CN110099458B - Random access method, network side equipment and user terminal - Google Patents
Random access method, network side equipment and user terminal Download PDFInfo
- Publication number
- CN110099458B CN110099458B CN201810089009.2A CN201810089009A CN110099458B CN 110099458 B CN110099458 B CN 110099458B CN 201810089009 A CN201810089009 A CN 201810089009A CN 110099458 B CN110099458 B CN 110099458B
- Authority
- CN
- China
- Prior art keywords
- user terminal
- network side
- preamble
- timer
- random access
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/008—Transmission of channel access control information with additional processing of random access related information at receiving side
-
- 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 invention provides a random access method, network side equipment and a user terminal, and belongs to the technical field of wireless. The random access method is applied to network side equipment and comprises the following steps: the network side equipment appoints msg1 to the user terminal to send a specific preamble which is needed to be sent by the user terminal in the process; and/or the network side equipment informs the user terminal of the information of a timer for timing the preamble sending interval of the two times. The random access method is applied to a user terminal and comprises the following steps: the user terminal receives a specific preamble which is sent last in a msg1 sending process and is appointed by network side equipment; and/or the user terminal receives the information of the timer which is sent by the network side equipment and used for timing the preamble interval sent twice. The technical scheme of the invention can ensure that the network side equipment can accurately judge whether the UE has sent all lead codes in the random access process.
Description
Technical Field
The present invention relates to the field of wireless technologies, and in particular, to a random access method, a network side device, and a user terminal.
Background
In the existing 3GPP (3rd Generation Partnership Project) protocol, RAN (Radio Access Network) 2 determines that a UE (User Equipment) can transmit a plurality of different preambles in a non-contention Random process, before the UE transmits the preambles, a base station side can bind the preambles to different downlink beams, and by sensing which preambles are transmitted by the UE, the base station side can know which downlink beams can provide sufficient gain for the UE It is known which uplink beam the UE should select for subsequent RACH (Random Access Channel) and packet transmission.
Assuming that the base station allocates N (N is an integer greater than 1) preambles to the UE for msg1(message 1) transmission in the non-contention random procedure through proprietary signaling, and the UE selects only N (N < N) preambles from the N preambles for transmission, which happens to be unsatisfactory (not exceeding the threshold) for the N msg1 energies, the base station cannot determine whether the UE has transmitted all the preambles that the UE wants to transmit without additional information. It is emphasized that when the base station knows that the UE has finished sending all the preambles it wants to send, the base station should immediately start the process of replying to the RAR and select the ID of the preamble containing the best received energy in the RAR.
However, according to the existing mechanism of LTE (Long Term Evolution), it is impossible for the base station to know when the UE finishes transmitting all the preambles that the UE wants to transmit.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a random access method, a network side device and a user terminal, which can enable the network side device to accurately determine whether all preambles have been sent by a UE in a random access process.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
in one aspect, a random access method is provided, which is applied to a network side device, and includes:
the network side equipment appoints msg1 to the user terminal to send a specific random access preamble which is needed to be sent by the user terminal in the process; and/or the network side equipment informs the user terminal of the information of a timer for timing the preamble sending interval of the two times.
Further, the air conditioner is provided with a fan,
the network side device appointing the specific preamble which is sent finally in the msg1 sending process to the user terminal, and the method comprises the following steps:
the network side equipment appoints the specific preamble to the user terminal through a radio resource control Reconfiguration signaling RRC _ Reconfiguration; or
The information that the network side device informs the user terminal of a timer for timing the preamble sending interval of the two times comprises:
and the network side equipment appoints the duration of the timer to the user terminal through radio resource control Connection reconfiguration signaling or system information.
Further, the air conditioner is provided with a fan,
after the network side device assigns the msg1 to the user terminal to send the specific preamble sent last in the process, the method further includes:
after receiving the specific preamble, the network side device judges that the user terminal ends the msg1 sending process, and the network side device replies a Random Access Response (RAR) to the user terminal.
Further, the air conditioner is provided with a fan,
after the network side device notifies the user terminal of information of a timer for timing a preamble interval sent twice, the method further includes:
the network side equipment starts the timer after receiving a preamble, and if the network side equipment does not receive the next preamble after the timer is overtime, the network side equipment judges that the user terminal ends the msg1 sending process, and the network side equipment replies RAR to the user terminal.
The embodiment of the invention also provides a random access method, which is applied to the user terminal and comprises the following steps:
the user terminal receives a specific random access preamble sent last in a msg1 sending process appointed by network side equipment; and/or the user terminal receives the information of the timer which is sent by the network side equipment and used for timing the preamble interval sent twice.
Further, the air conditioner is provided with a fan,
after the user terminal receives the specific preamble sent last in the msg1 sending process specified by the network side device, the method further includes:
and before ending the msg1 sending process, the user terminal sends the specific preamble to the network side equipment.
Further, the air conditioner is provided with a fan,
after the ue receives the information of the timer for timing the preamble interval sent by the network side device for two times, the method further includes:
before ending the msg1 sending process, after the user terminal sends a preamble to the network side device, before the timer is overtime, the user terminal sends the next preamble to the network side device.
The embodiment of the invention also provides a network side device, which comprises a processor and a transceiver,
the transceiver is used for appointing msg1 to the user terminal to send a specific random access preamble which is needed to be sent by the user terminal in the process; and/or informing the user terminal of the information of a timer for timing the preamble interval sent twice.
Further, the air conditioner is provided with a fan,
the transceiver is specifically configured to specify the specific preamble to the ue through RRC _ Reconfiguration signaling; or
The transceiver is specifically configured to assign a duration of the timer to the ue through RRC Connection reconfiguration signaling or a system message.
Further, the air conditioner is provided with a fan,
the processor is further configured to determine that the user terminal ends the msg1 sending process after the transceiver receives the specific preamble;
the transceiver is further configured to reply a random access response, RAR, to the user terminal.
Further, the air conditioner is provided with a fan,
the processor is further configured to start the timer after the transceiver receives a preamble, and if the transceiver does not receive a next preamble after the timer expires, determine that the user terminal ends the msg1 sending process;
the transceiver is further configured to reply to the RAR to the user terminal.
The embodiment of the invention also provides a user terminal, which comprises a processor and a transceiver,
the transceiver is used for receiving a specific random access preamble sent last in a msg1 sending process specified by network side equipment; and/or receiving information of a timer which is sent by the network side equipment and used for timing a preamble interval sent twice.
Further, the air conditioner is provided with a fan,
the transceiver is further configured to send the specific preamble to the network side device before ending the msg1 sending process.
Further, the air conditioner is provided with a fan,
the transceiver is further configured to send a next preamble to the network side device before the timer expires after sending a preamble to the network side device before ending the msg1 sending process.
The embodiment of the invention also provides network side equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; the processor, when executing the program, implements the random access method as described above.
The embodiment of the invention also provides a user terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; the processor, when executing the program, implements the random access method as described above.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the random access method as described above.
The embodiment of the invention has the following beneficial effects:
in the above scheme, the network side device designates msg1 to send the specific random access preamble sent last in the process to the user terminal; or the network side device informs the user terminal of the information of the timer for timing the preamble interval sent twice before and after, so that after the network side device receives the specific preamble or the timer is overtime, the network side device can judge that the user terminal ends the msg1 sending process, and the network side device replies an RAR to the user terminal. By the technical scheme of the invention, the network side equipment can accurately judge whether the UE has sent all the lead codes in the random access process. Under the condition of multiple uplink beams, the time for waiting for the UE to send the msg1 can be effectively reduced, and random access can be performed more quickly.
Drawings
Fig. 1 is a flowchart illustrating a random access method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating a random access method according to another embodiment of the present invention;
fig. 3 is a flowchart illustrating a random access method according to another embodiment of the present invention;
fig. 4 is a flowchart illustrating a random access method according to still another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a user terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
Embodiments of the present invention provide a random access method, a network side device, and a user terminal, which enable the network side device to accurately determine whether all preambles have been sent by a UE in a random access process.
An embodiment of the present invention provides a random access method, which is applied to a network side device, as shown in fig. 1, and includes:
step 101: the network side equipment appoints msg1 to the user terminal to send the specific random access preamble which is needed to be sent by the user terminal in the process.
The msg1 refers to a first message sent to a network side device during a random access process of a user terminal.
And/or as shown in fig. 2, comprising:
step 201: and the network side equipment informs the user terminal of the information of a timer for timing the interval between the sending of the preamble twice.
In this embodiment, the network side device designates msg1 to send a specific random access preamble sent last in the process to the user terminal; or the network side device informs the user terminal of the information of the timer for timing the preamble interval sent twice before and after, so that after the network side device receives the specific preamble or the timer is overtime, the network side device can judge that the user terminal ends the msg1 sending process, and the network side device replies an RAR to the user terminal. By the technical scheme of the invention, the network side equipment can accurately judge whether the UE has sent all the lead codes in the random access process. Under the condition of multiple uplink beams, the time for waiting for the UE to send the msg1 can be effectively reduced, and random access can be performed more quickly.
Further, the network side device appointing the specific preamble sent last in the msg1 sending process to the user terminal, including:
the network side device appoints the specific preamble to the user terminal through RRC _ Reconfiguration (radio resource control Reconfiguration) signaling; or
The information that the network side device informs the user terminal of a timer for timing the preamble sending interval of the two times comprises:
the network side device designates the duration of the timer to the user equipment through an RRC Connection reconfiguration (radio resource control Connection reconfiguration) signaling or a system message.
Further, after the network side device assigns the msg1 to the user terminal to send the specific preamble last sent in the process, the method further includes:
after receiving the specific preamble, the network side device judges that the user terminal ends the msg1 sending process, and the network side device replies an RAR to the user terminal.
Further, after the network side device notifies the user terminal of information of a timer for timing a preamble interval sent twice before and after, the method further includes:
the network side equipment starts the timer after receiving a preamble, and if the network side equipment does not receive the next preamble after the timer is overtime, the network side equipment judges that the user terminal ends the msg1 sending process, and the network side equipment replies RAR to the user terminal.
An embodiment of the present invention further provides a random access method, applied to a user equipment, as shown in fig. 3, including:
step 301: and the user terminal receives a specific random access preamble sent last in the msg1 sending process specified by the network side equipment.
And/or as shown in fig. 4, comprising:
step 401: and the user terminal receives the information of the timer which is sent by the network side equipment and used for timing the preamble sending interval of the two times.
In this embodiment, the network side device designates msg1 to send a specific random access preamble sent last in the process to the user terminal; or the network side device informs the user terminal of the information of the timer for timing the preamble interval sent twice before and after, so that after the network side device receives the specific preamble or the timer is overtime, the network side device can judge that the user terminal ends the msg1 sending process, and the network side device replies an RAR to the user terminal. By the technical scheme of the invention, the network side equipment can accurately judge whether the UE has sent all the lead codes in the random access process. Under the condition of multiple uplink beams, the time for waiting for the UE to send the msg1 can be effectively reduced, and random access can be performed more quickly.
Further, the air conditioner is provided with a fan,
after the user terminal receives the specific preamble sent last in the msg1 sending process specified by the network side device, the method further includes:
and before ending the msg1 sending process, the user terminal sends the specific preamble to the network side equipment.
Further, the air conditioner is provided with a fan,
after the ue receives the information of the timer for timing the preamble interval sent by the network side device for two times, the method further includes:
before ending the msg1 sending process, after the user terminal sends a preamble to the network side device, before the timer is overtime, the user terminal sends the next preamble to the network side device.
The following describes the random access method of the present invention in detail with reference to specific embodiments, taking a network side device as an example, wherein:
in the RRC _ reconfiguration (ho command) signaling sent to the UE, the base station assigns a preamble that the UE finally must send to the UE to end the msg1 sending process.
Or a timer is maintained at the base station side, and the current time of receiving the preamble sent by the last UE is recorded.
And when the base station finds that the UE sends the last preamble or the timer is overtime, the base station indicates that the UE sends more msg.1, the base station stops waiting for the subsequent msg.1 sending, and the base station starts the process of replying RAR.
The base station needs to inform the UE of the timer information, so that the UE must send two Msg1 before and after the Msg1 transitionsitor time interval corresponding to the timer, otherwise, the base station does not receive the Msg1 after the Msg 1. Specifically, the base station allocates the msg1 maximum waiting time (msg1 transitiontimtimer) before and after the UE through a system message or a specific IE in rrcconnectionreconfiguration.
For the UE, the UE sends the last preamble specified by the network side immediately before the non-contention RACH (Random Access Channel) procedure is completed.
An embodiment of the present invention further provides a network-side device, as shown in fig. 5, including a processor 51 and a transceiver 52,
the transceiver 52 is configured to assign msg1 to the user terminal to send a specific random access preamble that the user terminal needs to send at last in the process; and/or informing the user terminal of the information of a timer for timing the preamble interval sent twice.
Further, the air conditioner is provided with a fan,
the transceiver 52 is specifically configured to assign the specific preamble to the ue through RRC _ Reconfiguration signaling for RRC _ Reconfiguration; or
The transceiver is specifically configured to assign a duration of the timer to the ue through RRC Connection reconfiguration signaling or a system message.
Further, the air conditioner is provided with a fan,
the processor 51 is further configured to determine that the user terminal ends the msg1 sending process after the transceiver 52 receives the specific preamble;
the transceiver 52 is also configured to reply a random access response RAR to the user terminal.
Further, the air conditioner is provided with a fan,
the processor 51 is further configured to start the timer after the transceiver 52 receives a preamble, and if the transceiver 52 does not receive the next preamble after the timer expires, determine that the ue ends the msg1 sending process;
the transceiver 52 is also used to reply RAR to the user terminal.
An embodiment of the present invention further provides a user terminal, as shown in fig. 6, including a processor 61 and a transceiver 62,
the transceiver 62 is configured to receive a specific random access preamble sent last in a msg1 sending process specified by a network side device; and/or receiving information of a timer which is sent by the network side equipment and used for timing a preamble interval sent twice.
Further, the air conditioner is provided with a fan,
the transceiver 62 is further configured to send the specific preamble to the network side device before ending the msg1 sending process.
Further, the air conditioner is provided with a fan,
the transceiver 62 is further configured to send a next preamble to the network side device before the timer expires after sending a preamble to the network side device before ending the msg1 sending process.
The embodiment of the invention also provides network side equipment, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; the processor, when executing the program, implements the random access method as described above.
The embodiment of the invention also provides a user terminal, which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor; the processor, when executing the program, implements the random access method as described above.
Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the random access method as described above.
Computer-readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), Read Only Memory (ROM), Electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), Digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium that can be used to store information that can be accessed by a computing device. As defined herein, a computer readable medium does not include a transitory computer readable medium such as a modulated data signal and a carrier wave.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (15)
1. A random access method is applied to network side equipment, and is characterized by comprising the following steps:
the method comprises the steps that the network side equipment informs a user terminal of information of a timer used for timing a preamble interval sent twice in the front and back, or the network side equipment designates a specific random access preamble which needs to be sent by the user terminal in an msg1 sending process to the user terminal, and the network side equipment informs the user terminal of information of the timer used for timing the preamble interval sent twice in the front and back, the network side equipment starts the timer after receiving a preamble, if the network side equipment does not receive the next preamble after the timer is overtime, the network side equipment judges that the user terminal finishes the msg1 sending process, and the network side equipment replies RAR to the user terminal.
2. The random access method according to claim 1, wherein the network side device assigning the specific preamble last sent in the msg1 sending process to the user terminal comprises:
the network side equipment appoints the specific preamble to the user terminal through a radio resource control Reconfiguration signaling RRC _ Reconfiguration; or
The information that the network side device informs the user terminal of a timer for timing the preamble sending interval of the two times comprises:
and the network side equipment appoints the duration of the timer to the user terminal through radio resource control Connection reconfiguration signaling or system information.
3. The random access method according to claim 1, wherein after the network side device assigns a specific preamble that is last transmitted in a msg1transmission process to the user terminal, the method further comprises:
after receiving the specific preamble, the network side device judges that the user terminal ends the msg1 sending process, and the network side device replies a Random Access Response (RAR) to the user terminal.
4. A random access method is applied to a user terminal, and is characterized by comprising the following steps:
the method comprises the steps that a user terminal receives information of a timer which is sent by network side equipment and used for timing a preamble interval sent twice in the front and back, or the user terminal receives a specific random access preamble which is sent at last in a msg1 sending process appointed by the network side equipment, and the user terminal receives information of the timer which is sent by the network side equipment and used for timing the preamble interval sent twice in the front and back, the timer is started after the network side equipment receives a preamble, if the timer is overtime, the network side equipment does not receive the next preamble, the user terminal is judged to end the msg1 sending process, and the network side equipment replies RAR to the user terminal.
5. The random access method according to claim 4, wherein after the user terminal receives a specific preamble that is last transmitted in a msg1transmission process specified by the network side device, the method further comprises:
and before ending the msg1 sending process, the user terminal sends the specific preamble to the network side equipment.
6. The random access method according to claim 4, wherein after the ue receives the information of the timer for timing the preamble interval sent by the network side device twice, the method further comprises:
before ending the msg1 sending process, after the user terminal sends a preamble to the network side device, before the timer is overtime, the user terminal sends the next preamble to the network side device.
7. A network side device, comprising a processor and a transceiver,
the transceiver is used for informing the user terminal of the information of a timer used for timing the preamble interval sent twice before and after, or appointing a specific random access preamble which needs to be sent by the user terminal in the msg1 sending process to the user terminal, and informing the user terminal of the information of the timer used for timing the preamble interval sent twice before and after;
the processor is further configured to start the timer after the transceiver receives a preamble, and if the transceiver does not receive a next preamble after the timer expires, determine that the user terminal ends the msg1 sending process;
the transceiver is further configured to reply to the RAR to the user terminal.
8. The network-side device of claim 7,
the transceiver is specifically configured to specify the specific preamble to the ue through RRC _ Reconfiguration signaling; or
The transceiver is specifically configured to assign a duration of the timer to the ue through RRC Connection reconfiguration signaling or a system message.
9. The network-side device of claim 7,
the processor is further configured to determine that the user terminal ends the msg1 sending process after the transceiver receives the specific preamble;
the transceiver is further configured to reply a random access response, RAR, to the user terminal.
10. A user terminal, comprising a processor and a transceiver,
the transceiver is used for receiving information of a timer which is sent by the network side equipment and used for timing a preamble interval sent twice, or receiving a specific random access preamble which is sent last in an msg1 sending process and is specified by the network side equipment, and receiving information of the timer which is sent by the network side equipment and used for timing the preamble interval sent twice;
the transceiver is further configured to send a next preamble to the network side device before the timer expires after sending a preamble to the network side device before ending the msg1 sending process.
11. The user terminal of claim 10,
the transceiver is further configured to send the specific preamble to the network side device before ending the msg1 sending process.
12. The user terminal of claim 10,
the transceiver is further configured to send a next preamble to the network side device before the timer expires after sending a preamble to the network side device before ending the msg1 sending process.
13. A network-side device comprising a memory, a processor, and a computer program stored on the memory and executable on the processor; a random access method according to any of claims 1-3, when the processor executes the program.
14. A user terminal comprising a memory, a processor and a computer program stored on the memory and executable on the processor; characterized in that the processor, when executing the program, implements the random access method according to any of claims 4-6.
15. A computer readable storage medium, having stored thereon a computer program, characterized in that the program, when being executed by a processor, is adapted to carry out the steps of the random access method according to any of the claims 1-3 or to carry out the steps of the random access method according to any of the claims 4-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810089009.2A CN110099458B (en) | 2018-01-30 | 2018-01-30 | Random access method, network side equipment and user terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810089009.2A CN110099458B (en) | 2018-01-30 | 2018-01-30 | Random access method, network side equipment and user terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110099458A CN110099458A (en) | 2019-08-06 |
| CN110099458B true CN110099458B (en) | 2021-05-04 |
Family
ID=67442700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810089009.2A Active CN110099458B (en) | 2018-01-30 | 2018-01-30 | Random access method, network side equipment and user terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110099458B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860929B (en) * | 2009-04-13 | 2013-06-12 | 中兴通讯股份有限公司 | Inter-base station switching method |
| CN102264149B (en) * | 2010-05-26 | 2014-08-13 | 中兴通讯股份有限公司 | WCDMA system terminal random access method and apparatus thereof |
| CN107041012B (en) * | 2016-02-03 | 2022-11-22 | 北京三星通信技术研究有限公司 | Random access method based on differential beam, base station equipment and user equipment |
| WO2017188697A1 (en) * | 2016-04-27 | 2017-11-02 | 엘지전자(주) | Method for performing random access in wireless communication system and device for supporting same |
| US10630410B2 (en) * | 2016-05-13 | 2020-04-21 | Telefonaktiebolaget Lm Ericsson (Publ) | Network architecture, methods, and devices for a wireless communications network |
| CN107223361B (en) * | 2017-05-05 | 2021-09-28 | 北京小米移动软件有限公司 | Method for controlling random access network, user equipment and base station |
-
2018
- 2018-01-30 CN CN201810089009.2A patent/CN110099458B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN110099458A (en) | 2019-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102600808B1 (en) | Method and apparatus for performing random access procedure | |
| CN107211462B (en) | Method and apparatus for LTE RACH procedure enhancements | |
| CN108282899B (en) | Two-step competition random access method and device | |
| KR102261171B1 (en) | Method and apparatus for random access after random access backoff, and method and apparatus for directing random access backoff | |
| US10225865B2 (en) | Method for predetermining resource in random access, user equipment, and base station | |
| US11234265B2 (en) | Data transmission method and device, search space optimization method and device, and storage medium | |
| US11109247B2 (en) | Beam failure recovery method, device, and apparatus | |
| US20160330766A1 (en) | Non-contention random access method, node, system, and computer storage medium | |
| US20120082088A1 (en) | Method and Apparatus for Facilitating Relay Node Communications | |
| WO2009147709A1 (en) | Method for timing adjustment, mobile station, base station, and mobile communication system | |
| KR101653410B1 (en) | Data transmission/reception method and apparatus for performing contention based access in mobile telecommunication system | |
| US10660133B2 (en) | Method and system for random access and uplink data transmission for low latency communication | |
| KR20210022697A (en) | Transport Block Size for Contention-Free Random Access in Random Access Procedure | |
| EP3817434B1 (en) | Rach parameter optimization based on failure information recorded by ue and reported according to an indication from the network | |
| CN108617003B (en) | Method, device and user equipment for fast random access | |
| CN110099458B (en) | Random access method, network side equipment and user terminal | |
| WO2019136631A1 (en) | Random access techniques in wireless networks | |
| US20220225423A1 (en) | Method and system for data transmission in wireless network | |
| CN110708726B (en) | Random access resource using method, network side equipment and user terminal | |
| WO2021068237A1 (en) | Method and apparatus for receiving random access message, or method and apparatus for sending random access message | |
| CN114503771A (en) | Monitoring window termination during random access | |
| US11849490B2 (en) | Communication device, second communication device, communication system, and communication method | |
| JP5288075B2 (en) | Uplink transmission control method, mobile communication system, mobile station, and base station | |
| KR101790232B1 (en) | Low latency uplink data transmission method and system | |
| CN113498212A (en) | Random access method, terminal and network side equipment |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |