WO2016101685A1

WO2016101685A1 - Method and apparatus for sending and receiving data packet, base station and terminal

Info

Publication number: WO2016101685A1
Application number: PCT/CN2015/092108
Authority: WO
Inventors: 弓宇宏; 郭森宝; 刘文豪
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-12-24
Filing date: 2015-10-16
Publication date: 2016-06-30
Also published as: CN105790886A

Abstract

Disclosed are a method and apparatus for sending and receiving a data packet, a base station and a terminal. The method comprises: sending a first data packet to a receiving station on a first group of beams using an antenna having beam characteristics; sending a pre-determined measurement reference signal to the receiving station on a second group of beams using the antenna having the beam characteristics, wherein the second group of beams comprise one or more beams adjacent and/or identical to beams in the first group of beams, and the pre-determined measurement reference signal is used for measuring the quality of a channel link on the second group of beams by the receiving station; receiving one or more high-quality beams in the second group of beams, which are fed back by the receiving station according to a measurement result of the quality of the channel link; and sending a second data packet on the one or more high-quality beams. By means of the present invention, an optimal communication link can be re-established at a high speed, thereby aiding in improving the quality of a communication link having beam characteristics, and reducing a communication delay.

Description

Data packet transmission and reception method, device, base station and terminal

Technical field

The present invention relates to the field of communications, and in particular to a method and device for transmitting and receiving data packets, a base station, and a terminal.

Background technique

Traditional commercial communications include Amplitude Modulation (AM)/Frequency Modulation (FM) broadcasting, Television (TV), cellular networks, satellite communications, and Global Positioning System (GPS). For GPS), Bluetooth, etc., mainly use spectrum resources between 300MHz and 3GHz. About 500 MHz of spectrum resources between 300 MHz and 3 GHz can be used for Long-Term Evolution (LTE). However, as the demand for communication services continues to grow, this spectrum of resources becomes more and more crowded and is insufficient to meet the needs of future communications.

Of the high frequency spectrum resources of 3-300 GHz, up to 252 GHz spectrum is potentially available for mobile broadband communications. Although not all spectrum resources in high frequency spectrum resources can be used in mobile broadband communications. For example, 57-64 GHz spectrum resources are not suitable for mobile broadband communication due to severe oxygen layer absorption, and 164-200 GHz is not suitable for mobile broadband communication due to severe water vapor absorption, and some spectrums have been applied in practice. However, even if the remaining 252 GHz 40% of the spectrum resources are used for mobile broadband communications, it will be more than 200 times the current mobile broadband resources. Therefore, the use of high-frequency spectrum resources for mobile broadband communication is a promising research direction.

The characteristics of high-frequency communication are that it has relatively serious path loss and penetration loss, and the spatial propagation is closely related to the atmospheric environment. Since the wavelength of the high-frequency signal is extremely short, a large number of small antenna arrays can be applied, so that the beamforming technology can obtain a more accurate beam direction, and the transmission loss is compensated by the advantage of the narrow beam technology, which is a feature of high-frequency communication. However, the use of narrow beam technology also increases the difficulty of establishing links between wireless devices, especially when the wireless device is in a mobile state, the use of narrow beam technology can easily cause the communication link between wireless devices to be lost or deteriorated. .

Therefore, in the related art, when a high-directional antenna is used to communicate between wireless devices, fast recovery cannot be achieved for a link that has been deteriorated or disconnected, resulting in a communication link quality that affects beam characteristics, resulting in a ratio. More serious problem with transmission delay.

Summary of the invention

Embodiments of the present invention provide a data packet transmitting and receiving method, apparatus, base station, and terminal, to at least solve the problem that in the related art, when using a high directional antenna to communicate between wireless devices, it is already deteriorated or disconnected. The link does not achieve fast recovery, resulting in the quality of the communication link that affects the beam characteristics, causing serious transmission delay problems.

According to an aspect of an embodiment of the present invention, a data packet transmitting method includes: transmitting, by using an antenna having a beam characteristic, a first data packet to a receiving station on a first beam group; and using an antenna having a beam characteristic in a second Transmitting, on the beam set, a predetermined measurement reference signal to the receiving station, wherein the second beam set includes one or more beams adjacent and/or identical to beams in the first beam set, the predetermined measurement a reference signal for the receiving station to measure a channel link quality on the second beam group; receiving one of the second beam groups fed back by the receiving station according to a measurement result of a channel link quality or a plurality of premium beams; transmitting a second data packet on the one or more premium beams.

Preferably, the predetermined measurement reference signal is transmitted to the receiving station on the second beam group using an antenna having a beam characteristic on at least one of the following conditions: on the first beam group After receiving the first data packet for more than a predetermined number of times, the receiving station does not receive the acknowledgement feedback sent by the receiving station to indicate that the first data packet is received; and on the first beam group After the receiving station sends the first data packet for more than a predetermined time, the receiving station does not receive the acknowledgement feedback sent by the receiving station to indicate that the first data packet is received.

Preferably, before receiving the one or more quality beams in the second beam group fed back by the receiving station according to the measurement result of the channel link quality, the method further includes: sending the trigger information to trigger the receiving station to use the The predetermined measurement reference signal measures channel link quality on the second beam set.

Preferably, the transmitting the trigger information to trigger the receiving station to measure the channel link quality on the second beam group by using the predetermined measurement reference signal comprises at least one of: sending to the receiving station a first control signaling, where the first control signaling carries the trigger information, the first control signaling is a control signaling for scheduling the first data packet, and the first signaling signaling is sent to the receiving station The second control signaling, wherein the second control signaling carries the trigger information, and the second control signaling includes one of the following: broadcast control signaling, common control signaling; and determining beam characteristics in use After the first antenna packet fails to send the first data packet to the receiving station, the antenna sends the third control signaling to the receiving station, where the third control signaling carries the trigger information.

Preferably, the trigger information includes at least one of the following: used to instruct the sending station to start sending the predetermined test The indication information of the quantity reference signal; the indication information for indicating that the first data packet is the first transmission or the first retransmission; and the maximum round trip delay for indicating the one transmission and reception of the first data packet The indication information is used to indicate the resource configuration of the measurement reference signal, where the resource configuration of the measurement parameter signal includes at least one of: a frequency resource used by the measurement reference signal, the measurement reference signal a time resource used, a corresponding reference signal sequence of the measurement reference signal, indication information indicating a maximum number of retransmissions of the first data packet, and a maximum transmission time limit for indicating the first data packet The indication information is used to indicate the number of transmission beam directions included in the second beam group or the indication information of the included transmission beam, and is used to indicate that the receiving station is used for feedback for determining to send the first data packet. The indication of the power boost level of the acknowledgment message.

Preferably, all or part of the data information in the first data packet is included in the second data packet.

According to another aspect of an embodiment of the present invention, there is provided a data packet receiving method, comprising: attempting to receive a first data packet from a first beam group of a transmitting station using an omnidirectional antenna or an antenna having beam characteristics; using an omnidirectional antenna Or an antenna having beam characteristics attempting to receive a predetermined measurement reference signal from a second beam group of the transmitting station, wherein the second beam group comprises one or more adjacent and/or identical to a beam in the first beam group Beams; measuring channel link quality on the second beam group using the predetermined measurement reference signal, determining one or more quality beams in the second beam group, and the second beam group One or more of the premium beam information is fed back to the transmitting station; the second data packet is received on the one or more quality beams.

Preferably, the omnidirectional antenna or the antenna having the beam characteristic is used to receive the predetermined measurement reference signal from the second beam group of the transmitting station when at least one of the following conditions is satisfied: at the first beam from the transmitting station The number of attempts to receive the first data packet on the group exceeds a predetermined number of times, the first data packet has not been received; the first data packet is not received from the first beam group of the sending station time.

Preferably, before using the predetermined measurement reference signal to measure channel link quality on the second beam group, before determining one or more quality beams in the second beam group, the method further includes: receiving by trigger Information triggering uses the predetermined measurement reference signal to measure channel link quality on the second beam set.

Preferably, the determining, by receiving the trigger information, the measurement of the channel link quality on the second beam group by using the predetermined measurement reference signal comprises at least one of: receiving the first control signaling sent by the sending station, The first control signaling carries the trigger information, where the first control signaling is control signaling for scheduling the first data packet, and second control signaling sent by the sending station is received. The second control signaling carries the trigger information, and the second control signaling includes one of the following: broadcast control signaling, common control signaling; determining to use an omnidirectional antenna or having beam characteristics After receiving the first data packet from the first beam group of the sending station, the antenna receives the third control signaling sent by the sending station, where the third control signaling carries The trigger information.

Preferably, the trigger information includes at least one of: indication information for instructing the receiving station to start receiving the predetermined measurement reference signal; and indicating that the first data packet is sent for the first time or is retransmitted for the first time Instructing information; indication information indicating a maximum round trip delay of one transmission and reception of the first data packet; indication information indicating resource configuration of the measurement reference signal, wherein the resource of the measurement parameter signal The configuration includes at least one of: a frequency resource used by the measurement reference signal, a time resource used by the measurement reference signal, and a corresponding reference signal sequence of the measurement reference signal; and configured to indicate the first data packet The indication information of the maximum number of retransmissions; the indication information for indicating the maximum transmission time limit of the first data packet; the indication of the number of transmission beam directions included in the second beam group or the included transmission beam Instructing information, used to indicate that the receiving station is used to feed back a power boosting level for determining an acknowledgement message for sending the first data packet Instructions.

Preferably, the channel link quality on the second beam group is measured by using the predetermined measurement reference signal, and determining the one or more quality beams in the second beam group comprises: according to the received location The measurement reference signal sequentially measures, in a predetermined order, the signaling link quality between each beam in the second beam group of the transmitting station and each beam in the predetermined third beam group of the receiving station; according to the measurement result of the signaling link quality And selecting the one or more quality beams from the second beam group.

According to an aspect of the present invention, a data packet transmitting apparatus is provided, including: a first sending module, configured to send a first data packet to a receiving station on a first beam group using an antenna having a beam characteristic; a transmitting module configured to transmit, by using an antenna having beam characteristics, a predetermined measurement reference signal to the receiving station on a second beam group, wherein the second beam group includes a beam adjacent to the beam in the first beam group And/or the same one or more beams, the predetermined measurement reference signal being used by the receiving station to measure channel link quality on the second beam group; a first receiving module configured to receive the receiving And transmitting, by the station, one or more quality beams in the second beam group according to the measurement result of the channel link quality; and the third sending module is configured to send the second data packet on the one or more quality beams.

Preferably, the second sending module is further configured to send the predetermined measurement reference signal to the receiving station on the second beam group by using an antenna having a beam characteristic, if at least one of the following conditions is met After the first data packet is sent to the receiving station on the first beam group for more than a predetermined number of times, the acknowledgement feedback sent by the receiving station for indicating that the first data packet is received has not been received. After the first data packet is sent to the receiving station on the first beam group for more than a predetermined time, the acknowledgement feedback sent by the receiving station for indicating that the first data packet is received has not been received. .

Preferably, the apparatus further comprises: a first triggering module configured to trigger the receiving station to measure channel link quality on the second beam group by using the predetermined measurement reference signal by transmitting trigger information.

Preferably, the first triggering module is further configured to: by sending the trigger information, to trigger the receiving station to use the predetermined measurement reference signal to measure channel link quality on the second beam group, including the following: At least one of the first control signaling is sent to the receiving station, where the first control signaling carries the trigger information, and the first control signaling is a control for scheduling the first data packet. The signaling is sent to the receiving station, where the second control signaling carries the trigger information, and the second control signaling includes one of the following: broadcast control signaling, public Controlling signaling; transmitting, after the failure to transmit the first data packet to the receiving station on the first beam group using the antenna having the beam characteristic, transmitting the third control signaling to the receiving station, wherein the third control signaling The trigger information is carried in the middle.

Preferably, the trigger information includes at least one of: indication information indicating that the sending station starts to send the predetermined measurement reference signal; and indicating that the first data packet is sent for the first time or is retransmitted for the first time Instructing information; indication information indicating a maximum round trip delay of one transmission and reception of the first data packet; indication information indicating resource configuration of the measurement reference signal, wherein the resource of the measurement parameter signal The configuration includes at least one of: a frequency resource used by the measurement reference signal, a time resource used by the measurement reference signal, and a corresponding reference signal sequence of the measurement reference signal; and configured to indicate the first data packet The indication information of the maximum number of retransmissions; the indication information for indicating the maximum transmission time limit of the first data packet; the indication of the number of transmission beam directions included in the second beam group or the included transmission beam Instructing information, used to indicate that the receiving station is used to feed back a power boosting level for determining an acknowledgement message for sending the first data packet Instructions.

According to another aspect of an embodiment of the present invention, a base station is provided, comprising the apparatus of any of the above.

According to an aspect of the present invention, a data packet receiving apparatus is provided, comprising: a second receiving module configured to attempt to receive first data from a first beam group of a transmitting station using an omnidirectional antenna or an antenna having beam characteristics a third receiving module configured to use an omnidirectional antenna or an antenna having beam characteristics to attempt to receive a predetermined measurement reference signal from a second beam group of the transmitting station, wherein the second beam group includes the first beam group a beam adjacent and/or the same one or more beams; a determining module configured to measure a channel link quality on the second beam group using the predetermined measurement reference signal to determine the second beam One or more quality beams in the group, and feeding back one or more quality beam information in the second beam group to the transmitting station; and a fourth receiving module configured to receive on the one or more quality beams The second data packet.

Preferably, the third receiving module is further configured to attempt to receive the predetermined measurement reference signal from the second beam group of the transmitting station by using an omnidirectional antenna or an antenna having beam characteristics, if at least one of the following conditions is met : the number of attempts to receive the first data packet from the first beam group of the transmitting station exceeds a predetermined number of times, the first data packet has not been received; not from the first beam group of the transmitting station Receiving the first data packet for more than a predetermined time.

Preferably, the apparatus further includes: a second triggering module configured to trigger measurement of a channel link quality on the second beam group by using the predetermined measurement reference signal by receiving trigger information.

Preferably, the second triggering module is further configured to: trigger, by receiving the trigger information, to measure, by using the predetermined measurement reference signal, a channel link quality on the second beam group, including at least one of: receiving the The first control signaling sent by the sending station, where the first control signaling carries the trigger information, where the first control signaling is a control signaling for scheduling the first data packet; The second control signaling sent by the sending station, where the second control signaling carries the trigger information, and the second control signaling includes one of the following: broadcast control signaling, common control signaling; After determining that an omnidirectional antenna or an antenna having beam characteristics attempts to receive the first data packet from the first beam group of the transmitting station, receiving a third control signaling sent by the transmitting station, where The trigger information is carried in the third control signaling.

Preferably, the determining module includes: a measuring unit configured to sequentially measure each beam in the second beam group of the transmitting station and each of the predetermined third beam groups of the receiving station according to the received measurement reference signal in a predetermined order Signaling link quality between beams; a selecting unit configured to select the one or more quality beams from the second beam group based on measurements of signaling link quality.

According to another aspect of an embodiment of the present invention, there is provided a terminal comprising the apparatus of any of the above.

According to an embodiment of the present invention, the first data packet is sent to the receiving station on the first beam group by using the antenna having the beam characteristic; and the predetermined measurement reference signal is sent to the receiving station on the second beam group using the antenna having the beam characteristic. Wherein the second beam set includes one or more beams adjacent to and/or identical to beams in the first beam set, the predetermined measurement reference signal being used by the receiving station to the second Measuring the quality of the channel link on the beam group; receiving one or more quality beams in the second beam group fed back by the receiving station according to the measurement result of the channel link quality; in the one or more high quality The second data packet is sent on the beam, and the solution is solved. In the related art, when a high-directional antenna is used for communication between wireless devices, fast recovery cannot be achieved for a link that has been deteriorated or disconnected, resulting in a quality of a communication link that affects beam characteristics, resulting in serious transmission. The problem of delay, and thus reaching the communication between the wireless devices by using the antenna with beam characteristics, the optimal communication link can be re-established at a relatively fast speed, which is beneficial to improving the quality of the communication link with beam characteristics, and Reduce the effect of communication delay.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flowchart of a method for transmitting a data packet according to an embodiment of the present invention;

2 is a flowchart of a data packet receiving method according to an embodiment of the present invention;

FIG. 3 is a structural block diagram of a data packet transmitting apparatus according to an embodiment of the present invention; FIG.

4 is a block diagram showing a preferred structure of a data packet transmitting apparatus according to an embodiment of the present invention;

FIG. 5 is a structural block diagram of a base station according to an embodiment of the present invention; FIG.

FIG. 6 is a structural block diagram of a data packet receiving apparatus according to an embodiment of the present invention; FIG.

FIG. 7 is a block diagram showing a preferred structure of a data packet receiving apparatus according to an embodiment of the present invention; FIG.

FIG. 8 is a structural block diagram of a determining module 66 in a data packet receiving apparatus according to an embodiment of the present invention;

9 is a structural block diagram of a terminal according to an embodiment of the present invention;

10 is a flowchart of a fast link recovery method for high frequency mobile broadband communication in accordance with an embodiment of the present invention;

FIG. 11a is a first diagram of relationship between a second beam group and a first beam group according to an embodiment of the present invention; FIG.

FIG. 11b is a second diagram showing a relationship between a second beam group and a first beam group according to an embodiment of the present invention; FIG.

FIG. 11c is a third diagram of a relationship between a second beam group and a first beam group according to an embodiment of the present invention; FIG.

11d is a diagram 4 showing a relationship between a second beam group and a first beam group according to an embodiment of the present invention;

12 is a flowchart of a fast link recovery method for assuming that a terminal is non-directionally received according to an embodiment of the present invention;

FIG. 13a is a transmission/reception of a data packet by scheduling control signaling of a data packet according to an embodiment of the present invention. A schematic diagram of a process for counting numbers;

FIG. 13b is a schematic diagram 2 of a process of counting the number of transmission/reception times of a data packet by scheduling control signaling of a data packet according to an embodiment of the present invention; FIG.

13c is a schematic diagram 3 of a process of counting the number of transmission/reception times of a data packet by scheduling control signaling of a data packet according to an embodiment of the present invention;

14 is a flowchart of a fast link recovery method for assuming that a terminal is directional reception according to an embodiment of the present invention;

15 is a flowchart of a fast link recovery method for assuming that a terminal is directionally received and directed to transmit according to an embodiment of the present invention;

16 is a flow chart of a fast link recovery method for assuming that a terminal is directional or non-directional, in accordance with an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

In this embodiment, a data packet sending method is provided. FIG. 1 is a flowchart of a data packet sending method according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps:

Step S102: Send a first data packet to the receiving station on the first beam group by using an antenna having a beam characteristic;

Step S104: Send a predetermined measurement reference signal to the receiving station on the second beam group using the antenna having the beam characteristic, where the second beam group includes one or more adjacent to and/or the same beam as the first beam group. a beam, the predetermined measurement reference signal is used by the receiving station to measure the channel link quality on the second beam group;

Step S106: Receive one or more quality beams in the second beam group fed back by the receiving station according to the measurement result of the channel link quality;

In step S108, the second data packet is sent on one or more high-quality beams. It should be noted that the second data packet may include all or part of the data information of the first data packet, that is, the second data packet may be The first data packet may be a retransmission of the data packet, or may be a new data packet different from the first data packet.

Through the above steps, a predetermined measurement reference signal for measuring the quality of the channel link is sent to the receiving station, and the receiving station feeds back one or more high-quality beams to the transmitting station according to the measurement of the quality of the channel link, and is fast. Rebuilding a link that has deteriorated or broken, not only solves the related art, but also uses a high directional antenna to communicate between wireless devices, and cannot achieve fast recovery for a link that has deteriorated or disconnected. The quality of the communication link affecting the beam characteristics brings about a serious problem of transmission delay, and thus, when the communication between the wireless devices is performed by using the antenna with beam characteristics, the optimal communication chain can be re-established at a relatively fast speed. The road is beneficial to improve the quality of the communication link with beam characteristics and reduce the effect of communication delay.

The scenario of transmitting the measurement reference signal to the receiving station may include multiple types, for example, transmitting the measurement reference signal to the receiving station when transmitting the first data packet to the receiving station, and, for example, may be performed under at least one of the following conditions: And transmitting, by using the antenna having the beam characteristic, the predetermined measurement reference signal to the receiving station on the second beam group: after the first data packet is sent to the receiving station on the first beam group for more than a predetermined number of times, the receiving station has not received the transmission Confirming the acknowledgement of receiving the first data packet; after transmitting the first data packet to the receiving station on the first beam group for more than a predetermined time, the acknowledgement sent by the receiving station for indicating the receipt of the first data packet has not been received Feedback. That is, in the case where the transmission of the first data packet to the receiving station fails, the measurement reference signal for measuring the quality of the channel link is transmitted to the receiving station.

Preferably, before receiving the one or more quality beams in the second beam group fed back by the receiving station according to the measurement result of the channel link quality, the method may further include: triggering the receiving station to use the predetermined measurement reference signal by sending the trigger information The channel link quality on the second beam set is measured. For example, the receiving station may be configured to measure the channel link quality on the second beam group using the predetermined measurement reference signal by at least one of: transmitting the first control signaling to the receiving station, where the first control signaling is Carrying the trigger information for triggering the receiving station to measure the channel link quality on the second beam group by using a predetermined measurement reference signal, where the first control signaling is control signaling for scheduling the first data packet; to the receiving station Sending the second control signaling, where the second control signaling carries the trigger information for triggering the receiving station to measure the channel link quality on the second beam group by using the predetermined measurement reference signal, where the second control signaling includes One of the following: broadcast control signaling, common control signaling; after determining that the first data packet is sent to the receiving station on the first beam group using the antenna having the beam characteristic, the third control signaling is sent to the receiving station, where The third control signaling carries a method for triggering the receiving station to measure the channel link quality on the second beam group by using the predetermined measurement reference signal. The trigger information is to be noted that, as compared to the conventional signaling of the first control signaling, signaling the second control, the third control signaling may be the new signaling.

The trigger information may include at least one of the following: indication information for instructing the sending station to start transmitting the predetermined measurement reference signal; indication information for indicating that the first data packet is the first transmission or the first retransmission; The indication information indicating the maximum round trip delay of the first transmission and the reception of the first data packet; the indication information for indicating the resource configuration of the measurement reference signal, wherein the resource configuration of the measurement parameter signal includes at least one of the following: the measurement reference signal a frequency resource used, a time resource used for measuring the reference signal, a corresponding reference signal sequence of the measurement reference signal, indication information indicating a maximum number of retransmissions of the first data packet, and a maximum transmission for indicating the first data packet The indication information of the time limit; the indication information for indicating the number of transmission beam directions included in the second beam group or the included transmission beam; and the indication for indicating that the receiving station uses the feedback for determining to send the first data packet Indicates the power boost level of the message.

FIG. 2 is a flowchart of a data packet receiving method according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

Step S202, attempting to receive the first data packet from the first beam group of the sending station by using an omnidirectional antenna or an antenna having beam characteristics;

Step S204, using an omnidirectional antenna or an antenna having beam characteristics to attempt to receive a predetermined measurement reference signal from a second beam group of the transmitting station, wherein the second beam group includes adjacent and/or the same beam as the first beam group One or more beams;

Step S206, measuring a channel link quality on the second beam group by using a predetermined measurement reference signal, determining one or more quality beams in the second beam group, and one or more quality beams in the second beam group Information feedback to the sending station;

Step S208, receiving a second data packet on one or more good quality beams.

Through the above steps, the channel link quality is measured according to the measurement reference signal sent by the sending station, and one or more high-quality beams in the second beam group are determined, and the link that has been deteriorated or disconnected is quickly reconstructed, which not only solves In the related art, when a high-directional antenna is used to communicate between wireless devices, fast recovery cannot be achieved for a link that has been deteriorated or disconnected, resulting in a communication link quality that affects beam characteristics, resulting in serious transmission. The problem of delay, and thus reaching the communication between the wireless devices by using the antenna with beam characteristics, can re-establish the optimal communication link at a relatively fast speed, which is beneficial to improving the quality of the communication link with beam characteristics and reducing The effect of communication delay.

Corresponding to the foregoing sending station, in combination with the different scenarios for receiving the measurement reference signal, correspondingly, a plurality of receiving modes may be used: for example, receiving the measurement reference signal while receiving the first data packet; for example, An omnidirectional antenna or an antenna having beam characteristics is used to attempt to receive a predetermined measurement reference signal from a second beam group of the transmitting station when at least one of the following conditions is met: attempting to receive the first data on the first beam group from the transmitting station The number of attempts of the packet exceeds a predetermined number of times, and the first data packet has not been received; the first data packet is not received on the first beam group from the transmitting station for more than a predetermined time.

Preferably, before the measurement of the channel link quality on the second beam group is performed by using the predetermined measurement reference signal, the channel link quality on the second beam group may be measured by using the received trigger information to trigger the use of the predetermined measurement reference signal. For example, the channel link quality on the second beam group may be measured by using at least one of the following methods: receiving the first control signaling sent by the sending station, where the first control signaling The triggering information is used to trigger measurement of a channel link quality on the second beam group by using a predetermined measurement reference signal, where the first control signaling is control signaling for scheduling the first data packet; The second control signaling, where the second control signaling carries the trigger information for triggering measurement of the channel link quality on the second beam group by using the predetermined measurement reference signal, where the second control signaling includes the following One: Broadcast control signaling, common control signaling; receiving a third control signaling sent by the transmitting station after determining that an omnidirectional antenna or an antenna having beam characteristics attempts to receive the first data packet from the first beam group of the transmitting station fails The third control signaling carries the trigger information for triggering measurement of the channel link quality on the second beam group by using the predetermined measurement reference signal, and similarly, the foregoing can be used as the existing signaling. In the case of a control signaling and a second control signaling, the third control signaling may be new signaling.

Preferably, the trigger information may include at least one of: indication information for instructing the receiving station to start receiving the predetermined measurement reference signal; and indication information for indicating that the first data packet is first transmitted or retransmitted for the first time; The indication information for indicating the maximum round trip delay of the first transmission and the reception of the first data packet; the indication information for indicating the resource configuration of the measurement reference signal, wherein the resource configuration of the measurement parameter signal includes at least one of the following: the measurement reference a frequency resource used by the signal, a time resource used for measuring the reference signal, a corresponding reference signal sequence of the measurement reference signal, indication information indicating a maximum number of retransmissions of the first data packet, and indicating the first data packet The indication information of the maximum transmission time limit; the indication information for indicating the number of transmission beam directions included in the second beam group or the included transmission beam; and the indication receiving station for feedback for determining to send the first data packet The indication of the power boost level of the acknowledgment message.

When the channel link quality on the second beam group is measured using the predetermined measurement reference signal to determine one or more quality beams in the second beam group, the following processing manner is preferably adopted: according to the received measurement reference signal according to the predetermined And sequentially measuring the signaling link quality between each beam in the second beam group of the transmitting station and each beam in the predetermined third beam group of the receiving station; selecting from the second beam group according to the measurement result of the signaling link quality One or more quality beams.

In the embodiment, a data packet transmitting and receiving device is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 3 is a structural block diagram of a data packet transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 3, the apparatus includes: a first sending module 32, a second sending module 34, a first receiving module 36, and a third sending module 38. The device will be described below.

The first sending module 32 is configured to use the antenna having the beam characteristic to send the first data packet to the receiving station on the first beam group; and the second sending module 34 is configured to use the antenna with the beam characteristic on the second beam group The receiving station transmits a predetermined measurement reference signal, wherein the second beam group includes one or more beams adjacent to and/or identical to the beams in the first beam group, and the predetermined measurement reference signal is used by the receiving station on the second beam group The channel link quality is measured; the first receiving module 36 is connected to the first sending module 32 and the second sending module 34, and is configured to receive the second beam group that is received by the receiving station according to the measurement result of the channel link quality. One or more high quality beams; a third transmitting module 38, coupled to the second transmitting module 36, configured to be in one or more high quality The second data packet is sent on the beam, and correspondingly, all or part of the data information in the first data packet may be included in the second data packet.

Preferably, the foregoing second sending module 34 is further configured to send a predetermined measurement reference signal to the receiving station on the second beam group using the antenna having the beam characteristic: at least one of the following conditions: in the first beam group After transmitting the first data packet to the receiving station for more than a predetermined number of times, the acknowledgment feedback sent by the receiving station for indicating the receipt of the first data packet has not been received; and the first data packet is sent to the receiving station over the first beam group. After the predetermined time, the confirmation feedback sent by the receiving station for indicating the receipt of the first data packet has not been received.

4 is a block diagram of a preferred structure of a data packet transmitting apparatus according to an embodiment of the present invention. As shown in FIG. 4, the apparatus includes: a first triggering module 42 in addition to all the modules shown in FIG. The first trigger module 42 is described.

The first triggering module 42 is connected to the first receiving module 36, and is configured to trigger the receiving station to measure the channel link quality on the second beam group by using the predetermined measurement reference signal by sending the trigger information.

Preferably, the first triggering module 42 is further configured to: by sending the trigger information, to trigger the receiving station to measure the channel link quality on the second beam group by using the predetermined measurement reference signal, including at least one of: sending to the receiving station The first control signaling, where the first control signaling carries the trigger information for triggering the receiving station to measure the channel link quality on the second beam group by using the predetermined measurement reference signal, the first control signal And the second control signaling is sent to the receiving station, where the second control signaling carries the foregoing information for triggering the receiving station to use the predetermined measurement reference signal on the second beam group. The trigger information for measuring the quality of the channel link, the second control signaling includes one of: broadcast control signaling, common control signaling; and determining to use the antenna having the beam characteristic to transmit to the receiving station on the first beam group After a data packet fails, the third control signaling is sent to the receiving station, where the third control signaling carries the foregoing method for triggering the receiving station to use the predetermined measurement. Reference signal on the channel link quality measure a second beam set of the trigger information.

Preferably, the trigger information includes at least one of: indication information for instructing the transmitting station to start transmitting the predetermined measurement reference signal; indication information for indicating that the first data packet is first transmitted or is the first retransmission; for indicating The indication information of the maximum round-trip delay of the first transmission and the reception of the first data packet; the indication information for indicating the resource configuration of the measurement reference signal, wherein the resource configuration of the measurement parameter signal includes at least one of the following: the measurement reference signal is used a frequency resource, a time resource used to measure the reference signal, a corresponding reference signal sequence of the measurement reference signal, indication information indicating a maximum number of retransmissions of the first data packet, and a maximum transmission time limit for indicating the first data packet The indication information used to indicate the number of transmission beam directions included in the second beam group or the included transmission beam indication information; used to instruct the receiving station to use the feedback for determining the acknowledgment message for transmitting the first data packet Indicates the power boost level.

FIG. 5 is a structural block diagram of a base station according to an embodiment of the present invention. As shown in FIG. 5, the base station 50 includes the foregoing. A packet transmitting device 52 of one item.

FIG. 6 is a structural block diagram of a data packet receiving apparatus according to an embodiment of the present invention. As shown in FIG. 6, the apparatus includes: a second receiving module 62, a third receiving module 64, a determining module 66, and a fourth receiving module 68. The device will be described.

The second receiving module 62 is configured to use an omnidirectional antenna or an antenna having beam characteristics to attempt to receive the first data packet from the first beam group of the transmitting station; and the third receiving module 64 is configured to use an omnidirectional antenna or has beam characteristics. The antenna attempts to receive a predetermined measurement reference signal from the second beam group of the transmitting station, wherein the second beam group includes one or more beams adjacent and/or identical to the beams in the first beam group; a determination module 66, coupled to The second receiving module 62 and the third receiving module 64 are configured to measure the channel link quality on the second beam group using a predetermined measurement reference signal, determine one or more quality beams in the second beam group, and One or more high-quality beam information in the second beam group is fed back to the transmitting station; the fourth receiving module 68 is connected to the determining module 66, and is configured to receive the second data packet on one or more high-quality beams, where All or part of the data information in the first data packet may be included in the second data packet.

Preferably, the third receiving module 64 is further configured to attempt to receive the predetermined measurement reference signal from the second beam group of the transmitting station by using an omnidirectional antenna or an antenna having beam characteristics, if at least one of the following conditions is met: The number of attempts to receive the first data packet on the first beam group of the transmitting station exceeds a predetermined number of times, and the first data packet has not been received; the first data packet is not received on the first beam group from the transmitting station for more than a predetermined time.

FIG. 7 is a block diagram of a preferred structure of a data packet receiving apparatus according to an embodiment of the present invention. As shown in FIG. 7, the apparatus includes, in addition to all the modules shown in FIG. 6, a second triggering module 72. The second trigger module 72 is described.

The second triggering module 72 is connected to the determining module 66, and is configured to trigger the measurement of the channel link quality on the second beam group by using the predetermined measurement reference signal by receiving the trigger information.

Preferably, the second triggering module 72 is further configured to: trigger, by receiving the trigger information, to measure the channel link quality on the second beam group by using the predetermined measurement reference signal, including at least one of the following: receiving the first sent by the sending station The control signaling, wherein the first control signaling carries the trigger information for triggering measurement of a channel link quality on the second beam group by using a predetermined measurement reference signal, where the first control signaling is a scheduling Controlling signaling of a data packet; receiving second control signaling sent by the transmitting station, where the second control signaling carries the above-mentioned quality of the channel link for triggering the use of the predetermined measurement reference signal on the second beam group Performing the measurement of the trigger information, the second control signaling includes one of: broadcast control signaling, common control signaling; attempting to receive from the first beam group of the transmitting station when determining to use an omnidirectional antenna or an antenna having beam characteristics After the failure of a data packet, the third control signaling sent by the sending station is received, where the third control signaling carries the foregoing Channel measurement reference signal on the second link quality measure of the beam set trigger information.

Preferably, the triggering information includes at least one of: indication information for instructing to start receiving the predetermined measurement reference signal; indication information for indicating that the first data packet is for the first transmission or for the first retransmission; for indicating the first The indication information of the maximum round-trip delay of one transmission and reception of the data packet; the indication information for indicating the resource configuration of the measurement reference signal, wherein the resource configuration of the measurement parameter signal includes at least one of the following: measuring the frequency used by the reference signal a resource, a time resource used for measuring the reference signal, a corresponding reference signal sequence of the measurement reference signal, indication information indicating a maximum number of retransmissions of the first data packet, and an indication for indicating a maximum transmission time limit of the first data packet Information indicating indications of the number of transmit beam directions included in the second beam group or the included transmit beam; indicating the power used by the receiving station to feedback the acknowledgment message used to determine the first data packet Instructions for upgrading the level.

FIG. 8 is a structural block diagram of a determining module 66 in a data packet receiving apparatus according to an embodiment of the present invention. As shown in FIG. 8, the determining module 66 includes a measuring unit 82 and a selecting unit 84. The determining module 66 will be described below.

The determining module 66 includes: a measuring unit 82, configured to sequentially measure, according to the received measurement reference signal, a signaling chain between each beam in the second beam group of the transmitting station and each beam in the predetermined third beam group of the receiving station in a predetermined order. The path quality; a selection unit 84, coupled to the measurement unit 82, is configured to select one or more quality beams from the second beam group based on the measurement of the quality of the signaling link.

Preferably, the second beam set comprises one or more beams adjacent and/or identical to the beams included in the first beam set.

FIG. 9 is a structural block diagram of a terminal according to an embodiment of the present invention. As shown in FIG. 9, the terminal 90 includes the packet receiving device 92 of any of the above.

For the above data packet transmission and reception methods, a summary description will be given in combination with the scenario. In this embodiment, a fast link recovery method for high frequency mobile broadband communication is provided. The following description will be respectively based on the transmitting station (same as the above base station) and the receiving station (same as the above terminal).

Sending station:

The fast link recovery method for high-frequency mobile broadband communication includes: transmitting an data packet to a receiving station on a first beam group using an antenna having beam characteristics (same as the first data packet described above); using an antenna having beam characteristics Transmitting a specified measurement reference signal (same as the predetermined measurement reference signal described above) on the second beam set for the receiving station to measure the channel link quality on the second beam group; using the antenna having the beam characteristic in the second beam group The one or more beams retransmit the data packet to the receiving station or send a new data packet (that is, the second data packet may be the first data packet originally sent, or may be a new data packet).

The second beam group may be one or more beams for fast link recovery predefined or pre-selected or configured by the base station, and the second beam group may be adjacent to and/or the same one of the first beam groups. Or multiple Beam composition.

Wherein, when the acknowledgment for determining the transmission of the data packet is not received from the receiving station after the predetermined number of retransmission attempts on the first beam group or within the predetermined time, the designated measurement reference signal is transmitted on the second beam group.

The specified measurement reference signal may be sent on the configured time/frequency resource for measuring the channel link quality on the second beam group.

Before using the antenna having the beam characteristic to transmit or retransmit the data packet to the receiving station on the first beam group, the omnidirectional antenna or the antenna having the beam characteristic is used to send control signaling for scheduling the data packet to the receiving station, where at least The transmission of control signaling includes at least one of the following information for triggering measurement of the quality of the channel link on the second beam group using the specified reference signal: the packet scheduled by the control signaling is first The second transmission or the indication of the first retransmission; the indication of the maximum round trip delay of one transmission and reception of the data packet scheduled by the control signaling; the indication of the resource configuration related to the measurement reference signal; the maximum retransmission of the data packet The indication of the number of times; the maximum transmission time limit of the data packet is an indication of the predetermined time; the indication of the number of transmission beam directions included in the second beam group; and the receiving station is configured to transmit a power boosting level for determining the acknowledgment information of the transmitted data packet Related instructions. The resource configuration related indication of the specified measurement reference signal includes at least one of a frequency resource, a time resource, and a reference signal sequence used to specify the reference signal.

Before using the antenna having the beam characteristic to transmit the data packet to the receiving station for the first time on the first beam group, using the more robust control signaling, notifying the receiving station of at least one of the following information for triggering the use of the above designation The reference signal measures the quality of the channel link on the second beam group: the data packet scheduled for the control signaling is an indication of the first transmission or the first retransmission; the transmission of the data packet scheduled by the control signaling An indication of the maximum round trip delay received; an indication of resource configuration related to the measurement reference signal; an indication of the maximum number of retransmissions of the data packet; an indication of the maximum transmission time of the data packet, that is, a predetermined time; and the second beam group An indication of the number of transmit beam directions; the receiving station is configured to send an indication related to the power boost level for determining the acknowledgement information of the transmitted data packet. The resource configuration related indication that specifies the measurement reference signal includes at least one of a frequency resource, a time resource, and a reference signal sequence used to specify the reference signal.

After receiving a confirmation for determining the transmission of the data packet from the receiving station after a predetermined number of retransmission attempts on the first beam group or within a predetermined time, the transmission control signaling triggers the use of the designated reference signal on the second beam group. The channel link quality is measured.

Measuring the quality of the channel link on the second beam group using the specified measurement reference signal comprises: sequentially measuring each beam in the second beam group of the transmitting station and each beam in the third beam group of the receiving station in a certain order using the specified measurement reference signal. The quality of the channel link between.

Receiving station:

The fast link recovery method for high frequency mobile broadband communication includes: using omnidirectional or beam A characteristic antenna attempts to receive a data packet from a first beam group of the transmitting station; an antenna that uses omnidirectional or beam characteristics attempts to receive a specified measurement reference signal from the second beam group of the transmitting station, and measures the channel link on the second beam group Quality, and feedback one or more beam information with optimal channel link quality; using omnidirectional or beamed antennas to receive data packets or receive new ones from one or more beams with optimal channel link quality correspondence data pack. The second beam group is one or more beams that are pre-defined or pre-selected or configured by the base station for fast link recovery, and the second beam group is adjacent to and/or identical to the first beam group. One or more beams.

Upon receiving a data packet from the transmitting station after a predetermined number of attempts from the first beam set or within a predetermined time, an attempt is made to receive a specified measurement reference signal from the second beam group of the transmitting station.

A specified measurement reference signal is received on the configured time/frequency resource for measuring channel link quality on the second beam group.

Before using an omnidirectional or beam-oriented antenna to attempt to receive a data packet from the receiving station on the first beam group, receiving control signaling for scheduling the data packet from the transmitting station, wherein at least one control signaling includes At least one of the information for measuring the quality of the channel link on the second beam group for receiving the specified reference signal: the data packet scheduled for the control signaling is an initial transmission or an indication of the first retransmission; An indication of a maximum round trip delay for one transmission and reception of a data packet scheduled by the control signaling; an indication of resource configuration related to the measurement reference signal; an indication of the maximum number of retransmissions of the data packet; a maximum transmission time limit of the data packet is predetermined An indication of time; an indication of the number of transmit beam directions included in the second direction or the third direction; the receiving station is configured to feed back an indication of the power boost level associated with the acknowledgment information used to determine the transmitted data packet. The resource configuration related indication that specifies the measurement reference signal includes at least one of a frequency resource, a time resource, and a reference signal sequence used to specify the reference signal.

Receiving a robust control signal from the transmitting station before receiving the data packet from the first beam group of the transmitting station using an omnidirectional or beam-forming antenna, the control signaling notifying the receiving station of at least one of the following information For measuring the quality of the channel link on the second beam group for receiving the specified measurement reference signal: the data packet scheduled for the control signaling is the first transmission or the indication of the first retransmission; the control signaling station An indication of a maximum round trip delay of one transmission and reception of the scheduled data packet; an indication of resource configuration related to the measurement reference signal; an indication of the maximum number of retransmissions of the data packet; an indication of a maximum transmission time limit of the data packet, that is, a predetermined time; An indication of the number of transmit beam directions included in the second direction or the third direction; the receiving station is configured to feed back an indication related to the power boost level for determining the acknowledgement information of the transmitted data packet. The resource configuration related indication that specifies the measurement reference signal includes at least one of a frequency resource, a time resource, and a reference signal sequence used to specify the reference signal.

After receiving a data packet from the transmitting station after a predetermined number of attempts on the first beam or within a predetermined time, attempting to receive control signaling, the control signaling includes at least triggering the specified reference signal on the second beam group Signaling link quality indicator signaling for measurement.

While attempting to receive a data packet from the first beam group of the transmitting station using an omnidirectional or beam-oriented antenna, attempting to receive a specified measurement reference signal from the second beam group of the transmitting station, once receiving the specified measurement reference signal, The quality of the channel link on the second beam set is measured.

Attempting to receive the specified measurement reference signal from the second beam group to measure the channel link quality on the second beam group includes: sequentially measuring each beam and the receiving station in the second beam group of the transmitting station by receiving the specified measurement reference signal in a certain order Signalling link quality between beams in a triple beam set.

Feedback of the one or more beam information having the optimal channel link quality includes: feeding back one or more beam information having an optimal channel link quality using the specified power boost level.

Through the above-described fast link recovery method for high-frequency mobile broadband communication, the high-frequency mobile broadband communication system can quickly re-establish a link that has been deteriorated or disconnected by using an antenna having beam characteristics, and mitigating the use of beam characteristics. The delay caused by establishing a link between wireless devices of the antenna.

The invention will now be described in connection with preferred embodiments.

The fast link recovery method for high-frequency mobile broadband communication includes: a transmitting station transmits a data packet to a receiving station on a first beam group using an antenna having a beam characteristic; and the transmitting station uses an antenna having a beam characteristic in a second beam The group sends a specified measurement reference signal to the receiving station; the receiving station receives the specified measurement reference signal from the second beam group of the transmitting station, and measures the channel link quality on the second beam group; the receiving station according to the channel link quality measurement result Transmitting, to the transmitting station, one or more beam information having a downlink optimal channel quality in the second beam group; and then transmitting the station to the receiving station on one or more beams having the downlink optimal channel quality Packet or send a new packet.

The first beam group is composed of one or more beams, and the second beam group is composed of one or more beams configured for pre-selected or pre-selected or base station configuration for fast link recovery. Preferably, the second beam set consists of one or more beams adjacent to the first beam set. Preferably, the second beam group may further include a beam in the first beam group.

The sending station may trigger the specified reference signal to measure the channel link quality on the second beam group by sending control signaling to the receiving station, and the resource configuration information of the specified reference signal used for performing the channel link quality measurement may be It is pre-agreed by the sending station and the receiving station, or reserved by the network side, or indicated by the network side by the more robust control signaling, the control signaling of the scheduling data packet, or the data packet to the terminal. The resource configuration of the designated reference signal includes at least one of a frequency resource, a time resource, and a reference signal sequence used by the reference signal. Preferably, the measurement reference signal is specified for measuring the channel link quality on the second beam group on the frequency resource of the transmitted data packet. Preferably, the control signaling with higher robustness, the control signaling of the scheduling data packet, or the data packet may further include an indication that the data packet is sent for the first time or is retransmitted for the first time, a single transmission of the data packet, and The indication of the maximum round trip delay received, and the maximum number of retransmissions of the data packet The indication, the maximum transmission time limit of the data packet, that is, the indication of the predetermined time, the indication of the transmission beam included in the second beam group, and the indication of the power boosting level used by the receiving station to determine the acknowledgment information for transmitting the data packet are at least One.

The transmitting station can also send a specified measurement reference signal to the receiving station in a periodic manner. Wherein, the resource specifying the measurement reference signal may be predefined or configured by the base station.

The receiving station may attempt to receive the specified measurement reference signal from the second beam group while attempting to receive the data packet from the first beam group of the transmitting station, and once the specified measurement reference signal is received from the second beam group, the second beam group is received The quality of the channel link on the measurement is measured.

If the receiving station also uses the antenna with beam characteristics to transmit the feedback information, the transmitting station can also send the uplink optimal beam to the receiving station while transmitting the acknowledgement information or retransmitting the data packet to the receiving station. Information, both the transmitting station and the receiving station update the uplink optimal beam information to facilitate subsequent transmission and feedback of downlink data packets and/or transmission and feedback of uplink data packets of the transmitting station and the receiving station.

Preferably, if the receiving station receives the omnidirectional reception or the quasi-omnidirectional antenna, the transmitting station uses the specified measurement test signal to measure the channel quality on the second beam group, wherein the second beam group may or may not include the first Beam of the beam group.

If the receiving station uses an antenna with beam characteristics for reception, assuming that the receiving station uses the third beam group for reception, then the receiving station uses the specified measurement reference signal to measure the channel link quality on the second beam group including: using the specified measurement reference The signal sequentially measures the channel link quality between each beam in the second beam group of the transmitting station and each beam in the third beam group of the receiving station in a certain order, wherein the second beam group includes all the beams in the first beam group.

Preferably, the receiving station may transmit feedback information of one or more beams having an optimal downlink channel quality to the transmitting station using the specified power boosting level.

FIG. 10 is a flowchart of a fast link recovery method for high frequency mobile broadband communication according to an embodiment of the present invention. As shown in FIG. 10, the method includes the following steps:

Step S1002: The sending station sends a data packet on the first beam group.

In an embodiment of the present invention, after the sending station sends the N times data packet on the first beam group, or after receiving the acknowledgement information of the received data packet fed back by the receiving station within a predetermined time, the sending station considers that The link of the data packet is deteriorated or disconnected, and the data packet transmission fails. At this time, the receiving station will decide to measure the channel quality of the adjacent beam group by using the specified measurement reference signal.

The value of N or the predetermined length of time may be pre-agreed by the network side and the terminal, or may be notified to the terminal by the network side through common signaling, control signaling, or the like.

The network side and the terminal can count the value of N in one of the following ways:

method one:

The network side sends a control signaling for scheduling the data packet before sending each data packet (including the retransmitted data packet);

The terminal assumes that the control signaling is received every time, and the terminal counts the data packets sent by the network side according to the new data packet in the control signaling or the retransmission data packet every time the control signaling is received.

Method 2:

The network side sends control signaling for scheduling the data packet at least once before the N times data packet sent to the terminal, where the control signaling includes the corresponding scheduled data packet being sent a few times, and may also include The maximum round trip delay for each packet sent and received.

The terminal synchronously counts the data packets by receiving the above control signaling.

Method three:

The network side transmits the designated measurement reference signal to the terminal on the second beam group while transmitting the data packet with the first beam group or after failing to transmit the N data packet with the first beam group.

The terminal attempts to receive the specified measurement reference signal from the second beam group simultaneously on each subframe that attempts to receive the data packet from the first beam group, and if the specified measurement reference signal is blindly detected, the specified reference signal pair is utilized. The quality of the channel link on the two beam sets is measured and fast rechannel link recovery is performed.

Preferably, the specified reference signal may be triggered by control signaling, and the control signaling may further include an indication of the resource used for the specified reference signal. The usage resources of the designated reference signal include, but are not limited to, a time domain resource, a frequency domain resource, a reference signal sequence, and the like.

Method 4:

The network side uses the more robust control signaling to notify the terminal of the maximum deadline for the transmission of the data packet before the first transmission of the data packet. The network side starts transmitting the data packet for the first time, if it is within this time limit. If the acknowledgment from the terminal is received, the link is considered to be deteriorated or disconnected. After the time limit expires, the network side immediately transmits the specified sounding reference signal to the beam in the second beam group. Perform link quality measurement and enter the fast link recovery process;

The terminal obtains the maximum transmission time limit of the data packet by receiving the robust control signaling. Once the transmission time from the receipt of the control signaling exceeds the maximum transmission time limit, the data packet has not been received yet. . The terminal considers that the data packet transmission fails, and receives the specified sounding reference signal for the second beam group. The link quality is measured and enters the fast link recovery process.

Preferably, the control signaling with high robustness refers to control signaling that is less affected by changes in external conditions such as terminal movement, terminal rotation, channel conditions, etc., and the terminal is relatively easy to detect and receive the control signaling. Usually, such control signaling is broadcast signaling or common signaling, etc., using a wider beam or lower frequency resources for transmission, and may be sent in a certain period.

In another embodiment of the present invention, the designated reference signal does not have to be sent by the transmitting station to the receiving station after the packet transmission failure, but is in a periodic manner on a predefined or base station configured resource. Send to the receiving station at regular intervals. The receiving station periodically measures the channel link quality of the second beam group, and the receiving station periodically feeds back one or more beam information corresponding to the optimal channel link quality in the second beam group to the transmitting station, or the receiving station only determines If the data packet transmission fails, one or more beam information corresponding to the optimal channel link quality is fed back to the transmitting station.

Step S1004: The transmitting station sends the specified measurement reference signal on the second beam group.

The transmitting station may send the designated measurement reference signal to the receiving station on the second beam group of the transmitting station on the designated resource in a periodic manner or a triggering manner.

The resource that specifies the measurement reference signal may be notified to the terminal in a predefined manner, or through higher layer signaling or more robust control signaling, or may be downlink/uplink control signaling that is transmitted to the terminal most recently or The data packet indicates resource configuration information of the reference signal to the terminal.

The resource specifying the measurement reference signal includes a time domain resource, a frequency domain resource, a reference signal sequence, and the like used by the measurement reference signal.

Preferably, the network side may transmit the specified measurement reference signal on the continuous measurement time unit of the transmitted data packet, or transmit the specified measurement reference signal on different measurement frequency units of the transmitted data packet, or in the same measurement time unit, the same Different measurement reference sequences are transmitted on the measurement frequency unit. The measurement time unit, the measurement frequency unit, and the measurement reference signal sequence are pre-agreed by the network side and the terminal, or are notified to the terminal by the network side through common signaling, or are notified to the terminal by the network side through high layer signaling, or It is related to at least one of a terminal identifier (Identity, abbreviated as ID), a cell ID where the terminal is located, a packet size sent to the terminal, a service type, and the like.

The measurement time unit may be a system time unit or consist of a set of continuous or non-continuous system time units; each measurement time unit is used to measure the channel link quality or receive signal between one of the pair of beams in step 3. Signal to Interference and Noise Ratio (SINR); a plurality of measurement time units constitute (after the packet transmission fails) the measurement time resource of the fast link recovery process.

Measuring frequency unit, being a system frequency unit, or consisting of a set of continuous or non-continuous system frequency unit groups Each measurement frequency unit is used to measure the received SINR of one of the pair of beam pairs in step 3; the plurality of measurement frequency units constitute (after the data transmission fails) the measurement frequency resource of the fast link recovery process.

The measurement time resource or the measurement frequency resource may be reserved by the network side for the fast link recovery process, for example, the measurement time resource is periodic, and the measurement frequency resource is the system bandwidth; or may be the data packet transmitted to the terminal. All or part of the time or frequency resource occupied.

After the data packet fails N times or does not receive the acknowledgement information within a predetermined time, the network side may also trigger the specified measurement reference signal to perform fast link recovery by using control signaling. The control signaling may also include a resource configuration for the sounding reference signal.

Step S1006: The receiving station separately measures the received SINR on the beam in the second beam group.

If the receiving station uses an omnidirectional or quasi-omnidirectional antenna for reception, measuring the received SINR on the second beam group includes: respectively, between each beam in the second beam group and the omnidirectional or quasi-omnidirectional antenna used by the receiving station Channel link quality.

If the receiving station uses the antenna having the beam characteristic for receiving, and if the receiving uses the third beam group for receiving, measuring the received SINR on the second beam group includes: measuring each beam in the second beam group and the receiving station third, respectively. The quality of the channel link between the individual beams in the beam.

The beam in the second beam group is one or more beams adjacent to the beam in the first beam group. Preferably, the second beam group may also include all beams in the first beam group.

For example, FIG. 11a is a first diagram showing a relationship between a second beam group and a first beam group according to an embodiment of the present invention. As shown in FIG. 11a, the first beam group is composed of beam 0, and beam 1 and beam 11 are beam 0. The adjacent beam, the second beam group is composed of beam 1 and beam 11; FIG. 11b is a relationship between the second beam group and the first beam group according to an embodiment of the present invention, and FIG. 11b, the first beam group Still consisting of beam 0, beam 1, beam 2, beam 10 and beam 11 are adjacent beams of beam 0, and second beam group consists of beam 1, beam 2, beam 10 and beam 11; Figure 11c is implemented in accordance with the present invention The relationship between the second beam group and the first beam group is shown in FIG. 11c, and FIG. 11d is a relationship between the second beam group and the first beam group according to an embodiment of the present invention. As shown in Figure 11d, the second beam group contains, in addition to the first beam set (beam 0 in Figure 11c or 11d) adjacent beams (beam 1 and beam 11 in Figure 11c, in Figure 11d) In addition to beam 1, beam 2, beam 10 and beam 11), all beams in the first beam group are also included (in eg 11c or 11d) The beam is 0).

Each beam direction can be measured on one measurement time unit or multiple measurement time units can be assigned for measurement.

Step S1008: The receiving station updates the optimal beam information, and feeds the optimal beam information to the sending station.

If the receiving station uses omnidirectional or quasi-omnidirectional antenna transmission, the receiving station uses omnidirectional or quasi-omnidirectional The line feeds back downlink optimal beam information to the transmitting station.

Otherwise, if the receiving station uses the antenna with beam characteristics to transmit in the uplink, the receiving station feeds the downlink optimal beam information to the transmitting station. The following processing methods may exist:

method one:

If the channel satisfies the uplink and downlink reciprocity, such as a Time Duplex Division (TDD) system, the receiving station uses the optimal receive beam group indicated by the downlink optimal beam information as the uplink beam group to downlink. The optimal beam information is fed back to the transmitting station. Preferably, the mode is applicable to the channel characteristics satisfying the uplink and downlink reciprocity, such as in a Time Duplex Division (TDD) system.

Method 2:

The receiving station uses the uplink first beam group to feed back the optimal downlink beam information to the sending station; if the sending station receives the optimal downlink beam information, the sending station feeds back an acknowledgement message to the receiving station; if the receiving station repeatedly sends M times of feedback information After receiving the acknowledgment information from the transmitting station or within a predetermined time, the receiving station attempts to transmit beam information on the uplink second beam group, and if the receiving station repeatedly transmits M times of feedback information or receives within a predetermined time, When the acknowledgment received information from the transmitting station is received, both the transmitting station and the receiving station update the optimal downlink beam information; otherwise, it is considered that the fast link recovery fails, and the device discovery process is started. The uplink first beam group is composed of one or more receiving station uplink transmit beams, and the uplink second beam group is composed of one or more receiving station uplink transmit beams adjacent to the uplink first beam group, preferably, uplink The beams in the first beam group may also be included in the second beam group.

Preferably, the value of M or the predetermined time range may be pre-agreed by the network side and the terminal, or notified to the terminal by the network side through common signaling, control signaling, or the like.

Preferably, in the process of repeatedly transmitting the feedback information, the receiving station may send the feedback information on the uplink by using a power boosting level. For example, the receiving station first uses the power P to send feedback information, and the second time increases the transmission power by one level and then transmits, for example, the second time using the power P+Δ to transmit, and so on, the Mth can use the power P+ ( M-1) Δ is transmitted. Of course, the transmission power of the receiving station after power boosting cannot exceed the maximum transmitting power of the receiving station, otherwise it can only be transmitted with the maximum transmitting power.

It should be noted that, for convenience of description, the link between the transmitting station and the receiving station is referred to as downlink or downlink, and correspondingly, the link between the receiving station and the transmitting station is referred to as uplink or uplink. link.

Method 2:

The receiving station sequentially uses the all beams in the uplink second beam group to feed back the downlink optimal beam information to the transmitting station at the same time or in a certain order; after receiving the feedback information, the transmitting station sends the acknowledgement information to the receiving station, and the sending station and the receiving station update. Downlink optimal beam information; if the receiving station repeatedly transmits M feedback signals on the second beam group After the information is received or the acknowledgment received from the sending station is not received within the predetermined time range, the fast link recovery fails and the device discovery process is performed.

Method three:

The receiving station uses all uplink beams in time division (for example, configuring different measurement time units for different beams), frequency division (for example, configuring different measurement frequency units for different beams), code division (for example, configuring different sounding reference signal sequences for different beams) or The feedback information is transmitted in a manner of spatial division (for example, configuring the same measurement reference signal sequence for different beams); the transmission station receives the feedback information, and both the transmitting station and the receiving station update the downlink optimal beam information.

Method 4:

The receiving station uses the first beam group to feed back downlink optimal beam information to the transmitting station; if the transmitting station receives the downlink optimal beam feedback information, the transmitting station sends an acknowledgement message to the receiving station, and both the transmitting station and the receiving station Updating the downlink optimal beam information; if the receiving station does not receive the acknowledgment from the transmitting station after repeatedly transmitting the M feedback information or within a predetermined time range, the receiving station attempts to send the downlink on the second beam group. Link optimal beam information, if the transmitting station can receive downlink optimal beam feedback information from the second beam group of the receiving station, both the transmitting station and the receiving station update the downlink optimal beam information; the transmitting station utilizes the downlink The optimal beam of the road sends an acknowledgement message to the terminal, and both the transmitting station and the receiving station update the uplink optimal beam information.

The value of the M or the predetermined time range may be pre-agreed by the network side and the terminal, or may be notified to the terminal by the network side through common signaling, control signaling, or the like.

The uplink optimal beam information may be sent to the terminal together with the acknowledgement information sent by the sending station to the terminal to confirm receipt of the downlink optimal beam feedback information.

Method 5:

The receiving station simultaneously feeds the downlink optimal beam information to the transmitting station by using all the beams in the second beam group at the same time or in a certain order. After receiving the feedback information, the transmitting station sends an acknowledgement message to the receiving station, and the transmitting station and the receiving station update the downlink optimal beam information. Further, the transmitting station uses the updated downlink optimal beam to optimize the uplink. The beam information is sent to the receiving station, and both the transmitting station and the receiving station update the uplink optimal beam information; if the receiving station repeatedly transmits the M downlink optimal beam feedback information or does not receive the transmission from the predetermined time range If the acknowledgment of the station is received, the fast link recovery fails and the device discovery process is performed.

Method six:

The receiving station may use all uplink beams to transmit downlink optimal beam feedback information in a time division, frequency division, and code division manner; the transmitting station receives the feedback information, and both the transmitting station and the receiving station update the downlink optimal beam information, Further, the transmitting station transmits the uplink optimal beam information to the receiving station by using the updated downlink optimal beam, and both the transmitting station and the receiving station update the uplink optimal beam information; if the receiving station repeatedly transmits M times After the downlink optimal beam feedback information or the acknowledgment received information from the transmitting station is not received within the predetermined time range, the fast link recovery is considered to be failed, and the device discovery process is performed.

Step S1010: The transmitting station sends data in the updated optimal beam direction.

The transmitting station updates its downlink first beam group to refer to the downlink optimal beam information fed back by the receiving station. After the downlink optimal transmit beam (including one or more beams) is shown as the transmitting station, the transmitting station may retransmit the original data packet on the updated first beam group, or discard the original data packet to transmit a new data packet.

Application Example 1

The transmitting station transmits the data packet to the receiving station on the first beam group using the antenna having the beam characteristic; is not received from the receiving station for determining the transmission after a predetermined number of retransmission attempts on the first beam group or within a predetermined time When the information of the data packet is confirmed, the channel link quality on the beam of the second beam group of the transmitting station is measured using the specified measurement reference signal; the receiving station uses the received measurement reference signal to obtain the beam from the second beam group. Receiving the SINR, and feeding back one or more beams corresponding to the maximum received SINR to the transmitting station; after receiving the feedback information from the receiving station, the transmitting station updates the downlink optimal beam information, that is, transmitting the downlink first beam of the station The group is updated to the optimal beam and the packet is retransmitted using the optimal beam. If the retransmitted data packet still does not receive the acknowledgment from the receiving station, the base station considers that the fast link recovery fails, and starts the device discovery process, that is, rescanning and measuring all the beams to find the optimal one or Multiple beams are used as the new transmitting station to downlink the first beam group. Preferably, the above process is particularly suitable for scenarios where the receiving station is directionally received. In this scenario, using a specified measurement reference signal to measure channel link quality on a beam in the second beam set includes measuring a channel between each beam in the second beam group of the transmitting station and the receiving station using the specified measurement reference signal Link quality. For example, as shown in FIG. 11a, the first beam group of the transmitting station is composed of beam 0, and the second beam group is composed of beam 1 and beam 11, and the channel link quality measurement on the beam in the second beam group is performed using the specified measurement reference signal. The method includes: measuring, by using a specified reference signal, a channel link quality between the transmitting station beam 1 and the receiving station, between the transmitting station beam 11 and the receiving station; and as shown in FIG. 11b, the transmitting station first beam group is composed of the beam 0. The second beam group is composed of beam 1, beam 2, beam 10 and beam 11, and the measurement of the channel link quality on the beam in the second beam group using the specified measurement reference signal comprises: measuring the transmitting station beam 1 using the specified reference signal Channel link quality measurements between the transmitting station and the receiving station, between the transmitting station beam 2 and the receiving station, between the transmitting station beam 10 and the receiving station, between the transmitting station beam 11 and the receiving station.

In the embodiment of the present invention, the non-directional reception refers to receiving using an omnidirectional or quasi-omnidirectional antenna. Correspondingly, the directional reception in the embodiment of the present invention refers to receiving using an antenna having a beam characteristic, and the directional transmission refers to transmitting using an antenna having a beam characteristic, and the non-directional transmission refers to using an omnidirectional antenna or a quasi-omnidirectional antenna. emission.

12 is a flowchart of a fast link recovery method in which a terminal is assumed to be non-directionally received according to an embodiment of the present invention. As shown in FIG. 12, assuming that the terminal performs non-directional reception, that is, performing omnidirectional or quasi-omnidirectional reception, In this case, it is only necessary to re-measure one or more beams adjacent to the first beam group of the base station, or to measure the beams in the second beam group of the base station, where the second beam group does not Contains beams in the first beam set. The base station transmits a data packet on the first beam group, and waits for the acknowledgement of the receiving terminal to receive the information; if the base station receives the confirmation information from the terminal after transmitting the predetermined number of times (assumed to be N times) or within a predetermined time, Then, the base station determines whether it is necessary to send the next data packet. If the next data packet needs to be sent, the next data packet still starts to be sent in the first direction, otherwise the data packet is successfully sent, and the current link transmission is ended; The base station sends the specified measurement reference signal on the beam of the second beam group respectively, and the resource configuration information specifying the measurement reference signal may be the base station and the terminal in advance. The agreement is good, or is notified to the terminal by the base station through common signaling or control signaling; the terminal respectively obtains the received SINR of the base station on the beam of the second beam group according to the received measurement reference signal, and corresponds to the maximum received SINR. The one or more beam information, that is, the optimal beam information, is fed back to the base station; after receiving the feedback information of the terminal, the base station updates the downlink optimal beam information according to the optimal beam information indicated by the feedback information, and is updated. Retransmit the data packet in the optimal beam direction; the base station waits to receive the confirmation message from the terminal When the base station transmits the acknowledgment information from the terminal in the optimal beam direction for a predetermined number of times (assumed to be M) or within a predetermined time, it is considered that the fast link recovery fails and the device discovery process is started; otherwise, the data is The packet is successfully transmitted. If it is necessary to send the next data packet, the first beam group is updated to be composed of the optimal beam, and the next data packet is transmitted on the updated first beam group. The waiting time of the base station after transmitting the data packet in the first direction and the waiting time of the base station after retransmitting the data packet in the updated beam direction may be the same, or may be independent agreement or notification.

The base station has a plurality of definitions or implementation manners after the data packet is transmitted on the first beam group or after the data packet is retransmitted in the updated beam direction, or the time when the specified measurement reference signal is sent, and the base station is in the first beam group. The typical waiting time after sending a data packet or the time when a specified measurement reference signal is sent is used as an example to describe several typical definitions or implementation manners.

A definition or implementation manner in the embodiment of the present invention is that the base station counts the number of transmission/reception of the data packet by using the control signaling of the scheduling data packet to trigger the specified measurement reference signal for performing fast link recovery, where Each time a data packet is transmitted, there is a control signaling for scheduling the data packet. Preferably, it is assumed that the control signaling of the scheduling data packet is transmitted to the terminal through a wide beam or an omnidirectional beam. FIG. 13a is a schematic diagram 1 of a process for counting the number of transmission/reception times of a data packet by scheduling control signaling of a data packet according to an embodiment of the present invention. As shown in FIG. 13a, assuming that N is equal to 2, the base station is in the first beam. After the data packet is sent twice in the group, the acknowledgment received information of the terminal feedback is still not received. At the next transmission time, the base station sends a specified measurement reference signal to the terminal on the beam of the second beam group; the terminal cannot receive the data. Packet, but since the control signaling for scheduling the data packet is transmitted through a wide beam or an omnidirectional beam, smaller terminal movement, terminal rotation or channel change does not affect the reception of control signaling, so usually the terminal After receiving the control signaling, the terminal receives the control signaling of the scheduling data packet twice, but does not receive the corresponding data packet, and at the next receiving moment, the terminal attempts to receive the specified measurement parameter for fast link recovery. signal. The resource for measuring the reference signal may be pre-approved by the base station and the terminal, or notified by the base station to the terminal. Preferably, the resource for measuring the reference signal in this embodiment may be notified to the terminal by using control signaling of the scheduling data packet. .

Another definition or implementation manner in the embodiment of the present invention is a control signaling logarithm of a base station by scheduling a data packet. Counting according to the number of transmission/reception times of the packet, in order to trigger the specified measurement reference signal for performing fast link recovery, wherein it is assumed that there is control for scheduling the data packet before the transmission of the data packet at least one of the predetermined number of data packet transmissions Signaling, preferably assuming that the control signaling of the scheduling data packet is transmitted to the terminal through a wide beam or an omnidirectional beam. FIG. 13b is a schematic diagram of a process for counting the number of transmission/reception times of a data packet by scheduling control signaling of a data packet according to an embodiment of the present invention. As shown in FIG. 13b, it is still assumed that N is equal to 2, and the base station is at the first. After the data packet is sent twice on the beam group, the acknowledgment received information of the terminal feedback is still not received. At the next transmission time, the base station sends the specified measurement reference signal to the terminal on the beam of the second beam group respectively; the base station is the first time. Before the data packet is sent, the control signaling for scheduling the data packet is sent, where the control signaling includes at least the first data packet transmission and/or the maximum data packet transmission and reception scheduled for the control signaling. The time or time rule, wherein the maximum time or time of each data packet transmission and reception may also be pre-agreed by the base station and the terminal; although the terminal does not receive the data packet, the control signaling for scheduling the data packet is Transmitted by wide beam or omnidirectional beam, so smaller terminal movement, terminal rotation or channel change does not connect control signaling The receiving terminal is able to receive the control signaling, and the terminal determines the receiving time of the first data packet and the receiving time of the second data packet by the control signaling, when there is no time in the two times. Upon receipt of the corresponding data packet, at the next reception time, the terminal will attempt to receive the specified measurement reference signal for fast link recovery. The resource for measuring the reference signal may be pre-approved by the base station and the terminal, or notified by the base station to the terminal. Preferably, the resource for measuring the reference signal in this embodiment may be notified to the terminal by using control signaling of the scheduling data packet. .

Another definition or implementation in an embodiment of the invention is to trigger a specified measurement reference signal for fast link recovery by scheduling a maximum latency. 13c is a third schematic diagram of a process of counting the number of transmission/reception times of a data packet by scheduling control signaling of a data packet according to an embodiment of the present invention. As shown in FIG. 13c, the base station transmits a data packet on the first beam (possibly It may be one time or multiple times, but if the acknowledgment received information of the terminal feedback is not received within the predetermined waiting time, the base station is respectively on the beam of the second beam group at the next next transmission time after the waiting time. The specified measurement reference signal is sent to the terminal; the terminal attempts to receive the specified measurement reference signal while attempting to receive the data packet until the specified measurement reference signal is detected, and the terminal enters the fast link recovery process. The resource for measuring the reference signal and the predetermined maximum waiting time may be pre-approved by the base station and the terminal, or notified by the base station to the terminal. Preferably, the resource of the reference signal in the implementation of the Lizhong may be notified through public signaling. To the terminal, where the common signaling is usually sent to the terminal using a wide beam or an omnidirectional beam. Preferably, the terminal may start timing according to the time when the control signaling corresponding to the first data packet transmission is received.

Application Example 2

The transmitting station transmits the data packet to the receiving station on the first beam group using the antenna having the beam characteristic; and does not receive the data for determining the transmission data from the receiving station after a predetermined number of retransmission attempts in the first direction or within a predetermined time When the acknowledgment information of the packet is used, the channel chain on the beam of the second beam group of the transmitting station is specified using the measurement reference signal The road quality is measured; the receiving station uses the received measurement reference signal to obtain the received SINR on the beam from the second beam group, and feeds one or more beams corresponding to the maximum received SINR to the transmitting station; the transmitting station receives the received After receiving the feedback information of the station, the downlink optimal beam information is updated, and the data packet is retransmitted by using the optimal beam. If the retransmitted data packet still does not receive the acknowledgement information from the receiving station, the base station considers that the fast link recovery fails, and starts the device discovery process, that is, rescanning and link quality measurement for all beam directions, and The optimal beam direction is found as a new first beam group to transmit subsequent data packets. Preferably, the above process is particularly suitable for scenarios where the receiving station is directionally received. In this scenario, using the specified measurement reference signal to measure channel link quality on the beam in the second beam set includes measuring each beam in the second beam group of the transmitting station and the third beam group in the receiving station using the specified measurement reference signal The quality of the channel link between the individual beams. The third beam group of the receiving station includes one or more beams that the receiving station receives using an antenna having beam characteristics. For example, the first beam group of the transmitting station is composed of beam 0, the second beam group is composed of beam 0, beam 1 and beam 11 (as shown in Fig. 11c), and the third beam group of the receiving station is composed of beam 0, beam 1 and beam 11. And measuring, by using the specified measurement reference signal, the quality of the channel link quality on the beam in the second beam group comprises: using the specified reference signal to measure between the transmitting station beam 0 and the receiving station beam 0, the transmitting station beam 0, and the receiving station beam 1 Between, between station beam 0 and receiving station beam 11, between station beam 1 and receiving station beam 0, between station beam 1 and receiving station beam 1, between station beam 1 and receiving station beam 11. The channel link quality between the transmitting station beam 11 and the receiving station beam 0, between the transmitting station beam 11 and the receiving station beam 1, and between the transmitting station beam 11 and the receiving station beam 11.

14 is a flowchart of a fast link recovery method for assuming that a terminal is directional reception according to an embodiment of the present invention. As shown in FIG. 14, assuming that a terminal performs directional reception, not only the first beam group to the base station but also the base station is required. Measured by one or more adjacent beams, and the beam in the first beam group of the base station is also measured, or the beam in the second beam group of the base station is measured, where the second beam group includes the first A beam in a beam group. The base station transmits a data packet on the first beam group, and waits for the acknowledgement of the receiving terminal to receive the information; if the base station receives the acknowledgement information from the terminal for a predetermined number of times (assumed to be N times) or within a predetermined time, the base station determines whether it is necessary Sending the next data packet, if the next data packet needs to be sent, the next data packet is still sent on the current first beam group, otherwise the data packet is sent successfully, and the current link transmission is ended; if the base station is transmitting a predetermined number of times Or the acknowledgment information from the terminal is not received in the predetermined time, the base station separately sends the specified measurement reference signal on the beam of the second beam group, where the resource configuration information specifying the measurement reference signal may be pre-agreed by the base station and the terminal, Or the base station is notified to the terminal by using the common signaling or the control signaling; the terminal obtains the received SINR of the base station in the beam in the second beam group according to the received measurement reference signal, where the specific base station is included in the second beam group. Each of the beams and the receiving SINR of the terminal between the respective beams in the third beam group, and One or more beams corresponding to the large receiving SINR, that is, the optimal beam information is fed back to the base station; after receiving the feedback information of the terminal, the base station updates the downlink optimal beam information according to the optimal beam information indicated by the feedback information, And retransmitting the data packet in the updated optimal beam direction; the base station waits to receive the acknowledgement information from the terminal, and when the base station transmits the predetermined number of times (assumed to be M) or the predetermined time in the optimal beam direction If the acknowledgment information from the terminal is not received, the fast link recovery fails and the device discovery process is started. Otherwise, the data packet is sent successfully. If there is a need to send the next data packet, the updated optimal beam will be updated. As the first beam group, the next data packet is transmitted on the updated first beam group. The waiting time of the base station after transmitting the data packet on the first beam group and the waiting time of the base station after retransmitting the data packet in the updated beam direction may be the same, or may be an independent agreement or notification.

Application Example 3

The transmitting station transmits the data packet to the receiving station on the first beam group using the directional antenna; the confirmation for determining the transmission of the data packet is not received from the receiving station after a predetermined number of retransmission attempts in the first direction or within a predetermined time Information, using a specified measurement reference signal (or referred to as a pilot) to measure the channel link quality on the beam of the second beam group of the transmitting station; the receiving station obtains the second beam from the received measurement reference signal Receive SINR on the beam in the group, and feed back one or more beams corresponding to the maximum received SINR to the transmitting station using the antenna with beam characteristics of the receiving station; after receiving the feedback information from the receiving station, update the downlink The optimal beam direction information is used, and the optimal beam direction terminal is used to retransmit the data packet, and the uplink optimal beam direction information is indicated to the terminal. If the retransmitted data packet still has not received the acknowledgement information from the receiving station, the base station considers that the fast link recovery fails, and starts to perform the device discovery process, that is, rescanning and chaining all the beams of the transmitting station and the receiving station. The road quality is measured and the optimal beam is found as a new first beam group to transmit subsequent data packets. Preferably, the above process is particularly suitable for scenarios where the receiving station is directionally received. In this scenario, measuring the quality of the channel link on the beam in the second beam group using the specified measurement reference signal comprises measuring each beam in the second beam group of the transmitting station and the third beam group in the receiving station using the specified reference signal The quality of the channel link between the individual beams. Preferably, the uplink feedback is performed by using a beam in the uplink second beam group of the receiving station, wherein the uplink second beam group of the receiving station is composed of one or more beams adjacent to the uplink first beam group of the receiving station, Preferably, the uplink second beam group may further include a beam in the uplink first beam group, and the uplink first beam group is one or more beams used for triggering the uplink feedback of the receiving station before the fast link recovery.

15 is a flowchart of a fast link recovery method for assuming that a terminal is directionally received and directionally transmitted according to an embodiment of the present invention. As shown in FIG. 15, it is assumed that a terminal performs directional reception, in which case the base station is in a second beam group. The channel link quality of the beam is measured. The second beam group of the base station includes the beam in the first beam group, and the terminal is assumed to perform directional transmission. In this case, it is often necessary to update the downlink optimal beam. It is considered to update the uplink optimal beam to facilitate subsequent uplink packet transmission or feedback of uplink acknowledgement information. The base station transmits a data packet on the first beam group, and waits for the acknowledgement of the receiving terminal to receive the information; if the base station receives the acknowledgement information from the terminal for a predetermined number of times (assumed to be N times) or within a predetermined time, the base station determines whether it is necessary Sending the next data packet, if the next data packet needs to be sent, the next data packet is still sent on the current first beam group, otherwise the data packet is sent successfully, and the current link transmission is ended; if the base station is transmitting a predetermined number of times Or if the acknowledgment information from the terminal is not received within the predetermined time, the base station divides the beam in the second beam group. Do not send the specified measurement reference signal, where the resource configuration information of the specified measurement reference signal may be pre-approved by the base station and the terminal, or notified to the terminal by the base station through common signaling or control signaling; the terminal according to the received measurement reference signal Obtaining a received SINR of the base station on the beam of the second beam group, where the base station receives the received SINR between the beams of the second beam group and the respective beams of the third beam group, and corresponds to the maximum received SINR. One or more beams, ie, optimal beam information, are fed back to the base station using an antenna having beam characteristics, preferably the terminal transmits feedback information to the transmitting station on a second beam group in its uplink transmission link; if the base station does not receive The feedback information from the terminal, the base station considers that the fast link recovery fails, and starts to perform the device discovery process; otherwise, after receiving the feedback information of the terminal, the base station selects the optimal beam information of the downlink according to the optimal beam information indicated by the feedback information. Update and re-update on the updated optimal beam (new first beam group) Sending a data packet, and simultaneously notifying the uplink optimal beam information to the terminal; the base station waits to receive the acknowledgement information from the terminal, and when the base station transmits the predetermined number of times (assumed M times) and the predetermined time in the updated optimal beam direction If the acknowledgment information from the terminal is not received, the fast link recovery fails and the device discovery process is started. Otherwise, the data packet is sent successfully. If the next data packet needs to be sent, the first beam group of the base station is updated to The downlink optimal beam is then followed by the above process on the updated first beam set. The waiting time of the base station after transmitting the data packet on the first beam group and the waiting time of the base station after retransmitting the data packet in the updated downlink optimal beam direction may be the same, or may be independent agreement or notification, N The value may be identical to M, or it may be configured independently or notified to the terminal by the base station with independent parameters.

Application Example 4

The transmitting station transmits the data packet to the receiving station on the first beam group using the antenna having the beam characteristic; is not received from the receiving station for determining the transmission after a predetermined number of retransmission attempts on the first beam group or within a predetermined time When the information of the data packet is confirmed, the channel link quality on the beam of the second beam group of the transmitting station is measured using the specified measurement reference signal; the receiving station uses the received measurement reference signal to obtain the beam from the second beam group. Receiving the SINR, and feeding back information of one or more beams corresponding to the maximum received SINR to the transmitting station; after receiving the feedback information from the receiving station, the transmitting station determines whether the optimal beam is still the first beam group, and if so, Then, the device discovery process is performed, otherwise the downlink optimal beam information is updated, and the data packet is retransmitted by using the optimal beam direction; if the retransmitted data packet still does not receive the acknowledgement information from the receiving station, the base station considers the fast chain The road recovery failed and the device discovery process began. Preferably, if the receiving station is in a non-directional reception in the above process, the measurement of the beam in the second beam group using the specified sounding reference signal comprises separately channeling between each beam and the receiving station of the second beam group of the transmitting station. The quality is measured; if the receiving station is directional receiving in the above process, the channel quality between each beam of the second beam group of the transmitting station and each beam of the third beam group of the receiving station is respectively measured by using the specified sounding reference signal; In the above process, the receiving station is directional transmission, and may also include a feedback and update process for the uplink optimal beam, as shown in Application Embodiment 3.

16 is a flowchart of a fast link recovery method for assuming that a terminal is directional or non-directional, according to an embodiment of the present invention. As shown in FIG. 16, the following assumes that the terminal is non-directional reception as an example. Say Bright. The base station transmits a data packet on the first beam group, and waits for the acknowledgement of the receiving terminal to receive the information; if the base station receives the acknowledgement information from the terminal for a predetermined number of times (assumed to be N times) or within a predetermined time, the base station determines whether it is necessary Sending the next data packet, if the next data packet needs to be sent, the next data packet is still sent in the first direction, otherwise the data packet is sent successfully, and the current link transmission is ended; if the base station is transmitting a predetermined number of times or If the acknowledgment information from the terminal is not received within the predetermined time, the base station separately transmits the specified measurement reference signal on the beam of the second beam group, where the second beam group includes the beam of the first beam group, and the resource for the measurement reference signal is specified. The configuration information may be pre-agreed by the base station and the terminal, or notified to the terminal by the base station through common signaling or control signaling; the terminal respectively obtains the receiving of the base station in each beam in the second beam group according to the received measurement reference signal. SINR, and one or more beam information corresponding to the maximum received SINR, that is, optimal beam information feedback After receiving the feedback information of the terminal, the base station first determines whether the optimal beam direction indicated in the feedback information is still the first beam group. If the base station considers that the fast link recovery process fails, the base station starts to perform the device discovery process. Otherwise, the downlink optimal beam information is updated according to the optimal beam direction information indicated by the feedback information, and the data packet is retransmitted in the optimal beam direction; the base station waits to receive the acknowledgement received information from the terminal, when the base station is If the new first beam group is sent a predetermined number of times (assumed to be M) or the acknowledgment information from the terminal is not received within the predetermined time, the fast link recovery is considered to be failed, and the device discovery process is started; otherwise, the data packet is started. If the transmission is successful, if there is a need to send the next data packet, the updated optimal beam is used as the new first beam group, and the next data packet is sent on the updated first beam group. The predetermined number of times the data packet is transmitted by the first beam group or the waiting time of the base station and the predetermined number of times of retransmitting the data packet or the waiting time of the base station in the updated optimal beam direction may be the same, or may be an independent agreement or Noticed.

Obviously, those skilled in the art should understand that the above modules or steps of the embodiments of the present invention can be implemented by a general computing device, which can be concentrated on a single computing device or distributed in multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different from The steps shown or described are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps thereof are fabricated into a single integrated circuit module. Thus, embodiments of the invention are not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and 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.

Industrial applicability

As described above, with the above-described embodiments and preferred embodiments, it is solved that in the related art, when a wireless antenna is used to communicate between wireless devices using a high directional antenna, fast recovery cannot be achieved for a link that has deteriorated or disconnected. The quality of the communication link that affects the beam characteristics, causing serious transmission delay problems, and thus achieving When the communication between the wireless devices is performed by using the antenna with the beam characteristics, the optimal communication link can be re-established at a relatively fast speed, which is advantageous for improving the quality of the communication link having the beam characteristics and reducing the effect of the communication delay.

Claims

A data packet sending method includes:

Transmitting, by the antenna having beam characteristics, the first data packet to the receiving station on the first beam group;

Generating, by the antenna having beam characteristics, a predetermined measurement reference signal to the receiving station on a second beam set, wherein the second beam set includes a neighboring and/or the same one of the beams in the first beam set Or a plurality of beams, the predetermined measurement reference signal being used by the receiving station to measure channel link quality on the second beam group;

Receiving one or more quality beams in the second beam group fed back by the receiving station according to a measurement result of a channel link quality;

Transmitting a second data packet on the one or more premium beams.
The method of claim 1, wherein the predetermined measurement reference signal is transmitted to the receiving station on the second beam set using an antenna having beam characteristics if at least one of the following conditions is met:

After the first data packet is sent to the receiving station on the first beam group for more than a predetermined number of times, the acknowledgement feedback sent by the receiving station for indicating that the first data packet is received has not been received;

After the first data packet is sent to the receiving station on the first beam group for more than a predetermined time, the acknowledgement feedback sent by the receiving station for indicating that the first data packet is received has not been received.
The method according to claim 1, wherein before receiving the one or more quality beams in the second beam group fed back by the receiving station according to the measurement result of the channel link quality, the method further comprises: transmitting the trigger information by using The channel link quality on the second beam group is measured by triggering the receiving station to use the predetermined measurement reference signal.
The method according to claim 3, wherein the transmitting the trigger information to trigger the receiving station to measure the channel link quality on the second beam group using the predetermined measurement reference signal comprises at least the following One:

Sending the first control signaling to the receiving station, where the first control signaling carries the trigger information, where the first control signaling is a control signaling for scheduling the first data packet;

Sending the second control signaling to the receiving station, where the second control signaling carries the trigger information, and the second control signaling includes one of the following: broadcast control signaling, common control signaling ;

After determining that the first data packet is sent to the receiving station on the first beam group by using the antenna having the beam characteristic, sending a third control signaling to the receiving station, where the third control signaling carries Description Trigger information.
The method of claim 3, wherein the trigger information comprises at least one of:

Instructing information for instructing the transmitting station to start transmitting the predetermined measurement reference signal;

The indication information used to indicate that the first data packet is sent for the first time or is retransmitted for the first time;

Instructing information indicating a maximum round trip delay of one transmission and reception of the first data packet;

And indication information indicating a resource configuration of the measurement reference signal, where a resource configuration of the measurement parameter signal includes at least one of: a frequency resource used by the measurement reference signal, and a used by the measurement reference signal a time resource, a corresponding reference signal sequence of the measurement reference signal;

Instructing information indicating a maximum number of retransmissions of the first data packet;

Instructing information indicating a maximum transmission time limit of the first data packet;

And indication information indicating a number of transmission beam directions included in the second beam group or a included transmission beam;

And indication information for instructing the receiving station to feed back a power boosting level for determining an acknowledgement message for sending the first data packet.
The method according to any one of claims 1 to 5, wherein all or part of the data information in the first data packet is included in the second data packet.
A data packet receiving method includes:

Using an omnidirectional antenna or an antenna having beam characteristics to attempt to receive a first data packet from a first beam group of a transmitting station;

Using an omnidirectional antenna or an antenna having beam characteristics to attempt to receive a predetermined measurement reference signal from a second beam group of the transmitting station, wherein the second beam group comprises adjacent and/or the same beam as the beam in the first beam group One or more beams;

Measuring, by the predetermined measurement reference signal, a channel link quality on the second beam group, determining one or more quality beams in the second beam group, and one of the second beam groups Or multiple quality beam information is fed back to the sending station;

Receiving a second data packet on the one or more premium beams.
The method according to claim 7, wherein the omnidirectional antenna or the antenna having the beam characteristic is used to attempt to receive the predetermined measurement parameter from the second beam group of the transmitting station, if at least one of the following conditions is satisfied Test signal:

The number of attempts to receive the first data packet from the first beam group of the transmitting station exceeds a predetermined number of times, and the first data packet has not been received;

The first data packet is not received from the first beam group of the transmitting station for more than a predetermined time.
The method of claim 7, wherein the channel link quality on the second beam set is measured using the predetermined measurement reference signal to determine one or more quality beams in the second beam set The method further includes: triggering, by receiving the trigger information, using the predetermined measurement reference signal to measure a channel link quality on the second beam group.
The method of claim 9, wherein the measuring the channel link quality on the second beam set using the predetermined measurement reference signal by receiving trigger information comprises at least one of the following:

Receiving, by the sending station, the first control signaling, where the first control signaling carries the trigger information, where the first control signaling is a control signaling for scheduling the first data packet. ;

Receiving the second control signaling sent by the sending station, where the second control signaling carries the trigger information, and the second control signaling includes one of the following: broadcast control signaling, public control Signaling

After determining that an omnidirectional antenna or an antenna having beam characteristics attempts to receive the first data packet from the first beam group of the transmitting station, receiving a third control signaling sent by the transmitting station, where The trigger information is carried in the third control signaling.
The method of claim 9, wherein the trigger information comprises at least one of:

Instructing information for instructing the receiving station to start receiving the predetermined measurement reference signal;

The indication information used to indicate that the first data packet is sent for the first time or is retransmitted for the first time;

Instructing information indicating a maximum round trip delay of one transmission and reception of the first data packet;

And indication information indicating a resource configuration of the measurement reference signal, where a resource configuration of the measurement parameter signal includes at least one of: a frequency resource used by the measurement reference signal, and a used by the measurement reference signal a time resource, a corresponding reference signal sequence of the measurement reference signal;

Instructing information indicating a maximum number of retransmissions of the first data packet;

Instructing information indicating a maximum transmission time limit of the first data packet;

And indication information indicating a number of transmission beam directions included in the second beam group or a included transmission beam;

And indication information for instructing the receiving station to feed back a power boosting level for determining an acknowledgement message for sending the first data packet.
The method of claim 9, wherein the channel link quality on the second beam set is measured using the predetermined measurement reference signal to determine the one or more qualities in the second beam set The beam includes:

And measuring, according to the received measurement reference signal, the signaling link quality between each beam in the second beam group of the sending station and each beam in the predetermined third beam group of the receiving station in a predetermined order;

The one or more quality beams are selected from the second beam group based on measurements of signaling link quality.
The method according to any one of claims 9 to 12, wherein all or part of the data information in the first data packet is included in the second data packet.
A data packet transmitting apparatus includes:

a first sending module, configured to send, by using an antenna having a beam characteristic, a first data packet to the receiving station on the first beam group;

a second transmitting module, configured to transmit, by using an antenna having a beam characteristic, a predetermined measurement reference signal to the receiving station on a second beam group, wherein the second beam group includes a beam phase in the first beam group Neighboring and/or identical one or more beams, said predetermined measurement reference signal being used by said receiving station to measure channel link quality on said second beam group;

a first receiving module, configured to receive one or more quality beams in the second beam group fed back by the receiving station according to a measurement result of a channel link quality;

And a third sending module, configured to send the second data packet on the one or more quality beams.
The apparatus according to claim 14, wherein the second transmitting module is further configured to receive the receiving on the second beam group using an antenna having beam characteristics, if at least one of the following conditions is satisfied The station transmits the predetermined measurement reference signal:

After the first data packet is sent to the receiving station on the first beam group for more than a predetermined number of times, the acknowledgement feedback sent by the receiving station for indicating that the first data packet is received has not been received;

After the first data packet is sent to the receiving station on the first beam group for more than a predetermined time, the acknowledgement feedback sent by the receiving station for indicating that the first data packet is received has not been received.
The apparatus of claim 14, further comprising: a first triggering module configured to send a touch The sending information is used to trigger the receiving station to measure the channel link quality on the second beam group using the predetermined measurement reference signal.
The apparatus according to claim 16, wherein the first triggering module is further configured to trigger the receiving station to use the predetermined measurement reference signal on the second beam group by transmitting the trigger information. The measurement of the quality of the channel link includes at least one of the following:

Sending the first control signaling to the receiving station, where the first control signaling carries the trigger information, where the first control signaling is a control signaling for scheduling the first data packet;

Sending the second control signaling to the receiving station, where the second control signaling carries the trigger information, and the second control signaling includes one of the following: broadcast control signaling, common control signaling ;

After determining that the first data packet is sent to the receiving station on the first beam group by using the antenna having the beam characteristic, sending a third control signaling to the receiving station, where the third control signaling carries The trigger information.
The apparatus of claim 16, wherein the trigger information comprises at least one of:

Instructing information for instructing the transmitting station to start transmitting the predetermined measurement reference signal;

The indication information used to indicate that the first data packet is sent for the first time or is retransmitted for the first time;

Instructing information indicating a maximum round trip delay of one transmission and reception of the first data packet;

And indication information indicating a resource configuration of the measurement reference signal, where a resource configuration of the measurement parameter signal includes at least one of: a frequency resource used by the measurement reference signal, and a used by the measurement reference signal a time resource, a corresponding reference signal sequence of the measurement reference signal;

Instructing information indicating a maximum number of retransmissions of the first data packet;

Instructing information indicating a maximum transmission time limit of the first data packet;

And indication information indicating a number of transmission beam directions included in the second beam group or a included transmission beam;

And indication information for instructing the receiving station to feed back a power boosting level for determining an acknowledgement message for sending the first data packet.
The apparatus according to any one of claims 14 to 18, wherein all or part of the data information in the first data packet is included in the second data packet.
A base station comprising the apparatus of any one of claims 14 to 19.
A data packet receiving apparatus includes:

a second receiving module, configured to use an omnidirectional antenna or an antenna having beam characteristics to attempt to receive the first data packet from the first beam group of the transmitting station;

a third receiving module configured to use an omnidirectional antenna or an antenna having beam characteristics to attempt to receive a predetermined measurement reference signal from a second beam group of the transmitting station, wherein the second beam group includes and the first beam group Beams adjacent and/or identical to one or more beams;

a determining module configured to measure a channel link quality on the second beam group using the predetermined measurement reference signal, determine one or more quality beams in the second beam group, and determine the second One or more high quality beam information in the beam group is fed back to the transmitting station;

And a fourth receiving module, configured to receive the second data packet on the one or more quality beams.
The apparatus according to claim 21, wherein said third receiving module is further configured to attempt to obtain a second beam group from the transmitting station using an omnidirectional antenna or an antenna having beam characteristics, if at least one of the following conditions is satisfied Receiving the predetermined measurement reference signal:

The number of attempts to receive the first data packet from the first beam group of the transmitting station exceeds a predetermined number of times, and the first data packet has not been received;

The first data packet is not received from the first beam group of the transmitting station for more than a predetermined time.
The apparatus of claim 21, further comprising: a second triggering module configured to trigger measurement of a channel link quality on the second beam set using the predetermined measurement reference signal by receiving trigger information.
The apparatus according to claim 23, wherein the second triggering module is further configured to trigger the measurement of the channel link quality on the second beam group by using the predetermined measurement reference signal by receiving trigger information, including the following At least one:

Receiving, by the sending station, the first control signaling, where the first control signaling carries the trigger information, where the first control signaling is a control signaling for scheduling the first data packet. ;

Receiving the second control signaling sent by the sending station, where the second control signaling carries the trigger information, and the second control signaling includes one of the following: broadcast control signaling, public control Signaling

After determining that an omnidirectional antenna or an antenna having beam characteristics attempts to receive the first data packet from the first beam group of the transmitting station, receiving a third control signaling sent by the transmitting station, where The trigger information is carried in the third control signaling.
The apparatus of claim 23, wherein the trigger information comprises at least one of:

Instructing information for instructing the receiving station to start receiving the predetermined measurement reference signal;

The indication information used to indicate that the first data packet is sent for the first time or is retransmitted for the first time;

Instructing information indicating a maximum round trip delay of one transmission and reception of the first data packet;

And indication information indicating a resource configuration of the measurement reference signal, where a resource configuration of the measurement parameter signal includes at least one of: a frequency resource used by the measurement reference signal, and a used by the measurement reference signal a time resource, a corresponding reference signal sequence of the measurement reference signal;

Instructing information indicating a maximum number of retransmissions of the first data packet;

Instructing information indicating a maximum transmission time limit of the first data packet;

And indication information indicating a number of transmission beam directions included in the second beam group or a included transmission beam;

And indication information for instructing the receiving station to feed back a power boosting level for determining an acknowledgement message for sending the first data packet.
The apparatus of claim 21 wherein said determining module comprises:

a measuring unit, configured to sequentially measure, according to the received measurement reference signal, a signaling link quality between each beam in the second beam group of the transmitting station and each beam in a predetermined third beam group of the receiving station according to a predetermined order ;

And a selecting unit, configured to select the one or more quality beams from the second beam group according to a measurement result of a signaling link quality.
The apparatus according to any one of claims 21 to 26, wherein all or part of the data information in the first data packet is included in the second data packet.
A terminal comprising the apparatus of any one of claims 21 to 27.