CN113260079A - Random access processing method, device, terminal and network side equipment - Google Patents
Random access processing method, device, terminal and network side equipment Download PDFInfo
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Abstract
The present disclosure provides a method, an apparatus, a terminal and a network side device for processing random access, where the method includes: under the condition that non-contention based 2-step random access initiated by a terminal fails, the terminal backs off or switches to other random access; wherein the other random accesses include at least one of: 2-step random access based on competition; 4 steps of random access based on competition; 4 steps of random access based on non-competition; at least one embodiment of the disclosure indicates, by means of network side configuration or a pre-agreed manner, a subsequent behavior of the terminal after a non-contention based 2-step random access failure, thereby improving the efficiency of random access.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method, an apparatus, a terminal, and a network device for processing random access.
Background
For a terminal and a base station working in an unlicensed frequency band, LBT (Listen before talk) operation must be performed before data is sent each time, if a channel is monitored to be busy, the terminal and the base station back off for a period of time and monitor again until the channel is idle for a period of time, and then the terminal and the base station send the data. In order to reduce the time delay of random access, the steps of the existing 4-step random access mechanism can be reduced to 2 steps, so that the number of LBT is reduced, and the whole time delay of random access is reduced.
The 2-step random access has the advantages of few steps and short time delay, and the application scene of the method is also extended to the permitted frequency band in a rational way. That is, both the unlicensed band and the licensed band may use 2-step random access.
In addition, for a handover scenario, the target base station may configure a dedicated random access resource for the terminal in the handover command to avoid collision between the terminal and other terminals during the random access process of the target cell, thereby increasing the speed of accessing the terminal to the target cell.
In order to further improve the random access performance in the handover process, a non-contention based 2-step random access process may also be introduced into the handover process. To distinguish from the newly introduced two-step random access procedure, the existing non-contention-based random access procedure is referred to as non-contention-based 4-step random access or conventional/existing non-contention-based random access.
The CFRA (Contention-Free Random Access) allocates a dedicated Random Access resource to the terminal to avoid collision with a Random Access resource used by another terminal, so that the terminal can quickly complete a Random Access process, and is generally applicable to a scenario with a high requirement on time delay, such as handover (enabling the terminal to Access a target cell as soon as possible and avoiding interruption of data transmission for a long time), beam failure monitoring BFR (enabling the terminal to find a suitable beam as soon as possible to recover connection with a serving cell), and the like.
As described above, the target base station may configure resources of two CFRA for the UE in the handover process, and after receiving the configuration, the terminal may also initiate two CFRA procedures in the target cell. If the two-step CFRA fails, the behavior of the terminal is not concluded.
Disclosure of Invention
At least one embodiment of the present disclosure aims to provide a processing method, an apparatus, a terminal and a network side device for random access, so as to solve the problem that in the prior art, a behavior of the terminal is not concluded yet under a 2-step CFRA failure condition.
In order to solve the above problem, at least one embodiment of the present disclosure provides a method for processing random access, which is applied to a terminal and includes:
under the condition that non-contention based 2-step random access initiated by a terminal fails, the terminal backs off or switches to other random access;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
As at least one embodiment of the present disclosure, if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first fractional bandwidth BWP, the terminal backs off or transitions to other random accesses, including:
the terminal backs off or switches to other random access on the first BWP;
or,
the terminal backs off or transitions to other random accesses on other BWPs than the first BWP.
As at least one embodiment of the present disclosure, the terminal backing off or switching to other random accesses includes:
and the terminal backs off or converts to the random access corresponding to the target information according to the network configuration or the pre-agreed target information.
As at least one embodiment of the present disclosure, the target information includes at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
As at least one embodiment of the present disclosure, in a case where the random access to which the terminal backs off or transitions to is random access on other BWPs, the target information further includes at least one of:
identification information of the other BWP;
frequency domain location information of the other BWPs;
subcarrier spacing information of the other BWPs.
As at least one embodiment of the present disclosure, in a case that the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
As at least one embodiment of the present disclosure, the first condition information includes:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the second condition information includes:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the third condition information includes:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the other random accesses include: other random accesses initiated based on the synchronization signal block and/or other random accesses initiated based on the reference signal of the channel state information.
At least one embodiment of the present disclosure further provides a method for processing random access, which is applied to a network device, and includes:
configuring fallback or converted target information for a terminal, wherein the target information is used for indicating other random accesses to which the terminal backs or converts after an initiated non-contention based 2-step random access fails;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
As at least one embodiment of the present disclosure, if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first partial bandwidth BWP, the other random accesses include:
other random accesses on the first BWP;
or,
other random accesses on other BWPs than the first BWP.
As at least one embodiment of the present disclosure, the target information includes at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
As at least one embodiment of the present disclosure, in a case that the other random access is a random access on other BWPs, the target information further includes at least one of:
identification information of other BWPs;
frequency domain location information of other BWPs;
subcarrier spacing information of other BWPs.
As at least one embodiment of the present disclosure, in a case where the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
As at least one embodiment of the present disclosure, the first condition information includes:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the second condition information includes:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the third condition information includes:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the other random accesses include: other random accesses initiated based on the synchronization signal block and/or other random accesses initiated based on the reference signal of the channel state information.
As at least one embodiment of the present disclosure, the configuring of fallback or converted target information for a terminal includes:
and configuring target information of rollback or conversion for the terminal according to the quality information of the received non-contention-based 2-step random access message A and/or the information of the dedicated random access resource of the network side equipment.
At least one embodiment of the present disclosure further provides a processing apparatus for random access, which is applied to a terminal, and includes:
a processing module, configured to, in a case that a non-contention based 2-step random access initiated by a terminal fails, back-off or switch to another random access by the terminal;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
At least one embodiment of the present disclosure also provides a terminal including a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, the processor being configured to:
under the condition that non-contention based 2-step random access initiated by a terminal fails, the terminal backs off or switches to other random access;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
At least one embodiment of the present disclosure further provides a processing apparatus for random access, which is applied to a network side device, and includes:
a configuration module, configured to configure target information of backoff or handover for a terminal, where the target information is used to indicate other random accesses to which the terminal backs or switches after an initiated non-contention based 2-step random access fails;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
At least one embodiment of the present disclosure also provides a network side device, including a processor and a transceiver, where the transceiver receives and transmits data under the control of the processor, and the processor is configured to:
configuring fallback or converted target information for a terminal, wherein the target information is used for indicating other random accesses to which the terminal backs or converts after an initiated non-contention based 2-step random access fails;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
At least one embodiment of the present disclosure also provides a communication device, which includes a memory, a processor, and a program stored in the memory and executable on the processor, and when the processor executes the program, the processing method of random access as described above is implemented.
At least one embodiment of the present disclosure also provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the steps in the processing method of random access as described above.
The technical scheme of the invention at least has the following beneficial effects:
in the method, the device, the terminal and the network side equipment for processing the random access, the terminal indicates the follow-up behavior after the 2-step random access failure based on non-competition through the network side configuration or the pre-agreed mode, so that the random access efficiency is improved.
Drawings
Fig. 1 illustrates one of the steps of a random access processing method according to at least one embodiment of the present disclosure;
fig. 2 is a second schematic diagram illustrating steps of a method for processing random access according to at least one embodiment of the disclosure;
fig. 3 is a schematic structural diagram of a processing apparatus for random access according to at least one embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a terminal provided in at least one embodiment of the present disclosure;
fig. 5 is a second schematic structural diagram of a processing apparatus for random access according to at least one embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a network-side device according to at least one embodiment of the present disclosure.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention provides a method for processing random access, which is applied to a terminal, and includes:
wherein the other random accesses include at least one of:
2-step random access (2-step CBRA) based on contention;
4-step random access based on contention (4-step CBRA);
non-contention based 4-step random access (4-step CFRA).
As at least one embodiment of the present disclosure, if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first fractional bandwidth BWP, the terminal backs off or transitions to other random accesses, including:
the terminal backs off or switches to other random access on the first BWP;
or,
the terminal backs off or transitions to other random accesses on other BWPs than the first BWP.
In other words, after the terminal fails to initiate the 2-step CFRA on the first BWP, the terminal may be instructed to initiate the 2-step CBRA, 4-step cbbra or 4-step CFRA on the first BWP by the network side indication or the pre-agreed manner;
or, after the terminal fails to initiate the 2-step CFRA on the first BWP, the terminal may be instructed to initiate the 2-step CBRA or the 4-step CFRA on other BWPs by the network side indication or the pre-agreed manner.
As at least one embodiment of the present disclosure, step 11 comprises:
and the terminal backs off or converts to the random access corresponding to the target information according to the network configuration or the pre-agreed target information.
It should be noted that the target information may be some parameters or some condition information, and is not specifically limited herein.
For example, the target information is network configuration, and the target information may be carried in a handover command sent by a network side device or carried in a reconfiguration with synchronization (reconfiguration within sync) command, which is not specifically limited herein.
The handover command or the reconfigurationWithSyn command may further include the number N of times or the time length T that the network attempts the 2-step CFRA for the terminal configured for the terminal, and/or random access resources configured for the 2-step CFRA.
As at least one embodiment of the present disclosure, the target information includes at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
Wherein the first condition information includes:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
the second condition information includes:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
the third condition information includes:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
The RSRP or RSRQ or SINR referred to in at least one embodiment of the present disclosure may be cell-level, and may also be beam-level (e.g., synchronization signal block SSB level, channel state information reference signal CSI-RS level).
The first threshold, the second threshold, and the third threshold may be the same value or different values, and are not limited herein.
For example, if the RSRP, RSRQ, or SINR measured by the terminal is higher than or not lower than a first threshold, the terminal backs off or switches to a 2-step CBRA; for another example, if the RSRP, RSRQ, or SINR measured by the terminal is lower than or not higher than the second threshold, the terminal backs off or transitions to 4-step CBRA.
As at least one embodiment of the present disclosure, in a case where the random access to which the terminal backs off or transitions to is random access on other BWPs, the target information further includes at least one of:
identification information of the other BWP;
frequency domain location information of the other BWPs;
subcarrier spacing information of the other BWPs.
As at least one embodiment of the present disclosure, in a case that the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
For example, the terminal tries the 2-step CBRA (N times or for a duration T) first according to the target information, and tries the 4-step CBRA again if failing; for another example, the terminal tries the 4-step CFRA first according to the target information, and tries the 4-step CBRA again if the target information fails; for another example, the terminal tries 2-stepCBRA first (tries N times or for a duration T), tries 4-step CFRA if failed, and tries 4-step CBRA if failed, according to the target information; for another example, the terminal tries 4-step CFRA first according to the target information, tries 2-step CBRA again if failing, and tries 4-step CBRA again if failing; not to mention here.
In at least one embodiment of the present disclosure, the other random accesses include: other random accesses initiated based on the synchronization signal block SSB and/or other random accesses initiated based on the reference signal CSI-RS of the channel state information.
The target information may further include: instructing the terminal to preferentially attempt other random access based on SSB; or, the terminal is instructed to preferentially attempt other random access based on the CSI-RS.
In summary, the terminal initiates the 2-step CFRA procedure, and if the 2-step CFRA procedure fails (for example, the random access procedure is not successful after the terminal sends the message a N times, or the random access procedure is not successful after a certain time period elapses from the first time the terminal sends the message a), the terminal may perform one of the following operations:
1) performing 2-step CBRA;
2) 4-step CBRA is carried out;
3) 4-step CFRA is carried out;
4) try 2-step CBRA first (try N times or for a time period T), try 4-step CBRA again if failed;
5) trying 4-step CFRA, if failed, trying 4-step CBRA;
6) try 2-step CBRA first (try N times or for a duration of T), try 4-step CFRA again if failing, try 4-step CBRA again if failing;
7) try 4-step CFRA first, try 2-step CBRA again if it fails, and try 4-step CBRA again if it fails.
In summary, in at least one embodiment of the present disclosure, a network side configures or pre-promised manner to indicate a subsequent behavior of the terminal after a non-contention based 2-step random access failure, so as to improve the efficiency of random access.
As shown in fig. 2, at least one embodiment of the present disclosure further provides a method for processing random access, which is applied to a network side device, and includes:
wherein the other random accesses include at least one of:
2-step random access (2-step CBRA) based on contention;
4-step random access based on contention (4-step CBRA);
non-contention based 4-step random access (4-step CFRA).
For example, the target information may be carried in a handover command sent by the network side device or carried in a reconfiguration with synchronization (reconfiguration within sync) command, which is not specifically limited herein.
The handover command or the reconfigurationWithSyn command may further include the number N of times or the time length T that the network attempts the 2-step CFRA for the terminal configured for the terminal, and/or random access resources configured for the 2-step CFRA.
As at least one embodiment of the present disclosure, if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first partial bandwidth BWP, the other random accesses include:
other random accesses on the first BWP;
or,
other random accesses on other BWPs than the first BWP.
In other words, after the terminal fails to initiate the 2-step CFRA on the first BWP, the terminal may be instructed to initiate the 2-step CBRA, 4-step cbbra or 4-step CFRA on the first BWP by the network side indication or the pre-agreed manner;
or, after the terminal fails to initiate the 2-step CFRA on the first BWP, the terminal may be instructed to initiate the 2-step CBRA or the 4-step CFRA on other BWPs by the network side indication or the pre-agreed manner.
As at least one embodiment of the present disclosure, the target information includes at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
Wherein the first condition information includes:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
the second condition information includes:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
the third condition information includes:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
The RSRP or RSRQ or SINR referred to in at least one embodiment of the present disclosure may be cell-level, and may also be beam-level (e.g., synchronization signal block SSB level, channel state information reference signal CSI-RS level).
For example, if the RSRP, RSRQ, or SINR measured by the terminal is higher than or not lower than a first threshold, the terminal backs off or switches to a 2-step CBRA; for another example, if the RSRP, RSRQ, or SINR measured by the terminal is lower than or not higher than the second threshold, the terminal backs off or transitions to 4-step CBRA.
As at least one embodiment of the present disclosure, in a case that the other random access is a random access on other BWPs, the target information further includes at least one of:
identification information of other BWPs;
frequency domain location information of other BWPs;
subcarrier spacing information of other BWPs.
As at least one embodiment of the present disclosure, in a case where the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
For example, the terminal is instructed to try 2-step CBRA first (try N times or for a duration of T), and if it fails, try 4-step CBRA again; as another example, the terminal is instructed to try the 4-step CFRA first, and try the 4-step CBRA again if it fails; as another example, the terminal is instructed to try 2-step CBRA first (try N times or for a duration of T), try 4-step CFRA again if failed, try 4-step CBRA again if failed; for another example, the terminal is instructed to try 4-step CFRA first, try 2-step CBRA again if failure, and try 4-step CBRA again if failure; not to mention here.
In at least one embodiment of the present disclosure, the other random accesses include: other random accesses initiated based on the synchronization signal block SSB and/or other random accesses initiated based on the reference signal CSI-RS of the channel state information.
The target information may further include: instructing the terminal to preferentially attempt other random access based on SSB; or, the terminal is instructed to preferentially attempt other random access based on the CSI-RS.
As at least one embodiment of the present disclosure, step 21 includes:
and configuring target information of rollback or conversion for the terminal according to the quality information of the received non-contention-based 2-step random access message A and/or the information of the dedicated random access resource of the network side equipment.
For example, when the quality of the message a received by the network side device is greater than a certain threshold, it indicates that the terminal may attempt 2-step CBRA; for another example, if the quality of the message a received by the network side device is lower than a certain threshold, the terminal may attempt 4-step CBRA; for another example, the quality of the message a received by the network side device is lower than a certain threshold, and the network side dedicated random access resource is still sufficient, indicating that the terminal attempts to perform 4-step CFRA; or instruct the terminal to try 2-step CBRA first and try 4-step cbbra if it fails or fails a certain number of times.
It should be noted that the parameter N or T may be multiplexed with relevant parameters of other scenarios, such as a parameter of a network broadcast 2-step CBRA falling back to 4-step CBRA at initial access.
In summary, in at least one embodiment of the present disclosure, a network side configures or pre-promised manner to indicate a subsequent behavior of the terminal after a non-contention based 2-step random access failure, so as to improve the efficiency of random access.
As shown in fig. 3, at least one embodiment of the present disclosure further provides a processing apparatus for random access, which is applied to a terminal, and includes:
a processing module 31, configured to back off or switch to another random access in case that a non-contention based 2-step random access initiated by a terminal fails;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
As at least one embodiment of the present disclosure, if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first partial bandwidth BWP, the processing module includes:
a first processing sub-module for backing off or switching to other random accesses on a first BWP;
or,
fallback or transition to other random accesses on other BWPs than the first BWP.
As at least one embodiment of the present disclosure, the processing module includes:
and the second processing submodule is used for backing or converting the terminal to the random access corresponding to the target information according to the network configuration or the pre-agreed target information.
As at least one embodiment of the present disclosure, the target information includes at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
As at least one embodiment of the present disclosure, in a case where the random access to which the terminal backs off or transitions to is random access on other BWPs, the target information further includes at least one of:
identification information of the other BWP;
frequency domain location information of the other BWPs;
subcarrier spacing information of the other BWPs.
As at least one embodiment of the present disclosure, in a case that the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
As at least one embodiment of the present disclosure, the first condition information includes:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the second condition information includes:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the third condition information includes:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the other random accesses include: other random accesses initiated based on the synchronization signal block and/or other random accesses initiated based on the reference signal of the channel state information.
In summary, in at least one embodiment of the present disclosure, a network side configures or pre-promised manner to indicate a subsequent behavior of the terminal after a non-contention based 2-step random access failure, so as to improve the efficiency of random access.
It should be noted that, the processing apparatus for random access provided in at least one embodiment of the present disclosure is an apparatus capable of executing the processing method for random access, and all embodiments of the processing method for random access are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 4, at least one embodiment of the present disclosure also provides a terminal including a processor 400 and a transceiver 410, the terminal further including a user interface 420, the transceiver 410 receiving and transmitting data under the control of the processor 400, the processor 400 being configured to:
under the condition that the non-competition based 2-step random access initiated by the terminal fails, backing off or switching to other random accesses;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
As at least one embodiment of the present disclosure, if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first fractional bandwidth BWP, the processor 400 is further configured to:
fallback or transitioning to other random access on the first BWP;
or,
fallback or transition to other random accesses on other BWPs than the first BWP.
As at least one embodiment of the present disclosure, the processor 400 is further configured to:
and backing or switching to random access corresponding to the target information according to network configuration or pre-agreed target information.
As at least one embodiment of the present disclosure, the target information includes at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
As at least one embodiment of the present disclosure, in a case where the random access to which the terminal backs off or transitions to is random access on other BWPs, the target information further includes at least one of:
identification information of the other BWP;
frequency domain location information of the other BWPs;
subcarrier spacing information of the other BWPs.
As at least one embodiment of the present disclosure, in a case that the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
As at least one embodiment of the present disclosure, the first condition information includes:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the second condition information includes:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the third condition information includes:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the other random accesses include: other random accesses initiated based on the synchronization signal block and/or other random accesses initiated based on the reference signal of the channel state information.
In summary, in at least one embodiment of the present disclosure, a network side configures or pre-promised manner to indicate a subsequent behavior of the terminal after a non-contention based 2-step random access failure, so as to improve the efficiency of random access.
It should be noted that, at least one embodiment of the present disclosure provides a terminal capable of executing the processing method of random access, and all embodiments of the processing method of random access are applicable to the terminal, and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a communication device, where the communication device is a terminal, and the communication device includes a memory, a processor, and a computer program that is stored in the memory and is executable on the processor, where the processor implements each process in the above-described processing method for random access when executing the program, and can achieve the same technical effect, and details are not described here to avoid repetition.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the above-described processing method for random access, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As shown in fig. 5, at least one embodiment of the present disclosure further provides a processing apparatus for random access, which is applied to a network side device, and includes:
a configuration module 51, configured to configure target information of backoff or handover for a terminal, where the target information is used to indicate other random accesses to which the terminal backs or switches after an initiated non-contention based 2-step random access failure;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
As at least one embodiment of the present disclosure, if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first partial bandwidth BWP, the other random accesses include:
other random accesses on the first BWP;
or,
other random accesses on other BWPs than the first BWP.
As at least one embodiment of the present disclosure, the target information includes at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
As at least one embodiment of the present disclosure, in a case that the other random access is a random access on other BWPs, the target information further includes at least one of:
identification information of other BWPs;
frequency domain location information of other BWPs;
subcarrier spacing information of other BWPs.
As at least one embodiment of the present disclosure, in a case where the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
As at least one embodiment of the present disclosure, the first condition information includes:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the second condition information includes:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the third condition information includes:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the other random accesses include: other random accesses initiated based on the synchronization signal block and/or other random accesses initiated based on the reference signal of the channel state information.
As at least one embodiment of the present disclosure, the configuration module includes:
and the configuration submodule is used for configuring rollback or conversion target information for the terminal according to the quality information of the received non-contention-based 2-step random access message A and/or the information of the dedicated random access resource of the network side equipment.
In summary, in at least one embodiment of the present disclosure, a network side configures or pre-promised manner to indicate a subsequent behavior of the terminal after a non-contention based 2-step random access failure, so as to improve the efficiency of random access.
It should be noted that, the processing apparatus for random access provided in at least one embodiment of the present disclosure is an apparatus capable of executing the processing method for random access, and all embodiments of the processing method for random access are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 6, at least one embodiment of the present disclosure further provides a network side device, including a processor 600 and a transceiver 610, where the transceiver 610 receives and transmits data under the control of the processor 600, and the processor 600 is configured to perform the following operations:
configuring fallback or converted target information for a terminal, wherein the target information is used for indicating other random accesses to which the terminal backs or converts after an initiated non-contention based 2-step random access fails;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
As at least one embodiment of the present disclosure, if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first partial bandwidth BWP, the other random accesses include:
other random accesses on the first BWP;
or,
other random accesses on other BWPs than the first BWP.
As at least one embodiment of the present disclosure, the target information includes at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
As at least one embodiment of the present disclosure, in a case that the other random access is a random access on other BWPs, the target information further includes at least one of:
identification information of other BWPs;
frequency domain location information of other BWPs;
subcarrier spacing information of other BWPs.
As at least one embodiment of the present disclosure, in a case where the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
As at least one embodiment of the present disclosure, the first condition information includes:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the second condition information includes:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the third condition information includes:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
As at least one embodiment of the present disclosure, the other random accesses include: other random accesses initiated based on the synchronization signal block and/or other random accesses initiated based on the reference signal of the channel state information.
As at least one embodiment of the present disclosure, the processor is further configured to:
and configuring target information of rollback or conversion for the terminal according to the quality information of the received non-contention-based 2-step random access message A and/or the information of the dedicated random access resource of the network side equipment.
In summary, in at least one embodiment of the present disclosure, a network side configures or pre-promised manner to indicate a subsequent behavior of the terminal after a non-contention based 2-step random access failure, so as to improve the efficiency of random access.
It should be noted that, the network side device provided in at least one embodiment of the present disclosure is a network side device capable of executing the processing method of random access, and all embodiments of the processing method of random access are applicable to the network side device, and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a communication device, where the communication device is a network-side device, and includes a memory, a processor, and a computer program that is stored in the memory and is executable on the processor, and when the processor executes the program, the processor implements each process in the above-described processing method for random access, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the above-described processing method for random access, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
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 (26)
1. A processing method of random access is applied to a terminal, and is characterized by comprising the following steps:
under the condition that non-contention based 2-step random access initiated by a terminal fails, the terminal backs off or switches to other random access;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
2. The method according to claim 1, wherein if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first fractional bandwidth BWP, the other random accesses include:
other random accesses on the first BWP;
or,
other random accesses on other BWPs than the first BWP.
3. The method according to claim 1 or 2, wherein the terminal backs off or switches to other random access, comprising:
and the terminal backs off or converts to the random access corresponding to the target information according to the network configuration or the pre-agreed target information.
4. The method of claim 3, wherein the target information comprises at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
5. The method according to claim 3 or 4, wherein in case that the random access to which the terminal backs off or transitions to is random access on other BWPs, the target information further comprises at least one of:
identification information of the other BWP;
frequency domain location information of the other BWPs;
subcarrier spacing information of the other BWPs.
6. The method according to claim 4, wherein in case that the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
7. The method of claim 4, wherein the first condition information comprises:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
8. The method of claim 4, wherein the second condition information comprises:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
9. The method of claim 4, wherein the third condition information comprises:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
10. The method of claim 1, wherein the other random accesses comprise: other random accesses initiated based on the synchronization signal block and/or other random accesses initiated based on the reference signal of the channel state information.
11. A processing method of random access is applied to network side equipment, and is characterized by comprising the following steps:
configuring fallback or converted target information for a terminal, wherein the target information is used for indicating other random accesses to which the terminal backs or converts after an initiated non-contention based 2-step random access fails;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
12. The method according to claim 11, wherein if the non-contention based 2-step random access initiated by the terminal is a non-contention 2-step random access on the first fractional bandwidth BWP, the other random accesses include:
other random accesses on the first BWP;
or,
other random accesses on other BWPs than the first BWP.
13. The method according to claim 11 or 12, wherein the target information comprises at least one of:
whether to backoff or switch to contention-based 2-step random access;
whether to backoff or switch to contention-based 4-step random access;
whether to backoff or switch to non-contention based 4-step random access;
first conditional information for fallback or transition to contention-based 2-step random access;
second condition information for fallback or transition to contention-based 4-step random access;
and backing off or switching to the third condition information of the non-contention based 4-step random access.
14. The method according to claim 12, wherein in case the other random access is a random access on other BWPs, the target information further comprises at least one of:
identification information of other BWPs;
frequency domain location information of other BWPs;
subcarrier spacing information of other BWPs.
15. The method according to claim 13, wherein in case that the other random accesses include at least two random accesses, the target information further includes:
an attempted access order of the at least two random accesses.
16. The method of claim 13, wherein the first condition information comprises:
the signal parameter value measured by the terminal is greater than a first threshold value, or greater than or equal to the first threshold value, or not lower than the first threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
17. The method of claim 13, wherein the second condition information comprises:
the value of the signal parameter measured by the terminal is smaller than a second threshold value, or smaller than or equal to the second threshold value, or not higher than the second threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
18. The method of claim 13, wherein the third condition information comprises:
the value of the signal parameter measured by the terminal is smaller than a third threshold value, or smaller than or equal to the third threshold value, or not higher than the third threshold value;
wherein the signal parameter value is reference signal received power RSRP or reference signal quality RSRQ or signal to interference plus noise ratio SINR.
19. The method of claim 11, wherein the other random accesses comprise: other random accesses initiated based on the synchronization signal block and/or other random accesses initiated based on the reference signal of the channel state information.
20. The method according to claim 11, wherein the configuring target information for fallback or handover for the terminal comprises:
and configuring target information of rollback or conversion for the terminal according to the quality information of the received non-contention-based 2-step random access message A and/or the information of the dedicated random access resource of the network side equipment.
21. A processing device for random access, applied to a terminal, is characterized by comprising:
the processing module is used for backing off or converting to other random accesses under the condition that the non-contention based 2-step random access initiated by the terminal fails;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
22. A terminal comprising a processor and a transceiver, the transceiver receiving and transmitting data under control of the processor, characterized in that the processor is adapted to:
under the condition that the non-competition based 2-step random access initiated by the terminal fails, backing off or switching to other random accesses;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
23. A processing device for random access is applied to a network side device, and is characterized by comprising:
a configuration module, configured to configure target information of backoff or handover for a terminal, where the target information is used to indicate other random accesses to which the terminal backs or switches after an initiated non-contention based 2-step random access fails;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
24. A network side device comprising a processor and a transceiver, the transceiver receiving and transmitting data under the control of the processor, wherein the processor is configured to:
configuring fallback or converted target information for a terminal, wherein the target information is used for indicating other random accesses to which the terminal backs or converts after an initiated non-contention based 2-step random access fails;
wherein the other random accesses include at least one of:
2-step random access based on competition;
4 steps of random access based on competition;
4-step random access based on non-competition.
25. A communication device comprising a memory, a processor, and a program stored on the memory and executable on the processor; a processor implementing a processing method for random access according to any one of claims 1 to 10 when executing the program; alternatively, the processor implements the processing method of random access according to any one of claims 11 to 20 when executing the program.
26. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, carries out the steps of the method for handling random access according to any one of claims 1 to 10; or the program, when being executed by a processor, implements the steps in the method for handling random access according to any of claims 11-20.
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Application publication date: 20210813 |