Embodiment 10, supporting one terminal device to simultaneously multiplex and transmit an uplink control channel on the same physical resource, where two time slots of the uplink control channel transmit different uplink control information, two time slots are located in different frequency bands, and two times Different resource mapping structures in the gap As shown in FIG. 14, two time slots exist in one uplink control channel, and two time slots are respectively located in two different frequency bands by using Frequency Hopping, and two time slots in the uplink control channel are also not repeated. The uplink control information is transmitted, but different uplink control information is transmitted, which is similar to the situation in FIG. 13, and the description is not repeated here.

The difference between the technical solutions shown in FIG. 14 and FIG. 13 is that the resource mapping structures in the two time slots of the uplink control channel are different, and the first time slot (Slot 0) uses the RS structure of the regular CP, and the second time slot ( Slot 1) The resource mapping structure of the extended CP is used on other SC-FDMA symbols than the last SC-FDMA symbol. It should be noted that the above-mentioned Embodiment 7 to Embodiment 10 are described in the case where the uplink control channel only supports one terminal device to transmit an uplink control signal. In an actual application scenario, whether the above-mentioned repeated transmission is performed, whether or not the frequency modulation is performed Policies such as whether to adopt the same resource mapping structure in different time slots can be used in combination. Here, no longer, the changes in the combination of policies do not affect the scope of protection of the present invention.

In addition, the number of time slots included in the uplink control channel, the number of SC-FDMA symbols included in each time slot, and the like can also be adjusted according to actual application scenarios, and such changes do not affect the protection scope of the present invention. In the technical solutions proposed in the above embodiments, the following changes can be included in the idea of the present invention:

Each subframe may contain one, two, or multiple time slots.

The number of SC-FDMA symbols in each slot may not be 7, for example, the extended CP in 3GPP LTE has 6 SC-FDMA symbols per slot.

The RS SC-FDMA symbol of each slot may be one or more.

The location of the RS SC-FDMA symbols and the data SC-FDMA symbols for each time slot can be different from the examples in the present invention.

The use of multiple SC-FDMA symbols for each symbol Di in the time domain using CDM may differ from the examples in the present invention.

Each symbol Di can be obtained by SC-FDMA modulation, or by single Carrier SC-FDMA modulation is obtained.

The PRB may be composed of more or less than 12 REs, and each RE may have a different frequency in the frequency domain than 15 kHz.

The embodiment of the present invention supports one, two, and four terminal devices in one PRB as an example, and can also be extended to support the number of other terminal devices in one PRB.

Applying the technical solution provided by the embodiment of the present invention, the large-capacity uplink control information is carried in a truncated uplink control channel, in the case that the uplink control information needs to be transmitted in the uplink subframe in which the SRS signal is transmitted. In one or more time slots, thereby satisfying the requirement of the user to feed back more bits of uplink control information in one uplink control channel on the basis of maximally retaining the existing LTE system specifications, and providing specific simultaneous transmission Configuration scheme of SRS and uplink control information. In order to implement the technical solution proposed by the embodiment of the present invention, the embodiment of the present invention further provides a base station, and a schematic structural diagram thereof is shown in FIG.

The receiving module 151 is configured to receive a truncated uplink control channel that carries the reference signal and the uplink control information.

Case 1: The truncated uplink control channel contains only one slot.

Case 2: The truncated uplink control channel includes multiple time slots

First, the last SC-FDMA symbol in the last time slot is the channel sounding parameter. The test signal is reserved.

It should be further pointed out that in the above case 2, since the last SC-FDMA symbol of the last time slot is fixed as the SRS signal reservation, other positions of the plurality of time slots in the truncated uplink control channel are The resource mapping structure can be divided into the following aspects:

1. The resource mapping structure in each time slot is set as follows:

(1) In the truncated uplink control channel, SC-FDMA symbols for transmitting uplink control information in each slot are located in the same frequency band. That is, all SC-FDMA symbols transmitting uplink control information in all slots are located in the same frequency band.

Since the content carried in the SC-FDMA symbols for transmitting the uplink control information is different from each other within a time slot, it is further required to set whether the content carried between the time slots is the same. The specific setting scheme includes :

Since the contents carried in the SC-FDMA symbols for transmitting the uplink control information are different from each other within one time slot, even if some or all of the uplink control information is repeatedly transmitted in each time slot, only one time slot transmits the uplink. The number of SC-FDMA symbols of the control signal is greater than 1, then the capacity of the uplink control signal transmitted in the truncated uplink control channel is compared with the scheme in which all SC-FDMA symbols in the prior art completely transmit the uplink control signal repeatedly. Has been increased. (2) The content of the uplink control information transmitted by each time slot included in the truncated uplink control channel is the same.

Considering that one SC-FDMA symbol reserved for the SRS signal in the last time slot causes one SC-FDMA symbol that can be used for transmitting uplink control information and reference information less than other time slots, The different reference signal transmission structures or the data symbols of the uplink control information are applied by using different spreading sequences. For the specific solution process, refer to the description of the following embodiments.

The obtaining module 152 is configured to obtain uplink control information of one or more terminal devices according to content carried in each SC-FDMA symbol that transmits uplink control information in the uplink control channel received by the receiving module 151.

Further, the base station further includes:

The setting module 153 is configured to set a resource mapping structure of the spreading sequence and the uplink control information corresponding to the one or more terminal devices in the truncated uplink control channel.

The sending module 154 is configured to send, to the terminal device, an indication message for allowing the terminal device to simultaneously transmit the channel sounding reference signal and the uplink control information by using the truncated uplink control channel.

Determining, according to the resource mapping structure set by the setting module 153, the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and in a preset one or more sets of spreading sequences The corresponding spreading sequence is selected in the column to determine the location of the SC-FDMA symbol to which the data symbol needs to be mapped.

If the number of SC-FDMA symbols to which each data symbol needs to be mapped is the same, each data symbol selects a spreading sequence of the same length, and if the number of SC-FDMA symbols to which each data symbol needs to be mapped is different, each data symbol is selected differently. Length-spreading sequence; if the number of SC-FDMA symbols to be mapped by the same data symbol in different time slots is different, the data symbols select different spreading sequences in time slots of different lengths, if the same data The symbol has the same number of SC-FDMA symbols to be mapped in different time slots, and the data symbols select the same length spreading sequence in different time slots.

Correspondingly, the obtaining module 152 is specifically configured to:

When the truncated uplink control channel carries the uplink control information corresponding to one or more terminal devices through all the time slots, the obtaining module 152 passes the truncated uplink control channel according to the resource mapping structure set by the setting module 153. Acquiring the content carried in each SC-FDMA symbol of the uplink control information in the slot, and acquiring uplink control information corresponding to the terminal device;

When the truncated uplink control channel repeatedly carries the uplink control information corresponding to the one or more terminal devices by using the time slot, the obtaining module 152 passes the truncated uplink control channel according to the resource mapping structure set by the setting module 153. The content carried in each SC-FDMA symbol of the uplink control information is obtained in the time slot, and the uplink control information corresponding to the terminal device is obtained. On the other hand, the embodiment of the present invention further provides a terminal device, and its structure is shown in FIG. 16 . As shown, it specifically includes:

The setting module 161 is configured to set an information carrying policy and a resource mapping structure.

The dividing module 162 is configured to divide the uplink control information corresponding to the terminal device into one or more data symbols. The allocating module 163 is configured to map the uplink control signal that is spread by the preset spreading sequence with the reference signal to each SC-FDMA symbol on the truncated uplink control channel according to the resource mapping structure set by the setting module 161. in.

The corresponding description is as before, and the description will not be repeated here.

The allocating module 163 is further configured to determine, according to the resource mapping structure of the setting module 161, the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and select corresponding ones in a preset one or more sets of spreading sequences. A spreading sequence that determines the location of the SC-FDMA symbol to which the data symbol needs to be mapped.

The sending module 164 is configured to send, to the base station, the truncated uplink control channel for performing resource mapping by the allocating module 163, so that the base station transmits the content carried in each SC-FDMA symbol of the uplink control information according to the truncated uplink control channel, Obtaining the uplink control information corresponding to the terminal device, specifically:

When the information carrying policy set by the setting module 161 is that the truncated uplink control channel carries the uplink control information corresponding to the terminal device through all the time slots, the allocating module 163 performs the uplink control signal that is spread by the preset spreading sequence. Mapping with the reference signal in accordance with the resource mapping structure set by the setting module 161 to each SC-FDMA symbol in all slots on the truncated uplink control channel;

When the information carrying policy set by the setting module 161 is that the truncated uplink control channel repeatedly carries the uplink control information corresponding to the terminal device through each time slot, the allocating module 163 performs the uplink control after the predetermined spreading sequence is spread. The signal is mapped with the reference signal in each SC-FDMA symbol in one slot of the truncated uplink control channel according to the resource mapping structure set by the setting module 161.

Further, the foregoing terminal device further includes:

The receiving module 165 is configured to receive, by the base station, an indication message that is sent by the base station to allow the terminal device to simultaneously transmit the channel sounding reference signal and the uplink control information by using the truncated uplink control channel;

If the receiving module 165 receives an indication message that allows the use of the truncated uplink control channel to simultaneously transmit the channel sounding reference signal and the uplink control information, the transmitting module 164 is always in the uplink subframe of the system configured to transmit the channel sounding reference signal. , use truncation The uplink control channel transmits uplink control signaling, and when the channel sounding reference signal needs to be transmitted, the transmitting module 164 transmits the channel sounding reference signal on the last SC-FDMA symbol in the uplink subframe.

Applying the technical solution provided by the embodiment of the present invention, the large-capacity uplink control information is carried in a truncated uplink control channel, in the case that the uplink control information needs to be transmitted in the uplink subframe in which the SRS signal is transmitted. In one or more time slots, thereby satisfying the requirement of the user to feed back more bits of uplink control information in one uplink control channel on the basis of maximally retaining the existing LTE system specifications, and providing specific simultaneous transmission Configuration scheme of SRS and uplink control information. Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments of the present invention can be implemented by hardware or by means of software plus a necessary general hardware platform. Based on the understanding, the technical solution of the embodiment of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.). A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various implementations of the embodiments of the present invention.

A person skilled in the art can understand that the drawings are only a schematic diagram of a preferred implementation scenario, and the modules or processes in the drawings are not necessarily required to implement the embodiments of the present invention.

A person skilled in the art may understand that the modules in the apparatus in the implementation scenario may be distributed in the apparatus for implementing the scenario according to the implementation scenario description, or may be correspondingly changed in one or more devices different from the implementation scenario. The modules of the above implementation scenarios may be combined into one module, or may be further split into multiple sub-modules.

The serial numbers of the foregoing embodiments of the present invention are merely for description, and do not represent the advantages and disadvantages of the implementation scenarios. The embodiment is not limited thereto, and any changes that can be made by those skilled in the art should fall within the scope of protection of the embodiments of the present invention.

Claims

Rights request

A method for transmitting uplink control information, which is characterized by the following steps:

The base station receives the truncated uplink control channel carrying the reference signal and the uplink control information, where the uplink control information is composed of one or more data symbols, and the data symbol is spread by a preset spreading sequence and the reference signal Mapping together to each SC-FDMA symbol on the truncated uplink control channel according to a preset resource mapping structure;

And the base station acquires uplink control information corresponding to one or more terminal devices according to the content carried in each SC-FDMA symbol that transmits the uplink control information in the truncated uplink control channel.

2. The method according to claim 1, wherein before the receiving, by the base station, the truncated uplink control channel carrying the reference signal and the uplink control information, the method further includes:

And the base station sends an indication message to the terminal device whether to allow the terminal device to simultaneously transmit the channel sounding reference signal and the uplink control information by using the truncated uplink control channel.

The method of claim 1, wherein the truncated uplink control channel specifically includes:

When the truncated uplink control channel includes only one slot, one or more SC-FDMA symbols in the slot transmit a reference signal, and the last SC-FDMA symbol is reserved for the channel sounding reference signal, and the remaining SC-FDMA symbol transmission uplink control information;

When the truncated uplink control channel includes multiple time slots, one or more SC-FDMA symbols in each time slot transmit a reference signal, and the last SC-FDMA symbol in the last time slot is a channel sounding reference. The signal is reserved, and the remaining SC-FDMA symbols in each slot transmit uplink control information.

4. The method according to claim 3, wherein when the truncated uplink control channel includes multiple time slots, one or more SC-FDMA symbols in each time slot transmit a reference signal, and finally The last SC-FDMA symbol in one slot is reserved for the channel sounding reference signal, and the remaining SC-FDMA symbols transmit the uplink control information, and further includes: Transmitting uplink control information in each time slot in the truncated uplink control channel

SC-FDMA symbols are located in the same frequency band; or,

In the truncated uplink control channel, SC-FDMA symbols transmitting uplink control information in all or part of the time slots are located in different frequency bands.

The method according to claim 3, wherein when the truncated uplink control channel includes multiple time slots, one or more SC-FDMA symbols in each time slot transmit a reference signal, and finally The last SC-FDMA symbol in one slot is reserved for the channel sounding reference signal, and the remaining SC-FDMA symbols transmit the uplink control information, further comprising: in the last time slot included in the truncated uplink control channel SC-FDMA of the uplink control information transmitted by the SC-FDMA symbol transmitting the uplink control information except the last SC-FDMA symbol, and SC-FDMA transmitting the uplink control information except the last SC-FDMA symbol in the other slots The content of the uplink control information transmitted by the symbol is the same; or,

Repeating transmission of the same uplink control information in each time slot included in the truncated uplink control channel; or

The content of the uplink control information transmitted by each time slot included in the truncated uplink control channel is different from each other.

The method according to claim 1, wherein the data symbol is spread by a predetermined spreading sequence, and then mapped to the truncated uplink control channel according to a preset resource mapping structure together with a reference signal. Each of the SC-FDMA symbols includes: determining, according to the preset resource mapping structure, the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and in a preset one or more groups A corresponding spreading sequence is selected in the spreading sequence to determine the location of the SC-FDMA symbol to which the data symbol needs to be mapped.

The method according to claim 6, wherein, according to the preset resource mapping structure, determining the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and in a preset group Or selecting a corresponding spreading sequence from the plurality of sets of spreading sequences, determining a location of the SC-FDMA symbol to which the data symbol needs to be mapped, and further comprising:

In the all time slots included in the truncated uplink control channel, the preset resource Source mapping structures are different from each other; or,

In the two or more time slots included in the truncated uplink control channel, the preset resource mapping structure is the same; or

In the regular CP structure, in the other time slots except the last time slot, use the conventional

The resource mapping structure of the CP, in the last slot, except for the last SC-FDMA symbol other than the last SC-FDMA symbol, uses the resource mapping structure of the extended CP.

The method according to claim 6, wherein, according to the preset resource mapping structure, determining the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and in a preset group Or selecting a corresponding spreading sequence from the plurality of sets of spreading sequences, specifically including:

If the number of SC-FDMA symbols to which each data symbol needs to be mapped is the same, each data symbol selects a spreading sequence of the same length, and if the number of SC-FDMA symbols to which each data symbol needs to be mapped is different, each data symbol is selected differently. a spreading sequence of length; if the number of SC-FDMA symbols to be mapped by the same data symbol in different time slots is different, the data symbols select different lengths of spreading sequences in different time slots, if the same A data symbol has the same number of SC-FDMA symbols to be mapped in different time slots, and the data symbols select a spreading sequence of the same length in different time slots.

The method according to claim 1, wherein the base station acquires one or more terminals according to content carried in each SC-FDMA symbol for transmitting uplink control information in the truncated uplink control channel. The uplink control information corresponding to the device is specifically as follows:

When the truncated uplink control channel carries uplink control information corresponding to one or more terminal devices through all time slots, the base station passes all of the truncated uplink control channels according to a preset resource mapping structure. And transmitting the content carried in each SC-FDMA symbol of the uplink control information in the time slot, and acquiring uplink control information corresponding to the one or more terminal devices;

When the truncated uplink control channel repeatedly carries uplink control information corresponding to one or more terminal devices by using each time slot, the base station according to a preset resource mapping node And acquiring, by using the content carried in each SC-FDMA symbol of the uplink control information, in one time slot of the truncated uplink control channel, acquiring uplink control information corresponding to the one or more terminal devices.

A base station, which is characterized in that:

a receiving module, configured to receive a truncated uplink control channel carrying a reference signal and uplink control information, where the uplink control information is composed of one or more data symbols, and the source mapping structure is mapped to the truncated uplink control In each SC-FDMA symbol on the channel;

And an obtaining module, configured to acquire uplink control information of one or more terminal devices according to content carried in each SC-FDMA symbol that transmits uplink control information in the uplink control channel received by the receiving module.

11. The base station according to claim 10, further comprising

a setting module, configured to set a resource mapping structure of the spreading sequence and the uplink control information corresponding to the one or more terminal devices in the truncated uplink control channel; the uplink control channel simultaneously transmits the channel sounding reference signal and the uplink control An indication message for the message.

The base station according to claim 10, wherein the truncated uplink control channel specifically includes:

The base station according to claim 12, wherein when the truncated uplink control channel includes multiple time slots, one or more SC-FDMA symbols in each time slot transmit a reference signal, and finally The last SC-FDMA symbol in a time slot is reserved for the channel sounding reference signal, and the remaining SC-FDMA symbols in each time slot transmit the uplink control information, which specifically includes:

In the truncated uplink control channel, SC-FDMA symbols transmitting uplink control information in each time slot are located in the same frequency band, or uplink control is transmitted in all or part of the time slots in the truncated uplink control channel. The SC-FDMA symbols of the information are located in different frequency bands; and/or,

The content of the uplink control information transmitted by the SC-FDMA symbol transmitting the uplink control information except the last SC-FDMA symbol in the last slot included in the truncated uplink control channel, and other time slots The content of the uplink control information transmitted by the SC-FDMA symbol transmitting the uplink control information other than the last SC-FDMA symbol is the same, or the same uplink control information is repeatedly transmitted in each time slot included in the truncated uplink control channel. Or the content of the uplink control information transmitted by each time slot included in the truncated uplink control channel is different; and/or,

In all the slots included in the truncated uplink control channel, the structures corresponding to the SC-FDMA symbols transmitting the reference signals are different from each other, or two or more of the SC-FDMA symbols included in the truncated uplink control channel In the time slot, the SC-FDMA symbol transmitting the reference signal has the same structure, or in the regular CP structure, the SC-FDMA symbol transmitting the reference signal uses a conventional reference signal in other time slots except the last time slot. The transmission structure, in the last time slot, other SC-FDMA symbols except the last SC-FDMA symbol, uses an extended reference signal transmission structure.

The base station according to claim 11, wherein the data symbol is spread by a predetermined spreading sequence and then mapped to the truncated uplink control channel according to a preset resource mapping structure together with a reference signal. Each of the SC-FDMA symbols is specifically: determining, according to the resource mapping structure set by the setting module, the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and in a preset group or Selecting a corresponding spreading sequence from the plurality of sets of spreading sequences to determine that the data symbol needs to be mapped The location of the SC-FDMA symbol;

Wherein, if the number of SC-FDMA symbols to which each data symbol needs to be mapped is the same, each data symbol selects the same spreading sequence, and if the number of SC-FDMA symbols to which each data symbol needs to be mapped is different, each data symbol is selected. Different spreading sequences; if the number of SC-FDMA symbols that the same data symbol needs to be mapped in different time slots is different, the data symbols select different spreading sequences in different time slots, if the same The number of SC-FDMA symbols to which the data symbols need to be mapped in different time slots is the same, and the data symbols select the same spreading sequence in different time slots.

The base station according to claim 14, wherein the acquiring module is specifically configured to:

When the truncated uplink control channel carries the uplink control information corresponding to the one or more terminal devices by using all the time slots, the acquiring module passes the truncated according to the resource mapping structure set by the setting module. And transmitting the content carried in each SC-FDMA symbol of the uplink control information in all time slots of the uplink control channel, and acquiring uplink control information corresponding to the terminal device;

When the truncated uplink control channel repeatedly carries the uplink control information corresponding to the one or more terminal devices by using the time slot, the acquiring module passes the truncation according to the resource mapping structure set by the setting module. The content carried in each SC-FDMA symbol of the uplink control information is transmitted in one slot of the uplink control channel, and the uplink control information corresponding to the terminal device is obtained.

The "test signal" is mapped to each SC-FDMA symbol on the truncated uplink control channel according to a preset resource mapping structure; The terminal device sends the truncated uplink control channel to the base station, so that the base station acquires the content carried in each SC-FDMA symbol that transmits uplink control information in the truncated uplink control channel. The uplink control information corresponding to the terminal device.

The method according to claim 16, wherein before the sending, by the terminal device, the truncated uplink control channel to the base station, the method further includes:

Receiving, by the base station, whether the terminal device is allowed to use the truncated uplink control channel to simultaneously transmit an indication message of the channel sounding reference signal and the uplink control information;

If the terminal device receives an indication message that allows the use of the truncated uplink control channel to simultaneously transmit the channel sounding reference signal and the uplink control information, the terminal device is always used in an uplink subframe in which the system configures the channel sounding reference signal to be transmitted. The truncated uplink control channel transmits uplink control signaling, and when the channel sounding reference signal needs to be transmitted, the terminal device transmits the channel sounding reference signal on the last SC-FDMA symbol in the uplink subframe.

The method of claim 16, wherein the truncated uplink control channel specifically includes:

The method according to claim 18, wherein when the truncated uplink control channel includes multiple time slots, one or more SC-FDMA symbols in each time slot transmit a reference signal, and finally The last SC-FDMA symbol in one slot is reserved for the channel sounding reference signal, and the remaining SC-FDMA symbols transmit the uplink control information, and the method further includes: Transmitting uplink control information in each time slot in the truncated uplink control channel

SC-FDMA symbols are located in the same frequency band; or,

The method according to claim 18, wherein when the truncated uplink control channel includes multiple time slots, one or more SC-FDMA symbols in each time slot transmit a reference signal, and finally The last SC-FDMA symbol in one slot is reserved for the channel sounding reference signal, and the remaining SC-FDMA symbols transmit the uplink control information, and the method further includes:

The content of the uplink control information transmitted by the SC-FDMA symbol transmitting the uplink control information except the last SC-FDMA symbol in the last slot included in the truncated uplink control channel, and other time slots The content of the uplink control information transmitted by the SC-FDMA symbol transmitting the uplink control information other than the last SC-FDMA symbol is the same; or

The method according to claim 16, wherein the terminal device maps the uplink control signal spread by the preset spreading sequence to the truncated signal according to a preset resource mapping structure together with the reference signal. Among the SC-FDMA symbols on the uplink control channel, specifically:

Determining, according to the preset resource mapping structure, the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and selecting corresponding extensions in a preset one or more sets of spreading sequences A frequency sequence that determines the location of the SC-FDMA symbol to which the data symbol needs to be mapped.

The method according to claim 21, wherein the terminal device determines, according to the preset resource mapping structure, the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and One or more sets of spreading sequences Selecting a corresponding spreading sequence to determine the location of the SC-FDMA symbol to which the data symbol needs to be mapped, including:

The preset resource mapping structure of the terminal device is different from each other in all time slots included in the truncated uplink control channel; or

The terminal device has the same resource mapping structure in the two or more time slots included in the truncated uplink control channel; or

In the conventional CP structure, in other time slots except the last time slot, the terminal device uses the resource mapping structure of the regular CP, and in the last time slot, the terminal device pairs the last SC-FDMA symbol. The other SC-FDMA symbols use the resource mapping structure of the extended CP.

The method according to claim 22, wherein the terminal device determines, according to the preset resource mapping structure, the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and The corresponding spreading sequence is selected from one or more sets of spreading sequences, including:

If the number of SC-FDMA symbols to which each data symbol needs to be mapped is the same, the terminal device selects a spreading sequence of the same length for each data symbol, and if the number of SC-FDMA symbols to which each data symbol needs to be mapped is different, The terminal device selects a spreading sequence of different lengths for each data symbol;

If the number of SC-FDMA symbols that the same data symbol needs to be mapped in different time slots is different, the terminal device selects different lengths of spreading sequences in different time slots for the data symbols, if the same one The number of SC-FDMA symbols to which the data symbols need to be mapped in different time slots is the same, and the terminal device selects a spreading sequence of the same length in different time slots for the data symbols.

When the truncated uplink control channel carries the uplink control information corresponding to the terminal device through all time slots, the terminal device will spread the frequency after the preset spreading sequence The uplink control signal is mapped together with the reference signal to each SC-FDMA symbol in all time slots on the truncated uplink control channel according to a preset resource mapping structure;

When the truncated uplink control channel repeatedly carries the uplink control information corresponding to the terminal device by using each time slot, the terminal device sends the uplink control signal that is spread by the preset spreading sequence together with the reference signal. Mapping to each SC-FDMA symbol in a slot on the truncated uplink control channel according to a preset resource mapping structure.

A terminal device, which is characterized in that:

a setting module, configured to set an information carrying policy and a resource mapping structure;

a dividing module, configured to divide uplink control information corresponding to the terminal device into one or more data symbols;

The terminal device according to claim 25, further comprising: a receiving module, configured to receive, by the base station, whether the terminal device is allowed to use the truncated uplink control channel to simultaneously transmit a channel sounding reference signal and uplink control Indication message of information;

If the receiving module receives an indication message that allows the use of the truncated uplink control channel to simultaneously transmit the channel sounding reference signal and the uplink control information, the transmitting module always uses the uplink subframe of the system configured to transmit the channel sounding reference signal. The truncated uplink control channel transmits uplink control signaling, and when the channel sounding reference signal needs to be transmitted, the transmitting module transmits the channel sounding reference signal on the last SC-FDMA symbol in the uplink subframe.

The terminal device according to claim 25, wherein said truncated The uplink control channel specifically includes:

The terminal device according to claim 27, wherein when the truncated uplink control channel includes multiple time slots, one or more SC-FDMA symbols in each time slot transmit a reference signal, The last SC-FDMA symbol in the last time slot is reserved for the channel sounding reference signal, and the remaining SC-FDMA symbols in each time slot transmit uplink control information, which specifically includes:

The content of the uplink control information transmitted by the SC-FDMA symbol transmitting the uplink control information except for the last SC-FDMA symbol in the last slot in each slot included in the truncated uplink control channel, and The content of the uplink control information transmitted by the SC-FDMA symbol transmitting the uplink control information except the last SC-FDMA symbol in the other time slots is the same, or the repeated transmission of each time slot included in the truncated uplink control channel is the same Uplink control information, or content of uplink control information transmitted by each time slot included in the truncated uplink control channel is different; and/or,

The resource mapping structures set by the setting module are different from each other, or two or more time slots included in the truncated uplink control channel, in all time slots included in the truncated uplink control channel. The resource mapping structure set by the setting module is the same, or in a regular CP structure, in other time slots except the last time slot, the setting mode The block setting uses the resource mapping structure of the regular CP. In the last slot, except for the other SC-FDMA symbols other than the last SC-FDMA symbol, the setting module sets the resource mapping structure using the extended CP.

The terminal device according to claim 25, wherein the allocation module is specifically configured to:

Determining, according to the resource mapping structure set by the setting module, the number and location of SC-FDMA symbols to which the data symbols need to be mapped, and selecting corresponding ones in a preset one or more sets of spreading sequences a spreading sequence that determines the location of the SC-FDMA symbol to which the data symbol needs to be mapped;

Wherein, if the number of SC-FDMA symbols to which each data symbol needs to be mapped is the same, the allocation module selects a spreading sequence of the same length for each data symbol, if the number of SC-FDMA symbols to which each data symbol needs to be mapped is different. And the allocating module selects a spreading sequence of different lengths for each data symbol;

If the number of SC-FDMA symbols that the same data symbol needs to be mapped in different time slots is different, the allocation module selects different lengths of spreading sequences for the data symbols in different time slots, if the same one The number of SC-FDMA symbols to which the data symbols need to be mapped in different time slots is the same, and the allocation module selects the same length spreading sequence for the data symbols in different time slots.

When the information carrying policy set by the setting module is that the truncated uplink control channel carries the uplink control information corresponding to the terminal device through all time slots, the allocating module expands the preset spreading sequence. The uplink control signal after the frequency is mapped together with the reference signal to each SC-FDMA symbol in all time slots on the truncated uplink control channel according to the resource mapping structure set by the setting module;

When the information carrying policy set by the setting module is that the truncated uplink control channel repeatedly carries the uplink control information corresponding to the terminal device by using each time slot, the allocation module will adopt a preset spreading sequence. The spread-up uplink control signal is mapped to the truncated uplink control according to the resource mapping structure set by the setting module together with the reference signal In each SC-FDMA symbol in one slot of the channel.