CN108924929B - Beam recovery method, base station and user terminal - Google Patents
Beam recovery method, base station and user terminal Download PDFInfo
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- CN108924929B CN108924929B CN201710175205.7A CN201710175205A CN108924929B CN 108924929 B CN108924929 B CN 108924929B CN 201710175205 A CN201710175205 A CN 201710175205A CN 108924929 B CN108924929 B CN 108924929B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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Abstract
A beam recovery method, a base station and a user terminal are provided, wherein the beam recovery method comprises the following steps: transmitting a resource set of beam recovery request signals to a user terminal; selecting a resource of a corresponding beam recovery request signal from the resource set of the beam recovery request signal according to the received state information of the user terminal; transmitting the identification information of the resource of the selected beam recovery request signal to the user terminal; enabling the user terminal to select a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal according to the identification information, and transmitting the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information; and receiving a beam recovery request signal sent by the user terminal to perform beam recovery. The scheme can reduce the resource overhead in the beam recovery process.
Description
Technical Field
The embodiment of the invention relates to the field of wireless communication, in particular to a beam recovery method, a base station and a user terminal.
Background
When a User Equipment (UE) communicates with a base station, there are factors such as channel fluctuation, communication link blockage, and UE rotation, which cause a communication beam between the base station and the UE to be misaligned, thereby affecting the performance of a wireless communication system. After the beam communication between the base station and the UE is misaligned, if no special processing is adopted, the wireless link between the base station and the UE is disconnected, and then the process goes to layer 3(L3), that is, the base station and the UE reestablish a connection, which results in a long communication delay.
In the prior art, UE initialization is supported for beam recovery. Beam recovery aims at re-establishing the beam communication link between the UE and the base station. When the UE measures and estimates that the base station cannot perform Beam communication with the UE, the UE sends a Beam Recovery Request Signal (Beam Recovery Request Signal) to the base station, so that the base station performs reestablishment of a Beam communication link.
In the prior art, a base station configures resources of beam recovery request signals for a user terminal through a downlink control signaling. However, the above beam recovery method has a large resource overhead.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is how to reduce the resource overhead in the beam recovery process.
To solve the foregoing technical problem, an embodiment of the present invention provides a beam recovery method, including: transmitting a resource set of beam recovery request signals to a user terminal; the set of resources of beam recovery request signals comprises resources of at least one beam recovery request signal; selecting a resource of a corresponding beam recovery request signal from the resource set of the beam recovery request signal according to the received state information of the user terminal; transmitting the identification information of the resource of the selected beam recovery request signal to the user terminal; enabling the user terminal to select a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal according to the identification information, and transmitting the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information; and receiving a beam recovery request signal sent by the user terminal to perform beam recovery.
Optionally, the sending the resource set of the beam-forming recovery request signal to the user terminal includes: and transmitting the resource set of the beam recovery request signal to the user terminal through a wireless resource control signaling.
Optionally, the radio resource control signaling includes any one of: user terminal dedicated radio resource control signaling, common radio resource control signaling.
Optionally, the status information of the ue includes any one of: the service state information of the user terminal and the prior information of the user terminal.
Optionally, the service state information of the user terminal includes at least one of the following: and the user terminal reports the frequency of the beam recovery request signal and the current service load of the user terminal.
Optionally, when there is another user equipment with the same prior information as the user equipment, the selecting a resource of the corresponding beam recovery request signal further includes: and selecting a resource of the beam recovery request signal according to the prior information, wherein the resource of the beam recovery request signal is used as the resource of the beam recovery request signal corresponding to the user terminal with the same prior information.
Optionally, the prior information corresponding to the user terminal includes: and the spatial characteristic information corresponding to the user terminal.
Optionally, the spatial characteristic information corresponding to the user terminal includes at least one of the following: the position information of the user terminal and the last reported beam information of the user terminal.
Optionally, the identifier information of the resource that transmits the selected beam recovery request signal to the user terminal includes any one of: transmitting the identification information of the resource of the selected wave beam recovery request signal to the user terminal through a downlink control signaling; and transmitting the identification information of the resource of the selected beam recovery request signal to the user terminal through a control element of a medium access control layer.
Optionally, the beam recovery method further includes: dividing and storing the resource set of the beam recovery request signal according to the following preset conditions; the preset condition comprises at least one of the following conditions: the time frequency resource size occupied by the user terminal for transmitting the beam recovery request signal, the period of the user terminal for transmitting the beam recovery request signal, the sequence used by the beam recovery request signal transmitted by the user and the coding mode used by the beam recovery request signal transmitted by the user.
The embodiment of the invention also provides another beam recovery method, which comprises the following steps: receiving a resource set of a beam recovery request signal issued by a base station; the resources of the beam recovery request signal include resources of at least one beam recovery request signal; receiving the identification information of the resource of the beam recovery request signal issued by the base station; the resource of the beam recovery request signal is selected from a preset resource set of the beam recovery request signal by the base station according to the state information of the user terminal; according to the identification information, selecting the resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal; and transmitting the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information, so that the base station performs beam recovery.
Optionally, the receiving a resource set of the beam recovery request signal sent by the base station includes: and receiving a radio resource control signaling sent by the base station, and acquiring a resource set of the beam recovery request signal from the radio resource control signaling.
Optionally, the method includes receiving a radio resource control signaling sent by the base station, and acquiring a resource set of the beam recovery request signal from the radio resource control signaling.
Optionally, the status information of the ue includes any one of: the service state information of the user terminal and the prior information of the user terminal.
Optionally, the service state information of the user terminal includes at least one of the following: the frequency of the reported beam recovery request signal of the user terminal and the current service load of the user terminal.
Optionally, the prior information of the ue includes: and the spatial characteristic information corresponding to the user.
Optionally, the spatial characteristic information corresponding to the user terminal includes at least one of the following: the position information of the user terminal and the last reported beam information of the user terminal.
Optionally, the receiving the identification information of the resource of the beam recovery request signal sent by the base station includes any one of the following: receiving a downlink control signaling sent by the base station, and acquiring identification information of the resource of the beam recovery request signal from the downlink control signaling; and acquiring the identification information of the resource of the beam recovery request signal through a control element of a medium access control layer.
Optionally, after the transmitting the beam recovery request signal, the method further includes: acquiring the resource of the beam recovery request signal corresponding to the identification information, and transmitting the beam recovery request signal for times; and when the times of transmitting the beam recovery request signals are greater than the preset times, stopping transmitting the beam recovery request signals by adopting the resources of the beam recovery request signals corresponding to the identification information, and reestablishing data connection with the base station.
An embodiment of the present invention provides a base station, including: a first sending unit, configured to send a resource set of beam recovery request signals to a user terminal; the set of resources of beam recovery request signals comprises resources of at least one beam recovery request signal; a first selecting unit, configured to select, according to the received state information of the ue, a resource of a corresponding beam recovery request signal from the resource set of the beam recovery request signal; a second sending unit, configured to send identification information of a resource of the selected beam recovery request signal to the user terminal; enabling the user terminal to select a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal according to the identification information, and transmitting the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information; a first receiving unit, configured to receive a beam recovery request signal sent by the user terminal; and the execution unit is used for performing beam recovery.
Optionally, the first sending unit is configured to send a resource set of a beam recovery request signal to the user equipment through a radio resource control signaling.
Optionally, the radio resource control signaling includes any one of: user terminal dedicated radio resource control signaling, common radio resource control signaling.
Optionally, the status information of the ue includes any one of: the service state information of the user terminal and the prior information of the user terminal.
Optionally, the service state information of the user terminal includes at least one of the following: and the user terminal reports the frequency of the beam recovery request signal and the current service load of the user terminal.
Optionally, the first selecting unit is further configured to, when there is another user terminal having the same prior information as the user terminal, select a resource of a beam recovery request signal according to the prior information, as a resource of a beam recovery request signal corresponding to the user terminal having the same prior information.
Optionally, the prior information corresponding to the user terminal includes: and the spatial characteristic information corresponding to the user terminal.
Optionally, the spatial characteristic information corresponding to the user terminal includes at least one of the following: the position information of the user terminal and the last reported beam information of the user terminal.
Optionally, the second sending unit is configured to issue the identification information of the resource of the selected beam recovery request signal to the user terminal in any one of the following manners: transmitting the identification information of the resource of the selected wave beam recovery request signal to the user terminal through a downlink control signaling; and transmitting the identification information of the resource of the selected beam recovery request signal to the user terminal through a control element of a medium access control layer.
Optionally, the base station further includes: a dividing unit, configured to divide and store the resource set of the beam recovery request signal according to the following preset conditions; the preset condition comprises at least one of the following conditions: the time frequency resource size occupied by the user terminal for transmitting the beam recovery request signal, the period of the user terminal for transmitting the beam recovery request signal, the sequence used by the beam recovery request signal transmitted by the user and the coding mode used by the beam recovery request signal transmitted by the user.
An embodiment of the present invention further provides a user terminal, including: a second receiving unit, configured to receive a resource set of a beam recovery request signal sent by a base station; the resources of the beam recovery request signal include resources of at least one beam recovery request signal; a third receiving unit, configured to receive identifier information of a resource of a beam recovery request signal sent by a base station; the resource of the beam recovery request signal is selected from a preset resource set of the beam recovery request signal by the base station according to the state information of the user terminal; a second selecting unit, configured to select, according to the identification information, a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal; a transmission unit, configured to transmit the beam recovery request signal by using the resource of the beam recovery request signal corresponding to the identification information, so that the base station performs beam recovery.
Optionally, the second receiving unit is configured to receive a radio resource control signaling sent by the base station, and obtain the resource set of the beam recovery request signal from the radio resource control signaling.
Optionally, the radio resource control signaling includes any one of: user terminal dedicated radio resource control signaling, common radio resource control signaling.
Optionally, the status information of the ue includes any one of: the service state information of the user terminal and the prior information of the user terminal.
Optionally, the service state information of the user terminal includes at least one of the following: the frequency of the reported beam recovery request signal of the user terminal and the current service load of the user terminal.
Optionally, the prior information of the ue includes: and the spatial characteristic information corresponding to the user.
Optionally, the spatial characteristic information corresponding to the user terminal includes at least one of the following: the position information of the user terminal and the last reported beam information of the user terminal.
Optionally, the third receiving unit is configured to receive the identifier information of the resource of the beam recovery request signal issued by the base station by using any one of the following manners: receiving a downlink control signaling sent by the base station, and acquiring identification information of the resource of the beam recovery request signal from the downlink control signaling; and acquiring the identification information of the resource of the beam recovery request signal through a control element of a medium access control layer.
Optionally, the user terminal further includes: an obtaining unit, configured to obtain a resource of the beam recovery request signal corresponding to the identification information, and perform the number of times of transmission of the beam recovery request signal; and the control unit is used for stopping the transmission of the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information when the frequency of transmitting the beam recovery request signal is greater than the preset frequency, and reestablishing data connection with the base station.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the resource set of the beam recovery request signal is configured for the user terminal in advance, and is issued to the user terminal. And transmitting the identification information of the resource of the corresponding beam recovery request signal to the user terminal according to the state information of the user terminal. After receiving the identification information of the resource of the beam recovery request signal, the user terminal may select a resource of a corresponding beam recovery request signal from the resource set of the beam recovery request signal, and transmit the beam recovery request signal. When the resource of the beam recovery request signal is indicated for the user terminal, only the identification information of the resource of the beam recovery request signal needs to be sent to the user terminal, so that the resource overhead can be reduced.
Further, the resource of the beam recovery request signal is selected according to the prior information of the user terminal. When the prior information of a plurality of user terminals is the same, only the resource of one beam recovery request signal needs to be selected and sent to the plurality of user terminals with the same prior information, and the resource of one beam recovery request signal does not need to be selected for each user terminal, so that the plurality of user terminals with the same prior information can share the resource of the same beam recovery request signal, and the resource overhead can be reduced.
Further, the base station selects the resources of the corresponding beam recovery request signals according to the service state information reported by the user terminal, and the resources of the selected beam recovery request signals can be different for the user terminals with different service state information, so that the user terminal can be dynamically instructed to select the resources of different beam recovery request signals, and the flexibility of selecting the resources of the beam recovery request signals is improved.
Furthermore, according to the service state information reported by the user terminal, the resource more suitable for the beam recovery request signal interrupted by the user can be selected, and the success rate of the beam recovery request signal transmission is improved.
In addition, when the user terminal transmits the beam recovery request signal by using the resource of the beam recovery request signal corresponding to the identification information, the user terminal may acquire the number of times of transmitting the beam recovery request signal. When the number of times of transmitting the beam recovery request signal is greater than the preset number of times, the user terminal may terminate the transmission of the beam recovery request signal and reestablish a data connection with the base station, thereby avoiding a situation that the user terminal cannot communicate with the base station for a long time.
Drawings
Fig. 1 is a flowchart of a beam recovery request method in an embodiment of the present invention;
fig. 2 is a flow chart of another beam recovery request method in an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a base station in an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a user terminal in an embodiment of the present invention.
Detailed Description
In the prior art, UE initialization is supported for beam recovery. Beam recovery aims at re-establishing the beam communication link between the UE and the base station. And when the UE measures and estimates that the base station cannot perform beam communication with the UE, the UE sends a beam recovery request signal to the base station so that the base station performs reestablishment of a beam communication link. In the prior art, a base station configures resources of beam recovery request signals for a user terminal through a downlink control signaling. However, in the beam recovery method, the base station is required to transmit all contents of the resource of the beam recovery request signal configured for the user terminal in the linear control signaling, including the coding mode and the sequence used by the resource of the beam recovery request signal, so that the resource overhead of the base station is large.
In the embodiment of the invention, when the resource of the beam recovery request signal is indicated for the user terminal, only the identification information of the resource of the beam recovery request signal needs to be transmitted to the user terminal, so that the resource overhead can be reduced.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
An embodiment of the present invention provides a beam recovery method, which is described in detail below with reference to fig. 1 through specific steps.
Step S101, transmitting the resource set of the beam recovery request signal to the user terminal.
In a specific implementation, the base station may generate a resource set of beam recovery request signals in advance, where the resource set of beam recovery request signals includes resources of at least one beam recovery request signal. After generating the resource set of the beam recovery request signal, the base station may issue the generated resource set of the beam recovery request signal to the user terminal.
In a specific implementation, the base station may send a Resource set of the beam-resuming request signal to the ue through Radio Resource Control (RRC) signaling. The RRC signaling may be UE specific RRC signaling or common RRC signaling.
In practical application, the base station may decide by itself whether to issue the resource set of the beam-recovery request signal to the user terminal through the user terminal radio resource control signaling or to issue the resource set of the beam-recovery request signal to the user terminal through the common radio resource control signaling.
It can be understood that, in a specific implementation, the base station may also send a resource set of the beam recovery request signal to the user terminal through other signaling, which is not described herein again.
In a specific implementation, after generating the resource set of the beam recovery request signal, the base station may further divide and store the resource set of the beam recovery request signal according to a preset condition. In an embodiment of the present invention, the preset condition may include at least one of: the time frequency resource occupied by the user terminal for transmitting the beam recovery request signal, the period of the user terminal for transmitting the beam recovery request signal, the sequence used by the beam recovery request signal transmitted by the user and the coding mode used by the beam recovery request signal transmitted by the user.
For example, for the user terminal 1, the time domain Resource size occupied by the transmission beam recovery request signal is 6 Physical Resource Blocks (PRB); for the user terminal 2, the time domain resource occupied by the transmission beam recovery request signal is 8 PRBs, so that the resources of the beam recovery request signal whose occupied time-frequency resource is 6 PRBs can be classified into one class in the resource set of the beam recovery request signal, and the resources of the beam recovery request signal whose occupied time-frequency resource is 8 PRBs can be classified into one class.
That is, the resource set of the beam recovery request signal received by the user terminal may be a resource set of the beam recovery request signal that has been divided by the base station in advance according to a preset condition.
In a specific implementation, when the resource set of the beam recovery request signal includes resources of a plurality of beam recovery request signals, and the base station does not divide the resource set of the beam recovery request signal according to a preset condition, the base station may number the resource of each beam recovery request signal in the resource set to distinguish the resources of different beam recovery request signals. The number corresponding to the resource of each beam recovery request signal may be used as identification information corresponding to the resource of the beam recovery request signal.
For example, the resource set of the beam recovery request signal includes resources of 9 beam recovery request signals, and the numbers of the resources of the 9 beam recovery request signals are 1 to 9 in sequence.
Step S102, according to the received state information of the user terminal, selecting the resource of the corresponding beam recovery request signal from the resource set of the beam recovery request signal.
In a specific implementation, the status information of the ue may include any one of the following: service state information of the user terminal, and prior information of the user terminal.
In a specific implementation, the base station may receive the service state information reported by the user terminal. The service state information reported by the user terminal may include the frequency of reporting the beam recovery request signal by the user terminal, the current service load of the user terminal, and the frequency of reporting the beam recovery request signal by the user terminal and the current service load of the user terminal.
It can be understood that the service state information reported by the user terminal may further include other information, which is not described herein again.
After receiving the service state information reported by the user, the base station can select the resource of the beam recovery request signal corresponding to the service state information reported by the user terminal from the pre-generated resource set of the beam recovery request signal.
The base station selects the resources of the corresponding beam recovery request signals according to the service state information reported by the user terminal, and the resources of the selected beam recovery request signals can be different for the user terminals with different service state information, so that the user terminal can be dynamically instructed to select the resources of different beam recovery request signals, and the flexibility of selecting the resources of the beam recovery request signals is improved.
In specific implementation, the base station may obtain prior information corresponding to the user terminal in advance, and the prior information corresponding to the user terminal may include spatial characteristic information corresponding to the user terminal. In a specific implementation, the spatial characteristic information corresponding to the ue may include location information of the ue, beam information last reported by the ue, and also include location information of the ue and beam information last reported by the ue.
It can be understood that, in practical applications, the spatial characteristic information of the ue may further include other information, which is not described herein.
In practical applications, the base station may obtain the location information of the ue in advance. For example, the base station acquires the location information of the user terminal by triangulation. The base station may acquire the location information Of the ue by a Time Difference Of Arrival (TDOA) or Direction Of Arrival (DOA) method. The base station may also record the beam information reported by each ue before.
In a specific implementation, when the prior information of a plurality of user terminals is the same, and the base station selects a resource of the beam recovery request signal, the same beam recovery request signal may be configured for the user terminals with the same prior information. That is, the base station may select a resource of a beam recovery request signal from a resource set of beam recovery request signals according to the prior information of the base station, as a resource of a beam recovery request signal corresponding to a user terminal with the same prior information.
For example, if the prior information corresponding to the user terminals 1-4 is the same, the base station first selects the beam recovery request signal resource 1 according to the prior information of the user terminal 1. Aiming at the user terminals 2-4, the base station does not need to reselect the resource of the beam recovery request signal according to the prior information of the user terminals 2-4, but directly configures the beam recovery request signal resource 1 for the user terminals 2-4.
It can be seen that the resources of the beam recovery request signal are selected according to the a priori information of the user terminal. When the prior information of a plurality of user terminals is the same, only the resource of one beam recovery request signal needs to be selected and sent to the plurality of user terminals with the same prior information, and the resource of one beam recovery request signal does not need to be selected for each user terminal, so that the plurality of user terminals with the same prior information can share the resource of the same beam recovery request signal, and the resource overhead can be reduced.
In an embodiment of the present invention, when the geographic locations of the plurality of ues are close, the base station may determine that the plurality of ues have the same spatial characteristics. In another embodiment of the present invention, when the beam information reported by the plurality of ues before is the same, the base station may determine that the plurality of ues have the same spatial characteristics. In another embodiment of the present invention, when the geographic locations of the plurality of ues are close to each other and the beam information reported by the plurality of ues before is the same, the base station may determine that the plurality of ues have the same spatial characteristics.
Step S103, sending the identification information of the resource of the selected wave beam recovery request signal to the user terminal.
In a specific implementation, after selecting the resource of the corresponding beam recovery request signal according to the service state information reported by the user terminal, the base station does not directly issue the resource of the selected beam recovery request signal to the user terminal, but issues the identification information of the resource of the selected beam recovery request signal to the user terminal.
In a specific implementation, the base station may send the identification Information of the resource of the selected beam recovery request signal to the user terminal through Downlink Control Information (DCI), or the base station may send the identification Information of the resource of the selected beam recovery request signal to the user terminal through a Control Element (CE) of a Media Access Control (MAC) layer.
It can be understood that the base station may also use other manners to issue the identification information of the resource of the selected beam recovery request signal to the user terminal, which is not described herein again.
After receiving the identification information of the resource of the beam recovery request signal issued by the base station, the user terminal may select the resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal according to the identification information of the resource of the beam recovery request signal. After selecting the resource of the beam recovery request signal corresponding to the identification information, the user terminal may transmit the beam recovery request signal through the selected resource of the beam recovery request signal corresponding to the identification information.
For example, the resource of the beam recovery request signal selected by the base station according to the service state information reported by the user terminal is as follows: beam recovery request signal resource 1. And then, the base station issues DCI to the user terminal, wherein the DCI carries the identification information '1'. After receiving the DCI, the user terminal acquires identification information "1" from the DCI, and finds a beam recovery request signal resource 1 corresponding to the identification information "1" from among the resources of the beam recovery request signal received in advance. And the user terminal adopts the beam recovery request signal resource 1 to transmit the beam recovery request signal.
Step S104, receiving the beam recovery request signal sent by the user terminal, and performing beam recovery.
In specific implementation, after receiving a beam recovery request signal sent by a user terminal by using a beam recovery request signal resource, the base station may perform a beam recovery operation, so that a communication beam of the user terminal is aligned with a communication beam of the base station, thereby implementing normal communication between the user terminal and the base station.
Therefore, the resource set of the beam recovery request signal is configured for the user terminal in advance, and is issued to the user terminal. And transmitting the identification information of the resource of the corresponding beam recovery request signal to the user terminal according to the state information of the user terminal. After receiving the identification information of the resource of the beam recovery request signal, the user terminal may select a resource of a corresponding beam recovery request signal from the resource set of the beam recovery request signal, and transmit the beam recovery request signal. When the resource of the beam recovery request signal is indicated for the user terminal, only the identification information of the resource of the beam recovery request signal needs to be sent to the user terminal, so that the resource overhead of the base station can be reduced.
The embodiment of the present invention further provides another beam recovery method, which is described in detail below with reference to fig. 2 through specific steps.
Step S201, a resource set of a beam recovery request signal issued by a base station is received.
In a specific implementation, the base station may generate a resource set of beam recovery request signals in advance, where the resource set of beam recovery request signals includes resources of at least one beam recovery request signal. After generating the resource set of the beam recovery request signal, the base station may issue the generated resource set of the beam recovery request signal to the user terminal.
In a specific implementation, the base station may send a resource set of the beam recovery request signal to the user terminal through RRC signaling. After receiving the RRC signaling sent by the base station, the user terminal may obtain a resource set of the beam recovery request signal configured in advance by the base station from the RRC signaling.
In a specific implementation, the RRC signaling may be user equipment dedicated radio resource control (UE specific RRC) signaling or common RRC signaling.
Step S202, receiving the identification information of the resource of the beam recovery request signal issued by the base station.
In a specific implementation, the base station may select a resource of the corresponding beam recovery request signal from a preset resource set of the beam recovery request signal according to the state information of the user terminal, and send identification information of the resource of the selected beam recovery request signal to the user terminal.
In a specific implementation, the state information of the ue may be service state information of the ue, or may also be prior information of the ue.
The following describes in detail a process in which the base station selects resources of the beam recovery request signal.
In a specific implementation, the ue may report its service status information to the base station. In the service state information, the frequency of reporting the beam recovery request signal by the user terminal may be included, the current service load of the user terminal may also be included, and the frequency of reporting the beam recovery request signal by the user terminal and the current service load of the user terminal may also be included at the same time.
It can be understood that the service state information reported by the user terminal may further include other information, which is not described herein again.
In a specific implementation, after receiving the service state information reported by the user, the base station may select a resource of the beam recovery request signal corresponding to the service state information reported by the user terminal from a pre-generated resource set of the beam recovery request signal. And the base station transmits the identification information of the resource of the selected beam recovery request signal to the user terminal.
In specific implementation, the base station may obtain prior information corresponding to the user terminal in advance, and the prior information corresponding to the user terminal may include spatial characteristic information corresponding to the user terminal. In a specific implementation, the spatial characteristic information corresponding to the ue may include location information of the ue, beam information last reported by the ue, and also include location information of the ue and beam information last reported by the ue.
It can be understood that, in practical applications, the spatial characteristic information of the ue may further include other information, which is not described herein.
In practical applications, the base station may obtain the location information of the ue in advance. For example, the base station acquires the location information of the user terminal by triangulation. The base station may acquire the location information Of the ue by a Time Difference Of Arrival (TDOA) or Direction Of Arrival (DOA) method. The base station may also record the beam information reported by each ue before.
In a specific implementation, when the prior information of a plurality of user terminals is the same, and the base station selects a resource of the beam recovery request signal, the same beam recovery request signal may be configured for the user terminals with the same prior information. That is, the base station may select a resource of a beam recovery request signal from a resource set of beam recovery request signals according to the prior information of the base station, as a resource of a beam recovery request signal corresponding to a user terminal with the same prior information.
For example, if the prior information corresponding to the user terminals 1-4 is the same, the base station first selects the beam recovery request signal resource 1 according to the prior information of the user terminal 1. Aiming at the user terminals 2-4, the base station does not need to reselect the resource of the beam recovery request signal according to the prior information of the user terminals 2-4, but directly configures the beam recovery request signal resource 1 for the user terminals 2-4.
In a specific implementation, the base station may send the identification information of the resource of the selected beam recovery request signal to the user terminal through the DCI, or the base station may send the identification information of the resource of the selected beam recovery request signal to the user terminal through the MAC CE.
Accordingly, the user terminal may receive the DCI, from which identification information of the resource of the beam recovery request signal is acquired. The user terminal may also receive the MAC CE, and obtain the identification information of the resource of the beam recovery request signal therefrom.
It can be understood that the base station may also use other manners to issue the identification information of the resource of the selected beam recovery request signal to the user terminal, which is not described herein again.
Step S203, according to the identification information, selecting a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal.
In a specific implementation, after receiving the identification information of the resource of the beam recovery request signal issued by the base station, the user terminal may select, according to the identification information of the resource of the beam recovery request signal, the resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal.
For example, the resource of the beam recovery request signal selected by the base station according to the service state information reported by the user terminal is as follows: beam recovery request signal resource 1. And then, the base station issues DCI to the user terminal, wherein the DCI carries the identification information '1'. After receiving the DCI, the user terminal acquires identification information "1" from the DCI, and finds a beam recovery request signal resource 1 corresponding to the identification information "1" from among the resources of the beam recovery request signal received in advance.
Step S204, adopting the resource of the beam recovery request signal corresponding to the identification information to transmit the beam recovery request signal.
In a specific implementation, after selecting the resource of the beam recovery request signal corresponding to the identification information, the ue may transmit the beam recovery request signal through the selected resource of the beam recovery request signal corresponding to the identification information.
After receiving the beam recovery request signal sent by the user terminal by using the beam recovery request signal resource, the base station can perform beam recovery operation, so that the communication beam of the user terminal is aligned with the communication beam of the base station, and normal communication between the user terminal and the base station is realized.
In practical applications, when the user terminal transmits the beam recovery request signal, the transmission of the beam recovery request signal may fail. When the transmission fails, the ue retransmits the beam recovery request signal in the next period. If the number of times of transmission failure of the beam recovery request signal is large, the user terminal may not be able to communicate with the base station for a long time.
In the embodiment of the present invention, when the user terminal transmits the beam recovery request signal by using the resource of the beam recovery request signal corresponding to the identification information, the user terminal may obtain the number of times of transmitting the beam recovery request signal. When the number of times of transmitting the beam recovery request signal is greater than the preset number of times, the user terminal may terminate the transmission of the beam recovery request signal and reestablish a data connection with the base station, thereby avoiding a situation that the user terminal cannot communicate with the base station for a long time.
In specific implementation, the preset times can be set according to actual application scenarios and application requirements. For example, the preset number of times is set to 5 times.
In practical applications, when the number of times of performing the beam recovery request signal transmission is greater than the preset number of times, the user terminal may terminate performing the beam recovery request signal transmission, and go to layer 3(L3) for processing, so as to re-establish a data connection with the base station.
Referring to fig. 3, an embodiment of the present invention provides a base station 30, including: a first sending unit 301, a first selecting unit 302, a second sending unit 303, a first receiving unit 304, and an executing unit 305, wherein:
a first sending unit 301, configured to send a resource set of beam recovery request signals to a user terminal; the set of resources of beam recovery request signals comprises resources of at least one beam recovery request signal;
a first selecting unit 302, configured to select, according to the received state information of the ue, a resource of a corresponding beam recovery request signal from the resource set of the beam recovery request signal;
a second sending unit 303, configured to send identification information of a resource of the selected beam recovery request signal to the user terminal; enabling the user terminal to select a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal according to the identification information, and transmitting the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information;
a first receiving unit 304, configured to receive a beam recovery request signal sent by the user terminal;
an executing unit 305, configured to perform beam recovery.
In a specific implementation, the first sending unit 301 may be configured to send a resource set of a beam-recovery request signal to the ue through a radio resource control signaling.
In a specific implementation, the radio resource control signaling may include any one of: user terminal dedicated radio resource control signaling, common radio resource control signaling.
In a specific implementation, the state information of the ue includes any one of: the service state information of the user terminal and the prior information of the user terminal.
In a specific implementation, the service status information of the ue may include at least one of the following: and the user terminal reports the frequency of the beam recovery request signal and the current service load of the user terminal.
In a specific implementation, when there are other user terminals having the same prior information as the user terminal, the first selecting unit 302 may be further configured to select a resource of a beam recovery request signal according to the prior information, as a resource of a beam recovery request signal corresponding to the user terminal having the same prior information.
In a specific implementation, the prior information corresponding to the ue may include: and the spatial characteristic information corresponding to the user terminal.
In a specific implementation, the spatial characteristic information corresponding to the ue may include at least one of the following: the position information of the user terminal and the last reported beam information of the user terminal.
In a specific implementation, the second sending unit 303 may be configured to issue the identification information of the resource of the selected beam recovery request signal to the user terminal in any one of the following manners: transmitting the identification information of the resource of the selected wave beam recovery request signal to the user terminal through a downlink control signaling; and transmitting the identification information of the resource of the selected beam recovery request signal to the user terminal through a control element of a medium access control layer.
In a specific implementation, the base station may further include: a dividing unit (not shown in fig. 3) configured to divide and store the resource set of the beam recovery request signal according to the following preset conditions; the preset condition comprises at least one of the following conditions: the time frequency resource size occupied by the user terminal for transmitting the beam recovery request signal, the period of the user terminal for transmitting the beam recovery request signal, the sequence used by the beam recovery request signal transmitted by the user and the coding mode used by the beam recovery request signal transmitted by the user.
Referring to fig. 4, an embodiment of the present invention provides a user terminal 40, including: a second receiving unit 401, a third receiving unit 402, a second selecting unit 403, and a transmitting unit 404, wherein:
a second receiving unit 401, configured to receive a resource set of a beam recovery request signal sent by a base station; the resources of the beam recovery request signal include resources of at least one beam recovery request signal;
a third receiving unit 402, configured to receive identifier information of a resource of a beam recovery request signal sent by a base station; the resource of the beam recovery request signal is selected by the base station from a preset resource set of the beam recovery request signal according to the service state information;
a second selecting unit 403, configured to select, according to the identification information, a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal;
a transmitting unit 404, configured to transmit the beam recovery request signal by using the resource of the beam recovery request signal corresponding to the identification information, so that the base station performs beam recovery.
In a specific implementation, the second receiving unit 401 may be configured to receive a radio resource control signaling sent by the base station, and acquire a resource set of the beam recovery request signal from the radio resource control signaling.
In a specific implementation, the radio resource control signaling may include any one of: user terminal dedicated radio resource control signaling, common radio resource control signaling.
In a specific implementation, the state information of the ue may include any one of the following: the service state information of the user terminal and the prior information of the user terminal.
In a specific implementation, the service state information of the ue includes at least one of the following: the frequency of the reported beam recovery request signal of the user terminal and the current service load of the user terminal.
In a specific implementation, the prior information of the ue may include: and the spatial characteristic information corresponding to the user.
In a specific implementation, the spatial characteristic information corresponding to the ue includes at least one of the following: the position information of the user terminal and the last reported beam information of the user terminal.
In a specific implementation, the third receiving unit 402 may be configured to receive the identification information of the resource of the beam recovery request signal issued by the base station by using any one of the following manners: receiving a downlink control signaling sent by the base station, and acquiring identification information of the resource of the beam recovery request signal from the downlink control signaling; and acquiring the identification information of the resource of the beam recovery request signal through a control element of a medium access control layer.
In the specific implementation, in order to avoid a situation that the user terminal cannot establish a communication connection with the base station for a long time due to failure of repeatedly retransmitting the beam recovery request signal, in an embodiment of the present invention, the user terminal may further include: an obtaining unit (not shown in fig. 4) configured to obtain a resource of a beam recovery request signal corresponding to the identification information, and perform the number of times of beam recovery request signal transmission; a control unit (not shown in fig. 4), configured to terminate the transmission of the beam recovery request signal performed by using the resource of the beam recovery request signal corresponding to the identification information when the number of times of performing the beam recovery request signal transmission is greater than a preset number of times, and reestablish a data connection with the base station.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable storage medium, and the storage medium may include: ROM, RAM, magnetic or optical disks, and the like.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (38)
1. A method of beam recovery, comprising:
transmitting a resource set of beam recovery request signals to a user terminal; the set of resources of beam recovery request signals comprises resources of at least one beam recovery request signal;
selecting a resource of a corresponding beam recovery request signal from the resource set of the beam recovery request signal according to the received state information of the user terminal;
transmitting the identification information of the resource of the selected beam recovery request signal to the user terminal; enabling the user terminal to select a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal according to the identification information, and transmitting the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information;
and receiving a beam recovery request signal sent by the user terminal to perform beam recovery.
2. The beam recovery method of claim 1, wherein the transmitting the set of resources of the beam recovery request signal to the user terminal comprises:
and transmitting the resource set of the beam recovery request signal to the user terminal through a wireless resource control signaling.
3. The beam recovery method of claim 2 wherein the radio resource control signaling comprises any of: user terminal dedicated radio resource control signaling, common radio resource control signaling.
4. The beam recovery method of claim 1, wherein the state information of the user terminal comprises any one of:
the service state information of the user terminal and the prior information of the user terminal.
5. The beam recovery method of claim 4 wherein the traffic state information of the user terminal comprises at least one of:
and the user terminal reports the frequency of the beam recovery request signal and the current service load of the user terminal.
6. The beam recovery method of claim 4, wherein when there are other user terminals having the same a priori information corresponding to the user terminal, the selecting the resource of the corresponding beam recovery request signal further comprises:
and selecting a resource of the beam recovery request signal according to the prior information, wherein the resource of the beam recovery request signal is used as the resource of the beam recovery request signal corresponding to the user terminal with the same prior information.
7. The beam recovery method of claim 4, wherein the a priori information corresponding to the user terminal comprises: and the spatial characteristic information corresponding to the user terminal.
8. The beam recovery method of claim 7, wherein the spatial characteristic information corresponding to the ue comprises at least one of: the position information of the user terminal and the last reported beam information of the user terminal.
9. The beam recovery method of claim 1, wherein the identification information of the resource that transmits the selected beam recovery request signal to the user terminal comprises any one of:
transmitting the identification information of the resource of the selected wave beam recovery request signal to the user terminal through a downlink control signaling;
and transmitting the identification information of the resource of the selected beam recovery request signal to the user terminal through a control element of a medium access control layer.
10. The beam recovery method of claim 1, further comprising: dividing and storing the resource set of the beam recovery request signal according to the following preset conditions; the preset condition comprises at least one of the following conditions: the time frequency resource size occupied by the user terminal for transmitting the beam recovery request signal, the period of the user terminal for transmitting the beam recovery request signal, the sequence used by the beam recovery request signal transmitted by the user and the coding mode used by the beam recovery request signal transmitted by the user.
11. A method of beam recovery, comprising:
receiving a resource set of a beam recovery request signal issued by a base station; the resources of the beam recovery request signal include resources of at least one beam recovery request signal;
receiving the identification information of the resource of the beam recovery request signal issued by the base station; the resource of the beam recovery request signal is selected from a preset resource set of the beam recovery request signal by the base station according to the state information of the user terminal;
according to the identification information, selecting the resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal;
and transmitting the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information, so that the base station performs beam recovery.
12. The beam recovery method of claim 11, wherein the receiving the resource set of the beam recovery request signal transmitted by the base station comprises:
and receiving a radio resource control signaling sent by the base station, and acquiring a resource set of the beam recovery request signal from the radio resource control signaling.
13. The beam recovery method of claim 12 wherein the radio resource control signaling comprises any of: user terminal dedicated radio resource control signaling, common radio resource control signaling.
14. The beam recovery method of claim 11 wherein the state information of the user terminal comprises any one of: the service state information of the user terminal and the prior information of the user terminal.
15. The beam recovery method of claim 14, wherein the traffic state information of the user terminal comprises at least one of: the frequency of the reported beam recovery request signal of the user terminal and the current service load of the user terminal.
16. The beam recovery method of claim 14, wherein the a priori information of the user terminal comprises: and the spatial characteristic information corresponding to the user.
17. The beam recovery method of claim 16, wherein the spatial characteristic information corresponding to the ue comprises at least one of: the position information of the user terminal and the last reported beam information of the user terminal.
18. The beam recovery method of claim 11, wherein the identification information of the resource of the beam recovery request signal transmitted by the receiving base station includes any one of:
receiving a downlink control signaling sent by the base station, and acquiring identification information of the resource of the beam recovery request signal from the downlink control signaling;
and acquiring the identification information of the resource of the beam recovery request signal through a control element of a medium access control layer.
19. The beam recovery method of claim 11, further comprising, after performing beam recovery request signal transmission:
acquiring the resource of the beam recovery request signal corresponding to the identification information, and transmitting the beam recovery request signal for times;
and when the times of transmitting the beam recovery request signals are greater than the preset times, stopping transmitting the beam recovery request signals by adopting the resources of the beam recovery request signals corresponding to the identification information, and reestablishing data connection with the base station.
20. A base station, comprising:
a first sending unit, configured to send a resource set of beam recovery request signals to a user terminal; the set of resources of beam recovery request signals comprises resources of at least one beam recovery request signal;
a first selecting unit, configured to select, according to the received state information of the ue, a resource of a corresponding beam recovery request signal from the resource set of the beam recovery request signal;
a second sending unit, configured to send identification information of a resource of the selected beam recovery request signal to the user terminal; enabling the user terminal to select a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal according to the identification information, and transmitting the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information;
a first receiving unit, configured to receive a beam recovery request signal sent by the user terminal;
and the execution unit is used for performing beam recovery.
21. The base station of claim 20, wherein the first sending unit is configured to send a resource set of beam-recovery request signals to the ue through radio resource control signaling.
22. The base station of claim 21, wherein the radio resource control signaling comprises any of: user terminal dedicated radio resource control signaling, common radio resource control signaling.
23. The base station of claim 20, wherein the status information of the user terminal comprises any one of: the service state information of the user terminal and the prior information of the user terminal.
24. The base station of claim 23, wherein the traffic status information of the user terminal comprises at least one of: and the user terminal reports the frequency of the beam recovery request signal and the current service load of the user terminal.
25. The base station of claim 23, wherein the first selecting unit is further configured to select, when there are other user terminals with the same prior information as the user terminal, a resource of a beam recovery request signal according to the prior information, as the resource of the beam recovery request signal corresponding to the user terminal with the same prior information.
26. The base station of claim 23, wherein the a priori information corresponding to the ue comprises: and the spatial characteristic information corresponding to the user terminal.
27. The base station of claim 26, wherein the spatial characteristic information corresponding to the ue comprises at least one of: the position information of the user terminal and the last reported beam information of the user terminal.
28. The base station of claim 20, wherein the second sending unit is configured to send the identification information of the resource of the selected beam recovery request signal to the ue in any one of the following manners:
transmitting the identification information of the resource of the selected wave beam recovery request signal to the user terminal through a downlink control signaling;
and transmitting the identification information of the resource of the selected beam recovery request signal to the user terminal through a control element of a medium access control layer.
29. The base station of claim 20, further comprising: a dividing unit, configured to divide and store the resource set of the beam recovery request signal according to the following preset conditions; the preset condition comprises at least one of the following conditions: the time frequency resource size occupied by the user terminal for transmitting the beam recovery request signal, the period of the user terminal for transmitting the beam recovery request signal, the sequence used by the beam recovery request signal transmitted by the user and the coding mode used by the beam recovery request signal transmitted by the user.
30. A user terminal, comprising:
a second receiving unit, configured to receive a resource set of a beam recovery request signal sent by a base station; the resources of the beam recovery request signal include resources of at least one beam recovery request signal;
a third receiving unit, configured to receive identifier information of a resource of a beam recovery request signal sent by a base station; the resource of the beam recovery request signal is selected from a preset resource set of the beam recovery request signal by the base station according to the state information of the user terminal;
a second selecting unit, configured to select, according to the identification information, a resource of the beam recovery request signal corresponding to the identification information from the resource set of the beam recovery request signal;
a transmission unit, configured to transmit the beam recovery request signal by using the resource of the beam recovery request signal corresponding to the identification information, so that the base station performs beam recovery.
31. The ue of claim 30, wherein the second receiving unit is configured to receive a radio resource control signaling sent by the base station, and obtain the resource set of the beam recovery request signal from the radio resource control signaling.
32. The user terminal of claim 31, wherein the radio resource control signaling comprises any of: user terminal dedicated radio resource control signaling, common radio resource control signaling.
33. The user terminal of claim 30, wherein the status information of the user terminal comprises any one of: the service state information of the user terminal and the prior information of the user terminal.
34. The user terminal of claim 33, wherein the service state information of the user terminal comprises at least one of: the frequency of the reported beam recovery request signal of the user terminal and the current service load of the user terminal.
35. The ue of claim 33, wherein the a priori information of the ue comprises: and the spatial characteristic information corresponding to the user.
36. The ue of claim 35, wherein the spatial characteristic information corresponding to the ue comprises at least one of: the position information of the user terminal and the last reported beam information of the user terminal.
37. The ue of claim 30, wherein the third receiving unit is configured to receive the identifier information of the resource of the beam recovery request signal sent by the base station by using any one of the following manners: receiving a downlink control signaling sent by the base station, and acquiring identification information of the resource of the beam recovery request signal from the downlink control signaling;
and acquiring the identification information of the resource of the beam recovery request signal through a control element of a medium access control layer.
38. The user terminal of claim 30, further comprising:
an obtaining unit, configured to obtain a resource of the beam recovery request signal corresponding to the identification information, and perform the number of times of transmission of the beam recovery request signal;
and the control unit is used for stopping the transmission of the beam recovery request signal by adopting the resource of the beam recovery request signal corresponding to the identification information when the frequency of transmitting the beam recovery request signal is greater than the preset frequency, and reestablishing data connection with the base station.
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| CN110536419B (en) * | 2018-05-23 | 2023-04-18 | 中兴通讯股份有限公司 | Beam recovery method and device |
| CN111385890B (en) * | 2018-12-29 | 2023-05-02 | 成都华为技术有限公司 | Beam failure recovery method and device |
| CN111615118B (en) * | 2019-04-30 | 2022-06-07 | 维沃移动通信有限公司 | Beam recovery method and device |
| WO2021007864A1 (en) * | 2019-07-18 | 2021-01-21 | Oppo广东移动通信有限公司 | Information reporting method and apparatus, terminal and network device |
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