CN110621035A - Beam failure recovery method, base station and user equipment - Google Patents

Beam failure recovery method, base station and user equipment Download PDF

Info

Publication number
CN110621035A
CN110621035A CN201810638810.8A CN201810638810A CN110621035A CN 110621035 A CN110621035 A CN 110621035A CN 201810638810 A CN201810638810 A CN 201810638810A CN 110621035 A CN110621035 A CN 110621035A
Authority
CN
China
Prior art keywords
failure recovery
beam failure
user equipment
identifier
preamble
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810638810.8A
Other languages
Chinese (zh)
Inventor
王旭
董敏
张月宾
张凯
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Potevio Information Technology Co Ltd
Putian Information Technology Co Ltd
Original Assignee
Putian Information Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Putian Information Technology Co Ltd filed Critical Putian Information Technology Co Ltd
Priority to CN201810638810.8A priority Critical patent/CN110621035A/en
Publication of CN110621035A publication Critical patent/CN110621035A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access, e.g. scheduled or random access
    • H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
    • H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure

Abstract

The embodiment of the invention discloses a beam failure recovery method, a base station and user equipment. Wherein the method comprises the following steps: receiving a beam failure recovery request sent by user equipment through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code; acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier; if the fact that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code is judged and known, a user equipment list corresponding to the received beam failure recovery lead code is obtained; and sending a beam failure recovery response message to the user equipment corresponding to the user equipment list, wherein the beam failure recovery response message carries the physical downlink control channel authorization information scrambled by the cell wireless network temporary identifier. The base station is used for executing the method. The beam failure recovery method, the base station and the user equipment provided by the embodiment of the invention improve the communication efficiency.

Description

Beam failure recovery method, base station and user equipment
Technical Field
The embodiment of the invention relates to the technical field of mobile communication, in particular to a beam failure recovery method, a base station and user equipment.
Background
With the development of wireless communication technology, New Radio (NR) technology is being established, which supports communication based on beam transmission.
In the prior art, random access can be divided into five categories according to different purposes of access: the first type is random access requesting initial access; the second type is the random access of the Radio Resource Control (RRC for short) connection reestablishment process; the third type is random access in the switching process; the fourth type is random access initiated by downlink data when User Equipment (User Equipment, UE for short) is in a radio resource control CONNECTED (RRC CONNECTED) state when the uplink is in an "asynchronous" state; and in the fifth type, when the uplink is in an 'asynchronous' state, the UE is in an RRC CONNECTED state, and uplink data reaches initiated random access. The random access process may be divided into a contention mode random access and a non-contention mode random access, where the contention mode random access is applicable to all of the above five purposes random access, and the non-contention mode is only applicable to the third and fourth types of random access. In the NR system, beam failure recovery is introduced in a random access scenario, but a specific implementation method for beam failure recovery is currently under study.
Therefore, how to provide a beam failure recovery method, which can achieve beam recovery in the NR system to improve communication efficiency, is an important issue to be solved in the industry.
Disclosure of Invention
Aiming at the defects in the prior art, the embodiment of the invention provides a beam failure recovery method, a base station and user equipment.
In a first aspect, an embodiment of the present invention provides a method for recovering a beam failure, including:
receiving a beam failure recovery request sent by user equipment through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code;
acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier;
if the fact that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code is judged, a user equipment list corresponding to the received beam failure recovery lead code is obtained; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
sending a beam failure recovery response message to the user equipment corresponding to the user equipment list, wherein the beam failure recovery response message carries the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
In a second aspect, an embodiment of the present invention further provides a method for recovering a beam failure, including:
transmitting a beam failure recovery request to a base station through a beam, the beam failure recovery request including a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset;
receiving a beam failure recovery response message returned by the base station, wherein the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a pre-configured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
and descrambling the physical downlink control channel according to the cell wireless network temporary identifier so as to recover the communication with the base station.
In a third aspect, the present invention provides a base station, including:
a first receiving unit, configured to receive a beam failure recovery request sent by a user equipment through a beam, where the beam failure recovery request includes a beam failure recovery preamble;
the acquisition unit is used for acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier;
a determining unit, configured to obtain a user equipment list corresponding to the received beam failure recovery preamble after determining that the beam failure recovery preamble corresponding to the beam identifier matches the received beam failure recovery preamble; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
a first sending unit, configured to send a beam failure recovery response message to a user equipment corresponding to the user equipment list, where the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
In a fourth aspect, the present invention provides a user equipment, comprising:
a second transmitting unit, configured to transmit a beam failure recovery request to a base station through a beam, where the beam failure recovery request includes a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset;
a second receiving unit, configured to receive a beam failure recovery response message returned by the base station, where the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a preconfigured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
and the recovery unit is used for descrambling the physical downlink control channel according to the cell radio network temporary identifier so as to recover the communication with the base station.
In a fifth aspect, the present invention provides an electronic device, comprising: a first processor, a first memory, and a first communication bus, wherein:
the first processor and the first memory complete mutual communication through the first communication bus;
the first memory stores program instructions executable by the first processor, the first processor invoking the program instructions to perform a beam failure recovery method comprising:
receiving a beam failure recovery request sent by user equipment through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code;
acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier;
if the fact that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code is judged, a user equipment list corresponding to the received beam failure recovery lead code is obtained; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
sending a beam failure recovery response message to the user equipment corresponding to the user equipment list, wherein the beam failure recovery response message carries the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
In a sixth aspect, the present invention provides a non-transitory computer readable storage medium storing first computer instructions that cause the computer to perform a beam failure recovery method capable of:
receiving a beam failure recovery request sent by user equipment through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code;
acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier;
if the fact that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code is judged, a user equipment list corresponding to the received beam failure recovery lead code is obtained; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
sending a beam failure recovery response message to the user equipment corresponding to the user equipment list, wherein the beam failure recovery response message carries the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
In a seventh aspect, the present invention provides an electronic device, comprising: a second processor, a second memory, and a second communication bus, wherein:
the second processor and the second memory complete mutual communication through the second communication bus;
the second memory stores program instructions executable by the second processor, the second processor invoking the program instructions to perform a beam failure recovery method comprising:
transmitting a beam failure recovery request to a base station through a beam, the beam failure recovery request including a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset;
receiving a beam failure recovery response message returned by the base station, wherein the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a pre-configured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
and descrambling the physical downlink control channel according to the cell wireless network temporary identifier so as to recover the communication with the base station.
In an eighth aspect, the present invention provides a non-transitory computer readable storage medium, wherein the non-transitory computer readable storage medium stores second computer instructions that enable the computer to perform a beam failure recovery method comprising:
transmitting a beam failure recovery request to a base station through a beam, the beam failure recovery request including a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset;
receiving a beam failure recovery response message returned by the base station, wherein the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a pre-configured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
and descrambling the physical downlink control channel according to the cell wireless network temporary identifier so as to recover the communication with the base station.
According to the beam failure recovery method, the base station and the user equipment provided by the embodiment of the invention, the beam failure recovery request including the beam failure recovery lead code sent by the user equipment through the beam can be received, the beam failure recovery lead code corresponding to the beam identifier is obtained in the preset index relation comparison table according to the beam identifier, then the user equipment list corresponding to the received beam failure recovery lead code is obtained after the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code according to judgment, and then the beam failure recovery response message is sent to the user equipment in the user equipment list, so that the communication between the base station and the user equipment can be recovered, and the communication efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a beam failure recovery method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a beam failure recovery method according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a preamble segment according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating the division of preamble sequences according to an embodiment of the present invention;
FIG. 5 is a flowchart illustrating a beam failure recovery method according to another embodiment of the present invention;
FIG. 6 is a flowchart illustrating a beam failure recovery method according to yet another embodiment of the present invention;
FIG. 7 is a diagram illustrating a base station according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a ue according to an embodiment of the present invention;
FIG. 9 is a block diagram of an electronic device according to an embodiment of the present invention;
fig. 10 is a schematic physical structure diagram of an electronic device according to another embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the embodiments of the present invention.
Fig. 1 is a schematic flow diagram of a beam failure recovery method according to an embodiment of the present invention, and as shown in fig. 1, the beam failure recovery method according to the embodiment of the present invention includes:
s101, receiving a beam failure recovery request sent by user equipment through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code;
specifically, in the NR system, when a user equipment completes a random access procedure, the user equipment may enter a radio resource control connected mode for data transmission. If a beam failure occurs, for example, the user equipment moves, encounters congestion or shadowing, the user equipment may determine whether the beam failure occurs by measuring downlink Channel State Information (CSI), for example, if the downlink signal strength measured for multiple consecutive times is lower than a set value, the beam failure is determined to occur. The user equipment may transmit a beam failure recovery request to a base station through a beam, and the base station may receive the beam failure recovery request, which includes a beam failure recovery preamble.
S102, acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier;
specifically, when receiving the beam failure recovery request through the beam, the base station may detect the identifier of the beam, and search, according to the identifier of the beam, a beam failure recovery preamble corresponding to the identifier of the beam in an index relation comparison table. The index relation comparison table is preset and stores the beam identifier and the beam failure recovery preamble corresponding to the beam identifier.
S103, if the fact that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code is judged and obtained, obtaining a user equipment list corresponding to the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
specifically, after finding the beam failure recovery preamble corresponding to the beam identifier, the base station compares the beam failure recovery preamble corresponding to the beam identifier with the received beam failure recovery preamble, and if the beam failure recovery preamble corresponding to the beam identifier matches the received beam failure recovery preamble, obtains a user equipment list corresponding to the received beam failure recovery preamble according to the received beam failure recovery preamble, where the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one, stores the received beam failure recovery preamble and the identifier of the user equipment corresponding to the received beam failure recovery preamble, and the identifier of the user equipment corresponds to the user equipment one to one.
S104, sending a beam failure recovery response message to the user equipment corresponding to the user equipment list, wherein the beam failure recovery response message carries the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
Specifically, after obtaining the user list, the base station may send a beam failure recovery response message to each corresponding user equipment according to the user equipment Identifier included in the user list, where the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a Cell-Radio Network Temporary Identifier (C-RNTI), and the C-RNTIs are in one-to-one correspondence with the user equipment and allocated to the user equipment by the base station in a random access process. And after receiving the beam failure recovery response message, the user equipment descrambles the physical downlink control channel authorization information according to the C-RNTI, so that the wireless resource distributed to the user equipment by the base station can be obtained, and the communication with the base station is recovered.
According to the beam failure recovery method provided by the embodiment of the invention, the beam failure recovery request including the beam failure recovery lead code sent by the user equipment through the beam can be received, the beam failure recovery lead code corresponding to the beam identifier is obtained in the preset index relation comparison table according to the beam identifier, then the user equipment list corresponding to the received beam failure recovery lead code is obtained after the beam failure recovery lead code corresponding to the beam identifier is judged to be matched with the received beam failure recovery lead code, and then the beam failure recovery response message is sent to the user equipment in the user equipment list, so that the communication between the base station and the user equipment can be recovered, and the communication efficiency is improved.
Fig. 2 is a flowchart illustrating a beam failure recovery method according to another embodiment of the present invention, and as shown in fig. 2, before the receiving a beam failure recovery request sent by a user equipment through a beam, the beam failure recovery method according to the embodiment of the present invention further includes:
s201, receiving a random access request sent by the user equipment through the wave beam;
specifically, the user equipment may send a random access request to a base station through the beam, and the base station may receive the random access request.
S202, acquiring a beam failure recovery lead code corresponding to the beam identifier in the index relation comparison table according to the beam identifier, and sending the beam failure recovery lead code corresponding to the beam identifier and the beam identifier to the user equipment;
specifically, the base station may detect and obtain the identifier of the beam when receiving the random access request sent by the user equipment through the beam. And then finding the beam failure recovery lead codes corresponding to the beam identifiers from the index relation comparison table according to the beam identifiers, wherein if a plurality of beam failure recovery lead codes corresponding to the beam identifiers exist, the base station randomly acquires one of the beam failure recovery lead codes. Then, the base station sends a beam failure recovery preamble corresponding to the beam identifier and the beam identifier to the user equipment, and the user equipment receives and stores the received beam failure recovery preamble and the beam identifier, so as to send the beam failure recovery request through the beam when the beam failure recovery request needs to be sent, and carry the received beam failure recovery preamble when the beam failure recovery request is sent.
S203, setting the identifier of the user equipment, and storing the identifier of the user equipment into a user equipment list corresponding to the beam failure recovery lead code corresponding to the identifier of the beam; and the user equipment corresponds to the identification of the user equipment one by one.
Specifically, after acquiring the beam failure recovery preamble corresponding to the beam identifier, the base station sets the identifier of the user equipment, and stores the identifier of the user equipment in the user list, where the user equipment list corresponds to the beam failure recovery preamble corresponding to the beam identifier. And the user equipment corresponds to the identification of the user equipment one to one.
On the basis of the foregoing embodiments, further, the beam failure recovery preamble corresponding to the beam identifier is obtained from a preset preamble segment.
Specifically, the base station has a plurality of preamble segments in advance, and sets a preamble at a preset position in the preamble segments as a beam failure recovery preamble corresponding to the identifier of the beam, and the base station may obtain the beam failure recovery preamble corresponding to the identifier of the beam from the preamble segments.
For example, the base station acquires the last preamble from the preamble section as the beam failure recovery preamble.
On the basis of the foregoing embodiments, further, the preamble section includes M preambles, and the M preambles are divided into four categories, where the first category preamble is a first preset number of preambles sequenced in the preamble section and used for random access in a contention mode, and the second category preamble includes a second preset number of preambles sequenced in the preamble section and used for random access in a contention modeThe lead code is used for random access initiated by non-contention mode downlink data arrival, and the lead code of the third type comprisesThe preambles are used for random access in the non-contention mode handover process, the fourth type of preambles comprises a second preset number of preambles, and the second preset number of preambles is used as beam failure recovery preambles corresponding to the beam identifiers, wherein T is1For the first predetermined number, T2The four classes of preamble codes are not repeated for the second preset number.
Specifically, the preamble section includes M preambles, and the M preambles are classified into four types: the first type of lead codes are the lead codes with a first preset number before the sequencing in the lead code section and are used for random access of a competition modeEntering, that is, the random access request based on the contention mode carries the first preset number of the preambles; the second type of the preamble comprisesThe preamble codes are used for random access initiated by non-contention mode downlink data arrival, and the first type of preamble codes can be removed from the M preamble codes and then the rest M-T preamble codes are removed1Obtaining in the preambleThe preamble is taken as the second type preamble; the third type of preamble comprisesThe preamble is used for random access in the non-contention mode handover procedure and can be selected from the remaining M-T1Removing the second type of preamble from the preamble and removing the remaining preambleObtaining in the preamble The preamble is taken as the preamble of the third type; the fourth type of preambles include a second preset number of preambles, which are used as beam failure recovery preambles corresponding to the beam identifiers, the first type of preambles, the second type of preambles and the third type of preambles are removed from the M preambles, and the remaining preambles are the fourth type of preambles. Wherein, T1For the first predetermined number, T2The second preset number, the first preset number and the second preset number are set according to practical experience, and the embodiment of the invention is not limited.
For example, drawingsFig. 3 is a schematic structural diagram of a preamble section according to an embodiment of the present invention, and as shown in fig. 3, the preamble section includes a first type preamble, a second type preamble, a third type preamble, and a fourth type preamble, the number of preambles included in the preamble section is M, and the number of the first type preambles is T1The number of the second type of lead codes is T3The number of the preamble codes of the third type is T4The number of the lead codes of the fourth type is T2。M＝T1+T2+T3+T4，Wherein, T1Is a first predetermined number, T2Is a second predetermined number. When M is 8, T1＝2，T2When 1, T3＝2，T4＝3。
On the basis of the foregoing embodiments, further, the preamble segments are obtained through a preamble sequence, the preamble sequence includes a third preset number of the preamble segments, and the number of the preambles included in each of the preamble segments is according to a formula Is obtained by calculation, wherein NiRepresents the number of said preambles in the ith said preamble section, Pi＝Pi-1-Ni-1，P-1＝64-W，N-10 ≦ i ≦ N-1, N is the third predetermined number, N is 4 or 8, and W is predetermined.
Specifically, the preamble segments are obtained by a preamble sequence, the preamble sequence includes 64 preambles, the preamble sequence is divided into a third preset number of the preamble segments, and data of the preambles included in each of the preamble segments is obtained according to a formulaIs obtained by calculation, wherein NiRepresents the number of said preambles in the ith said preamble section, Pi＝Pi-1-Ni-1，P-1＝64-W，N-10 ≦ i ≦ N-1, N is the third predetermined number, N is 4 or 8, and W is predetermined. And the remaining W preamble codes in the preamble sequence after the removal of the third preset number of preamble code segments are reserved and can be used for system information requests.
For example, fig. 4 is a schematic diagram illustrating division of a preamble sequence according to an embodiment of the present invention, and as shown in fig. 4, when the number W of preambles of a reserved segment is 1, the preamble sequence is divided into 8 preamble segments, and N is 8, the number of preambles included in each preamble segment is 8, 7, respectively. When W is 1 and N is 4, the preamble sequence is divided into 4 preamble segments, and the number of preambles included in each preamble segment is 16, 15.
On the basis of the foregoing embodiments, further, the determining that the beam failure recovery preamble corresponding to the beam identifier matches the received beam failure recovery preamble includes:
if the number of times of transmission of the beam in a single period is judged to be 8, the matching is that the beam failure recovery lead code corresponding to the beam identifier is the same as the received beam failure recovery lead code;
if the number of times of transmission of the beam in a single period is judged to be 4, the matching is that one of the two beam failure recovery lead codes corresponding to the beam identifier is the same as the received beam failure recovery lead code.
Specifically, the base station may set the number of beams transmitted in a single period and the number of preamble segments corresponding to each of the beams by a configuration parameter ssb-perRACH-occupancy and dcb-preamble PerssB. In this application, it is set that the number of beams transmitted in a single period is 4 or 8, and the beams correspond to the preamble segments one to one, that is, when the number of beams is 8, the preamble sequence is divided into 8 segments, and when the number of beams is 4, the preamble sequence is divided into 4 segments. If the base station configures that the number of times of transmission of the beam in a single period is 8, that is, the number of the beams is 8, the index relationship look-up table may preset one-to-one correspondence between the identifier of the beam and the beam failure recovery preamble included in the preamble segment. And the base station compares the beam failure recovery lead code corresponding to the beam identifier with the received beam failure recovery lead code, and if the beam failure recovery lead code corresponding to the beam identifier is the same as the received beam failure recovery lead code, the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code.
If the base station configures that the number of times of transmission of the beam in a single period is 4, that is, the number of the beams is 4, then the fourth type of preamble included in the preamble section may include at least two preambles, and the at least two preambles are divided into two beam failure recovery preambles, then the identifier of the beam may be preset in the index relation comparison table to correspond to the two beam failure recovery preambles included in the preamble section. And the base station compares the beam failure recovery preamble corresponding to the beam identifier with the received beam failure recovery preamble, and if one of the two beam failure recovery preambles corresponding to the beam identifier is the same as the received beam failure recovery preamble, the beam failure recovery preamble corresponding to the beam identifier is matched with the received beam failure recovery preamble.
On the basis of the foregoing embodiments, further, the sending a beam failure recovery response message to the user equipment corresponding to the user equipment list includes:
sending the beam failure recovery response message to the user equipment corresponding to the user equipment list according to the sequence of the priority of the user equipment from high to low; and the priority of the user equipment is determined according to a preset rule.
Specifically, because the ue communication states corresponding to the ue list are different, the base station may prioritize the ues according to a preset rule, preferentially process the ues with high priorities, and send the beam failure recovery response message to the ues corresponding to the ue list in an order from high priority to low priority.
On the basis of the foregoing embodiments, further, the preset rule includes:
if the error rate of the user equipment in a preset time period is judged and obtained to be larger than a threshold value, the priority of the user equipment is a first priority;
if the user equipment is judged and known not to generate the service in the preset time period, the priority of the user equipment is a second priority;
if the error rate of the user equipment in the preset time period is judged and obtained to be less than or equal to the threshold value, the priority of the user equipment is set as a third priority; wherein the first priority is higher than the second priority, which is higher than the third priority.
Specifically, the base station may count the number of error codes and the scheduling number rate of each user equipment in a preset time period corresponding to the user equipment list, so as to calculate and obtain an error rate of each user equipment in the preset time period, where the error rate is the number of error codes/the scheduling number. The base station compares the error rate of the user equipment with a threshold value, if the error rate of the user equipment is greater than the threshold value, the user equipment belongs to a first priority and is preferentially processed; and if the error rate of the user equipment is less than or equal to the threshold, the user equipment belongs to a third priority and is processed after the user equipment with the first priority and the user equipment with the second priority are processed. The base station may count whether each ue corresponding to the ue list has a service in the preset time period, and if the ue does not have any service in the preset time period, the ue belongs to the second priority, and the ue is processed after the ue with the first priority is processed. Wherein the first priority is higher than the second priority, which is higher than the third priority. The preset time period and the threshold are set according to practical experience, and the embodiment of the invention is not limited.
Fig. 5 is a schematic flow chart of a beam failure recovery method according to another embodiment of the present invention, and as shown in fig. 5, the beam failure recovery method according to the embodiment of the present invention includes:
s501, sending a beam failure recovery request to a base station through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code; wherein the beam failure recovery preamble is pre-stored, and the beam is preset;
specifically, when a beam failure occurs, for example, the user equipment moves, encounters a blockage or a shadowing, the user equipment determines a beam for transmitting a beam failure recovery request through a pre-stored beam identifier, and generates the beam failure recovery request according to a pre-stored beam failure recovery preamble, so as to transmit the beam failure recovery request to the base station through the beam, where the beam failure recovery request includes the beam failure recovery preamble. The base station may receive the beam failure recovery request. The ue may determine whether a beam failure occurs by measuring the downlink CSI, for example, if the downlink signal strength measured for a plurality of consecutive times is lower than a set value, it is determined that the beam failure occurs.
S502, receiving a beam failure recovery response message returned by the base station, wherein the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a pre-configured cell wireless network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
specifically, when receiving the beam failure recovery request through the beam, the base station may detect the identifier of the beam, and search, according to the identifier of the beam, a beam failure recovery preamble corresponding to the identifier of the beam in an index relation comparison table. The index relation comparison table is preset and stores the beam identifier and the beam failure recovery preamble corresponding to the beam identifier. The base station searches a beam failure recovery lead code corresponding to the beam identifier, compares the beam failure recovery lead code corresponding to the beam identifier with the received beam failure recovery lead code, and if the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code, obtains a user equipment list corresponding to the received beam failure recovery lead code according to the received beam failure recovery lead code, wherein the user equipment list is preset and is in one-to-one correspondence with the received beam failure recovery lead code, the received beam failure recovery lead code and the identifier of the user equipment corresponding to the received beam failure recovery lead code are stored, and the identifier of the user equipment is in one-to-one correspondence with the user equipment. After obtaining the user list, the base station may search the user equipment according to the user equipment identifier included in the user list, then return a beam failure recovery response message to the user equipment, and carry, in the beam failure recovery response message, the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier corresponding to the user equipment, where the C-RNTI corresponds to the user equipment in a one-to-one manner and is allocated to the user equipment by the base station in a random access process. The user equipment may receive the beam failure recovery response message.
S503, descrambling the physical downlink control channel according to the cell wireless network temporary identifier to recover the communication with the base station.
Specifically, after receiving the beam failure recovery response message, the ue descrambles the pdcch grant information according to the C-RNTI, so as to obtain the radio resource allocated to the ue by the base station, thereby recovering the communication with the base station.
According to the beam failure recovery method provided by the embodiment of the invention, the beam failure recovery request including the beam failure recovery lead code can be sent through the beam, the beam failure recovery response message which is returned by the base station and carries the physical downlink control channel authorization information scrambled by the pre-configured cell wireless network temporary identifier is received, and then the physical downlink control channel is descrambled according to the cell wireless network temporary identifier, so that the communication with the base station is recovered, and the communication efficiency is improved.
Fig. 6 is a flowchart illustrating a beam failure recovery method according to still another embodiment of the present invention, as shown in fig. 6, on the basis of the foregoing embodiments, further before the sending a beam failure recovery request to a base station through a beam, the method further includes:
s601, sending a random access request to the base station through the wave beam;
specifically, the user equipment may send a random access request to a base station through the beam, and the base station may receive the random access request.
S602, receiving and storing a beam failure recovery lead code corresponding to the beam identifier returned by the base station and the beam identifier; wherein, the one beam failure recovery preamble corresponding to the beam identifier is obtained by the base station in the index relation look-up table according to the beam identifier.
Specifically, the base station may detect and obtain the identifier of the beam when receiving the random access request sent by the user equipment through the beam. And then finding the beam failure recovery lead codes corresponding to the beam identifiers from the index relation comparison table according to the beam identifiers, wherein if a plurality of beam failure recovery lead codes corresponding to the beam identifiers exist, the base station randomly acquires one of the beam failure recovery lead codes. And then the base station sends a beam failure recovery preamble corresponding to the beam identification and the beam identification to the user equipment. The user equipment receives and stores the beam failure recovery preamble and the beam identification returned by the base station.
Fig. 7 is a schematic structural diagram of a base station according to an embodiment of the present invention, and as shown in fig. 7, the base station according to the embodiment of the present invention includes a first receiving unit 701, an obtaining unit 702, a determining unit 703, and a first sending unit 704, where:
the first receiving unit 701 is configured to receive a beam failure recovery request sent by a user equipment through a beam, where the beam failure recovery request includes a beam failure recovery preamble; the obtaining unit 702 is configured to obtain, in a preset index relationship comparison table, a beam failure recovery preamble corresponding to the beam identifier according to the beam identifier; the determining unit 703 is configured to obtain a user equipment list corresponding to the received beam failure recovery preamble after determining that the beam failure recovery preamble corresponding to the beam identifier matches the received beam failure recovery preamble; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one; a first sending unit 704 is configured to send a beam failure recovery response message to the ue corresponding to the ue list, where the beam failure recovery response message carries the pdcch grant information scrambled by the cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
Specifically, in the NR system, when a user equipment completes a random access procedure, the user equipment may enter a radio resource control connected mode for data transmission. If a beam failure occurs, for example, the user equipment moves, encounters a blockage or a shadowing, the user equipment may determine whether the beam failure occurs by measuring the downlink channel state information, for example, the downlink signal strength measured for a plurality of consecutive times is lower than a set value, and then determine that the beam failure occurs. The user equipment may transmit a beam failure recovery request to the base station through a beam, and the first receiving unit 701 may receive the beam failure recovery request, where the beam failure recovery request includes a beam failure recovery preamble.
When receiving the beam failure recovery request through the beam, the obtaining unit 702 may detect the identifier of the beam, and search the beam failure recovery preamble corresponding to the identifier of the beam in the index relation comparison table according to the identifier of the beam. The index relation comparison table is preset and stores the beam identifier and the beam failure recovery preamble corresponding to the beam identifier.
After finding the beam failure recovery preamble corresponding to the beam identifier, the determining unit 703 compares the beam failure recovery preamble corresponding to the beam identifier with the received beam failure recovery preamble, and if the beam failure recovery preamble corresponding to the beam identifier matches the received beam failure recovery preamble, obtains a user equipment list corresponding to the received beam failure recovery preamble according to the received beam failure recovery preamble, where the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one, and stores the received beam failure recovery preamble and the identifier of the user equipment corresponding to the received beam failure recovery preamble, and the identifier of the user equipment corresponds to the user equipment one to one.
After obtaining the user list, the first sending unit 704 may send a beam failure recovery response message to each corresponding user equipment according to the user equipment identifier included in the user list, where the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a C-RNTI, and the C-RNTIs are in one-to-one correspondence with the user equipment and allocated to the user equipment by the base station in a random access process. And after receiving the beam failure recovery response message, the user equipment descrambles the physical downlink control channel authorization information according to the C-RNTI, so that the wireless resource distributed to the user equipment by the base station can be obtained, and the communication with the base station is recovered.
According to the base station provided by the embodiment of the invention, the beam failure recovery request including the beam failure recovery lead code sent by the user equipment through the beam can be received, the beam failure recovery lead code corresponding to the beam identifier is obtained in the preset index relation comparison table according to the beam identifier, then the user equipment list corresponding to the received beam failure recovery lead code is obtained after the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code according to judgment, and then the beam failure recovery response message is sent to the user equipment in the user equipment list, so that the communication between the base station and the user equipment can be recovered, and the communication efficiency is improved.
The embodiment of the base station provided in the embodiment of the present invention may be specifically configured to execute the processing procedure of the corresponding method embodiment, and its functions are not described herein again, and refer to the detailed description of the corresponding method embodiment.
Fig. 8 is a schematic structural diagram of a user equipment according to an embodiment of the present invention, and as shown in fig. 8, the user equipment according to the embodiment of the present invention includes a second sending unit 801, a second receiving unit 802, and a recovering unit 803, where:
the second transmitting unit 801 is configured to transmit a beam failure recovery request to the base station through a beam, where the beam failure recovery request includes a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset; the second receiving unit 802 is configured to receive a beam failure recovery response message returned by the base station, where the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a preconfigured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one; the recovery unit 803 is configured to descramble the physical downlink control channel according to the cell radio network temporary identifier, so as to recover the communication with the base station.
Specifically, when a beam failure occurs, for example, the user equipment moves, encounters congestion, or is shielded, the second transmitting unit 801 determines a beam for transmitting a beam failure recovery request through a pre-stored beam identifier, and generates the beam failure recovery request according to a pre-stored beam failure recovery preamble, so as to transmit the beam failure recovery request to the base station through the beam, where the beam failure recovery request includes the beam failure recovery preamble. The base station may receive the beam failure recovery request. The second transmitting unit 801 may determine whether a beam failure occurs by measuring the downlink CSI, for example, if the downlink signal strength measured for a plurality of consecutive times is lower than a set value, the beam failure is determined.
When receiving the beam failure recovery request through the beam, the base station may detect the identifier of the beam, and search a beam failure recovery preamble corresponding to the identifier of the beam in an index relation comparison table according to the identifier of the beam. The index relation comparison table is preset and stores the beam identifier and the beam failure recovery preamble corresponding to the beam identifier. The base station searches a beam failure recovery lead code corresponding to the beam identifier, compares the beam failure recovery lead code corresponding to the beam identifier with the received beam failure recovery lead code, and if the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code, obtains a user equipment list corresponding to the received beam failure recovery lead code according to the received beam failure recovery lead code, wherein the user equipment list is preset and is in one-to-one correspondence with the received beam failure recovery lead code, the received beam failure recovery lead code and the identifier of the user equipment corresponding to the received beam failure recovery lead code are stored, and the identifier of the user equipment is in one-to-one correspondence with the user equipment. After obtaining the user list, the base station may search the user equipment according to the user equipment identifier included in the user list, then return a beam failure recovery response message to the user equipment, and carry, in the beam failure recovery response message, the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier corresponding to the user equipment, where the C-RNTI corresponds to the user equipment in a one-to-one manner and is allocated to the user equipment by the base station in a random access process. The second receiving unit 802 may receive the beam failure recovery response message.
After receiving the beam failure recovery response message, the recovery unit 803 descrambles the physical downlink control channel grant information according to the C-RNTI, so as to obtain the radio resource allocated by the base station to the user equipment, thereby recovering the communication with the base station.
According to the user equipment provided by the embodiment of the invention, the beam failure recovery request comprising the beam failure recovery lead code beam can be sent through the beam, the beam failure recovery response message which is returned by the base station and carries the physical downlink control channel authorization information scrambled by the pre-configured cell wireless network temporary identifier is received, and then the physical downlink control channel is descrambled according to the cell wireless network temporary identifier, so that the communication with the base station is recovered, and the communication efficiency is improved.
The embodiment of the user equipment provided in the embodiment of the present invention may be specifically configured to execute the processing flow of the corresponding method embodiment, and its functions are not described herein again, and refer to the detailed description of the corresponding method embodiment.
Fig. 9 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 9, the electronic device includes a first processor (processor)901, a first memory (memory)902, and a first communication bus 903;
the first processor 901 and the first memory 902 complete communication with each other through a first communication bus 903;
the first processor 901 is configured to call program instructions in the first memory 902 to perform a method, for example, comprising: receiving a beam failure recovery request sent by user equipment through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code; acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier; if the fact that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code is judged, a user equipment list corresponding to the received beam failure recovery lead code is obtained; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one; sending a beam failure recovery response message to the user equipment corresponding to the user equipment list, wherein the beam failure recovery response message carries the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
The present embodiments disclose a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, the computer is capable of performing a method, for example comprising: receiving a beam failure recovery request sent by user equipment through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code; acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier; if the fact that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code is judged, a user equipment list corresponding to the received beam failure recovery lead code is obtained; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one; sending a beam failure recovery response message to the user equipment corresponding to the user equipment list, wherein the beam failure recovery response message carries the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
The present embodiments provide a non-transitory computer readable storage medium storing first computer instructions that cause a computer to perform a method, for example, comprising: receiving a beam failure recovery request sent by user equipment through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code; acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier; if the fact that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code is judged, a user equipment list corresponding to the received beam failure recovery lead code is obtained; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one; sending a beam failure recovery response message to the user equipment corresponding to the user equipment list, wherein the beam failure recovery response message carries the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
Fig. 10 is a schematic physical structure diagram of an electronic device according to another embodiment of the present invention, as shown in fig. 10, the electronic device includes a second processor (processor)1001, a second memory (memory)1002, and a second communication bus 1003;
the second processor 1001 and the second memory 1002 complete communication with each other through a second communication bus 1003;
the second processor 1001 is configured to call program instructions in the second memory 1002 to perform a method, for example, comprising: transmitting a beam failure recovery request to a base station through a beam, the beam failure recovery request including a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset; receiving a beam failure recovery response message returned by the base station, wherein the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a pre-configured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one; and descrambling the physical downlink control channel according to the cell wireless network temporary identifier so as to recover the communication with the base station.
The present embodiments disclose a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions which, when executed by a computer, the computer is capable of performing a method, for example comprising: transmitting a beam failure recovery request to a base station through a beam, the beam failure recovery request including a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset; receiving a beam failure recovery response message returned by the base station, wherein the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a pre-configured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one; and descrambling the physical downlink control channel according to the cell wireless network temporary identifier so as to recover the communication with the base station.
The present embodiments provide a non-transitory computer readable storage medium storing second computer instructions that cause the computer to perform a method, for example, comprising: transmitting a beam failure recovery request to a base station through a beam, the beam failure recovery request including a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset; receiving a beam failure recovery response message returned by the base station, wherein the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a pre-configured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one; and descrambling the physical downlink control channel according to the cell wireless network temporary identifier so as to recover the communication with the base station.
In addition, the logic instructions in the memory may be implemented in the form of software functional units and may be stored in a computer readable storage medium when sold or used as a stand-alone product. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer (which may be a personal computer, an apparatus, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (16)

1. A method for beam failure recovery, comprising:
receiving a beam failure recovery request sent by user equipment through a beam, wherein the beam failure recovery request comprises a beam failure recovery lead code;
acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier;
if the fact that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code is judged, a user equipment list corresponding to the received beam failure recovery lead code is obtained; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
sending a beam failure recovery response message to the user equipment corresponding to the user equipment list, wherein the beam failure recovery response message carries the physical downlink control channel authorization information scrambled by the cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
2. The method of claim 1, wherein before the receiving the beam failure recovery request sent by the user equipment through the beam, further comprising:
receiving a random access request sent by the user equipment through the wave beam;
acquiring a beam failure recovery lead code corresponding to the beam identifier in the index relation comparison table according to the beam identifier, and issuing the beam failure recovery lead code corresponding to the beam identifier and the beam identifier to the user equipment;
setting an identifier of the user equipment, and storing the identifier of the user equipment into a user equipment list corresponding to the beam failure recovery preamble corresponding to the identifier of the beam; and the user equipment corresponds to the identification of the user equipment one by one.
3. The method of claim 1, wherein the beam failure recovery preamble corresponding to the identity of the beam is obtained from a preset preamble segment.
4. The method of claim 3, wherein the preamble section comprises M preambles, and the M preambles are divided into four classes, wherein the first class of preambles is a first preset number of preambles in the preamble section for random access in contention mode, and the second class of preambles comprises a first preset number of preambles in the preamble section for random access in contention modeThe lead code is used for random access initiated by non-contention mode downlink data arrival, and the lead code of the third type comprisesThe preambles are used for random access in the non-contention mode handover process, the fourth type of preambles comprises a second preset number of preambles, and the second preset number of preambles is used as beam failure recovery preambles corresponding to the beam identifiers, wherein T is1For the first predetermined number, T2The four classes of preamble codes are not repeated for the second preset number.
5. The method of claim 3, wherein the preamble segments are obtained from a preamble sequence, the preamble sequence comprising a third preset number of the preamble segments, and wherein the number of preambles included in each of the preamble segments is determined according to a formulaIs obtained by calculation, wherein NiRepresents the number of said preambles in the ith said preamble section, Pi＝Pi-1-Ni-1，P-1＝64-W，N-10 ≦ i ≦ N-1, N is the third predetermined number, N is 4 or 8, and W is predetermined.
6. The method of claim 1, wherein the determining that the beam failure recovery preamble corresponding to the beam id matches the received beam failure recovery preamble comprises:
if the number of times of transmission of the beam in a single period is judged to be 8, the matching is that the beam failure recovery lead code corresponding to the beam identifier is the same as the received beam failure recovery lead code;
if the number of times of transmission of the beam in a single period is judged to be 4, the matching is that one of the two beam failure recovery lead codes corresponding to the beam identifier is the same as the received beam failure recovery lead code.
7. The method according to any one of claims 1 to 6, wherein the sending the beam failure recovery response message to the user equipment corresponding to the user equipment list comprises:
sending the beam failure recovery response message to the user equipment corresponding to the user equipment list according to the sequence of the priority of the user equipment from high to low; and the priority of the user equipment is determined according to a preset rule.
8. The method of claim 7, wherein the preset rules comprise:
if the error rate of the user equipment in a preset time period is judged and obtained to be larger than a threshold value, the priority of the user equipment is a first priority;
if the user equipment is judged and known not to generate the service in the preset time period, the priority of the user equipment is a second priority;
if the error rate of the user equipment in the preset time period is judged and obtained to be less than or equal to the threshold value, the priority of the user equipment is a third priority; wherein the first priority is higher than the second priority, which is higher than the third priority.
9. A method for beam failure recovery, comprising:
transmitting a beam failure recovery request to a base station through a beam, the beam failure recovery request including a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset;
receiving a beam failure recovery response message returned by the base station, wherein the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a pre-configured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
and descrambling the physical downlink control channel according to the cell wireless network temporary identifier so as to recover the communication with the base station.
10. The method of claim 9, wherein before the sending the beam failure recovery request to the base station via the beam, further comprising:
transmitting a random access request to the base station through the beam;
receiving and storing a beam failure recovery preamble corresponding to the beam identifier and the beam identifier returned by the base station; wherein, the one beam failure recovery preamble corresponding to the beam identifier is obtained by the base station in the index relation look-up table according to the beam identifier.
11. A base station, comprising:
a first receiving unit, configured to receive a beam failure recovery request sent by a user equipment through a beam, where the beam failure recovery request includes a beam failure recovery preamble;
the acquisition unit is used for acquiring a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier;
a determining unit, configured to obtain a user equipment list corresponding to the received beam failure recovery preamble after determining that the beam failure recovery preamble corresponding to the beam identifier matches the received beam failure recovery preamble; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
a first sending unit, configured to send a beam failure recovery response message to a user equipment corresponding to the user equipment list, where the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a cell radio network temporary identifier; and the cell radio network temporary identifier corresponds to the user equipment one by one.
12. A user device, comprising:
a second transmitting unit, configured to transmit a beam failure recovery request to a base station through a beam, where the beam failure recovery request includes a beam failure recovery preamble; wherein the beam failure recovery preamble is pre-stored, and the beam is preset;
a second receiving unit, configured to receive a beam failure recovery response message returned by the base station, where the beam failure recovery response message carries physical downlink control channel authorization information scrambled by a preconfigured cell radio network temporary identifier; the beam failure recovery response message is sent after the base station acquires a beam failure recovery lead code corresponding to the beam identifier in a preset index relation comparison table according to the beam identifier, and acquires a user equipment list corresponding to the received beam failure recovery lead code after judging that the beam failure recovery lead code corresponding to the beam identifier is matched with the received beam failure recovery lead code; wherein the user equipment list is preset and corresponds to the received beam failure recovery preamble one to one;
and the recovery unit is used for descrambling the physical downlink control channel according to the cell radio network temporary identifier so as to recover the communication with the base station.
13. An electronic device, comprising: a first processor, a first memory, and a first communication bus, wherein:
the first processor and the first memory complete mutual communication through the first communication bus;
the first memory stores program instructions executable by the first processor, the first processor invoking the program instructions to perform the method of any of claims 1 to 8.
14. A non-transitory computer-readable storage medium storing first computer instructions that cause a computer to perform the method of any one of claims 1 to 8.
15. An electronic device, comprising: a second processor, a second memory, and a second communication bus, wherein:
the second processor and the second memory complete mutual communication through the second communication bus;
the second memory stores program instructions executable by the second processor, the second processor invoking the program instructions to perform the method of claim 9 or 10.
16. A non-transitory computer-readable storage medium storing second computer instructions that cause the computer to perform the method of claim 9 or 10.
CN201810638810.8A 2018-06-20 2018-06-20 Beam failure recovery method, base station and user equipment Pending CN110621035A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810638810.8A CN110621035A (en) 2018-06-20 2018-06-20 Beam failure recovery method, base station and user equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810638810.8A CN110621035A (en) 2018-06-20 2018-06-20 Beam failure recovery method, base station and user equipment

Publications (1)

Publication Number Publication Date
CN110621035A true CN110621035A (en) 2019-12-27

Family

ID=68920782

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810638810.8A Pending CN110621035A (en) 2018-06-20 2018-06-20 Beam failure recovery method, base station and user equipment

Country Status (1)

Country Link
CN (1) CN110621035A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114364049A (en) * 2020-10-12 2022-04-15 维沃移动通信有限公司 Method and device for generating leader sequence and terminal

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107223361A (en) * 2017-05-05 2017-09-29 北京小米移动软件有限公司 Control method, user equipment and the base station of Network with Random Multiple Access System
CN107948987A (en) * 2016-10-13 2018-04-20 华为技术有限公司 Communication means, apparatus and system
WO2018082685A1 (en) * 2016-11-04 2018-05-11 华为技术有限公司 Random access method, network equipment and user equipment

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107948987A (en) * 2016-10-13 2018-04-20 华为技术有限公司 Communication means, apparatus and system
WO2018082685A1 (en) * 2016-11-04 2018-05-11 华为技术有限公司 Random access method, network equipment and user equipment
CN107223361A (en) * 2017-05-05 2017-09-29 北京小米移动软件有限公司 Control method, user equipment and the base station of Network with Random Multiple Access System

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114364049A (en) * 2020-10-12 2022-04-15 维沃移动通信有限公司 Method and device for generating leader sequence and terminal
WO2022078281A1 (en) * 2020-10-12 2022-04-21 维沃移动通信有限公司 Method and apparatus for generating preamble sequence, and terminal

Similar Documents

Publication Publication Date Title
EP3316651B1 (en) Random access method and corresponding device
CN109495222B (en) RA-RNTI (radio Access network temporary identity) determination method and device
EP3755087B1 (en) Beam failure recovery method and user terminal
EP3606266B1 (en) Method and device for random access and instruction after random access rollback
US10362545B2 (en) Method, user equipment and base station for transmitting uplink signals
CN106797569B (en) Method and apparatus for performing transmission
CN108289337A (en) Method and user equipment, the base station equipment of uplink scheduling request
EP3007511A1 (en) Method for random access and user equipment
EP3193556A1 (en) Access method and apparatus for user equipment
CN111294752A (en) V2X transmission candidate resource determination method and device, storage medium and user equipment
EP3016467A1 (en) Data transmission method, device and system
CN107690172B (en) Access method and device in wireless network
US20180124803A1 (en) Resource Allocation Method, UE, and Base Station
CN109152042B (en) Preamble configuration and identification method, base station, terminal and readable storage medium
EP3046365A1 (en) Communication access method and user equipment
CN109673057B (en) Random access method and device under asymmetric uplink carrier aggregation
CN115316033A (en) Apparatus, method and computer program
US20220256608A1 (en) Contention based random access procedure for mobile communications
CN108617004B (en) Method and device for transmitting data in RRC (radio resource control) connection state
US9924497B2 (en) Method for transmitting signal in device-to-device proximity service, base station, and user equipment
CN111586879A (en) Random access method and device
CN110621035A (en) Beam failure recovery method, base station and user equipment
CN109964529B (en) Method and device for performing a random access procedure between a user equipment UE and a radio access network of a telecommunication network
CN111107661B (en) Random access resource acquisition method and device
CN111418254A (en) Data transmission method and device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
AD01 Patent right deemed abandoned

Effective date of abandoning: 20230707

AD01 Patent right deemed abandoned