WO2017148220A1

WO2017148220A1 - Uplink beam tracking method, terminal, and base station

Info

Publication number: WO2017148220A1
Application number: PCT/CN2017/071117
Authority: WO
Inventors: 刘星; 刘文豪; 毕峰
Original assignee: 中兴通讯股份有限公司
Priority date: 2016-02-29
Filing date: 2017-01-13
Publication date: 2017-09-08
Also published as: CN107135021B; CN107135021A

Abstract

An uplink beam tracking method, a terminal, and a base station. A terminal sends uplink information to a base station using an uplink preferred transmit beam, and receives feedback information sent by the base station, wherein the feedback information is used for indicating a trigger state of uplink beam tracking to the terminal; the terminal sends an uplink beam tracking signal to the base station when determining to trigger the uplink beam tracking according to the feedback information. A base station receives, using an uplink preferred receive beam, uplink information sent by a terminal; the base station determines whether to trigger uplink beam tracking according to a reception state of the uplink information, and sends feedback information to the terminal.

Description

Uplink beam tracking method, terminal and base station

Technical field

This application relates to, but is not limited to, the field of high frequency communication technology.

Background technique

With the continuous advancement of radio technology, a variety of radio services have emerged, and the spectrum resources supported by radio services are limited. In view of the increasing demand for bandwidth, the 300 megabytes of commercial communications used by related technologies are mainly used. The spectrum resources between Hertz (MHz) and 3 GHz are extremely tight and cannot meet the needs of future wireless communications.

In the future wireless communication, communication will be carried out using a carrier frequency higher than that of the 4th Generation Mobile Communication (4G) system, for example, using 28 GHz, 45 GHz, etc. The high-frequency channel has the disadvantages of large free propagation loss, easy to be absorbed by oxygen, and greatly affected by rain attenuation, which seriously affects the coverage performance of high-frequency communication systems, in order to ensure high-frequency communication and long-term evolution (Long Term Evolution, referred to as : LTE) There is an approximate signal to interference plus noise ratio (SINR) in the system coverage, and it is necessary to ensure the antenna gain of high frequency communication. Fortunately, since the carrier corresponding to high-frequency communication has a shorter wavelength, it can ensure that more antenna elements can be accommodated per unit area, and more antenna elements mean that the beamforming method can be used to improve the antenna. Gain to ensure coverage of high frequency communication.

After the beamforming method, the transmitting end can concentrate the transmitting energy in a certain direction, and the energy is small or absent in other directions, that is, each beam has its own directivity, and each beam can only cover To a terminal in a certain direction, the transmitting end, that is, the base station needs to transmit multiple beams to complete the omnidirectional coverage, for example, the number of beams is several tens or even hundreds. When the base station sends the downlink information to the terminal in a certain direction, the corresponding beam bearer is adopted, and at the receiving end, the terminal needs to perform beamforming on the receiving end to implement directional reception, thereby improving the receiving antenna gain. The two sides of the communication realize the alignment of the transmitting and receiving beams through the initial beam training process. The initial beam training process is a relatively long process. To obtain the best beam training effect, it is necessary to traverse all the transmitting and receiving beam pairs to find the best performance transmitting and receiving beam. The direction acts as a communication beam.

However, during the communication process, the transceiver beam will change due to the movement of the terminal. The application scenario is, for example, that the uplink preferred transmit beam and the downlink preferred receive beam will change due to the rotation of the terminal. If the terminal still uses the uplink preferred transmit beam to the base station. When the uplink data is sent, the base station will not receive the data. Correspondingly, the terminal cannot receive the downlink data of the base station through the downlink preferred receive beam. If the relevant changes cannot be quickly detected and a new preferred transmit and receive beam is identified, the service may be interrupted, which seriously affects the communication quality of the terminal in high-frequency communication. Therefore, in the high frequency communication process encountered the above situation, it is necessary to design an effective technical means to quickly achieve the realignment of the transmit and receive beam directions.

Summary of the invention

The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.

The present invention provides an uplink beam tracking method, a terminal, and a base station to solve the problem that the terminal may be interrupted due to the mobility of the terminal in the related art, which may seriously affect the communication quality of the terminal in the high frequency communication.

An uplink beam tracking triggering method includes:

Preferably, the terminal sends a uplink information to the base station by using a preferred transmit beam;

Receiving, by the terminal, feedback information sent by the base station, where the feedback information is used to indicate, to the terminal, a trigger status of uplink beam tracking;

When the terminal determines to trigger uplink beam tracking according to the feedback information, the terminal sends an uplink beam tracking signal to the base station.

Optionally, in the uplink beam tracking triggering method, the uplink information includes uplink service data, or includes an uplink reference signal.

Optionally, in the uplink beam tracking triggering method, the receiving, by the terminal, the feedback information sent by the base station includes:

Receiving, by the terminal, the feedback information sent by the base station in an omnidirectional manner on a predefined feedback resource; or

Receiving, by the terminal, the feedback sent by the base station by using a wide beam on a predefined feedback resource Information; or,

The uplink information corresponds to two predefined feedback resources, and the terminal first receives the feedback information on a predefined feedback resource on one of the predefined feedback resources, and when not received, on another predefined feedback resource. Receiving the feedback information in a wide beam or omnidirectionally;

The wide beam refers to a receiving beam that partially or completely covers the downlink preferred receiving beam and has a larger receiving angle than the downlink preferred receiving beam; and the predefined feedback resource exists between the resource occupied by the uplink information Predefined mappings.

Optionally, in the uplink beam tracking triggering method, the feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal, including:

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the newly added bit in the receiving confirmation indication information to indicate whether to trigger uplink beam tracking; or

The feedback information adopts the receiving confirmation indication information of the uplink data, triggers the uplink beam tracking by using the negative acknowledgement NACK indication, and does not trigger the uplink beam tracking by using the positive acknowledgement ACK indication; or

The feedback information uses dedicated indication information, and uses the dedicated indication information to indicate whether to trigger uplink beam tracking; or

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the resource indication occupied by the receiving confirmation indication information to indicate whether to trigger uplink beam tracking, where the resource occupied by the receiving confirmation indication information is from two predefined presets corresponding to the uplink information. Select from feedback resources.

Optionally, in the uplink beam tracking triggering method, the terminal sends an uplink beam tracking signal to the base station, including:

Transmitting, by the terminal, the uplink beam tracking signal to the base station on multiple uplink transmit beams according to a transmission configuration of a preset uplink beam tracking signal; or

And acquiring, by the terminal, the sending configuration of the uplink beam tracking signal from the feedback information or other system information sent by the base station, and sending the uplink beam tracking to the base station on multiple uplink transmit beams according to the sending configuration. Signal; or,

The system pre-defines a transmission configuration of two or more uplink beam tracking signals, and the terminal acquires, from the feedback information or other system information sent by the base station, indication information of a currently used transmission configuration, which is indicated according to the indication information. Transmitting configuration to the plurality of uplink transmit beams The base station transmits the uplink beam tracking signal.

Optionally, in the uplink beam tracking triggering method, as described above, the multiple uplink transmit beams include the uplink preferred transmit beam, and one or both sides of the uplink preferred transmit beam and preferably transmit with the uplink The uplink transmit beam adjacent to the beam.

Optionally, in the uplink beam tracking triggering method, the sending configuration of the uplink beam tracking signal includes one or more of the following information:

The transmission period of the uplink beam tracking signal;

The number of times the uplink beam tracking signal is transmitted;

Sending a time-frequency domain resource set of the uplink beam tracking signal;

The number of uplink transmit beams that transmit uplink beam tracking signals;

The mapping relationship between the uplink beam tracking signal and the index of the uplink transmit beam.

Optionally, in the uplink beam tracking triggering method, the uplink information is uplink service data, and the time-frequency domain resource set of the uplink uplink tracking signal includes all or part of the retransmission resource of the uplink service data. .

An uplink beam tracking method includes:

The terminal performs an uplink beam tracking trigger according to the uplink beam tracking triggering method as described above, and sends an uplink beam tracking signal to the base station when determining to trigger the uplink beam tracking.

The terminal receives the first indication information sent by the base station, and updates the currently used uplink preferred transmit beam according to the first indication information, where the first indication information is used to indicate a new uplink preference determined by the base station. Transmit beam.

Optionally, in the uplink beam tracking method, the system pre-defines a relative positional relationship between a time-frequency resource occupied by the first indication information and a time-frequency resource occupied by the uplink beam tracking signal;

Receiving, by the terminal, the first indication information sent by the base station, the determining, by the terminal, the time domain resource occupied by the first indication information according to the time domain resource occupied by the uplink beam tracking signal and the relative position relationship And receiving the first indication information on the determined time-frequency resource.

A terminal comprising:

The uplink information sending module is configured to: send the uplink information to the base station by using the preferred transmit beam in the above line;

The feedback information receiving module is configured to: receive feedback information sent by the base station, where the feedback information is used to indicate, to the terminal, a trigger status of uplink beam tracking;

The uplink beam tracking module is configured to: determine whether to trigger uplink beam tracking according to the feedback information received by the feedback information receiving module, and send an uplink beam tracking signal to the base station when determining to trigger uplink beam tracking.

Optionally, in the terminal, the uplink information sent by the uplink information sending module includes uplink service data, or includes an uplink reference signal.

Optionally, in the terminal, the feedback information receiving module receives the feedback information sent by the base station, including:

The feedback information receiving module receives the feedback information sent by the base station in an omnidirectional manner on a predefined feedback resource; or

The feedback information receiving module receives the feedback information sent by the base station by using a wide beam on a predefined feedback resource; or

The uplink information corresponds to two predefined feedback resources, and the feedback information receiving module first receives the feedback information by using a preferred receive beam on one of the predefined feedback resources, and when not received, another predefined Receiving, by the wide beam, the feedback information on the feedback resource or omnidirectionally receiving the feedback information;

Optionally, in the terminal, the feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal, including:

The feedback information uses dedicated indication information, and the dedicated indication information is used to indicate whether to trigger Uplink beam tracking; or,

Optionally, in the terminal, the uplink beam tracking module sends an uplink beam tracking signal to the base station, including:

The uplink beam tracking module sends the uplink beam tracking signal to the base station on multiple uplink transmit beams according to a transmission configuration of a preset uplink beam tracking signal of the system; or

And obtaining, by the uplink beam tracking module, a sending configuration of an uplink beam tracking signal from the feedback information or other system information sent by the base station, and sending, according to the sending configuration, to the base station on multiple uplink transmit beams. Uplink beam tracking signal; or,

The system pre-defines a transmission configuration of two or more uplink beam tracking signals, and the uplink beam tracking module acquires, from the feedback information or other system information sent by the base station, indication information of a currently used transmission configuration, according to the indication. Sending configuration of the information indication, sending the uplink beam tracking signal to the base station on multiple uplink transmit beams;

The sending configuration of the uplink beam tracking signal includes one or more of the following information: a sending period of the uplink beam tracking signal, a number of times of sending the uplink beam tracking signal, and a time-frequency domain resource set for transmitting the uplink beam tracking signal, a number of uplink transmit beams for transmitting an uplink beam tracking signal, and a mapping relationship between an uplink beam tracking signal and an index of an uplink transmit beam; the plurality of uplink transmit beams including the uplink preferred transmit beam, and the uplink optimization An uplink transmit beam that is on one or both sides of the transmit beam and that is adjacent to the upstream preferred transmit beam.

Optionally, in the terminal, the uplink information is uplink service data, and the time-frequency domain resource set that sends the uplink beam tracking signal includes all or part of the retransmission resource of the uplink service data.

Optionally, in the terminal, the uplink beam tracking module is further configured to: after sending an uplink beam tracking signal to the base station, receive the first indication information sent by the base station, and according to the first The indication information updates the currently used uplink preferred transmit beam, wherein the first indication information is used to indicate a new uplink preferred transmit beam determined by the base station.

An uplink beam tracking triggering and indication method includes:

Preferably, the base station is configured to receive uplink information sent by the beam receiving terminal;

Determining, by the base station, whether to trigger uplink beam tracking according to the receiving state of the uplink information;

The base station sends feedback information to the terminal, where the feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal.

Optionally, in the uplink beam tracking triggering and indicating method, the uplink information includes uplink service data, or includes an uplink reference signal.

Optionally, in the uplink beam tracking triggering and indicating method, the determining, by the base station, whether to trigger uplink beam tracking according to the receiving state of the uplink information, including:

The base station triggers uplink beam tracking when the receiving state satisfies any one of the following one or more conditions:

Receiving quality of the uplink information on the uplink preferred receive beam decreases, and the magnitude of the drop exceeds a set amplitude threshold;

Receiving quality of the uplink information on the uplink preferred receive beam is lower than a set reception quality threshold;

The uplink information was not successfully received;

When the number of retransmissions of the uplink information reaches the set number of retransmission times, the uplink information is not successfully received.

Optionally, in the uplink beam tracking triggering and indicating method, the feedback information is used to indicate the triggering state of the uplink beam tracking to the terminal, including:

Optionally, in the uplink beam tracking triggering and indicating method, the sending, by the base station, the feedback information to the terminal includes:

Sending, by the base station, the feedback information by using a preferred transmit beam on a predefined feedback resource; or

Transmitting, by the base station, the feedback information by using a wide beam on a predefined feedback resource; or

Sending, by the base station, the feedback information in an omnidirectional manner on a predefined feedback resource; or

The uplink information corresponds to two predefined feedback resources; when the uplink beam tracking is not triggered, the base station preferably transmits the following lines on the first predefined feedback resource with the time domain position in the two predefined feedback resources. Transmitting, by the beam, the feedback information, when the uplink beam tracking is triggered, the base station sends the omnidirectional transmission or the omnidirectional transmission on the second predefined feedback resource in the second predefined feedback resource Feedback;

The wide beam refers to a transmit beam that covers the downlink preferred transmit beam in whole or in part and has a larger transmit angle than the downlink preferred transmit beam; the pre-defined feedback resource exists between the resource occupied by the uplink information and the uplink information. Predefined mappings.

Optionally, in the uplink beam tracking triggering and indicating method, the second predefined feedback resource is located in a time domain resource set used by the base station, and is configured to transmit information in a wide beam or omnidirectional time domain resource. Within the unit.

Optionally, in the uplink beam tracking triggering and indicating method, as described above, after the determining, by the base station, that the uplink beam tracking is triggered, the method further includes: the base station indicating, by using the feedback information or other system information, the terminal Transmission configuration of the uplink beam tracking signal.

Optionally, in the uplink beam tracking triggering and indicating method, the sending configuration of the uplink beam tracking signal includes one or more of the following information:

The transmission period of the uplink beam tracking signal;

The number of times the uplink beam tracking signal is transmitted;

The number of uplink transmit beams that transmit uplink beam tracking signals;

Optionally, in the uplink beam tracking triggering and indicating method, the uplink information is uplink service data, and the time-frequency domain resource set of the uplink uplink tracking signal includes all or part of the uplink service data. Pass resources.

An uplink beam tracking method includes:

The base station performs the triggering and indication of the uplink beam tracking according to the uplink beam tracking triggering and indication method as described above, and uses the feedback information to indicate the triggering state of the uplink beam tracking to the terminal;

After the base station determines to trigger the uplink beam tracking, and sends the feedback information to the terminal, the method further includes:

The base station receives an uplink beam tracking signal sent by the terminal on multiple uplink transmit beams, and determines an uplink transmit beam in which the uplink beam tracking signal with the best reception quality is received as a new uplink preference in the received uplink beam tracking signal. Transmitting a beam and transmitting first indication information to the terminal, where the first indication information is used to indicate the new uplink preferred transmit beam.

The sending, by the base station, the first indication information to the terminal, the determining, by the base station, the time-frequency resource occupied by the first indication information according to the time-frequency resource occupied by the uplink beam tracking signal and the relative position relationship, Transmitting the first indication information on the determined time-frequency resource.

a base station, including

The uplink information receiving module is configured to: the uplink information that is preferably received by the receiving beam receiving terminal;

The uplink beam tracking module is configured to: determine, according to the receiving state of the uplink information by the uplink information receiving module, whether to trigger uplink beam tracking, and send feedback information to the terminal, where the feedback information is used for The terminal indicates the trigger status of the uplink beam tracking.

Optionally, in the base station, the uplink information received by the uplink information receiving module includes uplink service data, or includes an uplink reference signal.

Optionally, in the base station, the uplink beam tracking module determines, according to the receiving state of the uplink information, whether to trigger uplink beam tracking, where the receiving state meets one or more of the following conditions: When any of the conditions is met, the uplink beam tracking is triggered:

The uplink information was not successfully received;

Optionally, in the base station, the feedback information is used to indicate, to the terminal, a trigger status of the uplink beam tracking, including:

Optionally, in the base station, the uplink beam tracking module sends feedback information to the terminal, including:

The uplink beam tracking module sends the feedback information by using a preferred transmit beam on a predefined feedback resource; or

The uplink beam tracking module sends the feedback information in a wide beam on a predefined feedback resource; or

The uplink beam tracking module sends the feedback information omnidirectionally on a predefined feedback resource; or

The uplink information corresponds to two predefined feedback resources; when the uplink beam tracking is not triggered, the uplink beam tracking module is below the first predefined feedback resource in the time domain of the two predefined feedback resources. And transmitting, by the preferred transmit beam, the feedback information, when the uplink beam tracking is triggered, the uplink beam tracking module sends a wide beam on the second predefined feedback resource in the time domain position of the two predefined feedback resources. Or sending the feedback information in an omnidirectional manner;

The wide beam refers to a transmit beam that covers the downlink preferred transmit beam in whole or in part and has a larger transmit angle than the downlink preferred transmit beam; the pre-defined feedback resource exists between the resource occupied by the uplink information and the uplink information. a predefined mapping relationship; the second predefined feedback resource is located in a time domain resource unit configured to transmit information in a wide beam or omnidirectional in a time domain resource set used by the base station.

Optionally, in the base station, the uplink beam tracking module is further configured to: after determining to trigger uplink beam tracking, indicate, by using the feedback information or other system information, the sending configuration of the uplink beam tracking signal to the terminal. The transmission configuration of the uplink beam tracking signal includes one or more of the following information: a transmission period of the uplink beam tracking signal, a transmission frequency of the uplink beam tracking signal, and a time-frequency domain resource set for transmitting the uplink beam tracking signal. The number of uplink transmit beams that transmit the uplink beam tracking signal, and the mapping relationship between the uplink beam tracking signal and the index of the uplink transmit beam.

Optionally, in the base station, the uplink information is uplink service data, and the time-frequency domain resource set that sends the uplink beam tracking signal includes all or part of the retransmission resource of the uplink service data.

Optionally, in the base station, the uplink beam tracking module is further configured to: after sending the feedback information to the terminal, receive an uplink beam tracking signal sent by the terminal on multiple uplink transmit beams, and The uplink transmit beam in which the uplink beam tracking signal with the best received quality is received is determined as a new uplink preferred transmit beam, and the first indication information is sent to the terminal, where the first indication information is used. The new uplink preferred transmit beam is indicated.

The uplink beam tracking method, the terminal, and the base station provided by the embodiment of the present invention determine whether the uplink beam tracking is triggered by the base station according to the change of the received quality of the uplink information, and indicate the trigger status of the uplink beam tracking to the terminal through the feedback message (that is, whether the uplink is triggered. The foregoing technical solution provided by the embodiment of the present invention can effectively detect the state of the uplink preferred transmit beam change, and trigger related uplink beam tracking in time; ensure that the terminal reliably receives the trigger indication information, thereby ensuring the uplink beam tracking process. Effective triggering and indication provide the necessary conditions for realignment of the transmit and receive beams. Compared with the related technology, the delay of the trigger indication process is saved, the influence of the beam tracking process on the business continuity is reduced, and the user experience is improved.

Other aspects will be apparent upon reading and understanding the drawings and detailed description.

BRIEF abstract

1 is a schematic diagram of an initial state of a base station and a terminal in an application scenario according to an embodiment of the present invention;

2 is a schematic diagram of relative motion of a base station and a terminal in an application scenario according to an embodiment of the present invention;

3 is a signaling flowchart of a base station and a terminal according to an uplink beam tracking method according to an embodiment of the present invention;

FIG. 4 is a flowchart of an uplink beam tracking triggering method according to Embodiment 1 of the present invention;

FIG. 5 is a flowchart of an uplink beam tracking method according to Embodiment 1 of the present invention;

FIG. 6 is a schematic structural diagram of a terminal according to Embodiment 1 of the present invention; FIG.

FIG. 7 is a flowchart of an uplink beam tracking method according to Embodiment 2 of the present invention;

FIG. 8 is a flowchart of another uplink beam tracking method according to Embodiment 2 of the present invention;

FIG. 9 is a schematic structural diagram of a base station according to Embodiment 2 of the present invention;

10 is a schematic diagram of a scenario according to an example 1, 2, 3, and 6 of the present invention;

11 is a schematic diagram of a signaling flow of an uplink beam tracking method according to an example 1 of the present invention;

FIG. 12 is a schematic flowchart diagram of a process according to an example 1 of the present invention; FIG.

FIG. 13 is a schematic diagram of a feedback information transmission manner according to Examples 1 and 6 of the present invention; FIG.

14 is a schematic diagram of an uplink beam tracking signal transmission pattern according to an example 1 of the present invention;

15 is a schematic diagram of a signaling flow of an uplink beam tracking method according to Example 2 of the present invention;

16 is a schematic diagram of a feedback information transmission manner according to Example 2 of the present invention;

17 is a schematic flow chart of a flow according to Example 3 of the present invention;

FIG. 18 is a schematic diagram of an application scenario provided by examples 4 and 5 of the present invention; FIG.

19 is a schematic diagram of a signaling flow of an uplink beam tracking method according to examples 4 and 5 of the present invention;

20 is a schematic diagram of a feedback information transmission manner according to Example 4 of the present invention;

21 is a schematic diagram of an uplink beam tracking signal transmission pattern according to Example 4 of the present invention;

22 is a schematic flowchart of a flow according to an example provided in Example 5 of the present invention;

23 is a schematic diagram of an uplink beam tracking signal transmission pattern according to Example 5 of the present invention;

24 is a schematic diagram of a signaling flow of an uplink beam tracking method according to Example 6 of the present invention;

FIG. 25 is a schematic flowchart diagram of a process provided by Example 6 of the present invention.

Embodiments of the invention

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments herein may be arbitrarily combined with each other.

The steps illustrated in the flowchart of the figures may be executed in a computer system in accordance with a set of computer executable instructions. Also, although logical sequences are shown in the flowcharts, in some cases the steps shown or described may be performed in a different order than the ones described herein.

The application scenarios of the embodiments of the present invention are described below.

The beam tracking can be understood as the switching between the beams in the base station. As shown in FIG. 1 , it is a schematic diagram of the initial state of the base station and the terminal in the application scenario according to the embodiment of the present invention. The high frequency base station (HBS) (hereinafter referred to as a base station) and a terminal (User Equipment, UE for short) currently perform data interaction through a preferred transmit and receive beam, for example, considering an uplink transmission process. The uplink preferred transmit beam of the UE is Bt0, and the uplink preferred receive beam of the HBS is Br1. The preferred transceiving beam pair is determined by an initial beam training process identification, during initial beam training, The transceiver needs to traverse the combination of all transmit beams and receive beams to identify the optimal beam pair.

Considering the change of the transmission and reception beam caused by the "terminal movement" (the transmission beam change caused by the change of the transmission environment is not considered), as shown in FIG. 2, which is a schematic diagram of the relative motion of the base station and the terminal in the application scenario according to the embodiment of the present invention ( In Figure 2, the beam is mainly used to indicate the direction of the beam rather than the coverage.) Beam tracking occurs in two situations:

a) The UE moves out of the downlink beam range. Due to the relative position change between the UE and the HBS, the uplink and downlink transmit and receive beams are potentially changed, and uplink and downlink beam tracking are required.

b) If the UE rotates, the uplink preferred transmit beam changes, and uplink beam tracking is required to perform uplink beam training again.

Considering the low-speed mobile scene of the general terminal, b) the situation occurs more frequently; when the UE moves quickly across the beam direction, a) the situation occurs frequently. Considering relative motion, there are also scenarios where both situations occur simultaneously. a) The situation can also be seen as the "relative rotation" of the base station, the two are essentially the same.

Embodiment 1

This embodiment describes an uplink beam tracking method from the perspective of a terminal. FIG. 3 is a signaling flowchart between a base station and a terminal according to an uplink beam tracking method according to an embodiment of the present disclosure, and FIG. 4 is a flowchart of the first embodiment of the present invention. A flowchart of the method for triggering the uplink beam tracking, the method provided by the embodiment shown in FIG. 4 is performed by the terminal, and the method of the present embodiment may include the following steps, that is, step 110. ~ Step 130:

Step 110: The terminal sends a uplink information to the base station by using a preferred transmit beam.

Optionally, in the embodiment of the present invention, the uplink information may include uplink service data, or may include an uplink reference signal.

Step 120: The terminal receives the feedback information sent by the base station, where the feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal.

In the embodiment of the present invention, the feedback information may be a high-level signaling, for example, a message in a Radio Resource Control (RRC) signaling, and the feedback information may also be a downlink physical control channel bearer. Downlink control information (Downlink Control Information, referred to as: DCI).

Optionally, in the embodiment of the present invention, the terminal may receive the feedback information sent by the base station according to one of the following manners:

The terminal omnidirectionally receives feedback information sent by the base station on the predefined feedback resource; or

The terminal receives the feedback information sent by the base station by using a wide beam on the predefined feedback resource; or

The foregoing uplink information corresponds to two predefined feedback resources, and the terminal firstly receives the beam receiving feedback information on one of the predefined feedback resources, and when not received, receives the wide beam on another predefined feedback resource or Receiving the feedback information in an omnidirectional manner;

The wide beam refers to a receiving beam that partially or completely covers the downlink preferred receiving beam and has a larger receiving angle than the downlink preferred receiving beam; and the predefined mapping resource has a predefined mapping relationship with the resource occupied by the uplink information.

Optionally, in the embodiment of the present invention, the feedback information may be expressed in one of the following manners:

The feedback information uses the acknowledgement indication information of the uplink data, uses a negative acknowledgement (NACK) indication to trigger the uplink beam tracking, and uses a positive acknowledgement (ACK) indication to not trigger the uplink beam tracking; or

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the resource indication occupied by the receiving confirmation indication information to trigger the uplink beam tracking. The resource occupied by the receiving confirmation indication information needs to be selected from two predefined feedback resources corresponding to the uplink information. .

Optionally, in an example, the foregoing two predefined feedback resources include a first predefined feedback resource with a current time domain location and a second predefined feedback resource with a time domain location, where the receiving acknowledgement indication information is sent. If the first predefined feedback resource is occupied, the uplink beam tracking is not triggered, and the second predefined feedback resource is used to indicate that the uplink beam tracking is triggered. In addition, the first predefined feedback resource is occupied and the second predefined feedback resource indicator is occupied. The behavior can be reversed.

Optionally, in the embodiment of the present invention, the two predefined feedback resources may be different resources. source.

Step 130: The terminal sends an uplink beam tracking signal to the base station when the uplink beam tracking is triggered according to the feedback information.

The uplink beam tracking signal is a measurement signal required by the receiving end to identify a new uplink preferred transmitting beam.

Optionally, in the embodiment of the present invention, the terminal may send an uplink beam tracking signal to the base station according to the following manner:

The terminal sends an uplink beam tracking signal to the base station on multiple uplink transmit beams according to a pre-defined transmission configuration of the uplink beam tracking signal (the transmission configuration refers to a manner in which the terminal transmits the beam tracking signal in each beam direction); or

The terminal obtains a transmission configuration of the uplink beam tracking signal from the feedback information or other system information sent by the base station, and sends an uplink beam tracking signal to the base station on the multiple uplink transmit beams according to the transmission configuration; or

The system pre-defines the transmission configuration of two or more uplink beam tracking signals, and the terminal obtains the currently used transmission configuration indication information from the feedback information or other system information sent by the base station, and performs multiple transmissions according to the transmission configuration indicated by the indication information. An uplink beam tracking signal is transmitted to the base station on the transmit beam.

Optionally, in the embodiment of the present invention, the sending configuration of the uplink beam tracking signal may include one or more of the following information: a sending period of the uplink beam tracking signal, a sending time of the uplink beam tracking signal, and an uplink beam. The time-frequency domain resource set of the tracking signal, the number of uplink transmit beams that transmit the uplink beam tracking signal, and the mapping relationship between the uplink beam tracking signal and the index of the uplink transmit beam.

Optionally, in an example, the uplink information may be uplink service data, and the time-frequency domain resource set that sends the uplink beam tracking signal may include all or part of the retransmission resource of the uplink service data.

Optionally, in the embodiment of the present invention, the multiple uplink transmit beams include an uplink preferred transmit beam, and an uplink transmit beam adjacent to the uplink preferred transmit beam on one or both sides of the uplink preferred transmit beam.

The above steps 110 to 130 complete the triggering process of the uplink beam tracking.

Optionally, FIG. 5 is a flowchart of an uplink beam tracking method according to Embodiment 1 of the present invention. The method provided in the embodiment shown in FIG. 6 is performed by a terminal, and the method provided in this embodiment may include the following steps. 110 to step 140:

For the implementation of steps 110 to 130 in the embodiment of the present invention, reference may be made to steps 110 to 130 in the example shown in FIG.

Step 140: The terminal receives the first indication information, and updates the currently used uplink preferred transmit beam according to the first indication information, where the first indication information is used to indicate a new uplink preferred transmit beam determined by the base station.

In the embodiment of the present invention, the system pre-defines the relative positional relationship between the time-frequency resource occupied by the first indication information and the time-frequency resource occupied by the uplink beam tracking signal; and the implementation manner of receiving the first indication information sent by the base station by the terminal may include The terminal determines the time domain resource occupied by the first indication information according to the time domain resource and the relative position relationship occupied by the uplink beam tracking signal, and receives the first indication information on the determined time-frequency resource.

The embodiment of the present invention further provides a terminal, as shown in FIG. 6 , which is a schematic structural diagram of a terminal according to Embodiment 1 of the present invention. The terminal provided by the embodiment of the present invention may include:

The uplink information sending module 10 is configured to: send the uplink information to the base station by using the preferred transmit beam in the above line;

The feedback information receiving module 20 is configured to: receive feedback information sent by the base station, where the feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal;

The uplink beam tracking module 30 is configured to: determine whether to trigger uplink beam tracking according to the feedback information received by the feedback information receiving module 20, and send an uplink beam tracking signal to the base station when determining to trigger uplink beam tracking.

Optionally, in the embodiment of the present invention,

The uplink information sent by the uplink information sending module 10 may include uplink service data, or may include an uplink reference signal.

Optionally, in the embodiment of the present invention,

The manner in which the feedback information receiving module 20 receives the feedback information sent by the base station may include:

The feedback information receiving module 20 receives the feedback information sent by the base station in an omnidirectional manner on the predefined feedback resource; or

The feedback information receiving module 20 receives the feedback information sent by the base station by using a wide beam on the predefined feedback resource; or

The uplink information corresponds to two predefined feedback resources, and the feedback information receiving module 20 firstly receives the beam receiving feedback information on one of the predefined feedback resources, and when not received, another predefined feedback resource. Wide beam reception or omnidirectional reception of feedback information;

Optionally, in the embodiment of the present invention, the foregoing feedback information may be expressed in one of the following manners:

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the newly added bit in the receiving confirmation indication information to indicate whether to trigger the uplink beam tracking; or

The feedback information uses the receiving confirmation indication information of the uplink data, triggers the uplink beam tracking by using the negative acknowledgement indication, and does not trigger the uplink beam tracking by using the positive acknowledgement indication; or

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the receiving confirmation indication letter. The resource occupied by the information indicates whether the uplink beam tracking is triggered. The resource occupied by the receiving confirmation indication information needs to be selected from two predefined feedback resources corresponding to the uplink information.

Optionally, in the embodiment of the present invention,

The uplink beam tracking module 30 sends an uplink beam tracking signal to the base station, including:

The uplink beam tracking module 30 sends an uplink beam tracking signal to the base station on multiple uplink transmit beams according to a transmission configuration of the uplink beam tracking signal predefined by the system; or

The uplink beam tracking module 30 obtains a transmission configuration of the uplink beam tracking signal from the feedback information or other system information sent by the base station, and sends an uplink beam tracking signal to the base station on the multiple uplink transmit beams according to the transmission configuration; or

The system pre-defines the transmission configuration of the two or more uplink beam tracking signals, and the uplink beam tracking module 30 obtains the indication information of the currently used transmission configuration from the feedback information or other system information sent by the base station, and according to the transmission configuration indicated by the indication information, Transmitting an uplink beam tracking signal to the base station on multiple uplink transmit beams;

The sending configuration of the uplink beam tracking signal includes one or more of the following information: a sending period of the uplink beam tracking signal, a number of times of sending the uplink beam tracking signal, and a time-frequency domain resource set for transmitting the uplink beam tracking signal, and sending The number of uplink transmit beams of the uplink beam tracking signal, and the mapping relationship between the uplink beam tracking signal and the index of the uplink transmit beam; the plurality of uplink transmit beams include an uplink preferred transmit beam, and a side of the uplink preferred transmit beam or An uplink transmit beam on both sides and adjacent to the upstream preferred transmit beam.

Optionally, in the embodiment of the present invention,

The uplink information may be uplink service data, and the time-frequency domain resource set for transmitting the uplink beam tracking signal may include all or part of the retransmission resource of the uplink service data.

Optionally, in the embodiment of the present invention,

The uplink beam tracking module 30 is further configured to: after transmitting the uplink beam tracking signal to the base station, receive the first indication information sent by the base station, and update the currently used uplink preferred transmit beam according to the first indication information, where the first indication is The information is used to indicate a new uplink preferred transmit beam determined by the base station.

Embodiment 2

This embodiment describes an uplink beam tracking method from the perspective of a base station. As shown in FIG. 7, FIG. 7 is a flowchart of an uplink beam tracking method according to Embodiment 2 of the present invention. The method provided in the embodiment may include the following steps, that is, step 210 to step 230:

Step 210: The base station preferably receives the uplink information sent by the beam receiving terminal.

Step 220: The base station determines whether to trigger uplink beam tracking according to the receiving state of the uplink information.

Optionally, in the embodiment of the present invention, the base station triggers uplink beam tracking when the receiving state of the uplink information meets any one of the following one or more conditions:

Condition 1, the receiving quality of the uplink information is decreased on the uplink preferred receiving beam, and the falling amplitude exceeds the set amplitude threshold;

Condition 2, the receiving quality of the uplink information on the uplink preferred receiving beam is lower than the set receiving quality threshold;

Condition three, did not successfully receive the uplink information;

Condition 4: When the number of retransmissions of the uplink information reaches the set number of retransmission times, the uplink information is not successfully received.

Step 230: The base station sends feedback information to the terminal, where the feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal.

The feedback information adopts the receiving confirmation indication information of the uplink data, triggers the uplink beam tracking by using a negative acknowledgement (NACK) indication, and does not trigger the uplink beam tracking by using a positive acknowledgement (ACK) indication; or,

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the resource indication occupied by the receiving confirmation indication information to trigger the uplink beam tracking, and the resource occupied by the receiving confirmation indication information is selected from two predefined feedback resources corresponding to the uplink information.

Optionally, in the embodiment of the present invention, the base station may send the feedback information in one of the following manners:

The base station sends feedback information to the preferred transmit beam on the predefined feedback resource; or

The base station sends the feedback information by using a wide beam on the predefined feedback resource; or

The base station sends the feedback information omnidirectionally on the predefined feedback resource; or

The uplink information corresponds to two predefined feedback resources; when the uplink beam tracking is not triggered, the base station sends the feedback by using the preferred transmit beam on the first predefined feedback resource of the time domain location in the two predefined feedback resources. The information, when the uplink beam tracking is triggered, the base station sends the feedback information in a wide beam or omnidirectionally on the second predefined feedback resource in the two predefined feedback resources; optionally, the foregoing The predefined feedback resources (ie, the second predefined feedback resources) in the time domain location are located in the time domain resource unit configured to transmit information in a wide beam or omnidirectional in the time domain resource set used by the base station.

The above-mentioned wide beam refers to a transmit beam that partially or partially covers the downlink preferred transmit beam and has a larger transmit angle than the downlink preferred transmit beam; there is a predefined mapping relationship between the predefined feedback resource and the resource occupied by the uplink information.

Optionally, the method provided by the embodiment of the present invention may further include: after the base station determines to trigger the uplink beam tracking, the method further includes: indicating, by using the feedback information or other system information, the sending configuration of the uplink beam tracking signal to the terminal.

Optionally, in the embodiment of the present invention, the sending configuration of the uplink beam tracking signal may include one or more of the following information: a sending period of the uplink beam tracking signal; a sending frequency of the uplink beam tracking signal; and sending the uplink beam The time-frequency domain resource set of the tracking signal; the number of uplink transmit beams that transmit the uplink beam tracking signal; and the mapping relationship between the uplink beam tracking signal and the index of the uplink transmit beam.

Optionally, in an example, the uplink information may be uplink service data, and the time-frequency domain resource set that sends the uplink beam tracking signal may include all or part of the retransmission resource of the uplink service data. By using the retransmission resource to transmit the uplink beam tracking signal, the related design of the uplink beam tracking signal can be simplified. There are two cases in the actual application. One is that the uplink service data is successfully received but the reception quality is degraded, which triggers the uplink beam tracking. In this case, the data does not need to be retransmitted, and the uplink beam tracking signal can be sent on the retransmission resource. If the uplink service data is not successfully received, the uplink beam tracking is triggered. In this case, beam tracking is performed first, and the new priority uplink transmission beam is determined for the terminal, and then the uplink service data is re-aggregated.

Optionally, FIG. 8 is a flowchart of another uplink beam tracking method according to Embodiment 2 of the present invention. The method provided in the embodiment shown in FIG. 8 is performed by a base station, and the method provided in this embodiment may include the following steps, that is, Step 210 to step 240:

Step 220: The base station determines, according to the receiving status of the uplink information, whether to trigger uplink beam tracking.

For the implementation of steps 210 to 230 in the embodiment of the present invention, reference may be made to steps 210 to 230 in the example shown in FIG.

Step 240: The base station receives an uplink beam tracking signal sent by the terminal on multiple uplink transmit beams, determines a new uplink preferred transmit beam, and indicates to the terminal.

Step 240 in the embodiment of the present invention is performed after the base station sends feedback information indicating that the uplink beam tracking is triggered to the terminal, and the base station may receive the received uplink beam tracking signal. The uplink transmit beam in which the optimal uplink beam tracking signal is located is determined as a new uplink preferred transmit beam, and the first indication information is sent to the terminal, where the first indication information is used to indicate a new uplink preferred transmit beam.

Optionally, in the embodiment of the present invention, the system pre-defines the relative positional relationship between the time-frequency resource occupied by the first indication information and the time-frequency resource occupied by the uplink beam tracking signal; and the implementation manner of the first indication information sent by the base station to the terminal The base station may determine, according to the time-frequency resource occupied by the uplink beam tracking signal and the relative positional relationship, the time-frequency resource occupied by the first indication information, and send the first indication information on the determined time-frequency resource.

Optionally, the embodiment of the present invention further provides a base station, as shown in FIG. 9, which is a schematic structural diagram of a base station according to Embodiment 2 of the present invention. The base station provided by the embodiment of the present invention may include:

The uplink information receiving module 50 is configured to: preferably, the uplink information sent by the receiving beam receiving terminal;

The uplink beam tracking module 60 is configured to: determine whether to trigger uplink beam tracking according to the receiving state of the uplink information by the uplink information receiving module 50, and send feedback information to the terminal, where the feedback information is used to indicate uplink beam tracking to the terminal. Trigger status.

Optionally, in the embodiment of the present invention,

The uplink information received by the uplink information receiving module 50 may include uplink service data, or may include an uplink reference signal.

Optionally, in the embodiment of the present invention,

The uplink beam tracking module 60 determines whether to trigger the uplink beam tracking according to the receiving state of the uplink information, and may include: triggering the uplink beam tracking when the receiving state meets any one of the following conditions:

Receiving quality of uplink information on the uplink preferred receive beam decreases, and the magnitude of the drop exceeds a set amplitude threshold;

Did not successfully receive the uplink information;

The feedback information uses the acknowledgement indication information of the uplink data, uses a negative acknowledgement (NACK) indication to trigger uplink beam tracking, and uses a positive acknowledgement (ACK) indication to not trigger uplink beam tracking; or

Optionally, in the embodiment of the present invention,

The implementation manner in which the uplink beam tracking module 60 sends the feedback information to the terminal may include:

The uplink beam tracking module 60 sends the feedback information to the preferred transmit beam on the predefined feedback resource; or

The uplink beam tracking module 60 sends the feedback information in a wide beam on the predefined feedback resource; or

The uplink beam tracking module 60 sends the feedback information omnidirectionally on the predefined feedback resource; or

The foregoing uplink information corresponds to two predefined feedback resources; when the uplink beam tracking is not triggered, the uplink beam tracking module 60 selects the preferred transmit beam on the first predefined feedback resource with the time domain position in the two predefined feedback resources. The feedback information is sent, and when the uplink beam tracking is triggered, the uplink beam tracking module 60 sends the feedback information in a wide beam or omnidirectionally on the second predefined feedback resource with the time domain position in the two predefined feedback resources.

The wide beam refers to a transmit beam that covers all or part of the downlink preferred transmit beam and has a larger transmit angle than the downlink preferred transmit beam; the predefined feedback resource and the uplink information occupy There is a pre-defined mapping relationship between the resources; the second predefined feedback resource is located in a time domain resource unit configured to transmit information in a wide beam or omnidirectional in a time domain resource set used by the base station.

Optionally, in the embodiment of the present invention,

The uplink beam tracking module 60 is further configured to: after determining to trigger the uplink beam tracking, indicate, by using the feedback information or other system information, the sending configuration of the uplink beam tracking signal to the terminal, where the sending configuration of the uplink beam tracking signal includes the following information. One or more: the transmission period of the uplink beam tracking signal, the number of times the uplink beam tracking signal is transmitted, the time-frequency domain resource set for transmitting the uplink beam tracking signal, the number of uplink transmission beams for transmitting the uplink beam tracking signal, and the uplink beam tracking. The mapping relationship between the signal and the index of the uplink transmit beam.

Optionally, in the embodiment of the present invention,

The uplink beam tracking module 60 is further configured to: after transmitting the feedback information to the terminal, receive the uplink beam tracking signal sent by the terminal on the multiple uplink transmit beams, and perform the uplink beam tracking with the best reception quality in the received uplink beam tracking signal. The uplink transmit beam in which the signal is located is determined as a new uplink preferred transmit beam, and the first indication information is sent to the terminal, where the first indication information is used to indicate the new uplink preferred transmit beam.

In the above embodiment, the base station determines whether to trigger the uplink beam tracking according to the change of the received quality of the uplink information, and indicates the trigger state of the uplink beam tracking to the terminal through the feedback message, that is, whether the uplink beam tracking is triggered, and the uplink preferred transmit beam can be effectively found. Changed state and trigger related uplink beam tracking in time. Compared with the related technology, the delay of the trigger indication process is saved, the influence of the beam tracking process on the business continuity is reduced, and the user experience is improved.

The above solution also ensures the robustness of the terminal to the feedback information through the sending and receiving of the feedback information, thereby ensuring the effective triggering and indication of the uplink beam tracking process, and providing the necessary conditions for re-alignment of the transmitting and receiving beams. The above solution also provides a manner in which the terminal uses the retransmission resources of the uplink data to perform uplink beam tracking signal transmission.

Examples of several applications of the present invention are described below.

Example one

As shown in FIG. 10, it is a schematic diagram of an application scenario provided by the first example of the present invention. In the case that the terminal rotates, the preferred transmit beam of the original UE side is Bt0, and the uplink preferred transmit beam occurs due to rotation. The change is as shown in FIG. 11 , which is a schematic diagram of a signaling flow of an uplink beam tracking method according to the first example of the present invention, which is described in detail as follows:

Step 1: The UE sends the uplink service data on the time-frequency resource given by the uplink grant (UL grant) by using the uplink preferred transmit beam Bt0. Accordingly, the HBS receives the receive beam Br0.

FIG. 12 is a schematic flowchart of a flow according to an example 1 of the present invention. A subframe labeled with an uplink grant indicates that uplink grant information is included in the subframe. Similarly, the subsequent subframes marked with uplink data (UL data), ACK/NACK, uplink beam tracking signal, preferred beam feedback, etc., respectively, indicate that the corresponding content is included in the corresponding subframe, and is not the content. A resource that occupies the entire sub-frame.

Step 2: The HBS determines whether to trigger uplink beam tracking according to the receiving status of the uplink service data, where it is assumed to trigger uplink beam tracking;

The receiving state in the first example may include whether uplink information is received, and the uplink information is, for example, uplink service data or an uplink reference signal. If received, the uplink information may further include a receiving quality.

The HBS does not receive the uplink service data in the corresponding subframe. Therefore, the HBS determines that the uplink preferred transmit beam has changed, and determines to trigger the uplink beam tracking process.

Step 3: The HBS indicates to the UE to trigger uplink beam tracking by using feedback information corresponding to the uplink service data.

The feedback information in the first example uses the receiving acknowledgement indication information of the uplink service data. In addition to indicating whether the uplink service data is received, the received acknowledgement indication information also has 1 bit information indicating that uplink beam tracking needs to be performed. In practical applications, the HBS is used. The content of the feedback information sent to the UE is 01, the high 0 indicates that no uplink service data is received, that is, the negative acknowledgement (NACK), and the low 1 indicates that the uplink beam tracking needs to be triggered.

The manner in which the HBS sends the feedback information: the HBS still uses the original downlink preferred transmit beam to send the feedback information. In the system corresponding to the first example, the UE is required to adopt the downlink preferred reception when receiving the feedback information of the uplink service data. A wide beam corresponding to the beam, the wide beam partially or completely covering the downlink preferred receive beam and having a larger reception angle to improve the robustness of the received feedback information.

FIG. 13 is a schematic diagram of a feedback information transmission manner provided by the first embodiment of the present invention. The wide beam corresponding to the downlink preferred reception beam Br0 is Br0′, and the UE preferably transmits the beam direction according to the uplink. When the change occurs, the downlink preferred receive beam also has a large probability of change, and the uplink beam tracking needs to be obtained by receiving the feedback information, so that more reliable reception feedback information is needed. As shown in Fig. 10, in this example, since the terminal has rotated at a certain angle, Br0 no longer faces the HBS, but Br0' can still receive the feedback information sent by Bt0. Therefore, the system pre-determines: when receiving the feedback information, the UE adopts a receiving beam that covers the downlink preferred receiving beam in whole or in part and receives a larger angle. When the UE rotates at a certain angle, the feedback information may also be received to improve the feedback information. Receive the robustness of the trigger information.

The UE receives the feedback information and identifies that the uplink beam tracking is currently triggered.

Step 4: The UE sends an uplink beam tracking signal on a predefined time-frequency resource.

In the first example, the resources occupied by the uplink beam tracking signal may be predefined by the system (as agreed in the standard or protocol) or configured by the HBS to the UE in advance. The HBS may send the configuration information of the uplink beam tracking signal to the UE through a dedicated message, and indicate the resource occupied by the uplink beam tracking signal in the transmission configuration information.

The transmission configuration is as shown in FIG. 14 , which is a schematic diagram of an uplink beam tracking signal transmission pattern provided by example 1 of the present invention, where the sending configuration of the uplink beam tracking signal may include:

a time-frequency domain resource set for transmitting an uplink beam tracking signal, wherein the time domain ranges all or part of the symbols of the fourth subframe after the subframe in which the feedback information is located (eg, a partial symbol, a previous time slot), where the frequency domain is located The starting position of the RB is specifically calculated by the identifier code CRNTI of the UE, and the number of occupied RBs is predefined to be one.

The number of beams that need to transmit the uplink beam tracking signal is seven (the uplink preferred transmit beam Bt0 and each of the three beams adjacent to each other are selected), and FIG. 14 also shows the pattern of the uplink beam tracking signal transmitted on each beam. Each uplink beam tracking signal occupies a resource of one RE, the transmission period is 0.5 ms, and the number of times the uplink beam tracking signal is transmitted in each beam direction is two times. As in this example one The UE has only two RF links, so it can transmit up to two beam directions at the same time.

The information in the transmission configuration may also include a mapping relationship between the uplink beam tracking signal and an index of the uplink transmit beam.

Step 5: The HBS adopts a pre-configured uplink beam tracking signal transmission configuration, receives an uplink beam tracking signal on a specified resource, and uses a beam with an optimal reception quality (such as received power, signal to noise ratio, etc.) in the uplink beam tracking signal as a new beam. The uplink preferably transmits the beam. In the first example, Bt1 is the new uplink preferred transmit beam direction. The HBS indicates the new uplink preferred transmit beam to the UE.

In the first example, the base station preferably transmits the beam, or transmits the information in a wide beam, or transmits the indication information of the new uplink preferred transmit beam in an omnidirectional manner, which is also referred to as the first indication information in the embodiment of the present invention, where the width is A beam refers to a transmit beam that partially or fully covers a downlink preferred transmit beam and that receives a larger angle than the downlink preferred transmit beam. In the first example, the system pre-defines the relative positional relationship between the time domain resource occupied by the first indication information and the time domain resource occupied by the uplink beam tracking signal, and the HBS and the terminal can use the time domain resource occupied by the uplink beam tracking signal and the The relative position relationship determines a time domain resource occupied by the indication information. However, the invention is not limited to this.

The indication information of the uplink preferred transmit beam may be the identification information of the Bt1. For example, the uplink beam tracking signal implies beam identification information, where Bt1 corresponds to 001, the HBS indicates 001 to the UE, or the preferred beam Bt1 that the HBS will identify. The index of the time-frequency resource or the beam tracking signal is fed back to the UE, and the UE itself determines which beam direction is. For example, the HBS feeds back the RE2 of the symbol 1 to the UE, and the UE determines that the beam transmitted on the corresponding resource is Bt1, and determines it as the uplink preferred transmit beam.

It is noted that, since the feedback information indicates that the uplink service data is not successfully received, after re-determining the preferred transmit and receive beams, the UE will retransmit the previous uplink service data on the new uplink preferred transmit beam.

Example two

As shown in FIG. 9 , which is a schematic diagram of an application scenario provided by example 2 of the present invention, in the case of the rotation of the terminal, the preferred transmit beam of the original UE side is Bt0, and the uplink transmit beam is preferred due to rotation. There has been a change, and this example is another method of uplink beam tracking. The difference from the first example is that the manner in which the feedback information is transmitted is different. The signaling flow is as shown in FIG. 15 , which is a signaling flow diagram of an uplink beam tracking method provided by example 2 of the present invention, and the detailed description is as follows:

Steps 1 and 2: The uplink service data is sent to the UE, and the HBS triggers uplink beam tracking according to the receiving state of the uplink service data. The implementation is the same as that of the first example, and will not be described here.

Step 3: The HBS indicates the beam tracking trigger to the UE by using feedback information (dedicated indication information) corresponding to the uplink service data.

In the second example, the HBS indicates the triggering of the uplink beam tracking to the UE by using the dedicated indication information. For example, the downlink control indication type is added to the physical downlink control channel, and the 1 bit information indicates that the uplink beam tracking needs to be performed. In practical applications, the HBS is used. The content of the feedback information sent to the UE is 1, indicating that uplink beam tracking needs to be performed. In another implementation manner, it may also be indicated by a Radio Resource Control (RRC) message.

The method for transmitting the feedback information by the HBS is as shown in FIG. 16 , which is a schematic diagram of a feedback information transmission manner provided by the second embodiment of the present invention. In the system corresponding to the second embodiment, the uplink beam tracking is triggered to enhance the feedback information. For the robustness of the transmission, the HBS transmits the feedback information using a wide beam Bt0' that is wider than the original downlink preferred transmit beam Bt0 and that covers all or part of Bt0.

The manner in which the UE receives the feedback information: the UE is configured to adopt a wide receiving beam corresponding to the downlink preferred receiving beam when receiving the feedback information of the uplink service data, so as to improve the robustness of the received feedback information. In FIG. 16, the wide beam corresponding to the downlink preferred receive beam Br0 is Br0'. When the direction of the preferred uplink transmit beam of the UE changes, the downlink preferred receive beam also has a large probability of change, and the uplink beam tracking needs to receive feedback information. Obtained, so it is necessary to receive the feedback information more reliably. As shown in Fig. 10, in the second example, since the terminal rotates at a certain angle, Br0 no longer faces the HBS, but Br0' can still receive the feedback information sent by Bt0. Therefore, the system pre-determines that the UE adopts a wide beam corresponding to the downlink preferred receiving beam when receiving the feedback information, and may receive the feedback information when the UE rotates at a certain angle, thereby improving the receiving trigger information. Great. The wide beam here is larger than the downlink preferred receive beam receive angle and covers all or part of the original downlink preferred receive beam.

The terminal can measure its own rotation direction to determine the actual angle of the wide beam. For example, if the angle of the wide beam is preset, the terminal can take the center direction of the wide beam as the downlink preference. The center direction of the receiving beam may also be shifted to a certain angle of the terminal rotation direction as the center direction of the wide beam based on the center direction of the downlink preferred receiving beam.

The UE receives the feedback information and identifies that the uplink beam tracking has been triggered.

Steps 4 and 5: The uplink beam tracking signal is sent by the UE on the predefined time-frequency resource, and the HBS identifies the uplink preferred transmit beam and indicates to the UE. The implementation process is the same as steps 4 and 5 of Example 1, and will not be described here.

Example three

As in the first two examples, in the scenario shown in FIG. 10, the third example is an example of implicitly indicating an uplink beam tracking trigger by different positions of the feedback information. The detailed description is as follows:

The difference from the first two examples is that the 1 bit indicator bit is not added to the feedback information in this example, but the trigger of the uplink beam tracking is implicitly indicated to the UE by the time-frequency resource occupied by the message. The following focuses on how to send feedback information:

In the third example, the uplink information corresponds to two predefined feedback resources, and the two predefined feedback resources may be staggered in the time domain, for example, including a first predefined feedback resource and a time domain location in the first predefined feedback resource. The second predefined feedback resource is followed, but the invention is not limited thereto and may be staggered in the frequency domain. The mapping relationship between different sending positions of the feedback information and the uplink beam tracking triggering state may be determined in a manner predefined by the system or in a manner that the HBS configures the UE in advance. As shown in FIG. 17, a flow sequence diagram is provided in the third embodiment of the present invention. When the HBS determines that the uplink beam tracking process is not triggered according to the reception of the uplink service data, the previous subframe (the first predefined time-frequency resource) Sending feedback information; when the uplink beam tracking process is triggered, the feedback information is sent in a subsequent subframe (second predefined time-frequency resource).

For the manner in which the feedback information is sent, when the uplink beam tracking is not triggered, on the first predefined time-frequency resource, the HBS sends the feedback information to the preferred transmit beam, which is only used to indicate to the UE whether the uplink service data is successfully received, and The feedback information will not be sent on the second predefined time-frequency resource (the idle second predefined time-frequency resource can be used for other transmissions); when the uplink beam tracking is triggered, the HBS will not be in the first predefined time-frequency The feedback information is sent on the resource, but is sent on the second predefined time-frequency resource, and the sending manner may be any one of the methods described in Examples 1 and 2. The feedback information is transmitted to a transmission, or a wide beam.

Optionally, the second predefined time-frequency resource in the third example is configured in a time-frequency resource unit of a wide beam transmission or an omnidirectional transmission in a time-frequency resource set used by the base station, where the wide beam is transmitted or omnidirectionally transmitted. The domain resource unit may occupy a part of subframes or symbols, and the base station uses wide beam or omnidirectional transmission downlink information on these subframes and symbols.

On the UE side, the following is the preferred receive beam receiving feedback information on the first predefined time-frequency resource. If the feedback information is received, the uplink service data is re-transmitted according to the uplink service data receiving status indicated in the feedback information. Data; if the first predefined time-frequency resource is not received on the first predefined time-frequency resource, waiting for the arrival of the second predefined time-frequency resource, and receiving the feedback information by using omnidirectional reception or wide beam.

Example four

As shown in FIG. 18, it is a schematic diagram of an application scenario provided by example 4 of the present invention. In the case of the terminal mobile, the preferred transmit beam of the original UE side is Bt0, and the uplink preferred transmit beam occurs due to the movement. As shown in FIG. 19, the signaling process of the uplink beam tracking method is shown in FIG. 19, which is a signaling flow diagram of an uplink beam tracking method provided in Example 4 of the present invention. :

Steps 1 and 2: The uplink service data is sent to the UE, and the HBS triggers uplink beam tracking according to the receiving state of the uplink service data. The actual mode is the same as that of the first example, and will not be described here.

Step 3: The HBS indicates the beam tracking trigger to the UE through the feedback information (reception confirmation indication information) corresponding to the uplink service data, and configures the transmission mode of the uplink beam tracking signal.

In addition to the indication that the uplink service data is not received, the one-bit information indicates that the uplink beam tracking needs to be performed. In the fourth example, the information bits are used to indicate the resource configuration of the uplink beam tracking signal. In an actual application, in the fourth example, the HBS sends the feedback information content to the UE as “0100”, where the high bit 0 represents that the uplink service data is not received, that is, the NACK, and the second bit 1 represents that the uplink beam tracking needs to be performed. The lower two bits 00 represent the configured uplink beam tracking signal transmission mode. In the fourth example, the transmission modes of four kinds of uplink beam tracking signals (as stipulated in the standard/protocol) are pre-agreed: 00, 01, 10, and 11, and the meanings are shown in Table 1 (the contents in Table 1 are only examples):

Table 1

The HBS sends the feedback information in the following manner: the HBS transmits the feedback information by using a sector corresponding to the downlink preferred transmit beam (Sector 1) (a sector is a special case of the wide beam), wherein the sector corresponding to the downlink preferred transmit beam Refers to the sector to which the beam belongs, that is, the extent to which the sector covers the beam. The sector transmission may be to transmit feedback information using an antenna configuration similar to the 120 degree sector of the cellular network in the related art, so that the coverage of the feedback information is wider.

The manner in which the UE receives the feedback information is: in the system corresponding to the fourth example, the UE is configured to adopt the wide receiving beam corresponding to the downlink preferred receiving beam when receiving the feedback information about the uplink service data, so as to improve the robustness of the received feedback information. Sex.

In a practical application, as shown in FIG. 20, it is a schematic diagram of a feedback information transmission manner provided by example 4 of the present invention, and a wide beam corresponding to the downlink preferred reception beam Br0 is Br0′, because the UE preferably transmits the uplink direction of the transmit beam. When the change occurs, the downlink preferred receive beam also has a large probability of change, and the uplink beam tracking needs to be obtained by receiving the feedback information, so it is necessary to receive the feedback information more reliably. In the fourth example, because the terminal has a certain angle of rotation, Br0 is no longer facing the HBS, but Br0' can still receive the feedback information sent by Bt0. Therefore, the system presupposes that the UE receives the feedback information corresponding to the downlink preferred receive beam and receives the wider receive beam. When the UE rotates at a certain angle, the feedback information may also be received. The robustness of receiving trigger information. The wide beam here is more than the original downlink preferred receive beam receive angle Large, and covers the original downlink preferred receive beam.

In the fourth example, according to the configuration in the feedback information, the UE will send an uplink beam tracking signal in the last two symbols of the subframe in which the feedback information is located. FIG. 21 is a schematic diagram of an uplink beam tracking signal transmission pattern provided by Example 4 of the present invention. The resource that transmits the uplink beam tracking signal is the last two symbols of the subframe n where the downlink feedback information is located. In this manner, the same subframe includes both the uplink symbol and the downlink symbol, and the latter two symbols are configured as uplink symbols. The uplink beam tracking signal is sent; the UE selects two adjacent beams (four in total) on both sides of the uplink preferred transmit beam to transmit an uplink beam tracking signal. Since the UE of the fourth example has four radio frequency links, it can simultaneously Beam tracking signals are transmitted on these 4 beams.

In the fourth example, since the uplink transmission changes, the uplink preferred transmit beam is not configured to transmit the uplink beam tracking signal.

Step 5: The HBS identifies the uplink beam tracking signal on the specified resource according to the transmission configuration of the pre-configured uplink beam tracking signal, and selects the beam with the best receiving quality (such as the maximum receiving power or the SNR) in the uplink beam tracking signal. The uplink transmit beam, in the fourth example, Bt3 is the new uplink preferred transmit beam direction. The HBS indicates the foregoing identification result to the UE, and the indication manner of the uplink preferred transmit beam indication information may be the same as the feedback information in step 3.

Example five

As shown in FIG. 18, in the scenario where the terminal moves to trigger the uplink beam tracking, that is, the preferred transmit beam of the original UE side is Bt0. The uplink preferred transmit beam changes due to the mobile, and the direction of the transmit and receive beams of the base station side also changes. This example describes the case where the uplink beam tracking signal uses the uplink service data to retransmit the resource. The signaling flow is shown in FIG. 19. FIG. 22 is a schematic flowchart diagram of the process provided in Example 5 of the present invention, and the detailed description is as follows:

Step 1: The UE sends uplink service data on the time-frequency resource given by the uplink grant by using the uplink preferred transmit beam Bt0. Correspondingly, the HBS receives the receive beam Br0.

Step 2: The HBS triggers uplink beam tracking according to the receiving state of the uplink service data.

Although the HBS successfully receives the uplink service data, but the reception quality decreases by a predefined level (for example, the error rate, the packet loss rate is higher than a certain percentage, such as 8%) compared with the value of the previous statistical period, HBS It is judged that the relative position change with the UE is likely to occur, and the uplink beam tracking needs to be triggered.

Step 3: The HBS indicates a beam tracking trigger to the UE by using feedback information (reception confirmation indication information) corresponding to the uplink service data, and configures a transmission mode of the uplink beam tracking signal.

In addition to indicating that the uplink service data is not received, the reception confirmation indication information further indicates that uplink beam tracking is required. In an actual application, in the fifth example, the HBS sends the feedback information content to the UE as “11”, where the high bit 1 represents the successful reception of the uplink service data, that is, the ACK, and the low bit 1 represents that the uplink beam tracking needs to be performed.

In addition, the resource configuration of the uplink beam tracking signal is configured in advance: the retransmission resource corresponding to the uplink service data is used (the uplink uses the synchronous retransmission mechanism, so the retransmission resource corresponding to the uplink service data is pre-agreed, for example The fourth subframe after the feedback subframe and the frequency domain are the same as the resources for transmitting the uplink service data. The number of beams that need to transmit the beam tracking signal is 7 and the number of transmissions is 4.

The manner in which the HBS sends the feedback information and the manner in which the UE receives the feedback information are the same as in the fourth example, and are not described here.

Step 4: The UE sends an uplink beam tracking signal on the retransmission resource corresponding to the uplink service data.

In the fifth example, according to the system configuration, the UE will send an uplink beam tracking signal in the retransmission resource. As shown in FIG. 23, it is a schematic diagram of an uplink beam tracking signal transmission pattern provided by example 5 of the present invention. The resource for transmitting the uplink beam tracking signal is the last four symbols of the subframe n where the downlink feedback information is located; The beam and three adjacent beams (7 in total) are used to transmit the uplink beam tracking signal. Since the UE has two RF links, the beam can be transmitted on both beams simultaneously. Trace signal. The number of times sent is 4. In practical applications, the beam tracking signal can be transmitted according to the pattern as illustrated in FIG.

Step 5: The HBS adopts a pre-configured uplink beam tracking signal transmission configuration, receives a beam tracking signal on a specified resource, and uses a beam with the best reception quality (such as the maximum received power or signal to noise ratio) as the preferred uplink transmit beam. In Example 5, Bt3 is the new uplink preferred transmit beam direction. The HBS indicates the foregoing identification result to the UE, and the indication manner of the uplink preferred transmit beam indication information may be the same as the feedback information in step 3.

It is noted that, since the feedback information indicates that the uplink service data has been successfully received, after re-determining the preferred transmit and receive beams, the UE will transmit the subsequent uplink service data on the new uplink preferred transmit beam.

Example six

In the scenario where the uplink information sent by the UE is an uplink reference signal, as shown in FIG. 10, the uplink transmit target beam of the original UE side is Bt0, and the uplink preferred transmit beam changes due to rotation. As shown in FIG. 24, it is a schematic diagram of a signaling flow of an uplink beam tracking method according to Example 6 of the present invention, which is described in detail as follows:

Step 1: The UE sends an uplink reference signal by using the uplink preferred transmit beam Bt0. Correspondingly, the HBS is preferably received by the receive beam Br0.

FIG. 25 is a schematic flowchart diagram of a sixth embodiment of the present invention. The subframe labeled with an uplink reference signal indicates that the uplink reference signal is included in the subframe, that is, the uplink reference signal occupies part of the resources in the subframe. unit. Similarly, subsequent subframes labeled with feedback information, uplink beam tracking signals, preferred beam feedback, etc., respectively, indicate that the content is included in the corresponding subframe, and not that the content occupies resources of the entire subframe.

Step 2: The HBS determines to trigger the uplink beam tracking according to the receiving state of the uplink reference signal.

The HBS measures the uplink reference signal sent by the UE. Compared with the previous statistical period, the receiving quality decreases by a certain level. For example, according to the measurement result of the uplink reference signal, the MCS used for the uplink data transmission decreases from level 10 to level 4, and decreases. 6 levels, greater than the preset threshold (or called threshold, if set to 5 levels), so the HBS judges that the uplink preferred transmit beam is potentially changing, indeed The uplink beam tracking process is triggered.

Step 3: The HBS indicates an uplink beam tracking trigger to the UE by using feedback information (dedicated indication information) corresponding to the uplink reference signal.

In an actual application, the HBS sends a feedback information content to the UE, which indicates that uplink beam tracking needs to be performed. In the sixth example, when the uplink beam tracking is triggered, the uplink beam tracking signal is sent in a system predefined manner.

If the system does not pre-define the transmission mode of the uplink beam tracking signal, the feedback information may further include configuration information about the uplink beam tracking signal transmission mode. Alternatively, the system pre-defines a transmission manner of multiple uplink beam tracking signals, and the feedback information indicates which configuration is currently applied (ie, indicates a configuration index to the terminal).

The HBS sends the feedback information to the HBS. The HBS still uses the original downlink preferred transmit beam to send the feedback information. In the system corresponding to the sixth example, the UE is required to use the downlink preference when receiving the feedback information of the uplink service data. Receive a wide receive beam corresponding to the beam to improve the robustness of the received feedback information.

The manner in which the UE receives the feedback information is as follows: as shown in FIG. 13, the wide beam corresponding to the downlink preferred receiving beam Br0 is Br0'. When the direction of the preferred uplink transmit beam of the UE changes, the downlink preferred receiving beam also has a large probability of changing. And the uplink beam tracking needs to be obtained by receiving the feedback information, so it is necessary to receive the feedback information more reliably. As shown in the figure, in this example, since the terminal has a certain angle of rotation, Br0 is no longer facing the HBS, but Br0' can still receive the feedback information sent by Bt0. Therefore, the system presupposes that the UE receives the feedback information corresponding to the downlink preferred receive beam and receives the wider receive beam. When the UE rotates at a certain angle, the feedback information may also be received. The robustness of receiving trigger information. The wide beam here is larger than the original downlink preferred receive beam reception angle and covers the original downlink preferred receive beam.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments. Through the description of the above embodiments, those skilled in the art can clearly understand that the foregoing embodiment method can be implemented by means of software plus a necessary general hardware platform, and of course, can also be through hardware, but in many cases, the former is better. Implementation. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium (such as ROM/RAM, disk). The optical disc includes a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method described in various embodiments of the present invention.

The above is only the embodiment and the optional embodiments of the present invention, and is not intended to limit the protection of the embodiments of the present invention. Various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium on a corresponding hardware platform (according to The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

According to the technical solution provided by the embodiment of the present invention, the base station determines whether to trigger the uplink beam tracking according to the change of the received quality of the uplink information, and indicates the trigger state of the uplink beam tracking to the terminal through the feedback message, that is, whether the uplink beam tracking is triggered. It is found that the uplink preferably transmits the state of the beam change, and triggers the relevant uplink beam tracking in time. Compared with the related technology, the delay of the trigger indication process is saved, the influence of the beam tracking process on the business continuity is reduced, and the user experience is improved. The technical solution provided by the embodiment of the present invention ensures the robustness of the terminal to the feedback information through the sending and receiving manner of the feedback information, thereby ensuring the effective triggering and indication of the uplink beam tracking process, and providing the re-alignment of the transmitting and receiving beams. Necessary conditions. The above solution also provides a manner in which the terminal uses the retransmission resources of the uplink data to perform uplink beam tracking signal transmission.

Claims

An uplink beam tracking triggering method includes:

Preferably, the terminal sends a uplink information to the base station by using a preferred transmit beam;

Receiving, by the terminal, feedback information sent by the base station, where the feedback information is used to indicate, to the terminal, a trigger status of uplink beam tracking;

When the terminal determines to trigger uplink beam tracking according to the feedback information, the terminal sends an uplink beam tracking signal to the base station.
The method of claim 1 wherein

The uplink information includes uplink service data or includes an uplink reference signal.
The method of claim 1 wherein

Receiving, by the terminal, the feedback information sent by the base station, including:

Receiving, by the terminal, the feedback information sent by the base station in an omnidirectional manner on a predefined feedback resource; or

Receiving, by the terminal, the feedback information sent by the base station by using a wide beam on a predefined feedback resource; or

The uplink information corresponds to two predefined feedback resources, and the terminal first receives the feedback information on a predefined feedback resource on one of the predefined feedback resources, and when not received, on another predefined feedback resource. Receiving the feedback information in a wide beam or omnidirectionally;

The wide beam refers to a receiving beam that partially or completely covers the downlink preferred receiving beam and has a larger receiving angle than the downlink preferred receiving beam; and the predefined feedback resource exists between the resource occupied by the uplink information Predefined mappings.
The method according to claim 1 or 2, wherein

The feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal, including:

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the newly added bit in the receiving confirmation indication information to indicate whether to trigger uplink beam tracking; or

The feedback information adopts the receiving confirmation indication information of the uplink data, triggers the uplink beam tracking by using the negative acknowledgement NACK indication, and does not trigger the uplink beam tracking by using the positive acknowledgement ACK indication; or

The feedback information uses dedicated indication information, and uses the dedicated indication information to indicate whether to trigger uplink beam tracking; or

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the resource indication occupied by the receiving confirmation indication information to indicate whether to trigger uplink beam tracking, where the resource occupied by the receiving confirmation indication information is from two predefined presets corresponding to the uplink information. Select from feedback resources.
The method according to any one of claims 1 to 3, wherein

Sending, by the terminal, an uplink beam tracking signal to the base station, including:

Transmitting, by the terminal, the uplink beam tracking signal to the base station on multiple uplink transmit beams according to a transmission configuration of a preset uplink beam tracking signal; or

And acquiring, by the terminal, the sending configuration of the uplink beam tracking signal from the feedback information or other system information sent by the base station, and sending the uplink beam tracking to the base station on multiple uplink transmit beams according to the sending configuration. Signal; or,

The system pre-defines a transmission configuration of two or more uplink beam tracking signals, and the terminal acquires, from the feedback information or other system information sent by the base station, indication information of a currently used transmission configuration, which is indicated according to the indication information. The transmitting configuration transmits the uplink beam tracking signal to the base station on a plurality of uplink transmit beams.
The method of claim 5, wherein

The plurality of uplink transmit beams includes the uplink preferred transmit beam, and an uplink transmit beam that is on one or both sides of the uplink preferred transmit beam and adjacent to the uplink preferred transmit beam.
The method of claim 5, wherein

The sending configuration of the uplink beam tracking signal includes one or more of the following information:

The transmission period of the uplink beam tracking signal;

The number of times the uplink beam tracking signal is transmitted;

Sending a time-frequency domain resource set of the uplink beam tracking signal;

The number of uplink transmit beams that transmit uplink beam tracking signals;

The mapping relationship between the uplink beam tracking signal and the index of the uplink transmit beam.
The method of claim 7 wherein

The uplink information is uplink service data, and the time-frequency domain resource set for transmitting the uplink beam tracking signal includes all or part of the retransmission resources of the uplink service data.
An uplink beam tracking method includes:

The terminal performs uplink beam tracking triggering according to the method of any one of claims 1 to 8, and sends an uplink beam tracking signal to the base station when determining to trigger uplink beam tracking;

The terminal receives the first indication information sent by the base station, and updates the currently used uplink preferred transmit beam according to the first indication information, where the first indication information is used to indicate a new uplink preference determined by the base station. Transmit beam.
The method of claim 9 wherein

The system pre-defines a relative positional relationship between a time-frequency resource occupied by the first indication information and a time-frequency resource occupied by the uplink beam tracking signal;

Receiving, by the terminal, the first indication information sent by the base station, the determining, by the terminal, the time domain resource occupied by the first indication information according to the time domain resource occupied by the uplink beam tracking signal and the relative position relationship And receiving the first indication information on the determined time-frequency resource.
An uplink beam tracking triggering and indication method includes:

Preferably, the base station is configured to receive uplink information sent by the beam receiving terminal;

Determining, by the base station, whether to trigger uplink beam tracking according to the receiving state of the uplink information;

The base station sends feedback information to the terminal, where the feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal.
The method of claim 11 wherein

The uplink information includes uplink service data or includes an uplink reference signal.
The method of claim 11 wherein

The determining, by the base station, whether to trigger uplink beam tracking according to the receiving state of the uplink information, including:

The base station triggers uplink beam tracking when the receiving state satisfies any one of the following one or more conditions:

Receiving quality of the uplink information on the uplink preferred receive beam decreases, and the magnitude of the drop exceeds a set amplitude threshold;

Receiving quality of the uplink information on the uplink preferred receive beam is lower than a set reception quality threshold;

The uplink information was not successfully received;

When the number of retransmissions of the uplink information reaches the set number of retransmission times, the uplink information is not successfully received.
The method of claim 11 wherein

The feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal, including:

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the newly added bit in the receiving confirmation indication information to indicate whether to trigger uplink beam tracking; or

The feedback information adopts the receiving confirmation indication information of the uplink data, triggers the uplink beam tracking by using the negative acknowledgement NACK indication, and does not trigger the uplink beam tracking by using the positive acknowledgement ACK indication; or

The feedback information uses dedicated indication information, and uses the dedicated indication information to indicate whether to trigger uplink beam tracking; or

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the resource indication occupied by the receiving confirmation indication information to indicate whether to trigger uplink beam tracking, where the resource occupied by the receiving confirmation indication information is from two predefined presets corresponding to the uplink information. Select from feedback resources.
The method according to any one of claims 11 to 13, wherein

Sending, by the base station, feedback information to the terminal, including:

Sending, by the base station, the feedback information by using a preferred transmit beam on a predefined feedback resource; or

Transmitting, by the base station, the feedback information by using a wide beam on a predefined feedback resource; or

Sending, by the base station, the feedback information in an omnidirectional manner on a predefined feedback resource; or

The uplink information corresponds to two predefined feedback resources; when the uplink beam tracking is not triggered, the base station preferably transmits the following lines on the first predefined feedback resource with the time domain position in the two predefined feedback resources. The beam transmits the feedback information, and when the uplink beam tracking is triggered, the base And transmitting, by the wide beam, the omnidirectional transmission of the feedback information on the second predefined feedback resource in the two predefined feedback resources;

The wide beam refers to a transmit beam that covers the downlink preferred transmit beam in whole or in part and has a larger transmit angle than the downlink preferred transmit beam; the pre-defined feedback resource exists between the resource occupied by the uplink information and the uplink information. Predefined mappings.
The method of claim 15 wherein

The second predefined feedback resource is located in a time domain resource unit configured to transmit information in a wide beam or omnidirectional direction in a time domain resource set used by the base station.
The method according to any one of claims 11 to 14, 16 wherein

After the base station determines to trigger the uplink beam tracking, the method further includes: the base station indicating, by using the feedback information or other system information, the sending configuration of the uplink beam tracking signal to the terminal.
The method of claim 17, wherein

The sending configuration of the uplink beam tracking signal includes one or more of the following information:

The transmission period of the uplink beam tracking signal;

The number of times the uplink beam tracking signal is transmitted;

Sending a time-frequency domain resource set of the uplink beam tracking signal;

The number of uplink transmit beams that transmit uplink beam tracking signals;

The mapping relationship between the uplink beam tracking signal and the index of the uplink transmit beam.
The method of claim 18, wherein

The uplink information is uplink service data, and the time-frequency domain resource set for transmitting the uplink beam tracking signal includes all or part of the retransmission resources of the uplink service data.
An uplink beam tracking method includes:

The base station performs the triggering and indication of the uplink beam tracking according to the method according to any one of claims 11 to 19, and uses the feedback information to indicate the trigger state of the uplink beam tracking to the terminal;

After the base station determines to trigger the uplink beam tracking, and sends the feedback information to the terminal, the method further includes:

The base station receives an uplink beam tracking signal sent by the terminal on multiple uplink transmit beams, and determines an uplink transmit beam in which the uplink beam tracking signal with the best reception quality is received as a new uplink preference in the received uplink beam tracking signal. Transmitting a beam and transmitting first indication information to the terminal, where the first indication information is used to indicate the new uplink preferred transmit beam.
The method of claim 20, wherein

The system pre-defines a relative positional relationship between a time-frequency resource occupied by the first indication information and a time-frequency resource occupied by the uplink beam tracking signal;

The sending, by the base station, the first indication information to the terminal, the determining, by the base station, the time-frequency resource occupied by the first indication information according to the time-frequency resource occupied by the uplink beam tracking signal and the relative position relationship, Transmitting the first indication information on the determined time-frequency resource.
A terminal, comprising:

The uplink information sending module is configured to: send the uplink information to the base station by using the preferred transmit beam in the above line;

The feedback information receiving module is configured to: receive feedback information sent by the base station, where the feedback information is used to indicate, to the terminal, a trigger status of uplink beam tracking;

The uplink beam tracking module is configured to: determine whether to trigger uplink beam tracking according to the feedback information received by the feedback information receiving module, and send an uplink beam tracking signal to the base station when determining to trigger uplink beam tracking.
The terminal according to claim 22, wherein

The uplink information sent by the uplink information sending module includes uplink service data, or includes an uplink reference signal.
The terminal according to claim 22, wherein

The feedback information receiving module receives the feedback information sent by the base station, including:

The feedback information receiving module receives the feedback information sent by the base station in an omnidirectional manner on a predefined feedback resource; or

The feedback information receiving module receives the feedback information sent by the base station by using a wide beam on a predefined feedback resource; or

The uplink information corresponds to two predefined feedback resources, and the feedback information receiving module is first The feedback signal is received by the following preferred receive beam on one of the predefined feedback resources, and when not received, the feedback information is received in a wide beam or omnidirectionally on another predefined feedback resource;

The wide beam refers to a receiving beam that partially or completely covers the downlink preferred receiving beam and has a larger receiving angle than the downlink preferred receiving beam; and the predefined feedback resource exists between the resource occupied by the uplink information Predefined mappings.
The terminal according to claim 22 or 23, wherein

The feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal, including:

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the newly added bit in the receiving confirmation indication information to indicate whether to trigger uplink beam tracking; or

The feedback information adopts the receiving confirmation indication information of the uplink data, triggers the uplink beam tracking by using the negative acknowledgement NACK indication, and does not trigger the uplink beam tracking by using the positive acknowledgement ACK indication; or

The feedback information uses dedicated indication information, and uses the dedicated indication information to indicate whether to trigger uplink beam tracking; or

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the resource indication occupied by the receiving confirmation indication information to indicate whether to trigger uplink beam tracking, where the resource occupied by the receiving confirmation indication information is from two predefined presets corresponding to the uplink information. Select from feedback resources.
A terminal according to any one of claims 22 to 24, wherein

The uplink beam tracking module sends an uplink beam tracking signal to the base station, including:

The uplink beam tracking module sends the uplink beam tracking signal to the base station on multiple uplink transmit beams according to a transmission configuration of a preset uplink beam tracking signal of the system; or

And obtaining, by the uplink beam tracking module, a sending configuration of an uplink beam tracking signal from the feedback information or other system information sent by the base station, and sending, according to the sending configuration, to the base station on multiple uplink transmit beams. Uplink beam tracking signal; or,

The system pre-defines a transmission configuration of two or more uplink beam tracking signals, and the uplink beam tracking module acquires, from the feedback information or other system information sent by the base station, indication information of a currently used transmission configuration, according to the indication. Sending configuration of the information indication, sending the uplink beam tracking signal to the base station on multiple uplink transmit beams;

The sending configuration of the uplink beam tracking signal includes one or more of the following information: a sending period of the uplink beam tracking signal, a number of times of sending the uplink beam tracking signal, and a time-frequency domain resource set for transmitting the uplink beam tracking signal, a number of uplink transmit beams for transmitting an uplink beam tracking signal, and a mapping relationship between an uplink beam tracking signal and an index of an uplink transmit beam; the plurality of uplink transmit beams including the uplink preferred transmit beam, and the uplink optimization An uplink transmit beam that is on one or both sides of the transmit beam and that is adjacent to the upstream preferred transmit beam.
The terminal according to claim 26, wherein

The uplink information is uplink service data, and the time-frequency domain resource set for transmitting the uplink beam tracking signal includes all or part of the retransmission resources of the uplink service data.
A terminal according to any one of claims 22 to 24, 27, wherein

The uplink beam tracking module is further configured to: after sending an uplink beam tracking signal to the base station, receive the first indication information sent by the base station, and update the currently used uplink preferred transmit beam according to the first indication information, The first indication information is used to indicate a new uplink preferred transmit beam determined by the base station.
A base station, comprising:

The uplink information receiving module is configured to: the uplink information that is preferably received by the receiving beam receiving terminal;

The uplink beam tracking module is configured to: determine, according to the receiving state of the uplink information by the uplink information receiving module, whether to trigger uplink beam tracking, and send feedback information to the terminal, where the feedback information is used for The terminal indicates the trigger status of the uplink beam tracking.
The base station according to claim 29, wherein

The uplink information received by the uplink information receiving module includes uplink service data, or includes an uplink reference signal.
The base station according to claim 29, wherein

And determining, by the uplink beam tracking module, whether to trigger uplink beam tracking according to the receiving state of the uplink information, including: triggering uplink beam tracking when the receiving state meets any one of the following one or more conditions:

Receiving quality of the uplink information on the uplink preferred receive beam decreases, and decreases The amplitude exceeds the set amplitude threshold;

Receiving quality of the uplink information on the uplink preferred receive beam is lower than a set reception quality threshold;

The uplink information was not successfully received;

When the number of retransmissions of the uplink information reaches the set number of retransmission times, the uplink information is not successfully received.
The base station according to claim 29, wherein

The feedback information is used to indicate the trigger status of the uplink beam tracking to the terminal, including:

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the newly added bit in the receiving confirmation indication information to indicate whether to trigger uplink beam tracking; or

The feedback information adopts the receiving confirmation indication information of the uplink data, triggers the uplink beam tracking by using the negative acknowledgement NACK indication, and does not trigger the uplink beam tracking by using the positive acknowledgement ACK indication; or

The feedback information uses dedicated indication information, and uses the dedicated indication information to indicate whether to trigger uplink beam tracking; or

The feedback information uses the receiving confirmation indication information of the uplink data, and uses the resource indication occupied by the receiving confirmation indication information to indicate whether to trigger uplink beam tracking, where the resource occupied by the receiving confirmation indication information is from two predefined presets corresponding to the uplink information. Select from feedback resources.
A base station according to any one of claims 29 to 32, wherein

The uplink beam tracking module sends feedback information to the terminal, including:

The uplink beam tracking module sends the feedback information by using a preferred transmit beam on a predefined feedback resource; or

The uplink beam tracking module sends the feedback information in a wide beam on a predefined feedback resource; or

The uplink beam tracking module sends the feedback information omnidirectionally on a predefined feedback resource; or

The uplink information corresponds to two predefined feedback resources; when the uplink beam tracking is not triggered, the uplink beam tracking module is in the first pre-predicted resource Defining a feedback signal to send the feedback information to the following preferred transmit beam. When the uplink beam tracking is triggered, the uplink beam tracking module uses a second predefined feedback resource in the time domain of the two predefined feedback resources. Sending the feedback information in a wide beam or omnidirectionally;

The wide beam refers to a transmit beam that covers the downlink preferred transmit beam in whole or in part and has a larger transmit angle than the downlink preferred transmit beam; the pre-defined feedback resource exists between the resource occupied by the uplink information and the uplink information. a predefined mapping relationship; the second predefined feedback resource is located in a time domain resource unit configured to transmit information in a wide beam or omnidirectional in a time domain resource set used by the base station.
A base station according to any one of claims 29 to 32, wherein

The uplink beam tracking module is further configured to: after determining to trigger uplink beam tracking, indicate, by using the feedback information or other system information, a sending configuration of an uplink beam tracking signal by using the feedback information or other system information; where the uplink beam tracking signal is sent. The configuration includes one or more of the following information: a transmission period of the uplink beam tracking signal, a transmission frequency of the uplink beam tracking signal, a time-frequency domain resource set for transmitting the uplink beam tracking signal, and an uplink transmission beam for transmitting the uplink beam tracking signal. The number, and the mapping relationship between the uplink beam tracking signal and the index of the uplink transmit beam.
The base station according to claim 34, wherein

The uplink information is uplink service data, and the time-frequency domain resource set for transmitting the uplink beam tracking signal includes all or part of the retransmission resources of the uplink service data.
A base station according to any one of claims 29 to 32, 35, wherein

The uplink beam tracking module is further configured to: after sending the feedback information to the terminal, receive an uplink beam tracking signal sent by the terminal on multiple uplink transmit beams, and receive the most received uplink beam tracking signal. The uplink transmit beam in which the uplink packet tracking signal is located is determined as a new uplink preferred transmit beam, and the first indication information is sent to the terminal, where the first indication information is used to indicate the new uplink preferred transmit beam.