CN112118634B - Communication method, device, system, base station and terminal - Google Patents
Communication method, device, system, base station and terminal Download PDFInfo
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- CN112118634B CN112118634B CN201910535143.5A CN201910535143A CN112118634B CN 112118634 B CN112118634 B CN 112118634B CN 201910535143 A CN201910535143 A CN 201910535143A CN 112118634 B CN112118634 B CN 112118634B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/002—Transmission of channel access control information
- H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access, e.g. scheduled or random access
- H04W74/08—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access]
- H04W74/0833—Non-scheduled or contention based access, e.g. random access, ALOHA, CSMA [Carrier Sense Multiple Access] using a random access procedure
Abstract
The disclosure relates to a communication method, a communication device, a communication system, a base station and a terminal, and relates to the technical field of communication. The method of the present disclosure comprises: the base station determines an uplink carrier frequency and a preamble sequence group corresponding to the terminal according to the user category corresponding to the terminal; the base station sends access configuration information to the terminal, wherein the access configuration information comprises: an uplink carrier frequency and a preamble sequence group corresponding to the terminal; the base station receives a leader sequence sent by the terminal on an uplink carrier frequency to carry out a random access process, and the leader sequence is selected from a leader sequence group.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a communication method, apparatus, system, base station, and terminal.
Background
In a 5G (also referred to as NR (New Radio, new air interface)) system, a random access process of a terminal is similar to that of LTE, and is divided into competitive random access and non-competitive random access.
In the existing NR contention random access, a terminal randomly selects and uses a Preamble (Preamble sequence) according to a certain requirement. Due to the limited number of preambles, in a scenario where there are many Access terminals, for 1 PRACH (Physical Random Access Channel) resource, there may exist a plurality of terminals selecting one same Preamble, which may cause sequence collision and Access failure. And after the terminal fails to send the Preamble, the terminal sends the Preamble again for random access.
Disclosure of Invention
The inventor finds that: after the terminal fails to send the Preamble, no network side access control strategy is applied to the terminal, and the terminal can send the Preamble again, so that continuous Preamble collision and access failure are caused, and the service experience of a user is seriously influenced.
One technical problem to be solved by the present disclosure is: how to improve the success rate of random access of the terminal.
According to some embodiments of the present disclosure, there is provided a communication method including: the base station determines an uplink carrier frequency and a preamble sequence group corresponding to the terminal according to the user category corresponding to the terminal; the base station sends access configuration information to the terminal, wherein the access configuration information comprises: an uplink carrier frequency and a preamble sequence group corresponding to the terminal; the base station receives a leader sequence sent by the terminal on an uplink carrier frequency to carry out a random access process, and the leader sequence is selected from a leader sequence group.
In some embodiments, the method further comprises: the base station determines the time length of a timer of a preamble sequence group corresponding to the terminal according to the user category; the access configuration information further includes: a timer duration; the base station receiving terminal sends the leader sequence on the uplink carrier frequency, which comprises: and the base station receives the leader sequence sent by the terminal on the uplink carrier frequency within the time length of the timer.
In some embodiments, the priorities corresponding to different categories are different, and the higher the priority corresponding to the user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is; and different types of terminals using the same uplink carrier frequency have different corresponding preamble sequence groups.
In some embodiments, the method further comprises: the base station receives user attribute information corresponding to a terminal sent by a core network, wherein the user attribute information comprises: at least one of subscription information and a slice type of the terminal; and the base station determines the user type according to the user attribute information corresponding to the terminal.
In some embodiments, the determining, by the base station, the uplink carrier frequency and preamble sequence group corresponding to the terminal according to the user class includes: under the condition that the access load of the first carrier frequency is higher than a load threshold value, the base station determines a second carrier frequency and a preamble sequence group corresponding to the terminal according to the user class; the base station receiving terminal sends the leader sequence on the uplink carrier frequency, which comprises: the base station receives a preamble sequence transmitted on a second carrier frequency from a terminal residing on a first carrier frequency.
According to further embodiments of the present disclosure, there is provided a communication method including: the terminal receives access configuration information sent by a base station, wherein the access configuration information comprises: an uplink carrier frequency and a preamble sequence group corresponding to the terminal; the uplink carrier frequency and the preamble sequence group are determined according to the user category corresponding to the terminal; the terminal selects a leader sequence from the leader sequence group; the terminal sends a leader sequence to the base station on the uplink carrier frequency to carry out a random access process.
In some embodiments, the access configuration information further comprises: the time length of a timer of a preamble sequence group corresponding to the terminal; the terminal sends the leader sequence to the base station on the uplink carrier frequency, and the method comprises the following steps: the terminal sends a preamble sequence to the base station on the uplink carrier frequency within the time length of the timer.
In some embodiments, the priorities corresponding to different categories are different, and the higher the priority corresponding to the user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is; and different types of terminals using the same uplink carrier frequency have different corresponding preamble sequence groups.
In some embodiments, the user category is determined according to user attribute information corresponding to the terminal; the attribute information includes: at least one of subscription information and slice type of the terminal.
In some embodiments, when the access load of the first carrier frequency is higher than a load threshold, determining a second carrier frequency and a preamble sequence group corresponding to the terminal according to the user class; the terminal sends the leader sequence to the base station on the uplink carrier frequency, and the method comprises the following steps: the terminal resides on the first carrier frequency, and transmits the preamble sequence to the base station on the second carrier frequency.
According to still other embodiments of the present disclosure, there is provided a base station including: the access configuration determining module is used for determining an uplink carrier frequency and a preamble sequence group corresponding to the terminal according to the user category corresponding to the terminal; an information sending module, configured to send access configuration information to a terminal, where the access configuration information includes: an uplink carrier frequency and a preamble sequence group corresponding to the terminal; and the random access module is used for receiving a leader sequence sent by the terminal on the uplink carrier frequency so as to carry out a random access process, and the leader sequence is selected from a leader sequence group.
In some embodiments, the access configuration determining module is further configured to determine, according to the user category, a timer duration of a preamble sequence group corresponding to the terminal; the access configuration information further includes: a timer duration; the random access module is used for receiving a leader sequence sent by the terminal on the uplink carrier frequency within the time length of the timer.
In some embodiments, the priorities corresponding to different categories are different, and the higher the priority corresponding to the user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is; and different types of terminals using the same uplink carrier frequency have different corresponding preamble sequence groups.
In some embodiments, the base station further comprises: an information receiving module, configured to receive user attribute information corresponding to a terminal sent by a core network, where the user attribute information includes: at least one of subscription information and a slice type of the terminal; and the category determining module is used for determining the user category according to the user attribute information corresponding to the terminal.
In some embodiments, the access configuration determining module is configured to determine, according to the user class, a second carrier frequency and a preamble sequence group corresponding to the terminal when the access load of the first carrier frequency is higher than a load threshold; the random access module is used for receiving a preamble sequence sent by a terminal residing on a first carrier frequency and on a second carrier frequency.
According to still further embodiments of the present disclosure, there is provided a terminal including: an information receiving module, configured to receive access configuration information sent by a base station, where the access configuration information includes: an uplink carrier frequency and a preamble sequence group corresponding to the terminal; the uplink carrier frequency and the preamble sequence group are determined according to the user category corresponding to the terminal; the leader selecting module is used for selecting a leader sequence from the leader sequence group; and the random access initiating module is used for sending a leader sequence to the base station on the uplink carrier frequency so as to carry out a random access process.
In some embodiments, the access configuration information further comprises: the time length of a timer of a leader sequence group corresponding to the terminal; the random access initiating module is used for sending a leader sequence to the base station on the uplink carrier frequency within the time length of the timer.
In some embodiments, the priorities corresponding to different categories are different, and the higher the priority corresponding to a user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is; and different types of terminals using the same uplink carrier frequency have different corresponding preamble sequence groups.
In some embodiments, the user category is determined according to user attribute information corresponding to the terminal; the attribute information includes: at least one of subscription information and slice type of the terminal.
In some embodiments, when the access load of the first carrier frequency is higher than a load threshold, determining a second carrier frequency and a preamble sequence group corresponding to the terminal according to the user class; the random access initiating module is used for residing on the first carrier frequency and transmitting a preamble sequence to the base station on the second carrier frequency.
According to still other embodiments of the present disclosure, there is provided a communication apparatus including: a memory; and a processor coupled to the memory, the processor configured to perform the communication method of any of the preceding embodiments based on instructions stored in the memory.
According to still further embodiments of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program, wherein the program, when executed by a processor, implements the communication method of any of the preceding embodiments.
According to still further embodiments of the present disclosure, there is provided a communication system including: a base station of any of the preceding embodiments and a terminal of any of the preceding embodiments.
In the method, the users corresponding to the terminals are divided into different categories, the base station allocates the uplink carrier frequency and the preamble sequence group aiming at the terminals of different user categories, so that the terminals of different user categories can initiate random access processes on different uplink carrier frequencies, the collision probability of the preamble sequences is reduced, the success rate of random access is improved, the terminals of different categories select the preamble sequences from different preamble sequence groups, the collision probability of the preamble sequences selected by the terminals on the same carrier frequency is avoided, and the success rate of random access is further improved.
Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 illustrates a flow diagram of a communication method of some embodiments of the present disclosure.
Fig. 2 shows a flow diagram of a communication method of further embodiments of the present disclosure.
Fig. 3 shows a schematic structural diagram of a base station of some embodiments of the present disclosure.
Fig. 4 illustrates a structural schematic of a terminal of some embodiments of the present disclosure.
Fig. 5 illustrates a schematic structural diagram of a communication device of some embodiments of the present disclosure.
Fig. 6 shows a schematic structural diagram of a communication device of further embodiments of the present disclosure.
Fig. 7 illustrates a structural schematic diagram of a communication system of some embodiments of the present disclosure.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.
The scheme is provided for solving the problem that the terminal continuous access fails due to the fact that the number of preambles is limited and the repeated occurrence of Preamble collisions of the terminal is easily caused in a scene with a large number of access terminals. Some embodiments of the disclosed communication method are described below in conjunction with fig. 1.
Fig. 1 is a flow chart of some embodiments of the disclosed communication method. As shown in fig. 1, the method of this embodiment includes: steps S102 to S108.
In step S102, the base station determines an uplink carrier frequency and a preamble sequence group corresponding to the terminal according to the user class corresponding to the terminal. The user category may represent the category of the terminal.
In some embodiments, the base station determines the user category according to the user attribute information corresponding to the terminal. The user attribute information corresponding to the terminal includes, for example: at least one of subscription information and slice type of the terminal. Terminals of different user categories may correspond to different priorities, i.e., terminals may be classified according to priority based on slice type or subscription information. The subscription information of the terminal may indicate, for example, whether the user is an industrial user or other high-priority user, or whether the user is a general user, or the like. Different types of slices can correspond to different applications, and the like, and the shorter the delay required by an application or the higher the reliability, the higher the corresponding priority.
Under the condition that users of the terminal are classified according to the slice types or the subscription information of the terminal, slice type values corresponding to different slice types can be preset, and the higher the priority of the slice type is, the higher the corresponding slice type value is. Further, subscription type values corresponding to subscription information of different terminals may be preset, and the higher the user level is, the higher the corresponding subscription type value is. And weighting the slice type value and the subscription type value of the terminal to be used as the priority value of the user. And further, classifying the users according to the priority values of the users. For example, priority thresholds corresponding to different categories may be set, and the user may be determined to which category the user belongs by comparing the priority value of the user with the different priority thresholds.
The base station side prestores the corresponding relations between the terminals of different categories and the uplink carrier frequency and the Preamble group, and then the uplink carrier frequency and the Preamble group of the terminal can be determined according to the user category. In some embodiments, the higher the priority corresponding to the user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is, and the lower the frequency of the uplink carrier frequency is, the wider the coverage is, so that the access success rate of the terminal with high priority is higher. The uplink carrier frequency corresponding to the base station may be a Supplemental Uplink (SUL) carrier frequency. The high priority terminal preferentially allocates the SUL carrier frequency.
For example, in the NR base station, users of the terminal are classified according to priority levels according to the type of the slice or subscription information, and different uplink carrier frequencies and Preamble groups are configured in different classes. For example:
class 1: f1, preamble 1. About.n
Class 2: f1, preamble n + 1-m
Class 3: … …
Category 4: f2, preamble 1. A
Class 5: f2, preamble a + 1. B
Category 6: … …
The F1 and the F2 represent different carrier frequencies, the Preamble groups corresponding to different types of terminals on the same carrier frequency are different, and the Preamble groups corresponding to terminals on different carrier frequencies may be different or the same. The number of the preambles in different Preamble groups can be the same or different, and the settings are according to actual requirements.
In some embodiments, the user classes may be dynamically adjusted according to the number of terminals currently prepared for random access in the different classes. For example, a first category to which the terminal belongs is determined according to user attribute information corresponding to the terminal, the number of terminals currently prepared for random access in the first category is greater than a first preset value (for example, the preset value is equal to the number of preambles in a Preamble group corresponding to the first category), the user category is modified into a second category, and the number of terminals currently prepared for random access in the second category is less than the second preset value. And under the condition that the number of the terminals which are currently prepared for random access in all the categories is larger than the preset value corresponding to the category, not performing category adjustment. Whether the terminal is ready for random access may be determined according to whether the terminal is currently in a Radio Resource Control (RRC) connection state or initiates an RRC connection request, and the like, which is not limited to the examples.
In some embodiments, the base station may determine whether to trigger a process of determining an uplink carrier frequency and a preamble sequence group corresponding to the terminal according to the user class and allocating different uplink carrier frequencies and preamble sequence groups to the terminal according to the access load condition. For example, when the access load of the first carrier frequency corresponding to the base station (for example, the first carrier frequency is a carrier frequency with a frequency higher than the threshold, and may be an NR carrier frequency with a high frequency and a high bandwidth) is higher than the load threshold, the base station determines the uplink carrier frequency and the preamble sequence group corresponding to each terminal according to each user category. That is, initially, each terminal may use the first carrier frequency as a carrier frequency for uplink and downlink transmission, and when an access load of the first carrier frequency is higher than a load threshold, the base station may allocate other carrier frequencies (for example, SUL carrier frequencies) to some terminals as uplink carrier frequencies, so that each subsequent terminal performs uplink competitive random access at different carrier frequencies, and the access efficiency is improved.
The terminal may also be classified in other manners, which are not limited to the examples, and the purpose of classification is mainly to subsequently allocate different carrier frequencies, preamble sequence groups, and the like to the terminal. The terminals are classified according to the subscription information and/or the slice types of the terminals, and the access success rate of the high-priority users can be guaranteed in a follow-up priority mode.
In step S104, the base station sends access configuration information to the terminal, and accordingly, the terminal receives the access configuration information sent by the base station. The access configuration information includes: and the uplink carrier frequency and the preamble sequence group corresponding to the terminal.
In some embodiments, the access configuration information is carried within a radio resource control Connection Release (RRC Connection Release) message. The base station may also send the access configuration information to the terminal through other messages before the terminal performs the contention random access, which is not limited to the illustrated example.
In step S106, the terminal selects a preamble sequence from the set of preamble sequences.
The terminal may randomly select a preamble sequence from the preamble sequence group, or may select the preamble sequence according to a preset selection rule, where the selection rule may be set according to an actual requirement, for example, a repeated preamble sequence cannot be selected within a preset time, and the terminal is not limited to the example.
In step S108, the terminal sends the selected preamble sequence to the base station on the uplink carrier frequency, and correspondingly, the base station receives the selected preamble sequence sent by the terminal on the uplink carrier frequency.
In some embodiments, under the condition that the access load of the first carrier frequency in which the terminal currently resides is higher than a load threshold, the base station determines a second carrier frequency and a preamble sequence group corresponding to the terminal according to the user class; the terminal resides in the first carrier frequency and transmits the selected preamble sequence to the base station on the second carrier frequency. The user category is, for example, a category with a priority higher than a preset priority, and the second carrier frequency may be lower in frequency than the first carrier frequency. That is, in combination with the condition that the base station allocates different uplink carrier frequencies and preamble sequence groups to the terminal according to the access load condition as a trigger, the terminal with high priority may use the first carrier frequency as the downlink carrier frequency and the second carrier frequency as the uplink carrier frequency. The second carrier frequency may include one or more carrier frequencies, and the higher priority terminal corresponds to a lower frequency of the second carrier frequency.
In the method of the embodiment, the terminals are divided into different categories, the base station allocates the uplink carrier frequency and the preamble sequence group to the terminals of different categories, so that the terminals of different categories can initiate random access processes on different uplink carrier frequencies, the collision probability of the preamble sequences is reduced, the success rate of random access is improved, and the terminals of different categories select the preamble sequences from different preamble sequence groups, thereby avoiding the collision probability of the preamble sequences selected by the terminals on the same carrier frequency and further improving the success rate of random access. In addition, the base station may trigger a process of determining corresponding uplink carrier frequencies and preamble sequence groups for different types of terminals based on the load condition of the carrier frequencies, and may balance access loads on different carrier frequencies. Especially when the industrial users or the high priority users and the public users are co-resident on one carrier frequency of the NR and initiate access on one frequency, the access success rate of the industrial users or the high priority class users can be improved.
Further embodiments of the communication method of the present disclosure are described below in conjunction with fig. 2.
Fig. 2 is a flow chart of further embodiments of the communication method of the present disclosure. As shown in fig. 2, the method of this embodiment includes: steps S202 to S212.
In step S202, uplink carrier frequencies, preamble sequence groups, and timer durations corresponding to different user categories are pre-configured in the base station.
The timer duration of the preamble sequence group is set according to different categories, and the terminal can perform random access in the timer duration subsequently, so that the occupied preamble sequence can be released as soon as possible, and the subsequently accessed terminal can access smoothly. The base station may be an NR base station.
For example, in the NR base station, the terminals are classified according to the type of the slice or subscription information and according to priority, and different uplink carrier frequencies and Preamble groups are configured in different classes. For example:
class 1: f1, preamble 1-n, timer duration m
Class 2: f1, preamble n + 1-m, timer duration n
Class 3: … …
Class 4: f2, preamble 1-a, timer duration a
Class 5: f2, preamble a + 1-b, timer duration b
Category 6: … …
The F1 and the F2 represent different carrier frequencies, the Preamble groups corresponding to different types of terminals on the same carrier frequency are different, and the Preamble groups corresponding to terminals on different carrier frequencies may be different or the same. The number of preambles in different Preamble groups can be the same or different, and the time lengths of timers corresponding to different categories can be the same or different, and are set according to actual requirements.
In step S204, the base station receives the user attribute information corresponding to the terminal sent by the core network device.
The core network device may send the user attribute information corresponding to the terminal to the base station before the terminal completes the registration and does not release the RRC connection. The user attribute information corresponding to the terminal includes, for example: at least one of subscription information and slice type of the terminal.
In step S206, the base station determines the user category, and the corresponding uplink carrier frequency, preamble sequence group, and timer duration according to the user attribute information corresponding to the terminal.
And the base station receives the terminal attribute information sent by the core network equipment to determine the user category, and further determines the uplink carrier frequency, the preamble sequence group and the timer duration corresponding to the terminal according to the pre-stored corresponding relation.
In step S208, the base station sends access configuration information to the terminal, and accordingly, the terminal receives the access configuration information sent by the base station, where the access configuration information includes: and the uplink carrier frequency, the preamble sequence group and the timer duration corresponding to the terminal.
The base station may send the access configuration information to the terminal in an RRC connection release message when the terminal is connected and released.
In step S210, the terminal stores the access configuration information and starts a timer according to the duration of the timer.
In step S212, the terminal selects a preamble sequence from the corresponding preamble sequence group within the timer duration and sends the preamble sequence to the base station on the corresponding uplink carrier frequency, and correspondingly, the base station selects a preamble sequence from the corresponding preamble sequence group on the corresponding uplink carrier frequency within the timer duration for performing the contention random access.
In some embodiments, the base station may decide whether to trigger the above scheme according to the access load on the carrier frequency. Under the condition that the access load of a first carrier frequency (for example, the first carrier frequency is a carrier frequency with a frequency higher than a threshold value, and may be an NR carrier frequency with a high frequency and a high bandwidth) corresponding to the base station is higher than a load threshold value, the base station determines an uplink carrier frequency, a preamble sequence group, and a timer duration corresponding to each terminal according to each user category.
Some application examples are: the NR base station is provided with two carrier frequencies f1 and f2, wherein f1 is high-frequency and high-bandwidth, f2 is low-frequency and low-bandwidth, and when the access load is lower than a threshold N2, the high-priority users such as slices and ordinary users use the high-bandwidth f1 carrier frequency in uplink and downlink. When the access load of the f1 is higher than the threshold N1 (the threshold N1 is larger than the threshold N2), and the RRC Release is completed by the high-priority user, the base station sends the uplink access carrier frequency f2, the available Preamble group and the timer length corresponding to the category to which the high-priority user belongs in the RRC Connect Release message. After RRC connection is released, the user terminal resides at the f1 frequency point, and when the user terminal calls in within the time length range of the timer, one Preamble in the Preamble group is selected to access on the f2 carrier frequency with low frequency and low bandwidth, so that the access success rate of the priority user is improved.
The procedure of the terminal performing the competitive random access by using the preamble sequence belongs to the prior art, and is not described herein again.
The present disclosure also provides a base station, described below in conjunction with fig. 3.
Fig. 3 is a block diagram of some embodiments of a base station of the present disclosure. As shown in fig. 3, the base station 30 of this embodiment includes: an access configuration determining module 302, an information sending module 304 and a random access module 306.
An access configuration determining module 302, configured to determine an uplink carrier frequency and a preamble sequence group corresponding to the terminal according to the user class corresponding to the terminal.
In some embodiments, the priorities corresponding to different categories are different, and the higher the priority corresponding to the user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is; and different types of terminals using the same uplink carrier frequency have different corresponding preamble sequence groups.
An information sending module 304, configured to send access configuration information to the terminal, where the access configuration information includes: and the uplink carrier frequency and the preamble sequence group corresponding to the terminal.
A random access module 306, configured to receive a preamble sequence sent by the terminal on the uplink carrier frequency to perform a random access process, where the preamble sequence is selected from a preamble sequence group.
In some embodiments, the access configuration determining module 302 is further configured to determine a timer duration of a preamble sequence group corresponding to the terminal according to the user category; the access configuration information further includes: the timer duration. The random access module 306 is configured to receive a preamble sequence sent by the terminal on an uplink carrier frequency within the duration of the timer.
In some embodiments, the access configuration determining module 302 is configured to determine, according to the user class, a second carrier frequency and a preamble sequence group corresponding to the terminal, if the access load of the first carrier frequency is higher than the load threshold. The random access module 306 is configured to receive a preamble sequence transmitted on a second carrier frequency by a terminal residing on a first carrier frequency.
In some embodiments, the base station 30 further comprises: an information receiving module 308, configured to receive user attribute information corresponding to a terminal sent by a core network, where the attribute information includes: at least one of subscription information and slice type of the terminal. A category determining module 310, configured to determine a user category according to the user attribute information corresponding to the terminal.
The present disclosure also provides a terminal, described below in conjunction with fig. 4.
Fig. 4 is a block diagram of some embodiments of the terminal of the present disclosure. As shown in fig. 4, the terminal 40 of this embodiment includes: an information receiving module 402, a preamble selecting module 404 and a random access initiating module 406.
An information receiving module 402, configured to receive access configuration information sent by a base station, where the access configuration information includes: an uplink carrier frequency and a preamble sequence group corresponding to the terminal; the uplink carrier frequency and the preamble sequence group are determined according to the user category corresponding to the terminal.
In some embodiments, the priorities corresponding to different categories are different, and the higher the priority corresponding to a user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is; and different types of terminals using the same uplink carrier frequency have different corresponding preamble sequence groups.
In some embodiments, the user category is determined according to user attribute information corresponding to the terminal; the attribute information includes: at least one of subscription information and slice type of the terminal.
A preamble selecting module 404, configured to select a preamble sequence from the preamble sequence group.
A random access initiating module 406, configured to send a preamble sequence to the base station on the uplink carrier frequency to perform a random access process.
In some embodiments, the access configuration information further comprises: and the time length of the timer of the preamble sequence group corresponding to the terminal. The random access initiating module 406 is configured to send a preamble sequence to the base station on the uplink carrier frequency within the duration of the timer.
In some embodiments, when the access load of the first carrier frequency is higher than a load threshold, determining a second carrier frequency and a preamble sequence group corresponding to the terminal according to the user class; the random access initiating module 406 is configured to camp on a first carrier frequency, and transmit a preamble sequence to the base station on a second carrier frequency.
The communication devices, such as the base station or the terminal, in the embodiments of the present disclosure may each be implemented by various computing devices or computer systems, which are described below in conjunction with fig. 5 and 6.
Fig. 5 is a block diagram of some embodiments of a communication device of the present disclosure. As shown in fig. 5, the apparatus 50 of this embodiment includes: a memory 510 and a processor 520 coupled to the memory 510, the processor 520 configured to perform a communication method in any of the embodiments of the present disclosure based on instructions stored in the memory 510.
Fig. 6 is a block diagram of further embodiments of the communication device of the present disclosure. As shown in fig. 6, the apparatus 60 of this embodiment includes: memory 610 and processor 620 are similar to memory 510 and processor 520, respectively. Input/output interfaces 630, network interfaces 640, storage interfaces 650, etc. may also be included. These interfaces 630, 640, 650 and the connections between the memory 610 and the processor 620 may be, for example, via a bus 660. The input/output interface 630 provides a connection interface for input/output devices such as a display, a mouse, a keyboard, and a touch screen. The network interface 640 provides a connection interface for various networking devices, such as a database server or a cloud storage server. The storage interface 650 provides a connection interface for external storage devices such as an SD card and a usb disk.
The present disclosure also provides a communication system, described below in conjunction with fig. 7.
Fig. 7 is a block diagram of some embodiments of the communication system of the present disclosure. As shown in fig. 7, the system 7 of this embodiment includes: a base station 30 of any of the preceding embodiments, and a terminal 40 of any of the preceding embodiments.
As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory 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 memory 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.
The above description is only exemplary of the present disclosure and is not intended to limit the present disclosure, so that any modification, equivalent replacement, or improvement made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (15)
1. A method of communication, comprising:
a base station receives user attribute information corresponding to a terminal sent by a core network, wherein the user attribute information comprises: at least one of subscription information and a slice type of the terminal;
the base station determines the user type corresponding to the terminal according to the user attribute information corresponding to the terminal;
the base station determines an uplink carrier frequency and a preamble sequence group corresponding to the terminal according to the user category corresponding to the terminal;
the base station sends access configuration information to the terminal, wherein the access configuration information comprises: an uplink carrier frequency and a preamble sequence group corresponding to the terminal;
the base station receives a leader sequence sent by the terminal on the uplink carrier frequency to perform a competitive random access process, wherein the leader sequence is selected from the leader sequence group;
the base station determines an uplink carrier frequency and a preamble sequence group corresponding to the terminal according to the user category, wherein the determining, by the base station, the uplink carrier frequency and the preamble sequence group corresponding to the terminal comprises:
under the condition that the access load of the first carrier frequency is higher than a load threshold value, the base station determines a second carrier frequency and a preamble sequence group corresponding to the terminal according to the user class;
the receiving, by the base station, the preamble sequence sent by the terminal on the uplink carrier frequency includes:
and the base station receives the preamble sequence transmitted by the terminal residing on the first carrier frequency on the second carrier frequency.
2. The communication method of claim 1, further comprising: the base station determines the time length of a timer of a preamble sequence group corresponding to the terminal according to the user category;
the access configuration information further includes: the timer duration;
the receiving, by the base station, the preamble sequence sent by the terminal on the uplink carrier frequency includes:
and the base station receives the leader sequence sent by the terminal on the uplink carrier frequency in the time length of the timer.
3. The communication method according to claim 1,
the priorities corresponding to different user categories are different, and the higher the priority corresponding to the user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is;
and the corresponding preamble sequence groups are different by using terminals corresponding to different user categories of the same uplink carrier frequency.
4. A method of communication, comprising:
a terminal receives access configuration information sent by a base station, wherein the access configuration information comprises: an uplink carrier frequency and a preamble sequence group corresponding to the terminal; the uplink carrier frequency and the preamble sequence group are determined according to the user category corresponding to the terminal;
the terminal selects a leader sequence from the leader sequence group;
the terminal sends the leader sequence to the base station on the uplink carrier frequency to carry out a competitive random access process;
the user category is determined according to user attribute information corresponding to the terminal; the user attribute information includes: at least one of subscription information and a slice type of the terminal;
under the condition that the access load of the first carrier frequency is higher than a load threshold value, determining a second carrier frequency and a preamble sequence group corresponding to the terminal according to the user class;
the sending, by the terminal, the preamble sequence to the base station on the uplink carrier frequency includes:
the terminal resides on the first carrier frequency, and the preamble sequence is sent to the base station on the second carrier frequency.
5. The communication method according to claim 4,
the access configuration information further includes: the time length of a timer of a preamble sequence group corresponding to the terminal;
the sending, by the terminal, the preamble sequence to the base station on the uplink carrier frequency includes:
and the terminal sends the leader sequence to the base station on the uplink carrier frequency within the time length of the timer.
6. The communication method according to claim 4,
the priorities corresponding to different categories are different, and the higher the priority corresponding to the user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is;
and different types of terminals using the same uplink carrier frequency have different corresponding preamble sequence groups.
7. A base station, comprising:
an information receiving module, configured to receive user attribute information corresponding to a terminal sent by a core network, where the attribute information includes: at least one of subscription information and a slice type of the terminal;
the category determining module is used for determining the user category corresponding to the terminal according to the user attribute information corresponding to the terminal;
the access configuration determining module is used for determining an uplink carrier frequency and a preamble sequence group corresponding to the terminal according to the user category corresponding to the terminal;
an information sending module, configured to send access configuration information to the terminal, where the access configuration information includes: an uplink carrier frequency and a preamble sequence group corresponding to the terminal;
a random access module, configured to receive a preamble sequence sent by the terminal on the uplink carrier frequency to perform a competitive random access process, where the preamble sequence is selected from the preamble sequence group;
the access configuration determining module is configured to determine, according to a user category, a second carrier frequency and a preamble sequence group corresponding to the terminal when an access load of a first carrier frequency is higher than a load threshold, and the random access module is configured to receive the preamble sequence that is sent on the second carrier frequency and resides on the first carrier frequency.
8. The base station of claim 7, wherein,
the access configuration determining module is further configured to determine a timer duration of a preamble sequence group corresponding to the terminal according to the user category;
the access configuration information further comprises: the timer duration;
and the random access module is used for receiving a leader sequence sent by the terminal on the uplink carrier frequency within the time length of the timer.
9. The base station of claim 7, wherein,
the priorities corresponding to different categories are different, and the higher the priority corresponding to the user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is;
and the corresponding preamble sequence groups are different by using terminals corresponding to different user categories of the same uplink carrier frequency.
10. A terminal, comprising:
an information receiving module, configured to receive access configuration information sent by a base station, where the access configuration information includes: the uplink carrier frequency and the preamble sequence group corresponding to the terminal; the uplink carrier frequency and the preamble sequence group are determined according to the user category corresponding to the terminal;
a leader selecting module for selecting a leader sequence from the leader sequence group;
a random access initiating module, configured to send the preamble sequence to the base station on the uplink carrier frequency to perform a competitive random access process;
the user category is determined according to user attribute information corresponding to the terminal; the attribute information includes: at least one of subscription information and a slice type of the terminal;
the random access initiating module is configured to reside on the first carrier frequency, and send the preamble sequence to the base station on the second carrier frequency.
11. The terminal of claim 10, wherein,
the access configuration information further includes: the time length of a timer of the preamble sequence group corresponding to the terminal;
the random access initiating module is configured to send the preamble sequence to the base station on the uplink carrier frequency within the time duration of the timer.
12. The terminal of claim 10, wherein,
the priorities corresponding to different categories are different, and the higher the priority corresponding to the user category is, the lower the frequency of the uplink carrier frequency corresponding to the terminal is;
and different types of terminals using the same uplink carrier frequency have different corresponding preamble sequence groups.
13. A communication device, comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the communication method of any of claims 1-3 or to perform the communication method of any of claims 4-6 based on instructions stored in the memory.
14. 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 of any one of claims 1 to 3 or carries out the steps of the method of any one of claims 4 to 6.
15. A communication system, comprising: the base station of any of claims 7-9, and the terminal of any of claims 10-12.
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| CN101478780B (en) * | 2008-01-04 | 2012-07-18 | 中兴通讯股份有限公司 | Method for random access in cellular communication system |
| CN101883398A (en) * | 2009-05-07 | 2010-11-10 | 大唐移动通信设备有限公司 | Method, device and system for determining uplink carrier resource |
| CN103037441B (en) * | 2009-05-07 | 2016-07-20 | 电信科学技术研究院 | A kind of method and system determining uplink carrier resource |
| CN101998577B (en) * | 2009-08-14 | 2013-06-05 | 电信科学技术研究院 | Method, system and equipment for transmitting random access lead code |
| CN102447546B (en) * | 2010-09-30 | 2019-05-24 | 电信科学技术研究院 | A kind of transmission method and equipment of data |
| US10075979B2 (en) * | 2012-06-27 | 2018-09-11 | Lg Electronics Inc. | Method and apparatus for performing random access procedure in wireless communication system |
| CN104254135B (en) * | 2013-06-27 | 2020-03-31 | 夏普株式会社 | Base station and user equipment and method thereof |
| CN105284174A (en) * | 2013-10-28 | 2016-01-27 | 华为技术有限公司 | Random access method, random access configuration method, device and system |
| CN105072700B (en) * | 2015-07-28 | 2018-12-11 | 大唐移动通信设备有限公司 | A kind of random access and its control method and device |
| CN106550480B (en) * | 2015-09-21 | 2021-09-17 | 中兴通讯股份有限公司 | Random access method, device and system |
| EP3402289B1 (en) * | 2016-01-27 | 2020-09-16 | Huawei Technologies Co., Ltd. | Method for acquiring transmission resource and user terminal |
| TWI611715B (en) * | 2016-11-16 | 2018-01-11 | 財團法人資訊工業策進會 | Wireless device and random access method thereof for mobile communication system |
| CN106686651A (en) * | 2016-12-09 | 2017-05-17 | 南京邮电大学 | Random access control method of M2M terminal grouping based on energy state awareness |
| KR102126958B1 (en) * | 2017-03-22 | 2020-06-25 | 엘지전자 주식회사 | Method for transmitting and receiving random access preamble in wireless communication system and apparatus therefor |
| CN109842954A (en) * | 2017-11-24 | 2019-06-04 | 华为技术有限公司 | A kind of accidental access method and device |
| CN110139382B (en) * | 2018-02-09 | 2024-03-19 | 华为技术有限公司 | Random access preamble transmitting method, random access preamble receiving method and random access preamble receiving device |
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