WO2013063967A1 - Information transmission method and device in multi-antenna port scenario - Google Patents

Abstract

Disclosed are an information transmission method and device in a multi-antenna port scenario. By applying the technical solution in the embodiments of the present invention, for terminal equipment with multi-antenna port transmission, a pre-coding vector of an uplink control channel at a multi-antenna port is obtained according to the configuration information sent by a base station, and the corresponding data after being pre-coded by the pre-coding vector is sent using the same PUCCH resource at each antenna port, and therefore, by configuring a pre-coding vector applied to a multi-antenna port in each timeslot rationally, the performance gain of the PUCCH transmit diversity is ensured on the basis of reducing the overhead of the PUCCH resource as far as possible.

Description

 The present invention claims to be submitted to the Chinese Patent Office on November 2, 2011, the application number is 201110342209.2, and the Chinese patent entitled "Information Transmission Method and Apparatus in Multi-antenna Port Scene" Priority of the application, the entire contents of which are incorporated herein by reference. Technical field

 The present invention relates to the field of communications technologies, and in particular, to a method and device for transmitting information in a multi-antenna port scenario. Background technique

 In LTE-A (Long Term Evolution Advanced) Rel (Release, Release) -10, PUCCH (Physical Uplink Control Channel) format 3 can be used for transmission of uplink control information.

 As shown in FIG. 1 and FIG. 2, it is a schematic diagram of a transmission structure of a PUCCH format 3 in the prior art. FIG. 1 is a schematic diagram of a PUCCH format 3 transmission structure in a conventional CP (Normal Cyclic Prefix) in the prior art.

3 Schematic diagram of the transmission structure. D1 and D2 are bits of the useful information bits after bit scrambling, channel coding and modulation, wherein the useful information bits may include uplink control information bits, such as ACK ( ACKnowledgment, positive acknowledgment) / NACK

(Non- ACKnowledgment, negative acknowledgment) Feedback bit, SR (Scheduling Request) bit. RS is a pilot symbol, and the pilot is transmitted on the pilot symbol.

( Reference Signal, RS ), where the specific RS is defined by 3GPP TS36.211.

[wl, w2, .., , w5] are time-domain orthogonal sequences, and the specific [wl, w2, .., w5] is defined by 3GPP TS36.211. In particular, when the high-level signaling configuration supports SRS (Sounding Reference Signal) and uplink control information (such as ACK/NACK and/or SR) In the case of simultaneous transmission, a shortened PUCCH format 3 transmission structure is adopted, that is, the last symbol in FIG. 1 and FIG. 2 does not transmit uplink control information, and is reserved for transmitting the SRS.

 PUCCH format 3 supports two transmission modes: single antenna port and multiple antenna port (2 antenna port). If the user equipment (the user equipment, that is, the terminal equipment) is configured to use the single antenna port to transmit the PUCCH format 3, the UE determines the resource sequence number of the PUCCH format 3 according to the indication of the base station, and the resource sequence number determines the PRB of the PUCCH format 3 to be transmitted. (Physical Resource Block) location, specific time domain orthogonal sequence [wl, w2, w5], and specific pilot signals. If the UE is configured to use the multi-antenna port to transmit the PUCCH format 3, the UE uses the Spatial Orthogonal Resource Transmit Diversity (SORTD) scheme to transmit the PUCCH format 3, that is, according to the indication of the base station, the UE determines for each antenna port. The resource sequence number of a PUCCH format 3, the PRB location of the PUCCH format 3, the specific time domain orthogonal sequence [wl, w2, ..., w5], and the specific pilot are determined by the corresponding resource sequence number for each antenna port. signal. The antenna port here refers to the antenna port of the PUCCH. The PUCCH format 3 of each antenna port is orthogonal in the frequency domain or/and the time domain, for example, the PRB location of the PUCCH format 3 resource corresponding to different antenna ports is different, or the time domain of the PUCCH format 3 resource corresponding to different antenna ports. The orthogonal sequences are different.

 Since PUCCH format 3 supports 5 time-domain orthogonal sequences, for PUCCH format 3 of single-antenna port transmission, up to 5 UEs can be multiplexed in one PRB. In particular, for the shortened PUCCH format 3, only the time domain orthogonal sequence of length 4 is supported. Therefore, for PUCCH format 3 of single antenna port transmission, only 4 UEs can be multiplexed in one PRB. When PUCCH format 3 uses SORTD transmission, the PUCCH format 3 resource to be used is twice as large as that of the single antenna port. In this case, only two UEs can be multiplexed and transmitted in one PRB, which greatly increases the system overhead.

In LTE-A Rel-10, PUCCH format lb with channel selection (PUCCH format lb with channel selection) can be used to transmit up to 4 bits of ACK/NACK feedback information, and 2/3/4 bit feedback information needs to be transmitted 2 respectively. /3/4 PUCCH Format lb resource. The UE queries the corresponding ACK/NACK mapping table according to the ACK/NACK state to be fed back, selects one of the plurality of candidate PUCCH format lb resources, and is in QPSK (Quadature Phase-Shift Keying) One of the four constellation points is selected to transmit the selected constellation point on the selected PUCCH format lb resource, and the specific transmission structure is the same as PUCCH format lb, as shown in FIG. 3 and FIG. 4. 3 is a schematic diagram of a transmission structure in a PUCCH format lb, normal CP in the prior art, and FIG. 4 is a schematic diagram of a transmission structure in a PUCCH format lb, extended CP in the prior art. In particular, when the high-level signaling configuration supports SRS and uplink control information (such as ACK/NACK and/or SR) transmission simultaneously, the shortened PUCCH format lb transmission structure is adopted, that is, the last symbol in FIG. 3 and FIG. 4 does not transmit uplink. Control information, reserved for transmission of SRS. In Rd-10, PUCCH format lb with channel selection does not support multi-port transmission mode, mainly considering that if SORTD is used, 2/3/4-bit ACK/NACK feedback information is transmitted, and 4/6/8 PUCCH resources are required respectively. The resource overhead is too large.

 From the perspective of system coverage and transmission power. In Rd-11, it is necessary to further study the multi-port transmission scheme of PUCCH format lb with channel selection with low resource overhead to improve transmission performance and expand system coverage.

 On the other hand, in the discussion of the PUCCH multi-antenna port transmission scheme in the LTE-A Rel-10 P section, a PVS (Precoding Vector Switching) scheme is proposed. In this solution, multiple antenna ports are transmitted corresponding to the same PUCCH resource, and the first slot (time slot) is precoded using a precoding vector [+1 +1] between two antenna ports, and the second slot is in the second slot. The precoding is performed between the two antenna ports using the precoding vector [+1 -1] to obtain the diversity gain. The angle of reception from the base station is equivalent to the single-port transmission mode, so the PUCCH resource overhead is not increased. However, the precoding vector used by each slot in the method is fixed and cannot adapt well to channel changes, so the transmit diversity gain is worse than the SORTD scheme.

 In carrying out the process of the present invention, the inventors have found that at least the following problems exist in the prior art:

Multi-antenna port transmission scheme of PUCCH format 3 in the prior art The resource demand of SORTD and PUCCH format 3 is twice that of single-antenna port transmission, and the resource overhead is high. In addition, although the PVS method has a small resource overhead, the fixed precoding vector method has poor flexibility and cannot adapt to channel changes well, and the diversity gain needs to be improved. Summary of the invention

 The embodiment of the invention provides an information transmission method and device in a multi-antenna port scenario, which solves the prior art solution in the transmission process in a multi-antenna port scenario.

The PUCCH resource overhead is too large.

 To achieve the above objective, an embodiment of the present invention provides an information transmission method in a multi-antenna port scenario, including at least the following steps:

 Determining, by the terminal device, uplink control information that needs to be sent, and determining an uplink control channel resource that carries the uplink control information;

 Determining, by the terminal device, a precoding vector used by the terminal device to transmit on a multi-antenna port according to configuration information sent by the base station;

 And the terminal device performs precoding processing on the uplink control information between the multiple antenna ports according to the precoding vector, and obtains uplink control information after precoding processing corresponding to each antenna port;

 The terminal device uses the same uplink control channel resource in each antenna port to send the pre-coded uplink control information corresponding to the corresponding antenna port, where the uplink control channel resource is specifically determined by the terminal device. The uplink control channel resource that carries the uplink control information. On the other hand, the embodiment of the present invention further provides a terminal device, including: a first determining module, configured to determine uplink control information that needs to be sent, and determine an uplink control channel resource that carries the uplink control information;

 a second determining module, configured to determine, according to configuration information sent by the base station, a precoding vector used by the terminal device when transmitting by using multiple antenna ports;

a processing module, configured to perform, according to the precoding vector determined by the second determining module The uplink control information determined by the first determining module is pre-coded between the plurality of antenna ports to obtain uplink control information after precoding processing corresponding to each antenna port; and the sending module is configured to use the same in each antenna port The uplink control channel resource is sent by the corresponding antenna port, and the uplink control channel resource is pre-coded by the processing module, where the uplink control channel resource is specifically the bearer determined by the first determining module. The uplink control channel resource of the uplink control information. On the other hand, the embodiment of the present invention further provides an information transmission method in a multi-antenna port scenario, which includes at least the following steps:

 Determining, by the base station, a precoding vector used by the terminal device to transmit the multi-antenna port; the base station transmitting configuration information for indicating the precoding vector to the terminal device;

 Determining, by the base station, an uplink control channel resource used by the terminal device to send uplink control information;

 The base station receives, on the uplink control channel resource, uplink control information after precoding processing sent by the terminal device. On the other hand, the embodiment of the present invention further provides a base station, where the method further includes: a determining module, configured to determine a precoding vector used by the terminal device when transmitting the multi-antenna port, and determine that the terminal device sends the uplink control information. Uplink control channel resources used;

 a sending module, configured to send, to the terminal device, configuration information used to indicate a precoding vector determined by the determining module;

 The receiving module is configured to receive, according to the uplink control channel resource determined by the determining module, the uplink control information after the precoding process sent by the terminal device.

 Compared with the prior art, the technical solution proposed by the embodiment of the present invention has the following advantages:

By applying the technical solution of the embodiment of the present invention, the terminal device transmitting the multi-antenna port obtains the pre-control of the uplink control channel in the multi-antenna port according to the configuration information sent by the base station. Encoding the vector, and transmitting the corresponding data pre-coded by the pre-coding vector using the same PUCCH resource at each antenna port, thereby, by reasonably configuring the precoding vector applied to the multi-antenna port in each time slot, On the basis of reducing the PUCCH resource overhead as much as possible, the performance gain of PUCCH transmit diversity is guaranteed. DRAWINGS

 1 is a schematic diagram of a PUCCH format 3 transmission structure in a conventional CP in the prior art;

 2 is a schematic diagram of a PUCCH format 3 transmission structure in an extended CP in the prior art;

 3 is a schematic diagram of a transmission structure in a PUCCH format lb, normal CP in the prior art;

 4 is a schematic diagram of a transmission structure in a PUCCH format lb, extended CP in the prior art;

 FIG. 5 is a schematic flowchart of a method for transmitting information in a multi-antenna port scenario on a terminal device side according to an embodiment of the present disclosure;

 6 is a schematic flowchart of a method for transmitting information in a multi-antenna port scenario on a base station side according to an embodiment of the present invention;

 FIG. 7 is a schematic flowchart of a method for transmitting information in a specific multi-antenna port application scenario according to an embodiment of the present invention;

 FIG. 8 is a schematic flowchart of a method for transmitting information in a specific multi-antenna port application scenario according to an embodiment of the present invention;

 FIG. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present invention; FIG. 10 is a schematic structural diagram of a base station according to an embodiment of the present invention. detailed description

As described in the background art, in the LTE-A system, PUCCH format 3 is introduced. PUCCH format 3 supports multi-port transmission mode and adopts SORTD technology. SORTD Each antenna port is required to use orthogonal PUCCH resources. Therefore, PUCCH resources of twice the single-port transmission mode are required, and the PUCCH resource overhead is large.

 In order to overcome such a drawback, in Rd-11, a PUCCH transmission diversity method with a low PUCCH resource overhead and a considerable performance gain relative to a single antenna port transmission needs to be further studied. The embodiment of the present invention provides an information transmission method in a multi-antenna port scenario, which is applied to a precoding vector of a multi-antenna port by a reasonable configuration, and ensures the performance of PUCCH transmit diversity on the basis of minimizing the PUCCH resource overhead. Gain.

 FIG. 5 is a schematic flowchart of a method for transmitting information in a multi-antenna port scenario according to an embodiment of the present disclosure, where the method specifically includes the following steps:

 Step S501: The terminal device determines uplink control information that needs to be sent, and determines an uplink control channel resource that carries the uplink control information.

 Step S502: The terminal device determines, according to configuration information sent by the base station, a precoding vector used by the terminal device to transmit in a multi-antenna port.

 There are also corresponding differences in the processing rules of this step for different application scenarios. Specifically, the following two cases can be included:

 Case 1: The terminal device receives the configuration information sent by the base station by using the high layer signaling, and determines the precoding used by the multi-antenna port according to the bit field used to indicate the precoding vector in the configuration information. vector.

 In this case, the base station directly configures the precoding vector for the terminal device by using the high layer signaling, and the terminal device directly determines the corresponding precoding vector according to the high layer signaling, until the precoding vector that the base station reconfigures through the high layer signaling is received, so that The configuration is more stable, reducing the resources required to frequently change the configuration.

 In this way, the precoding vector applied by the terminal device over a period of time can be semi-statically configured.

 Of course, the terminal device determines the specific form of the precoding vector, which is determined according to the bit field content used to indicate the precoding vector in the configuration information transmitted by the higher layer signaling.

In this case, the high layer signaling specifically includes RRC (Radio Resource Control) signaling and/or MAC (Media Access Control, media). Body access control) signaling.

 In the second case, the terminal device receives the configuration information sent by the base station by using a PDCCH (Physical Downlink Control Channel), and determines that the antenna is in multiple antennas according to the bit field in the PDCCH for indicating the precoding vector. The precoding vector used when the port is transmitted.

 Specifically, the PDCCH indicated in this case includes a PDCCH corresponding to a PDSCH (Physical Downlink Shared Channel) transmission, and a PDCCH indicating downlink SPS resource release. The PDCCH corresponding to the PDSCH transmission further includes a PDCCH for dynamically scheduling PDSCH transmission and a PDCCH for activating SPS (Semi-Persistent Scheduling) PDSCH. In this case, the base station configures a precoding vector for the terminal device through the PDCCH, and the terminal device The precoding vector applied by itself in this transmission is determined according to the PDCCH.

 In this way, the precoding vector applied by the terminal device in the current transmission can be dynamically configured. This configuration mode is more flexible than the semi-static configuration mode in the case 1.

 The determining, by the terminal device, the specific format of the precoding vector is determined according to the bit field content used to indicate the precoding vector in the configuration information transmitted by the PDCCH.

 In the actual application scenario, the technical solution of the case 1 described above or the technical solution of the case 2 described above may be determined according to actual needs, and such changes do not affect the scope of protection of the present invention.

 Certainly, in a specific application scenario, in the case of the technical solution proposed in the second case, the PDCCH cannot be normally received due to the delay, the transmission error, or the receiving error in the specific transmission process, and further, the embodiment of the present invention further The corresponding solution was proposed.

 When the terminal device receives the PDCCH that is sent by the base station and includes the bit field indicating the precoding vector, the terminal device may determine, according to the bit field of the indication precoding vector, that the terminal device transmits the multi-antenna port. The precoding vector used.

And when the terminal device does not receive the PDCCH including the bit field for indicating the precoding vector, the terminal device determines the pre-programmed configuration of the base station last time. The code vector or the fixed precoding vector preset by the base station through the high layer signaling is a precoding vector used by the base station for transmitting in the multi-antenna port.

 Similar to the foregoing case 1, the high layer signaling specifically includes RRC signaling and/or MAC signaling.

 Further, according to the difference of the corresponding transmission scenario, the terminal device may also determine that the content included in the PDCCH has the following differences:

 (1) When the PDCCH is transmitted in the dedicated search space of the terminal device, the terminal device determines that the DCI (Downlink Control Information) format used by the PDCCH includes a precoding vector for indicating Bit field.

 In a practical application, the specific form of the bit field used to indicate the precoding vector may be a newly added bit field in the DCI format used by the PDCCH, or may be reused in the original bit field in the DCI format used by the PDCCH. Changes in specific form do not affect the scope of protection of the present invention.

 On the other hand, if the terminal device receives a plurality of PDCCHs including a bit field indicating a precoding vector (ie, a plurality of PDCCHs included in a feedback window that include a bit field indicating a precoding vector, The feedback window is a set of downlink subframes that need to perform ACK/NACK feedback in the same uplink subframe, and the terminal device should assume that the indication values of the bit fields included in the PDCCH for indicating the precoding vector are the same; If the indication value of the bit field used to indicate the precoding vector is different in the received multiple PDCCHs, the terminal device determines the reception error, or the base station has a scheduling error, may abandon the current transmission, or use the latest PDCCH. a precoding vector indicated by the indication value or a precoding vector indicated by an indication value in a group of PDCCHs having the largest number of PDCCHs having the same indication value, or a fixed precoding vector preconfigured using higher layer signaling;

 (2) When the PDCCH is transmitted in the common search space of the terminal device, the bit field of the precoding vector is shown.

And if the PDCCH does not include a bit field for indicating a precoding vector, naturally The processing of the scenario in which the foregoing terminal device receives the PDCCH of the bit field indicating the precoding vector sent by the base station cannot be applied, and the foregoing terminal device does not receive the content that is sent by the base station and is included for indicating Processing of a scene of a PDCCH of a bit field of a coding vector.

 Based on the foregoing description, it may be determined that, in this case, the description of the PDCCH that is sent by the base station and includes the bit field for indicating the precoding vector is not received, and the PDCCH may not be received. The PDCCH indicating the bit field of the precoding vector, or the base station transmitting the PDCCH including the bit field indicating the precoding vector but the terminal device loses the PDCCH, or the received base station does not include the indication for precoding The PDCCH of the bit field of the vector, in either case, may apply a processing scheme in which the foregoing terminal device does not receive a scenario of the PDCCH including the bit field indicating the precoding vector transmitted by the base station.

 It should be further noted that, in the case that the foregoing terminal device does not receive the PDCCH that is sent by the base station and includes a bit field for indicating a precoding vector, in particular, when the terminal device receives an SPS that does not have a corresponding PDCCH. The PDSCH, and not receiving any PDCCH including a bit field indicating a precoding vector, the terminal device may further determine a bit field included in the PDCCH for activating the SPS PDSCH for indicating a precoding vector The indicated precoding vector is the precoding vector used by itself when transmitting on multiple antenna ports.

 The foregoing description describes the specific manner in which the terminal device determines the precoding vector. Further, in order to adapt to the scenario of the multi-antenna port, the precoding vector determined by the terminal device is specifically configured based on each time slot, where each Each element included in the precoding vector corresponds to one of the antenna ports used in the corresponding time slot.

 The determination of the specific precoding vector is done by the base station.

 Based on the configuration, the specific processing procedure in this step is that the terminal device determines a precoding vector corresponding to each time slot according to the configuration information sent by the base station.

The precoding vector corresponding to each time slot is applied to precoding processing of transmission information in the time slot between multiple antenna ports, and precoding vectors corresponding to multiple time slots are sent through the configuration information sent by the base station. Used to indicate the bit field of the precoding vector to be independent Instructions or joint instructions.

 Correspondingly, the specific method for using different indication manners is as follows: Method 1. The precoding vector corresponding to the multiple time slots is independent of the bit field used to indicate the precoding vector in the configuration information sent by the base station. Instructions.

 In the scenario in which the method is applied, the bit field used to indicate the precoding vector is

The AxK bit includes _K= “l.g ₂ N] bit information for indicating the precoding vector corresponding to each time slot respectively, where A is the number of time slots included in one transmission, and N is each time slot. The number of different precoding vectors used.

 In practical applications, A=2 can be set better, and the corresponding correspondence is as shown in Table 1. Table 1 indicates the different states of the bit field of the precoding vector used in each slot.

 Correspondence with the indicated precoding vector

 It should be noted that, according to the information shown in Table 1 above, in practical applications, K=l can be selected, but this is only a specific example, and the correspondence between Κ and other values is not excluded.

 Method 2: The multiple time slot corresponding precoding vector is jointly indicated by a bit field used to indicate a precoding vector in the configuration information sent by the base station.

In the scenario in which such a method is applied, the bit field used to indicate the precoding vector is included! ^= " ^lQg 2 ^M , bit information, one of the M combinations indicating the precoding vectors of a plurality of slots.

 Where M is the number of different combinations of precoding vectors of multiple slots.

 In practical applications, the corresponding correspondence is shown in Table 2.

 Table 2 indicates the different states of the bit field of the precoding vector

Correspondence between different combinations of precoding vectors used in multiple time slots Indicates the different states of the precoding vector of the second time slot of the precoding vector of the first slot of the L-bit signal of the precoding vector

 00 [+1 +1] [+1 +1]

 01 [+1 +1] [+1 -1]

 10 [+1 -1] [+1 +1]

 11 [+1 -1] [+1 -1] It should be noted that, according to the information shown in Table 2 above, in practical applications, L=2 can be selected, and 2 bits indicate different states of information. They are used to indicate 4 precoding vector combinations, respectively, but this is only a specific example, and does not exclude the correspondence when L is another value.

 Step S503: The terminal device performs precoding processing on the uplink control information between multiple antenna ports according to the precoding vector, and obtains uplink control information after precoding processing corresponding to each antenna port.

 Based on the above description, the terminal device performs precoding processing between a plurality of antenna ports using data and pilots in each time slot using the same precoding vector, the precoding vector being the terminal device by the The precoding vector corresponding to the time slot determined by the configuration information sent by the base station.

 Step S504: The terminal device uses the same uplink control channel resource in each antenna port, and sends the uplink control information after the precoding process corresponding to the corresponding antenna port.

 The uplink control channel resource is specifically an uplink control channel resource that is determined by the terminal device and that carries the uplink control information. The above description describes the specific processing on the terminal device side. Correspondingly, on the base station side, the specific processing procedure is as shown in FIG. 6, and includes the following steps:

 Step S601: The base station determines a precoding vector used by the terminal device when transmitting the multi-antenna port.

Step S602, the base station sends, to the terminal device, the indication for the precoding. Vector configuration information.

 Corresponding to the foregoing step S502, the processing of this step also includes two cases: (1) the base station sends configuration information indicating the precoding vector to the terminal device by using high layer signaling, so that the terminal device Determining a precoding vector used by the multi-antenna port for transmission according to a bit field in the configuration information for indicating a precoding vector.

 (2) the base station sends, by using a PDCCH, configuration information for indicating a precoding vector to the terminal device, so that the terminal device determines that it is in a multi-antenna port according to a bit field indicating a precoding vector in the PDCCH. The precoding vector used when transmitting.

 For the definition of specific signaling and information forms in such two cases, refer to the description in the foregoing step S502, and the description will not be repeated here.

 Step S603: The base station determines an uplink control channel resource used by the terminal device to send uplink control information.

 Step S604: The base station receives, on the uplink control channel resource, uplink control information after precoding processing sent by the terminal device. Further, the technical solutions proposed in the embodiments of the present invention need to be specifically described as follows: the processing procedure on the terminal device side or the processing procedure on the base station side.

 (1) The PUCCH in the embodiment of the present invention may carry ACK/NACK feedback information, and may also carry other uplink control information, such as SR, Channel State Information (Channel State Information), and the like.

 The periodic CSI includes a periodic CQI (Channel Quality Indicator) information, a PMI (Pre-coding Matrix Indicator) information, an RI ( Rank Indication) information, and a PTI (Precoder Type Indication). Encoding type indication) information.

(2) The technical solution proposed by the embodiment of the present invention can be used for multi-antenna port transmission in any uplink control channel format, including but not limited to PUCCH format 1/la/lb. PUCCH format 3, PUCCH format 2/2a/2b, and PUCCH format lb with channel selection.

 (3) The technical solutions proposed by the embodiments of the present invention are equally applicable to FDD (Frequency Division Duplexing) and TDD (Time Division Duplexing) systems.

 (4) The antenna port in the technical solution proposed by the embodiment of the present invention refers to an antenna port defined to the PUCCH.

 Compared with the prior art, the technical solution proposed by the embodiment of the present invention has the following advantages:

 By applying the technical solution of the embodiment of the present invention, the terminal device that transmits the multi-antenna port obtains the precoding vector of the uplink control channel in the multi-antenna port according to the configuration information sent by the base station, and sends the same PUCCH resource in each antenna port. Precoding the corresponding data by using the precoding vector, thereby ensuring PUCCH transmit diversity on the basis of minimizing the PUCCH resource overhead by reasonably configuring the precoding vector applied to the multi-antenna port in each slot. Performance gain. The technical solutions proposed in the embodiments of the present invention are described below in conjunction with specific application scenarios.

 The embodiment of the invention provides a precoding vector configurable PUCCH multi-antenna port transmission method. The main technical idea is that, for a terminal device that transmits a multi-antenna port, according to the configuration information sent by the base station, a precoding vector of the uplink control channel at the multi-antenna port is obtained, and the data to be transmitted is pre-coded according to the precoding vector to obtain Each antenna port corresponds to transmission data, and the pre-coded corresponding data is sent at each antenna port, where multiple antenna ports use the same PUCCH resource.

 The corresponding technical solutions are described below through specific embodiments.

 Embodiment 1 Assume that the UE uses PUCCH format 3 to transmit uplink control information, and adopts a 2-antenna port transmission mode.

A specific process is shown in FIG. 7 , which is a schematic flowchart of a method for transmitting information in a specific multi-antenna port application scenario, which includes the following steps. Step:

 Step S701: The base station determines, according to a precoding vector set corresponding to each time slot (for example, [+1 +1], [+1 -1]), a precoding vector as a precoding vector used for the multi-antenna port transmission of the time slot. And transmitting the UE to the UE through the 2-bit precoding vector indication field in the high layer signaling or the PDCCH signaling.

 Based on the foregoing description, for the method of using the independent indication, the specific processing scheme in this step is that the base station indicates the precoding vector corresponding to the first time slot by using the first bit in the 2-bit precoding indication field, and the second bit indicates the first bit. A precoding vector corresponding to two time slots.

 For example, the base station determines that the precoding vector of the first slot is [+1 +1]. According to Table 1, the corresponding "0" indicates the domain state, and the precoding vector of the second slot is [+1 -1]. According to Table 1, corresponding to the "Γ indication domain status, the base station transmits a 2-bit indication field to "0 1".

 For the method of using the joint indication, the specific processing scheme in this step is that the base station indicates a combination of precoding vectors corresponding to the two slots by using the bit indication field.

 For example, the base station determines that the precoding vector of the first slot is [+1 +1], and the precoding vector of the second slot is [+1 -1]. According to Table 2, the base station sends a 2-bit indication field to "0 1".

 Step S702: The UE receives downlink data, obtains corresponding uplink control information, and advances.

 (3)

One step is to determine a PUCCH format 3 resource ^npuccH .

 The specific uplink control information may be specifically ACK/NACK information.

 (3)

On the other hand, the foregoing PUCCH format 3 resource ^npuccH may be specifically an RRC pre-configured PUCCH format3 resource determined according to an indication of an ARI (ACK/NACK Resource Indicator) field in the PDCCH, where ARI The domain is specifically a TPC (Transmit Power Control) field in the PDCCH with a DAK Downlink Assignment Index (PDC) on the PCC (Primary Component Carrier), or a Secondary Component Carrier (SCC). Reuse of the TPC domain in the PDCCH of the carrier).

Step S703: The UE receives, by using the high layer signaling or the PDCCH signaling, the 2-bit information that is sent by the base station and carries the precoding vector indicating each slot is “0 1”. Corresponding to the foregoing method using independent indication, according to Table 1, it is determined that the precoding vector of the first slot indicated by the first bit "0" is [+1 +1], and the second indicated by the second bit "1" is determined. The precoding vector of each slot is [+1-1].

 Corresponding to the foregoing method using the joint indication, according to Table 2, it is determined that the combined state indicated by "01" is the precoding vector of the first slot is [+1 +1], and the precoding vector of the second slot is [ +1 -1].

 Step S704: The UE passes the same uplink control channel in each antenna port.

(3)

The source n _PUCCH transmits the uplink control information after the precoding processing corresponding to each antenna port.

Specifically, the UE according to the PUCCH format 3 transmission scheme (as shown in FIG. 1 and FIG. 2, which also includes the last symbol used to transmit the shortened PUCCH format 3 of the SRS) and the time domain orthogonal sequence determined by the channel resource n^ ^CH , And a pilot sequence, which obtains modulation symbols Q (including data symbols and pilot symbols) transmitted by each RE (Resource Element) in the subframe.

 For each RE in the first slot (including data symbols and pilot symbols), precoding is performed using a precoding vector W=[+l +1], for each RE in the second slot Corresponding (3⁄4 (including data symbols and pilot symbols), precoding using a precoding vector W=[+l-1], and obtaining a transmission signal Yi=QiW of a plurality of corresponding antenna ports on the RE after precoding, Where Yi is a vector of IxN, each element in the vector represents a transmission signal of a corresponding antenna port on the RE, and N is an antenna port number. In a specific application, N=2 may be preferably determined, but it is not excluded. The number of other antenna ports, at which time the precoding vector W should be a vector of IxN.

 (3)

The UE sends, according to the PUCCH format 3 resource ^npuccH , the PRB position sent by the PUCCH format 3, the uplink control information that is precoded by using the precoding vector corresponding to the multi-antenna port, where each antenna port uses the same uplink control. Channel resources.

 (3)

Step S705: The base station determines a PUCCH format 3 resource ^npuccH , and receives pre-coded uplink control information sent by the UE on the resource.

 (3)

The above-mentioned PUCCH format 3 resource ^npuccH is a PUCCH format 3 resource that is configured by the base station and configured to the UE, and passes through the ARI domain in the PDCCH. Shown to the UE.

 Specifically, the ARI domain is specifically a TPC domain in a PDCCH with a DAI greater than 1 on the PCC or a reuse of a TPC domain in a PDCCH scheduling the SCC.

 It should be noted that, in the foregoing embodiment, if PUCCH format 3 is replaced with PUCCH format 1/la/lb or PUCCH format 2/2a/2b, the UE is different in PUCCH format when acquiring channel resources. 1/la/lb is obtained according to the minimum CCE (Control Channel Element) of the PDCCH, and the PUCCH format 2/2a/2b is obtained according to the pre-configuration of the high layer signaling. Embodiment 2: It is assumed that the UE uses the PUCCH format lb with channel selection to transmit 4-bit ACK/NACK feedback information, and adopts a 2-antenna port transmission mode.

 A specific process is shown in FIG. 8 , which is a schematic flowchart of a method for transmitting information in a specific multi-antenna port application scenario according to an embodiment of the present disclosure, which specifically includes the following steps:

 Step S801: The base station determines, according to the precoding vector set corresponding to each time slot, a precoding vector as a precoding vector used for the multi-antenna port transmission of the time slot, and uses a bit precoding vector in the high layer signaling or the PDCCH signaling. The indication domain is sent to the UE.

 Based on the foregoing description, for the method of using the independent indication, the specific processing scheme in this step is that the first bit in the base station bit indication field indicates the precoding vector corresponding to the first time slot, and the second bit indicates the second time. The precoding vector corresponding to the slot.

 For example, the base station determines that the precoding vector of the first slot is [+1 +1]. According to Table 1, the corresponding "0" indicates the domain state, and the precoding vector of the second slot is [+1 -1]. According to Table 1, corresponding to the "Γ indication field status, the base station transmits a 2-bit indication field to "0 1".

 For the method of using the joint indication, the specific processing scheme in this step is that the base station indicates a combination of precoding vectors corresponding to the two slots by using the bit indication field.

 For example, the base station determines that the precoding vector of the first slot is [+1 +1], and the precoding vector of the second slot is [+1 -1]. According to Table 2, the base station sends a 2-bit indication field to "0 1".

Step S802: The UE receives downlink data, acquires corresponding 4-bit ACK/NACK feedback information, and further determines one corresponding according to the ACK/NACK mapping table. The ACK/NACK modulation symbol and one candidate PUCCH format lb resource ⁿ ^ _CH serve as resources for transmitting ACK/NACK modulation symbols.

 For example, the UE may obtain the PUCCH format lb implicit resource according to the minimum CCE number of the PDCCH transmitted on the PCC received in the feedback window (that is, the downlink subframe set that needs to perform ACK/NACK feedback in the same uplink subframe), and/ Obtaining an RRC pre-configured PUCCH format lb semi-static resource according to an indication of an ARI domain (reuse of a TPC domain) in a PDCCH transmitted on the SCC, and/or obtaining a PUCCH format lb semi-static resource according to pre-configuration of higher layer signaling A total of up to 4 PUCCH format lb candidate resources are obtained, and one candidate PUCCH format lb resource is selected according to the ACK/NACK mapping table.

 Step S803: The UE receives, by using the high layer signaling or the PDCCH signaling, the 2-bit information that is sent by the base station and carries the precoding vector indicating each time slot is “0 1”.

 Corresponding to the foregoing method using independent indication, according to Table 1, it is determined that the precoding vector of the first slot indicated by the first bit "0" is [+1 +1], and the second indicated by the second bit "1" is determined. The precoding vector of each slot is [+1-1].

 Corresponding to the foregoing method using the joint indication, according to Table 2, it is determined that the combined state indicated by "01" is the precoding vector of the first slot is [+1 +1], and the precoding vector of the second slot is [ +1 -1].

Step S804: The UE transmits the uplink control information after the precoding processing corresponding to each antenna port by using the same uplink control channel resource n _CCH in each antenna port.

 The UE according to the PUCCH format lb transmission scheme (as shown in FIG. 3 and FIG. 4, which also includes the last symbol used to transmit the shortened PUCCH format lb of the SRS) and the channel resource orthogonal sequence determined by the channel resource n^cH And the frequency domain cyclic shift values of the data and pilots, resulting in modulation symbols (including data symbols and pilot symbols) transmitted by each RE in the subframe.

For each RE (Resource Element, resource element) corresponding to the first slot (including data symbols and pilot symbols), precoding is performed using a precoding vector W=[+l +1], for the second Corresponding to each RE in the slot (including data symbols and pilot symbols), precoding is performed by using a precoding vector W=[+l -1], and the RE is obtained after precoding. a corresponding signal of the plurality of antenna ports YFC^W, where is a vector of ΙχΝ, each element in the vector represents a transmission signal of a corresponding antenna port on the RE, and N is an antenna port number, in a specific application It is preferable to determine N=2, but the number of other antenna ports is not excluded, and the precoding vector W should be a vector of ΙχΝ.

The UE PUCCH format lb ^{n CH} resource is determined according to the position PRB transmitted on PUCCH format lb, the corresponding multi-antenna port transmission using uplink precoding vector after the pre-coding control information, wherein each antenna port uses the same uplink Control channel resources.

Step S805: The base station determines up to four PUCCH format lb candidate resources ⁿ ^ ^CCH , and detects ACK/NACK feedback information on the candidate resources according to the PUCCH format lb transmission scheme.

Specifically, the method for the base station to determine at most four PUCCH format lb candidate resources ⁿ ^ ^CCH includes:

 Obtaining a PUCCH format lb implicit resource according to a minimum CCE number of the PDCCH transmitted on the PCC in a feedback window (ie, a downlink subframe set that needs to perform ACK/NACK feedback in the same uplink subframe); and/or,

 Obtaining an RRC pre-configured PUCCH format lb semi-static resource according to an indication of an ARI field (reuse of a TPC domain) in a PDCCH transmitted on the SCC; and/or semi-statically configuring a PUCCH format lb to the UE according to pre-configuration of higher layer signaling Resources.

 Step S806, the base station determines a PUCCH format lb resource of the detected information and an ACK/NACK modulation symbol detected on the resource, and determines the detected PUCCH format lb resource and the detected ACK according to the ACK/NACK mapping table. ACK/NACK feedback information corresponding to the /NACK modulation symbol.

 In addition, in the above process, the base station may determine the best corresponding to each time slot by notifying the terminal to transmit pilot and/or data on multiple antenna ports of each time slot by using different precoding vectors respectively. Precoding vector.

Compared with the prior art, the technical solution proposed by the embodiment of the present invention has the following advantages. By applying the technical solution of the embodiment of the present invention, the terminal device that transmits the multi-antenna port obtains the precoding vector of the uplink control channel in the multi-antenna port according to the configuration information sent by the base station, and sends the same PUCCH resource in each antenna port. Precoding the corresponding data by using the precoding vector, thereby ensuring PUCCH transmit diversity on the basis of minimizing the PUCCH resource overhead by reasonably configuring the precoding vector applied to the multi-antenna port in each slot. Performance gain. In order to implement the technical solution of the embodiment of the present invention, the embodiment of the present invention further provides a terminal device, and a schematic structural diagram thereof is shown in FIG.

 The first determining module 91 is configured to determine uplink control information that needs to be sent, and determine an uplink control channel resource that carries the uplink control information;

 a second determining module 92, configured to determine, according to configuration information sent by the base station, a precoding vector used by the terminal device when transmitting by using multiple antenna ports;

 The processing module 93 is configured to perform precoding processing on the uplink control information determined by the first determining module 91 according to the precoding vector determined by the second determining module 92, and obtain the antenna ports. Corresponding pre-coded uplink control information;

 The sending module 94 is configured to use the same uplink control channel resource in each antenna port, and send uplink control information corresponding to the corresponding antenna port after the pre-coding processing by the processing module 93, where the uplink control channel The resource is specifically an uplink control channel resource that is determined by the first determining module 91 and that carries the uplink control information.

 In a specific case, the second determining module 92 is specifically configured to: receive configuration information sent by the base station by using high layer signaling, and according to the bit field used to indicate the precoding vector in the configuration information, Determining a precoding vector used by the terminal device when transmitting on a multi-antenna port.

 In another case, the second determining module 92 is specifically configured to:

Receiving configuration information sent by the base station by using a PDCCH, and determining, according to a bit field in the PDCCH for indicating a precoding vector, that the terminal device is in a multi-antenna port The precoding vector used when transmitting.

 Specifically, the second determining module 92 is specifically configured to:

 The configuration information transmitted by the base station is received by the PDCCH having the corresponding PDSCH transmission, and/or the PDCCH indicating the release of the downlink SPS resource.

 On the other hand, the second determining module 92 is specifically configured to:

 When the PDCCH is transmitted in the dedicated search space of the terminal device, determining that the DCI format used by the PDCCH includes a bit field for indicating a precoding vector;

 When the PDCCH is transmitted in the common search space of the terminal device, it is determined that the DCI format used by the PDCCH does not include a bit field indicating a precoding vector.

 Further, the second determining module 92 is specifically configured to:

 A newly added bit field in the DCI format used by the PDCCH is used as a bit field indicating a precoding vector; or, a bit field indicating a precoding vector.

 It is further pointed out that the second determining module 92 is specifically configured to: when the terminal device receives multiple PDCCHs including a bit field indicating a precoding vector, determine, in the PDCCH, The indication values for indicating the bit field of the precoding vector are the same.

 Moreover, the second determining module 92 is further configured to:

 Determining, by the terminal device, a PDCCH that includes a bit field for indicating a precoding vector, determining a precoding vector configured by the base station last time or a fixed precoding vector preset by the base station by using high layer signaling The precoding vector used by the terminal device to transmit on the multi-antenna port in this transmission.

 Preferably, the second determining module 92 is further configured to:

When the terminal device receives an SPS PDSCH without a corresponding PDCCH, and does not receive any PDCCH including a bit field indicating a precoding vector, according to the indication included in the PDCCH that activates the SPS PDSCH Pre-edited A bit field of the code vector that determines a precoding vector used by the terminal device to transmit at the multi-antenna port.

 On the other hand, the second determining module 92 is further configured to:

 Determining a precoding vector corresponding to each time slot according to the configuration information sent by the base station, where the precoding vector corresponding to each time slot is applied to precoding of transmission information in the time slot between multiple antenna ports The precoding vector corresponding to the multiple time slots is independently indicated or jointly indicated by the bit field used to indicate the precoding vector in the configuration information sent by the base station.

 The second determining module 92 is further configured to:

Determining, when the precoding vector corresponding to the multiple time slots is independently indicated by a bit field indicating a precoding vector in the configuration information sent by the base station, determining that the bit field used to indicate the precoding vector is AxK bit Include K=“ ^bg 2 ^N , bit information, respectively, for indicating the precoding vector corresponding to each time slot, where A is the number of time slots included in one transmission, and N is a different preamble that can be used in each time slot. The number of encoding vectors.

 The second determining module 92 is further configured to:

Determining, when the plurality of time slot corresponding precoding vectors are jointly indicated by a bit field indicating a precoding vector in the configuration information sent by the base station, determining that the bit field for indicating the precoding vector includes L= ^lQg 2 ^M , bit information, one of M combinations indicating precoding vectors of a plurality of slots.

 On the other hand, the processing module 93 is specifically configured to:

 The precoding process is performed between the plurality of antenna ports by using the same precoding vector for the data and the pilot in each time slot, and the precoding vector is determined by the configuration information sent by the second determining module 92 by the base station. The precoding vector corresponding to the time slot. On the other hand, an embodiment of the present invention further provides a base station, and a schematic structural diagram thereof is shown in FIG. 10, and includes at least:

a determining module 101, configured to determine a precoding vector used by the terminal device when transmitting the multi-antenna port, and determine an uplink control channel resource used by the terminal device to send uplink control information; The sending module 102 is configured to send configuration information for indicating the precoding vector determined by the determining module 101 to the terminal device;

 The receiving module 103 is configured to receive the pre-coded uplink control information sent by the terminal device on the uplink control channel resource determined by the determining module 101.

 In a specific case, the sending module 102 is specifically configured to:

 Transmitting, by the high layer signaling, the configuration information for indicating the precoding vector to the terminal device, so that the terminal device determines, according to the bit field of the configuration information used to indicate the precoding vector, that the transmission is in the multi-antenna port. The precoding vector used.

 In another case, the sending module 102 is specifically configured to:

 Transmitting, by the PDCCH, configuration information for indicating a precoding vector to the terminal device, so that the terminal device determines, according to a bit field indicating a precoding vector in the PDCCH, a preamble used when transmitting the multi-antenna port. Coding vector.

 In a specific application scenario, the sending module 102 is further configured to: send, by using high layer signaling, a fixed precoding vector to the terminal device, so that the terminal device does not receive the indication for indicating the precoding vector. In the PDCCH of the bit field, the fixed precoding vector is determined as a precoding vector used by itself when transmitting on a multi-antenna port.

 On the other hand, the sending module 102 is specifically configured to:

 The configuration information indicating the precoding vector is transmitted to the terminal device by a PDCCH having a corresponding PDSCH transmission, and/or a PDCCH indicating downlink SPS resource release.

 It should be noted that the sending module 102 is specifically configured to:

 When the PDCCH is transmitted in the dedicated search space of the terminal device, determining that the DCI format used by the PDCCH includes a bit field for indicating a precoding vector;

 When the PDCCH is transmitted in the common search space of the terminal device, it is determined that the DCI format used by the PDCCH does not include a bit field indicating a precoding vector.

 Further, the sending module 102 is specifically configured to:

A newly added bit field in the DCI format used by the PDCCH is used as a bit field indicating a precoding vector; or Indicates the bit field of the precoding vector.

 Further, the sending module 102 is specifically configured to:

 When it is required to transmit a plurality of PDCCHs including a bit field for indicating a precoding vector to the terminal device, it is determined that the indication values of the bit fields included in each of the PDCCHs for indicating the precoding vector are the same.

 On the other hand, the sending module 102 is further configured to:

 Transmitting, to the terminal device, configuration information indicating a precoding vector corresponding to each time slot of the terminal device, where the precoding vector corresponding to each time slot is applied to the transmission information in the time slot. The precoding between the plurality of antenna ports, the precoding vector corresponding to the plurality of time slots is independently indicated or jointly indicated by the bit field used to indicate the precoding vector in the configuration information sent by the sending module 102.

 The sending module 102 is further configured to:

When the precoding vector corresponding to the multiple time slots is independently indicated by the bit field used to indicate the precoding vector in the configuration information sent by the sending module 102, determining that the bit field used to indicate the precoding vector is The AxK bit includes K=“ ^bg 2 ^N , bit information, respectively, for indicating a precoding vector corresponding to each time slot, where A is the number of time slots included in one transmission, and N is usable for each time slot. The number of different precoding vectors.

 On the other hand, the sending module 102 is further configured to:

Determining, when the precoding vector corresponding to the multiple time slots is used to indicate a bit field of the precoding vector in the configuration information sent by the sending module 102, determining the bit field including the precoding vector L = " ^lQg 2 ^M , bit information, one of M combinations indicating precoding vectors of a plurality of slots.

 Compared with the prior art, the technical solution proposed by the embodiment of the present invention has the following advantages:

By applying the technical solution of the embodiment of the present invention, the terminal device that transmits the multi-antenna port obtains the precoding vector of the uplink control channel in the multi-antenna port according to the configuration information sent by the base station, and sends the same PUCCH resource in each antenna port. Precoding the corresponding data by the precoding vector, thereby arranging each time slot by reasonable configuration The precoding vector applied to the multi-antenna port ensures the performance gain of the PUCCH transmit diversity on the basis of minimizing the PUCCH resource overhead. Through the description of the above embodiments, those skilled in the art can clearly understand that the embodiments of the present invention may be implemented by hardware, or may be implemented 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, a server, or a network side device, etc.) to perform the methods described in various implementation scenarios of 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 the business limitation of the embodiment of the present invention.

Claims

Rights request

A method for transmitting information in a multi-antenna port scenario, characterized in that it comprises at least the following steps:

 Determining, by the terminal device, uplink control information that needs to be sent, and determining an uplink control channel resource that carries the uplink control information;

 Determining, by the terminal device, a precoding vector used by the terminal device to transmit on a multi-antenna port according to configuration information sent by the base station;

 And the terminal device performs precoding processing on the uplink control information between the multiple antenna ports according to the precoding vector, and obtains uplink control information after precoding processing corresponding to each antenna port;

 The terminal device uses the same uplink control channel resource in each antenna port to send the pre-coded uplink control information corresponding to the corresponding antenna port, where the uplink control channel resource is specifically determined by the terminal device. The uplink control channel resource that carries the uplink control information.

 The method according to claim 1, wherein the determining, by the terminal device, the precoding vector used by the terminal device to transmit the multi-antenna port according to the configuration information sent by the base station, specifically includes:

 The terminal device receives the configuration information sent by the base station by using the high layer signaling, and determines a precoding vector used by the base station to transmit the multi-antenna port according to the bit field used to indicate the precoding vector in the configuration information;

Or the terminal device receives the configuration information sent by the base station by using a PDCCH corresponding to the PDSCH transmission and/or a PDCCH indicating the release of the downlink SPS resource, and according to a bit field for indicating a precoding vector in the PDCCH, determining a precoding vector used by the multi-antenna port for transmission, wherein the bit field for indicating the precoding vector is a DCI used by the PDCCH A newly added bit field or original bit field in the format.

 3. The method of claim 2, wherein

 When the PDCCH is transmitted in the dedicated search space of the terminal device, the terminal device determines that the DCI format used by the PDCCH includes a bit field for indicating a precoding vector, where the a bit field of the vector is a newly added bit field or a legacy bit field in the DCI format used by the PDCCH; when the PDCCH is transmitted in a common search space of the terminal device, the terminal device determines the PDCCH The bit field used to indicate the precoding vector is not included in the used DCI format.

 The method according to any one of claims 2 to 3, wherein, if the terminal device receives a plurality of PDCCHs including a bit field for indicating a precoding vector, the PDCCH is included in each of the PDCCHs. The indication values of the bit fields used to indicate the precoding vector are the same.

 The method according to claim 2, wherein when the terminal device receives the configuration information sent by the base station by using the PDCCH, the method specifically includes:

When the terminal device does not receive the PDCCH including the bit field for indicating the precoding vector, the terminal device determines the precoding vector configured by the base station last time or the base station presets by the high layer signaling Precoding vector, the precoding vector used by itself in the transmission of multiple antenna ports in this transmission; Or, when the terminal device receives an SPS PDSCH without a corresponding PDCCH, and does not receive any PDCCH including a bit field indicating a precoding vector, the terminal device is configured according to the SPS PDSCH for activating the SPS PDSCH. A bit field included in the PDCCH for indicating a precoding vector determines a precoding vector used by the multi-antenna port for transmission.

 The method according to claim 1, wherein the terminal device determines, according to the configuration information sent by the base station, the precoding vector used by the terminal device to transmit the multi-antenna port, and further includes:

 Determining, by the terminal device, a precoding vector corresponding to each time slot according to the configuration information sent by the base station, where the precoding vector corresponding to each time slot is applied to the transmission information in the time slot at multiple antenna ports In the pre-coding process, the precoding vector corresponding to the multiple time slots is independently indicated or jointly indicated by the bit field used to indicate the precoding vector in the configuration information sent by the base station.

 The method according to claim 6, wherein when the precoding vector corresponding to the plurality of time slots is independently indicated by a bit field used to indicate a precoding vector in the configuration information sent by the base station, Specifically include:

The bit field for indicating the precoding vector is an AxK bit, and includes K=“ ^lQ g 2 ^N bit information” for indicating a precoding vector corresponding to each time slot, where A is a time slot included in one transmission. Number, N is the number of different precoding vectors that can be used per slot;

Or, when the multiple time slot corresponding precoding vector is jointly indicated by the bit field used to indicate the precoding vector in the configuration information sent by the base station, specifically: The bit field for indicating the precoding vector includes one of M combinations of L = " ^lQg 2 ^M , bit information, and precoding vectors indicating a plurality of slots.

 The method according to claim 6, wherein the terminal device performs precoding processing on the uplink control information between multiple antenna ports according to the precoding vector, and obtains a pre-corresponding to each antenna port. The uplink control information after the coding process includes:

 The terminal device performs precoding processing between the plurality of antenna ports by using the same precoding vector for the data and the pilot in each time slot, where the precoding vector is configuration information sent by the terminal device by using the base station. The determined precoding vector corresponding to the time slot.

9. A terminal device, comprising: at least:

 a first determining module, configured to determine uplink control information that needs to be sent, and determine an uplink control channel resource that carries the uplink control information;

 a second determining module, configured to determine, according to configuration information sent by the base station, a precoding vector used by the terminal device when transmitting by using multiple antenna ports;

a processing module, configured to perform precoding processing on the uplink control information determined by the first determining module according to the precoding vector determined by the second determining module, to obtain a pre-correspondence corresponding to each antenna port The uplink control information after the encoding process is performed, and the sending module is configured to use the same uplink control channel resource in each antenna port, and send the uplink control information corresponding to the corresponding antenna port after the pre-coding processing by the processing module, where The uplink control channel resource is specifically an uplink control channel resource that is determined by the first determining module and that carries the uplink control information.

The terminal device according to claim 9, wherein the second determining module is specifically configured to:

 Receiving configuration information sent by the base station by using high layer signaling, and determining a precoding vector used by the terminal device to transmit in a multi-antenna port according to a bit field used to indicate a precoding vector in the configuration information;

 Or, the configuration information sent by the base station is received by a PDCCH with a corresponding PDSCH transmission and/or a PDCCH indicating a downlink SPS resource release, and the terminal device is determined according to a bit field in the PDCCH for indicating a precoding vector. The precoding vector used in the transmission of the multi-antenna port, wherein the bit field used to indicate the precoding vector is a newly added bit field or an original bit field in the DCI format used by the PDCCH.

 The terminal device according to claim 10, wherein the second determining module is specifically configured to:

 When the PDCCH is transmitted in the dedicated search space of the terminal device, determining that the DCI format used by the PDCCH includes a bit field for indicating a precoding vector, where the bit field for indicating a precoding vector a newly added bit field or original bit field in the DCI format used by the PDCCH;

 When the PDCCH is transmitted in the common search space of the terminal device, it is determined that the DCI format used by the PDCCH does not include a bit field indicating a precoding vector.

The terminal device according to any one of claims 10 to 11, wherein the second determining module is specifically configured to: When the terminal device receives a plurality of PDCCHs including a bit field indicating a precoding vector, it is determined that the indication values of the bit fields included in each of the PDCCHs for indicating the precoding vector are the same.

 The terminal device according to claim 10, wherein the second determining module is further configured to:

 Determining, by the terminal device, a PDCCH that includes a bit field for indicating a precoding vector, determining a precoding vector configured by the base station last time or a fixed precoding vector preset by the base station by using high layer signaling a precoding vector used by the terminal device to transmit on a multi-antenna port in the present transmission;

 Or, when the terminal device receives an SPS PDSCH without a corresponding PDCCH, and does not receive any PDCCH including a bit field indicating a precoding vector, according to the PDCCH used to activate the SPS PDSCH a bit field for indicating a precoding vector, and determining a precoding vector used by the terminal device when transmitting at a multi-antenna port.

 The terminal device according to claim 9, wherein the second determining module is further configured to:

 Determining a precoding vector corresponding to each time slot according to the configuration information sent by the base station, where the precoding vector corresponding to each time slot is applied to precoding of transmission information in the time slot between multiple antenna ports The precoding vector corresponding to the multiple time slots is independently indicated or jointly indicated by the bit field used to indicate the precoding vector in the configuration information sent by the base station.

The terminal device according to claim 14, wherein the second authentic The module is also used to:

Determining, when the precoding vector corresponding to the multiple time slots is independently indicated by a bit field indicating a precoding vector in the configuration information sent by the base station, determining that the bit field used to indicate the precoding vector is AxK bit Include K=“ ^bg 2 ^N , bit information, respectively, for indicating the precoding vector corresponding to each time slot, where A is the number of time slots included in one transmission, and N is a different preamble that can be used in each time slot. The number of code vectors;

Or determining, when the multiple time slot corresponding precoding vector is jointly indicated by the bit field used to indicate the precoding vector in the configuration information sent by the base station, determining that the bit field used to indicate the precoding vector includes L = " ^lQg 2 ^M , bit information, one of M combinations indicating precoding vectors of a plurality of slots.

 The terminal device according to claim 14, wherein the processing module is specifically configured to:

 Performing precoding processing between the plurality of antenna ports using the same precoding vector for the data and the pilot in each slot, the precoding vector being determined by the configuration information sent by the second determining module by the base station The precoding vector corresponding to the time slot.

17. A method of transmitting information in a multi-antenna port scenario, characterized in that it comprises at least the following steps:

 Determining, by the base station, a precoding vector used by the terminal device to transmit the multi-antenna port; the base station transmitting configuration information for indicating the precoding vector to the terminal device;

Determining, by the base station, an uplink control used by the terminal device to send uplink control information Channel resources;

 The base station receives, on the uplink control channel resource, uplink control information after precoding processing sent by the terminal device.

 The method according to claim 17, wherein the sending, by the base station, the configuration information for indicating the precoding vector to the terminal device, specifically includes:

 The base station sends, by using the high layer signaling, the configuration information for indicating the precoding vector to the terminal device, so that the terminal device determines that it is in the multiple antenna port according to the bit field indicating the precoding vector in the configuration information. a precoding vector used for transmission; or, the base station sends configuration information indicating a precoding vector to the terminal device by using a PDCCH having a corresponding PDSCH transmission and/or a PDCCH indicating downlink SPS resource release, so that Determining, by the terminal device, a precoding vector used by the multi-antenna port according to the bit field of the precoding vector in the PDCCH, where the bit field used to indicate the precoding vector is the PDCCH The newly added bit field or original bit field in the DCI format used.

 The method of claim 18, before the sending, by the base station, the configuration information for indicating the precoding vector to the terminal device by using the PDCCH, the method further includes:

 The base station sends a fixed precoding vector to the terminal device by using the high layer signaling, so that the terminal device determines the fixed precoding when the PDCCH including the bit field for indicating the precoding vector is not received. Vector, the precoding vector used by this transmission in its own multi-antenna port.

20. The method of claim 18, wherein The base station determines that the DCI format used by the PDCCH includes a bit field for indicating a precoding vector, where the PDCCH is used to indicate a precoding vector, when the PDCCH is transmitted in a dedicated search space of the terminal device. The bit field is a newly added bit field or an original bit field in the DCI format used by the PDCCH;

 When the PDCCH is transmitted in the common search space of the terminal device, the base station determines that the DCI format used by the PDCCH does not include a bit field indicating a precoding truncation.

 The method according to any one of claims 18 or 20, wherein, if the base station sends, to the terminal device, a plurality of PDCCHs including a bit field for indicating a precoding vector, each of the methods The indication values of the bit fields included in the PDCCH for indicating the precoding vector are the same.

 The method according to claim 17, wherein the base station sends configuration information for indicating the precoding vector to the terminal device, and the method further includes: sending, by the base station, the terminal device to the terminal device a configuration information indicating a precoding vector corresponding to each time slot of the terminal device, where the precoding vector corresponding to each time slot is applied to precoding of transmission information in the time slot between multiple antenna ports The precoding vector corresponding to the multiple time slots is independently indicated or jointly indicated by the bit field used to indicate the precoding vector in the configuration information sent by the base station.

 The method according to claim 22, wherein when the precoding vector corresponding to the plurality of time slots is independently indicated by a bit field used to indicate a precoding vector in the configuration information sent by the base station, Specifically include:

The bit field used to indicate the precoding vector is AxK bits, and is included for respectively K=“ ^lQ g 2 ^N bit information” indicating the precoding vector corresponding to each time slot, where A is the number of time slots included in one transmission, and N is the number of different precoding vectors that can be used in each time slot. ;

Or, when the precoding vector corresponding to the multiple timeslots is jointly indicated by the bit field used to indicate the precoding vector in the configuration information sent by the base station, the method specifically includes: the bit used to indicate the precoding vector The field contains L = " ^lQg 2 ^M , bit information, one of M combinations indicating precoding vectors of a plurality of slots.

24. A base station, comprising: at least:

 a determining module, configured to determine a precoding vector used by the terminal device to transmit the multi-antenna port, and determine an uplink control channel resource used by the terminal device to send uplink control information;

 a sending module, configured to send, to the terminal device, configuration information used to indicate a precoding vector determined by the determining module;

 The receiving module is configured to receive, according to the uplink control channel resource determined by the determining module, the uplink control information after the precoding process sent by the terminal device.

 The base station according to claim 24, wherein the sending module is specifically configured to:

 Transmitting, by the high layer signaling, the configuration information for indicating the precoding vector to the terminal device, so that the terminal device determines, according to the bit field of the configuration information used to indicate the precoding vector, that the transmission is in the multi-antenna port. The precoding vector used;

Or, by having a PDCCH corresponding to PDSCH transmission and/or indicating a downlink SPS resource And releasing the PDCCH to the terminal device to send configuration information for indicating a precoding vector, so that the terminal device determines, according to the bit field of the precoding vector in the PDCCH, that the terminal device uses the multi-antenna port for transmission. a precoding vector, where the bit field used to indicate the precoding vector is a newly added bit field or an original bit field in the DCI format used by the PDCCH.

 The base station according to claim 25, wherein the sending module is further configured to:

 Transmitting, by the high layer signaling, a fixed precoding vector to the terminal device, so that the terminal device determines the fixed precoding vector when the PDCCH including the bit field for indicating the precoding vector is not received, The precoding vector used by itself when transmitting on multiple antenna ports.

 The base station according to claim 25, wherein the sending module is specifically configured to:

 When the PDCCH is transmitted in the dedicated search space of the terminal device, determining that the DCI format used by the PDCCH includes a bit field for indicating a precoding vector, where the bit field for indicating a precoding vector a newly added bit field or original bit field in the DCI format used by the PDCCH;

 When the PDCCH is transmitted in the common search space of the terminal device, it is determined that the DCI format used by the PDCCH does not include a bit field for indicating a precoding vector.

The base station according to any one of claims 25 or 27, wherein the sending module is specifically configured to: When it is required to send a plurality of PDCCHs including a bit field indicating a precoding vector to the terminal device, it is determined that the indication values of the bit fields included in each of the PDCCHs for indicating the precoding vector are the same.

 The base station according to claim 24, wherein the sending module is further configured to:

 Transmitting, to the terminal device, configuration information indicating a precoding vector corresponding to each time slot of the terminal device, where the precoding vector corresponding to each time slot is applied to the transmission information in the time slot. The precoding process between the plurality of antenna ports, the precoding vector corresponding to the plurality of time slots is independently indicated or jointly indicated by the bit field used to indicate the precoding vector in the configuration information sent by the sending module.

 The base station according to claim 29, wherein the sending module is further configured to:

Determining, when the precoding vector corresponding to the multiple time slots is independently indicated by a bit field indicating a precoding vector in the configuration information sent by the sending module, determining that the bit field used to indicate the precoding vector is AxK The bit includes K=“ ^bg 2 ^N bit information” for indicating a precoding vector corresponding to each time slot, where A is the number of time slots included in one transmission, and N is a different preamble that can be used in each time slot. Or the number of the coding vectors; or, when the precoding vector corresponding to the multiple time slots is used to indicate a bit field of the precoding vector in the configuration information sent by the sending module, the determining is used to indicate The bit field of the precoding vector contains L = " ^1Qg 2 ^M bits of information, indicating one of M combinations of precoding vectors of a plurality of slots.