CN109429355B - Random access processing method, user terminal and network side equipment - Google Patents
Random access processing method, user terminal and network side equipment Download PDFInfo
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- CN109429355B CN109429355B CN201710731478.5A CN201710731478A CN109429355B CN 109429355 B CN109429355 B CN 109429355B CN 201710731478 A CN201710731478 A CN 201710731478A CN 109429355 B CN109429355 B CN 109429355B
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- 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 processing method of random access, a user terminal and network side equipment, wherein the method comprises the following steps: if the random access attempt fails, selecting a backoff value of the next random access attempt according to a backoff range corresponding to the random access, wherein the backoff range is a range value determined according to a set parameter corresponding to the current random access attempt; and delaying the next random access attempt according to the back-off value. The backspacing range is determined according to the setting parameters corresponding to the random access attempt, so that different backspacing ranges are configured for different random accesses, the flexibility of configuration of the backspacing ranges is improved, and different delay performances can be achieved for different random access configurations.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a processing method for random access, a user terminal, and a network side device.
Background
Compared with the existing mobile communication system, the future 5G mobile communication system needs to adapt to more diversified scenes and service requirements. The main scenes of the 5G comprise eMBB, URLLC and mMTC, and the scenes provide requirements for the system such as high reliability, low time delay, large bandwidth, wide coverage and the like. In order to meet different services and different application scenarios with different requirements, the subcarrier spacing of the 5G system is no longer single 15kHz as in LTE, the system can support multiple subcarrier spacings, and different subcarrier spacings can be suitable for different scenarios. For example, for a high frequency band and a large bandwidth, a relatively large subcarrier spacing may be configured. Meanwhile, a large subcarrier interval corresponds to a small symbol length in the time domain, and the requirement of low-delay service can be met.
Different subcarrier intervals are reflected to the MAC medium access control layer and are embodied as different TTI lengths. Also called different baseband parameters numerology, different delay requirements may be achieved for different numerologies, as well as different delay requirements for random access for different services.
However, in the existing random access process, the existing user terminal uniformly sets backoff ranges (i.e., backoff parameters) for all random access processes, and cannot meet the random access requirements for different delays to implement different backoff range settings, so the existing random access process has a problem of poor flexibility of backoff range configuration.
Disclosure of Invention
The embodiment of the invention provides a processing method of random access, a user terminal and network side equipment, aiming at solving the problem of poor flexibility of configuration of a backoff range in the process of random access.
In a first aspect, an embodiment of the present invention provides a method for processing random access, which is applied to a user equipment, and includes:
if the random access attempt fails, selecting a backoff value of the next random access attempt according to a backoff range corresponding to the random access, wherein the backoff range is a range value determined according to a set parameter corresponding to the current random access attempt;
and delaying the next random access attempt according to the back-off value.
In a second aspect, an embodiment of the present invention further provides a method for processing random access, which is applied to a network side device, and includes:
receiving a random access attempt sent by a user terminal;
determining a backspacing range according to a set parameter corresponding to the random access attempt, wherein the backspacing range is used for a user terminal to select a backspacing value of the next random access attempt when the random access fails;
and sending a Random Access Response (RAR) message to the user terminal according to the random access attempt, wherein the RAR message carries a parameter value for indicating the backoff range.
In a third aspect, an embodiment of the present invention further provides a user terminal, including:
a selecting module, configured to select a backoff value of a next random access attempt according to a backoff range corresponding to random access if the random access attempt fails, where the backoff range is a range value determined according to a setting parameter corresponding to the current random access attempt;
and the processing module is used for delaying the next random access attempt according to the back-off value.
In a fourth aspect, an embodiment of the present invention further provides a network side device, including:
the signal receiving module is used for receiving a random access attempt sent by a user terminal;
a determining module, configured to determine a backoff range according to a setting parameter corresponding to the current random access attempt, where the backoff range is used for a user terminal to select a backoff value of a next random access attempt when the current random access fails;
a first sending module, configured to send a random access response RAR message to the user terminal according to the random access attempt, where the RAR message carries a parameter value used for indicating the backoff range.
In a fifth aspect, an embodiment of the present invention further provides a user terminal, including:
one or more processors;
a memory; and
one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs when executed implement the steps in the processing method of random access described above.
In a sixth aspect, an embodiment of the present invention further provides a network side device, including:
one or more processors;
a memory; and
one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the programs when executed implement the steps in the processing method of random access described above.
In a seventh aspect, an embodiment of the present invention further provides 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 processing method for random access.
In this way, in the embodiment of the present invention, if the random access attempt fails, the backoff value of the next random access attempt is selected according to the backoff range corresponding to the random access, where the backoff range is a range value determined according to the setting parameter corresponding to the current random access attempt; and delaying the next random access attempt according to the back-off value. The backspacing range is determined according to the setting parameters corresponding to the random access attempt, so that different backspacing ranges are configured for different random accesses, the flexibility of configuration of the backspacing ranges is improved, and different delay performances can be achieved for different random access configurations.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart of a processing method for random access according to an embodiment of the present invention;
fig. 2 is a second flowchart of a processing method for random access according to an embodiment of the present invention;
fig. 3 is a third flowchart of a processing method for random access according to an embodiment of the present invention;
fig. 4 is a fourth flowchart of a processing method of random access according to an embodiment of the present invention;
fig. 5 is one of the structural diagrams of a user terminal according to an embodiment of the present invention;
fig. 6 is one of the structural diagrams of the network side device according to an embodiment of the present invention;
fig. 7 is a second block diagram of a ue according to an embodiment of the present invention;
fig. 8 is a second block diagram of a network device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart of a processing method for random access according to an embodiment of the present invention, and as shown in fig. 1, the processing method includes the following steps:
the processing method of random access provided by the embodiment of the invention is applied to the user terminal and is used for the user terminal to perform the delay processing of the failure of the random access attempt.
In this step, the size of the backoff range may be set according to actual needs, and the size of the backoff range in this embodiment depends on the value of the setting parameter corresponding to the current random access attempt. The type of the setting parameter may be set according to actual needs, for example, the setting parameter includes a baseband parameter number adopted in the random access process, a service corresponding to the random access, a priority of the service corresponding to the random access, or a service-related requirement.
Specifically, the backoff range may be determined according to a first parameter value of a backoff parameter configured in a random access process of the user terminal, the user terminal may directly set a second parameter value of the backoff parameter configured by the network side device according to the priority level as the first parameter value, and the user terminal may further adjust the backoff parameter according to the priority level according to the second parameter value of the backoff parameter configured by the network side device. After the user terminal initializes a random access process, the first parameter value of the backoff parameter is 0, and when the user terminal receives the second parameter value of the backoff parameter configured by the network side equipment, the user terminal configures the first parameter value of the backoff parameter in the random access process.
The above-mentioned backoff value is a value in a backoff range, for example, the backoff range is 0 to 128ms, and the backoff value may be any value in 0 to 128ms, such as 50ms, 60ms, etc.
And 102, delaying the next random access attempt according to the back-off value.
In the random access process, if the current random access attempt fails, the next random access attempt is delayed according to the backoff value selected according to the first parameter value of the backoff parameter, for example, the backoff value is 50ms, and the next random access attempt is performed after delaying 50ms when it is determined that the access fails.
In this way, in the embodiment of the present invention, if the random access attempt fails, the backoff value of the next random access attempt is selected according to the backoff range corresponding to the random access, where the backoff range is a range value determined according to the setting parameter corresponding to the current random access attempt; and delaying the next random access attempt according to the back-off value. The backspacing range is determined according to the setting parameters corresponding to the random access attempt, so that different backspacing ranges are configured for different random accesses, the flexibility of configuration of the backspacing ranges is improved, and different delay performances can be achieved for different random access configurations.
Further, the method for sending the backoff parameter by the network side device may be set according to actual needs, and preferably, in this embodiment, the backoff parameter may be carried in a random access response RAR message. Specifically, referring to fig. 2, before the step 101, the method further includes:
103, sending a preamble to the network side device;
in this step, the random access attempt is an msg1 signal, and the preamble carried by the random access attempt may be a proprietary preamble or a non-proprietary preamble.
And step 104, receiving a Random Access Response (RAR) message sent by the network side device according to the preamble sequence code, where the RAR message carries a parameter value, and the parameter value is used to determine the backoff range.
It should be understood that the RAR message is Msg2, the network side device receives Msg1, calculates the timing advance TA, and sends a random access response to the terminal, where the random access response at least includes the timing advance information and an uplink scheduling grant UL grant for Msg 3. The user terminal needs to continuously listen in the whole RAR window to receive the corresponding RAR message. In the Backoff mechanism, indices of the Backoff parameters are defined, and each index corresponds to the value of the Backoff.
In this step, the MAC header of the RAR message includes a subheader of a Backoff indicator (that is, a parameter value carried by the RAR message, or a second parameter value of the Backoff parameter), where the subheader may indicate a specific Backoff parameter index through 4 bits, and when the network side device directly configures the subheader according to the priority level, the user terminal may set the first parameter value of the Backoff parameter as the value indicated in the subheader.
It should be understood that the above parameter value may indicate a specific range value of the backoff range, or may indicate only the maximum value of the backoff range, and in order to reduce resource waste, it is preferable that the minimum value of the backoff range is a default value of 0, and the above parameter value is used to indicate the maximum backoff value (i.e., the maximum value of the backoff range).
It should be noted that, in this embodiment, the backoff range may be directly determined by the network side device, or may be determined by autonomous scaling or offset of the user terminal, and the following embodiment describes the determination of the backoff range in detail.
In an embodiment, the step 104 further includes:
setting the maximum backspacing value indicated by the parameter value as the maximum value of the backspacing range, wherein the minimum value of the backspacing range is a default value of 0.
In this embodiment, the network side device selects the maximum value of the backoff range according to the set parameter, and indicates the maximum value through the parameter value, and at this time, after receiving the parameter value, the user terminal sets the parameter value as the value of the backoff parameter. For example, the maximum backoff value indicated by the parameter value is 128ms, the user terminal sets the value of the backoff parameter to 128 ms.
In another embodiment, the step 104 further includes:
and after the maximum backspacing value indicated by the parameter value is zoomed according to a target zoom ratio or is superposed according to a target offset, the maximum backspacing value is set as the maximum value of the backspacing range, and the minimum value of the backspacing range is a default value 0.
In this embodiment, the target scaling is a scaling value determined according to the setting parameter; the target offset is an offset determined according to the setting parameter.
For example, different priority levels of the setting parameter correspond to different proportional values, and the magnitude of the proportional value may be set according to actual needs, which is not further limited herein. For example, when a random access attempt fails, the proportional value is 0.5, and if the maximum backoff value indicated by the parameter value is 128ms, the ue sets the first parameter value of the backoff parameter to 64 ms.
It should be noted that the random access response RAR message of the random access attempt in step 103 may not be received in the process of one random access attempt, and there are many cases in selecting the first parameter value of the backoff parameter, which is described in detail below:
in the first case, the RAR message is not received in one random access procedure: if the random access attempt is the first random access attempt of the user terminal in a random access process, using an initial value 0 for a first parameter value of a backoff parameter; if the random access attempt is not the first random access attempt of a random access process for the user terminal, the first parameter value of the backoff parameter uses the backoff parameter carried by the RAR message received before in the random access process, and if the RAR message is not received before, the first parameter value of the backoff parameter still uses the initial value 0.
It should be noted that the random access attempt may be a contention random access or a non-contention random access. When the random access attempt is a contention random access, after the step 104 and before the step 101, the method further includes:
step 105, sending a competition resolving request to network side equipment;
in this step, the contention resolution request is Msg3, the ue sends uplink transmission on the UL grant specified by Msg2, and the content of uplink transmission is different for different random access reasons Msg3, for example, for initial access, Msg3 transmits an RRC connection establishment request.
And step 106, receiving a contention resolution response sent by the network side device according to the contention resolution request, where the contention resolution response is used to indicate whether the random access of the user terminal is successful.
In this step, the contention resolution response is Msg4, and the ue can determine whether the random access attempt is successful according to Msg 4. If the random access attempt is successful, a random access process is completed, and if the random access attempt fails, the next random access attempt is performed after delaying for a certain time according to the backoff value.
Further, the selection manner of the backoff value may be set according to actual needs, and preferably, in this embodiment, as shown in fig. 3, the step 102 includes:
and randomly selecting the back-off value of the next random access attempt according to the average distribution in the back-off range corresponding to the random access.
In this step, the uniform distribution is random, which means that the probability of each value in the backoff range being selected is equal. For example, the backoff range is 0 to 99ms, and the backoff value is an integer, so that the probability that all integers from 0 to 99 are randomly selected by the ue is 1%.
Further, referring to fig. 4, the present invention further provides a method for processing random access, where the method includes:
the processing method of random access provided by the embodiment of the invention is applied to network side equipment and is used for the user terminal to perform time delay control of random access attempt failure.
In this step, the preamble carried by the random access attempt may be a proprietary preamble or a non-proprietary preamble.
in this step, the size of the backoff range may be set according to actual needs, and the size of the backoff range in this embodiment depends on the value of the setting parameter corresponding to the current random access attempt. The type of the setting parameter may be set according to actual needs, for example, the setting parameter includes a baseband parameter number adopted in the random access process, a service corresponding to the random access, a priority of the service corresponding to the random access, or a service-related requirement.
Specifically, the backoff range may be determined according to a first parameter value of a backoff parameter configured in a random access process of the ue, and the network side device directly sets a second parameter value of the backoff parameter configured according to the priority level as the first parameter value. After the user terminal initializes a random access process, the first parameter value of the backoff parameter is 0, and when the user terminal receives the second parameter value of the backoff parameter configured by the network side equipment, the user terminal configures the first parameter value of the backoff parameter in the random access process.
it should be understood that the network side device receives the random access attempt, calculates a timing advance TA, and sends a random access response to the terminal, where the random access response at least includes the timing advance information and an uplink scheduling grant UL grant for the Msg 3. The user terminal needs to continuously listen in the whole RAR window to receive the corresponding RAR message. In the Backoff mechanism, indices of the Backoff parameters are defined, and each index corresponds to the value of the Backoff.
In this step, the MAC header of the RAR message includes a subheader of a Backoff indicator (that is, a parameter value carried by the RAR message, or a second parameter value of the Backoff parameter), where the subheader may indicate a specific Backoff parameter index through 4 bits, and when the network side device directly configures the subheader according to the priority level, the user terminal may set the first parameter value of the Backoff parameter as the value indicated in the subheader. In this step, the MAC header of the RAR message includes a subheader of a Backoff indicator (that is, a parameter value carried by the RAR message, or a second parameter value of the Backoff parameter), where the subheader may indicate a specific Backoff parameter index through 4 bits, and when the network side device directly configures the subheader according to the priority level, the user terminal may set the first parameter value of the Backoff parameter as the value indicated in the subheader.
It should be understood that the above parameter value may indicate a specific range value of the backoff range, or may indicate only the maximum value of the backoff range, and in order to reduce resource waste, it is preferable that the minimum value of the backoff range is a default value of 0, and the above parameter value is used to indicate the maximum backoff value (i.e., the maximum value of the backoff range).
In this embodiment, the network side device selects the maximum value of the backoff range according to the set parameter, and indicates the maximum value through the parameter value, and at this time, after receiving the parameter value, the user terminal sets the parameter value as the value of the backoff parameter. For example, the maximum backoff value indicated by the parameter value is 128ms, the user terminal sets the value of the backoff parameter to 128 ms.
In this way, in the embodiment of the present invention, a preamble of a preamble sequence code sent by a user terminal for a random access attempt is received; determining a backspacing range according to the set parameters corresponding to the random access attempt, wherein the backspacing range is used for the user terminal to select a backspacing value of the next random access attempt when the random access fails; and sending a Random Access Response (RAR) message to the user terminal according to the leader sequence code, wherein the RAR message carries a parameter value for indicating the backoff range. The backspacing range is determined according to the setting parameters corresponding to the random access attempt, so that different backspacing ranges are configured for different random accesses, the flexibility of configuration of the backspacing ranges is improved, and different delay performances can be achieved for different random access configurations.
It should be noted that the random access attempt may be a contention random access or a non-contention random access. When the random access attempt is the contention random access, after the step 403, the method further includes:
receiving a competition resolving request sent by a user terminal;
in this step, the ue sends uplink transmission on the UL grant specified by the RAR message, where the contents of the contention resolution request uplink transmission for different random access reasons are different, for example, for initial access, the contention resolution request is transmitted by an RRC connection establishment request.
And sending a competition resolving response to the user equipment according to the competition resolving request, wherein the competition resolving response is used for indicating whether the random access of the user terminal is successful or not.
In this step, the ue may determine whether the random access attempt is successful according to the contention resolution response. If the random access attempt is successful, a random access process is completed, and if the random access attempt fails, the next random access attempt is performed after delaying for a certain time according to the backoff value.
In the random access process, if the current random access attempt fails, the user terminal delays the next random access attempt according to the backoff value selected by the first parameter value of the backoff parameter, for example, the backoff value is 50ms, and when it is determined that the access fails, the user terminal delays for 50ms and then performs the next random access attempt.
Referring to fig. 5, fig. 5 is a structural diagram of a user equipment according to an embodiment of the present invention, which can implement details of a processing method of random access in the foregoing embodiment and achieve the same effect. As shown in fig. 5, the user terminal includes:
a selecting module 501, configured to select a backoff value of a next random access attempt according to a backoff range corresponding to random access if the random access attempt fails, where the backoff range is a range value determined according to a setting parameter corresponding to the current random access attempt;
a processing module 502, configured to delay a next random access attempt according to the backoff value.
Optionally, the user terminal further includes:
the signal sending module is used for sending a preamble of a leader sequence code to the network side equipment;
a first receiving module, configured to receive a random access response RAR message sent by a network side device according to the preamble sequence code, where the RAR message carries a parameter value, and the parameter value is used to determine the backoff range.
Optionally, the user terminal further includes:
a request sending module, configured to send a contention resolution request to a network side device;
and a second receiving module, configured to receive a contention resolution response sent by the network side device according to the contention resolution request, where the contention resolution response is used to indicate whether the random access of the user terminal is successful.
Optionally, the parameter value is used to indicate a maximum backoff value.
Optionally, the parameter value is a value determined by the network side device according to the setting parameter, and the user terminal further includes:
a first configuration module, configured to set a maximum backoff value indicated by the parameter value to a maximum value of the backoff range, where the minimum value of the backoff range is a default value of 0.
Optionally, the user terminal further includes:
and the second configuration module is configured to set the maximum backoff value indicated by the parameter value as the maximum value of the backoff range after scaling the maximum backoff value according to a target scaling ratio or superimposing the maximum backoff value according to a target offset, where the minimum value of the backoff range is a default value of 0.
Optionally, the target scaling is a scaling value determined according to the setting parameter.
Optionally, the target offset is an offset determined according to the setting parameter.
Optionally, the set parameter includes a baseband parameter numerology used in the random access process, a service corresponding to the random access, a priority of the service corresponding to the random access, or a service-related requirement.
In this way, in the embodiment of the present invention, if the random access attempt fails, the backoff value of the next random access attempt is selected according to the backoff range corresponding to the random access, where the backoff range is a range value determined according to the setting parameter corresponding to the current random access attempt; and delaying the next random access attempt according to the back-off value. The backspacing range is determined according to the setting parameters corresponding to the random access attempt, so that different backspacing ranges are configured for different random accesses, the flexibility of configuration of the backspacing ranges is improved, and different delay performances can be achieved for different random access configurations.
Referring to fig. 6, fig. 6 is a structural diagram of a network side device according to an embodiment of the present invention, which can implement details of a processing method of random access in the foregoing embodiment and achieve the same effect. As shown in fig. 6, the network side device includes:
a signal receiving module 601, configured to receive a preamble of a preamble sequence code sent by a user equipment for a random access attempt;
a determining module 602, configured to determine a backoff range according to a setting parameter corresponding to the current random access attempt, where the backoff range is used for a user terminal to select a backoff value of a next random access attempt when the current random access fails;
a first sending module 603, configured to send a random access response RAR message to the user terminal according to the preamble sequence code, where the RAR message carries a parameter value for indicating the backoff range.
Optionally, the network side device further includes:
a request receiving module, configured to receive a contention resolution request sent by a user terminal;
and a second sending module, configured to send a contention resolution response to the ue according to the contention resolution request, where the contention resolution response is used to indicate whether the random access of the ue is successful.
Optionally, the set parameter includes a baseband parameter numerology used in the random access process, a service corresponding to the random access, a priority of the service corresponding to the random access, or a service-related requirement.
Optionally, the parameter value is used to indicate a maximum backoff value of the backoff range, and a minimum value of the backoff range is a default value of 0.
In this way, in the embodiment of the present invention, a preamble of a preamble sequence code sent by a user terminal for a random access attempt is received; determining a backspacing range according to the set parameters corresponding to the random access attempt, wherein the backspacing range is used for the user terminal to select a backspacing value of the next random access attempt when the random access fails; and sending a Random Access Response (RAR) message to the user terminal according to the leader sequence code, wherein the RAR message carries a parameter value for indicating the backoff range. The backspacing range is determined according to the setting parameters corresponding to the random access attempt, so that different backspacing ranges are configured for different random accesses, the flexibility of configuration of the backspacing ranges is improved, and different delay performances can be achieved for different random access configurations.
Referring to fig. 7, fig. 7 is a structural diagram of a user equipment according to an embodiment of the present invention, which can implement details of a processing method of random access in the foregoing embodiment and achieve the same effect. As shown in fig. 7, the user terminal 700 includes: at least one processor 701, a memory 702, at least one network interface 704, and a user interface 703. The various components in the user terminal 700 are coupled together by a bus system 705. It is understood that the bus system 705 is used to enable communications among the components. The bus system 705 includes a power bus, a control bus, and a status signal bus in addition to a data bus. But for clarity of illustration the various busses are labeled in figure 7 as the bus system 705.
The user interface 703 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, track ball, touch pad, or touch screen, etc.).
It is to be understood that the memory 702 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of illustration and not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (ddr Data Rate SDRAM, ddr SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DRRAM). The memory 702 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
In some embodiments, memory 702 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof: an operating system 7021 and application programs 7022.
The operating system 7021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, for implementing various basic services and processing hardware-based tasks. The application 7022 includes various applications, such as a Media Player (Media Player), a Browser (Browser), and the like, for implementing various application services. Programs that implement methods in accordance with embodiments of the present invention can be included within application program 7022.
In the embodiment of the present invention, the user terminal further includes: a computer program stored on the memory 702 and executable on the processor 701, in particular a computer program in the application 7022, which computer program, when executed by the processor 701, performs the steps of: if the random access attempt fails, selecting a backoff value of the next random access attempt according to a backoff range corresponding to the random access, wherein the backoff range is a range value determined according to a set parameter corresponding to the current random access attempt; and delaying the next random access attempt according to the back-off value.
The method disclosed in the above embodiments of the present invention may be applied to the processor 701, or implemented by the processor 701. The processor 701 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in the form of software in the processor 701. The Processor 701 may be a general-purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable gate array (FPGA) or other Programmable logic device, discrete gate or transistor logic device, or discrete hardware components. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in the memory 702, and the processor 701 reads the information in the memory 702 and performs the steps of the above method in combination with the hardware thereof.
It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the Processing units may be implemented within one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), general purpose processors, controllers, micro-controllers, microprocessors, other electronic units configured to perform the functions described herein, or a combination thereof.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.
Optionally, the computer program may further implement the following steps when executed by the processor 701: sending preamble sequence codes to network side equipment; and receiving a Random Access Response (RAR) message sent by the network side equipment according to the preamble sequence code, wherein the RAR message carries a parameter value, and the parameter value is used for determining the backoff range.
Optionally, the computer program may further implement the following steps when executed by the processor 701: sending a competition resolving request to network side equipment; and receiving a competition resolving response sent by the network side equipment according to the competition resolving request, wherein the competition resolving response is used for indicating whether the random access of the user terminal is successful or not.
Optionally, the parameter value is used to indicate a maximum backoff value.
Optionally, the parameter value is a value determined by the network side device according to the setting parameter, and when executed by the processor 701, the computer program may further implement the following steps:
setting the maximum backspacing value indicated by the parameter value as the maximum value of the backspacing range, wherein the minimum value of the backspacing range is a default value of 0.
Optionally, the computer program may further implement the following steps when executed by the processor 701: and after the maximum backspacing value indicated by the parameter value is zoomed according to a target zoom ratio or is superposed according to a target offset, the maximum backspacing value is set as the maximum value of the backspacing range, and the minimum value of the backspacing range is a default value 0.
Optionally, the target scaling is a scaling value determined according to the setting parameter.
Optionally, the target offset is an offset determined according to the setting parameter.
Optionally, the set parameter includes a baseband parameter numerology used in the random access process, a priority corresponding to random access, a reason for random access, a service corresponding to random access, a priority of a service corresponding to random access, or a service-related requirement.
In this way, in the embodiment of the present invention, if the random access attempt fails, the backoff value of the next random access attempt is selected according to the backoff range corresponding to the random access, where the backoff range is a range value determined according to the setting parameter corresponding to the current random access attempt; and delaying the next random access attempt according to the back-off value. The backspacing range is determined according to the setting parameters corresponding to the random access attempt, so that different backspacing ranges are configured for different random accesses, the flexibility of configuration of the backspacing ranges is improved, and different delay performances can be achieved for different random access configurations.
Referring to fig. 8, fig. 8 is a structural diagram of a network device according to an embodiment of the present invention, which is capable of implementing details of a processing method of random access in the foregoing embodiment and achieving the same effect. As shown in fig. 8, the network-side device 800 includes: a processor 801, a transceiver 802, a memory 803, a user interface 804 and a bus interface, wherein:
a processor 801 for reading the program in the memory 803, and executing the following processes: receiving a preamble of a leader sequence code sent by a random access attempt of a user terminal; determining a backspacing range according to the set parameters corresponding to the random access attempt, wherein the backspacing range is used for the user terminal to select a backspacing value of the next random access attempt when the random access fails; and sending a Random Access Response (RAR) message to the user terminal according to the leader sequence code, wherein the RAR message carries a parameter value for indicating the backoff range.
In FIG. 8, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 801, and various circuits, represented by the memory 803, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 802 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 804 may also be an interface capable of interfacing with a desired device for different user devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 in performing operations.
Optionally, the computer program when executed by the processor 801 may further implement the steps of:
receiving a competition resolving request sent by a user terminal;
and sending a competition resolving response to the user equipment according to the competition resolving request, wherein the competition resolving response is used for indicating whether the random access of the user terminal is successful or not.
Optionally, the set parameter includes a baseband parameter numerology used in the random access process, a service corresponding to the random access, a priority of the service corresponding to the random access, or a service-related requirement.
Optionally, the parameter value is used to indicate a maximum backoff value of the backoff range, and a minimum value of the backoff range is a default value of 0.
In this way, in the embodiment of the present invention, a preamble of a preamble sequence code sent by a user terminal for a random access attempt is received; determining a backspacing range according to the set parameters corresponding to the random access attempt, wherein the backspacing range is used for the user terminal to select a backspacing value of the next random access attempt when the random access fails; and sending a Random Access Response (RAR) message to the user terminal according to the leader sequence code, wherein the RAR message carries a parameter value for indicating the backoff range. The backspacing range is determined according to the setting parameters corresponding to the random access attempt, so that different backspacing ranges are configured for different random accesses, the flexibility of configuration of the backspacing ranges is improved, and different delay performances can be achieved for different random access configurations.
Embodiments of the present invention further 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 processing method for random access in any of the above method embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a removable hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (30)
1. A processing method of random access is applied to a user terminal, and is characterized by comprising the following steps:
if the random access attempt fails, selecting a backoff value of the next random access attempt according to a backoff range corresponding to the random access, wherein the backoff range is a range value determined according to a set parameter corresponding to the current random access attempt;
delaying a next random access attempt according to the backoff value;
the setting parameter includes a baseband parameter numerology adopted in a random access process.
2. The method of claim 1, wherein before the step of selecting the backoff value for the next random access attempt if the random access attempt fails, the method further comprises:
sending preamble sequence codes to network side equipment;
and receiving a Random Access Response (RAR) message sent by the network side equipment according to the preamble sequence code, wherein the RAR message carries a parameter value, and the parameter value is used for determining the backoff range.
3. The method according to claim 2, wherein after the step of receiving a Random Access Response (RAR) message sent by the network side device according to the preamble sequence code, and before the step of selecting a backoff value for a next random access attempt according to a backoff range corresponding to random access, the method further comprises:
sending a competition resolving request to network side equipment;
and receiving a competition resolving response sent by the network side equipment according to the competition resolving request, wherein the competition resolving response is used for indicating whether the random access of the user terminal is successful or not.
4. The method of claim 2, wherein the parameter value is used to indicate a maximum backoff value.
5. The method according to claim 4, wherein the parameter value is a value determined by a network-side device according to the setting parameter, and after the step of receiving a Random Access Response (RAR) message sent by the network-side device according to the preamble sequence code, the method further comprises:
setting the maximum backspacing value indicated by the parameter value as the maximum value of the backspacing range, wherein the minimum value of the backspacing range is a default value of 0.
6. The method according to claim 4, wherein after the step of receiving a Random Access Response (RAR) message sent by the network side device according to the preamble code, the method further comprises:
and after the maximum backspacing value indicated by the parameter value is zoomed according to a target zoom ratio or is superposed according to a target offset, the maximum backspacing value is set as the maximum value of the backspacing range, and the minimum value of the backspacing range is a default value 0.
7. The method of claim 6, wherein the target scaling is a scaling value determined according to the setting parameter.
8. The method of claim 6, wherein the target offset is an offset determined according to the setting parameter.
9. The method of claim 1, wherein the setting parameters further include a service corresponding to random access, a priority of the service corresponding to random access, a reason for random access, or a service-related requirement.
10. A processing method of random access is applied to network side equipment, and is characterized by comprising the following steps:
receiving a preamble of a leader sequence code sent by a random access attempt of a user terminal;
determining a backspacing range according to a set parameter corresponding to the random access attempt, wherein the backspacing range is used for a user terminal to select a backspacing value of the next random access attempt when the random access fails;
sending a Random Access Response (RAR) message to the user terminal according to the leader sequence code, wherein the RAR message carries a parameter value for indicating the rollback range;
the setting parameter includes a baseband parameter numerology adopted in a random access process.
11. The method according to claim 10, wherein after the step of sending a random access response, RAR, message to the user terminal according to the preamble code, the method further comprises:
receiving a competition resolving request sent by a user terminal;
and sending a competition resolving response to the user equipment according to the competition resolving request, wherein the competition resolving response is used for indicating whether the random access of the user terminal is successful or not.
12. The method of claim 11, wherein the setting parameters further include a service corresponding to random access, a priority corresponding to random access, or a service-related requirement.
13. The method of claim 12, wherein the parameter value is used to indicate a maximum backoff value of the backoff range, and wherein a minimum value of the backoff range is a default value of 0.
14. A user terminal, comprising:
a selecting module, configured to select a backoff value of a next random access attempt according to a backoff range corresponding to random access if the random access attempt fails, where the backoff range is a range value determined according to a setting parameter corresponding to the current random access attempt;
a processing module, configured to delay a next random access attempt according to the backoff value;
the setting parameter includes a baseband parameter numerology adopted in a random access process.
15. The ue of claim 14, wherein the ue further comprises:
the signal sending module is used for sending a preamble of a leader sequence code to the network side equipment;
a first receiving module, configured to receive a random access response RAR message sent by a network side device according to the preamble sequence code, where the RAR message carries a parameter value, and the parameter value is used to determine the backoff range.
16. The ue of claim 15, wherein the ue further comprises:
a request sending module, configured to send a contention resolution request to a network side device;
and a second receiving module, configured to receive a contention resolution response sent by the network side device according to the contention resolution request, where the contention resolution response is used to indicate whether the random access of the user terminal is successful.
17. The ue of claim 15, wherein the parameter value is used to indicate a maximum backoff value.
18. The ue of claim 17, wherein the parameter value is a value determined by the network-side device according to the setting parameter, and the ue further comprises:
a first configuration module, configured to set a maximum backoff value indicated by the parameter value to a maximum value of the backoff range, where the minimum value of the backoff range is a default value of 0.
19. The ue of claim 17, wherein the ue further comprises:
and the second configuration module is configured to set the maximum backoff value indicated by the parameter value as the maximum value of the backoff range after scaling the maximum backoff value according to a target scaling ratio or superimposing the maximum backoff value according to a target offset, where the minimum value of the backoff range is a default value of 0.
20. The ue of claim 19, wherein the target scaling is a scaling value determined according to the setting parameter.
21. The ue of claim 19, wherein the target offset is an offset determined according to the setting parameter.
22. The ue of claim 14, wherein the setting parameter further includes a service corresponding to random access, a priority of a service corresponding to random access, a reason for random access, or a service-related requirement.
23. A network-side device, comprising:
the signal receiving module is used for receiving a preamble of a leader sequence code sent by a random access attempt of a user terminal;
a determining module, configured to determine a backoff range according to a setting parameter corresponding to the current random access attempt, where the backoff range is used for a user terminal to select a backoff value of a next random access attempt when the current random access fails;
a first sending module, configured to send a random access response RAR message to a user terminal according to the preamble sequence code, where the RAR message carries a parameter value for indicating the backoff range;
the setting parameter includes a baseband parameter numerology adopted in a random access process.
24. The network-side device of claim 23, wherein the network-side device further comprises:
a request receiving module, configured to receive a contention resolution request sent by a user terminal;
and a second sending module, configured to send a contention resolution response to the ue according to the contention resolution request, where the contention resolution response is used to indicate whether the random access of the ue is successful.
25. The network-side device of claim 23, wherein the setting parameter further includes a service corresponding to random access, a priority of a service corresponding to random access, or a service-related requirement.
26. The network-side device of claim 23, wherein the parameter value is used to indicate a maximum backoff value of the backoff range, and a minimum value of the backoff range is a default value of 0.
27. A user terminal, comprising:
one or more processors;
a memory; and
one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, wherein the programs when executed implement the steps in the method for handling random access of any of claims 1-9.
28. A network-side device, comprising:
one or more processors;
a memory; and
one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, wherein the programs when executed implement the steps in the method for handling random access of any of claims 10-13.
29. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for handling random access of any one of claims 1 to 9.
30. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method for handling random access of any one of claims 10 to 13.
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| US20200329504A1 (en) * | 2019-04-11 | 2020-10-15 | Mediatek Singapore Pte. Ltd. | MsgB Format In Two-Step Random Access In Mobile Communications |
| CN111867125B (en) * | 2019-04-29 | 2022-12-06 | 华为技术有限公司 | Random access method and device |
| CN110839250B (en) * | 2019-11-01 | 2023-02-14 | Oppo（重庆）智能科技有限公司 | GSM random access method and related product |
| WO2022205223A1 (en) * | 2021-03-31 | 2022-10-06 | Oppo广东移动通信有限公司 | Random access method, electronic device, and storage medium |
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