Wireless communication system access method and device

Abstract

The invention discloses a wireless communication system access method. The method comprises the following steps: determining a coverage level of random access; in response to a target coverage level, configuration information for the target coverage level is determined, the configuration information comprises at least two values of target parameters, and the target parameters comprise any one or more of the initial target receiving power, the repetition frequency, the power step adjustment amount and the maximum access frequency of the random access preamble sequence; and determining a random access preamble sequence transmitted according to the configuration information. The invention further comprises a device for implementing the method. The problem of low random access efficiency is solved, and the method and the device are particularly suitable for an application scene of intercommunication of an NTN system and a satellite communication system.

Description

Technical Field

[0001] This application relates to the field of wireless communication technologies, and in particular, to a method and device for accessing a wireless communication system. Background Art

[0002] The satellite application industry has developed rapidly and become the dominant force in the global space industry. With the development of space technology and the significant increase in satellite applications, satellite frequency resources are becoming increasingly scarce. Deploying and expanding a mobile communication system to a non-terrestrial network (NTN) and sharing spectrum resources with other mobile satellite services will improve the utilization efficiency of wireless spectrum resources and promote the formation of an integrated ubiquitous access network in the future.

[0003] A mobile communication system sharing the spectrum resources of a satellite communication system can improve spectrum efficiency and expand the service scope of the mobile communication system. In terms of spectrum sharing, adapting to and sharing the idle frequency resources of a satellite communication system can be achieved through time division, space division, or other means. Currently, the frequency range of 1613.8 - 1626.5 MHz is allocated to satellite communication systems in time-division duplex (TDD) mode, etc. When narrowband Internet of Things (NB-IoT) under a mobile communication system is deployed in a non-terrestrial network (NTN), the main operating mode is frequency-division duplex (FDD) mode. When the NB-IoT NTN is deployed on the TDD frequency resources of a satellite communication system, it is necessary to design the operating mode of the NB-IoT NTN system in the TDD mode.

[0004] The NB-IoT NTN and the satellite communication system share spectrum resources in a time-division manner, but the periods and configuration processes of the time-domain resource configurations of the two systems are different. Since information transmission can only be achieved in the time units that can communicate with each other in their frame structures, the signaling transmission process is prolonged. Summary of the Invention

[0005] This application proposes a method and device for accessing a wireless communication system, which solves the problem of reduced random access efficiency due to scenario factors, and is particularly applicable to application scenarios where the NTN system and the satellite communication system communicate with each other.

[0006] In a first aspect, this application proposes a method for accessing a wireless communication system, including the following steps: Determine the coverage level of random access; Determine the configuration information for the target coverage level in response to the target coverage level, including at least two values of the target parameter, where the target parameter includes any one or more of the initial target reception power of the random access preamble sequence, the number of repetitions, the power step adjustment amount, and the maximum number of accesses; Determine the random access preamble sequence transmitted according to the configuration information.

[0007] The method described in any embodiment of the first aspect of the present application is used for a terminal device and includes the following steps: Receive the configuration information for the target coverage level, including at least two values of the target parameter, where the target parameter includes any one or more of the initial target reception power of the random access preamble sequence, the number of repetitions, the power step adjustment amount, and the maximum number of accesses; Determine the coverage level of random access, and determine the configuration information for the target coverage level in response to the target coverage level; Determine a value of the target parameter in the configuration information according to the random access delay, and send the random access preamble sequence.

[0008] The method described in any embodiment of the first aspect of the present application is used for a network device and includes the following steps: Send the configuration information for the target coverage level, including at least two values of the target parameter, where the target parameter includes any one or more of the initial target reception power of the random access preamble sequence, the number of repetitions, the power step adjustment amount, and the maximum number of accesses; Determine the coverage level of random access, and determine the configuration information for the target coverage level in response to the target coverage level; Receive the random access preamble sequence according to the configuration information.

[0009] In any embodiment of the first aspect, preferably, the configuration information further includes the random access delay requirements corresponding to at least two values of the target parameter respectively.

[0010] In any embodiment of the first aspect, preferably, the target parameter includes two values of the initial target reception power and , , and two values of the number of repetitions of the random access sequence and , , where { , }, { , } are respectively applicable to terminal devices with different random access delay requirements.

[0011] In any embodiment of the first aspect, preferably, the target parameter includes two values of the power step adjustment amount and , , and two values of the repetition times of the random access sequence and , , where { , }, { , } are respectively applicable to terminal devices with different random access delay requirements.

[0012] In any embodiment of the first aspect, preferably, the physical random access channel (PRACH) resource configurations corresponding to at least two values of the target parameter are different.

[0013] In any embodiment of the first aspect, preferably, the configuration information is included in the broadcast message.

[0014] In any embodiment of the first aspect, preferably, the target parameter further includes configuration parameters of the random access response, including the timing access response window and the period of the random access response control information.

[0015] In a second aspect, the present application further provides a terminal-side device for implementing the method described in any embodiment of the first aspect of the present application. At least one module in the terminal-side device is used for at least one of the following functions: receiving configuration information for a target coverage level; determining the coverage level of random access; determining configuration information for a target coverage level; determining a value of a target parameter in the configuration information; sending a random access preamble sequence.

[0016] In a third aspect, the present application further provides a network-side device for implementing the method described in any embodiment of the first aspect of the present application. At least one module in the network-side device is used for at least one of the following functions: sending configuration information for a target coverage level; determining the coverage level of random access; determining configuration information for a target coverage level; receiving a random access preamble sequence.

[0017] The present application further provides a communication device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the method described in any embodiment of the first aspect of the present application.

[0018] The present application further provides a computer-readable medium, where a computer program is stored on the computer-readable medium, and the computer program, when executed by a processor, implements the steps of the method described in any embodiment of the first aspect of the present application.

[0019] The present application also provides a mobile communication system, including at least one network-side device as described in any embodiment of the present application and / or at least one terminal-side device as described in any embodiment of the present application.

[0020] The above at least one technical solution adopted in the embodiments of the present application can achieve the following beneficial effects: The present application designs the random access process of the NB-IoT NTN system operating in the TDD mode. By configuring different values of parameters such as the received power target value, power step adjustment amount, maximum access times, and repetition times for transmitting the random access preamble sequence under the same coverage level, the purpose of coordinating the power and transmission times of transmitting the random access preamble sequence is achieved, and the access requirements of terminal devices with different access delay requirements are met. Description of the Drawings

[0021] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation to the present application. In the drawings: Figure 1 It is a schematic diagram of the TDD frame format of the satellite communication system; Figure 2 It is a schematic diagram of sharing spectrum resources in a time-division manner between the NB-Iot NTN and the satellite communication system; Figure 3 It is a flowchart of the embodiment of the method of the present application; Figure 4 It is a schematic diagram of the repeated transmission of the random access response; Figure 5 It is a flowchart of the embodiment of the method of the present application for the network-side device; Figure 6 It is a flowchart of the embodiment of the method of the present application for the terminal-side device; Figure 7 It is a schematic diagram of the embodiment of the network-side device; Figure 8 It is a schematic diagram of the embodiment of the terminal-side device; Figure 9 It is a schematic diagram of the structure of the network-side device according to another embodiment of the present invention; Figure 10 It is a block diagram of the terminal-side device according to another embodiment of the present invention. Detailed Embodiments

[0022] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in combination with the specific embodiments of the present application and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0023] The technical solutions provided by various embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0024] Figure 1 The figure is a schematic diagram of the TDD frame format of the satellite communication system. Regarding the time allocation of the satellite communication system, the uplink and downlink time domain resource configuration of the satellite communication system that shares spectrum resources with the mobile communication system may use another time period configuration. For example, the period of the TDD standard frame format of a certain satellite communication system is 90ms, which is divided into 4 downlink transmission time units, 4 uplink transmission time units and several protection time units. The shared spectrum resources are used partly for the satellite communication system and partly for the mobile communication system. According to the rules of spectrum planning and agreement, the satellite communication system and the mobile communication system may share the spectrum resources with a variety of time allocation ratios.

[0025] Figure 2 The following is a schematic diagram of the time-division sharing of spectrum resources between NB-IoT NTN and satellite communication systems. NB-IoT NTN and satellite communication systems share spectrum resources in a time-division manner, but the configuration cycle and configuration process of the time domain resources of the two systems are different. In the current system design, the narrowband physical random access channel (NPRACH) resource setting cycle of NB-IoT NTN is The start time of NPRACH may be the first Taking the NPRACH cycle of 40ms as an example, assuming that the first preamble transmission overlaps with the available uplink time of the satellite communication system TDD frame format, the next preamble transmission opportunity will be at After ms, It is the operation of taking the least common multiple. It can be seen that the repeated transmission of the preamble sequence for one access takes a considerable time to complete. If the NPRACH resource setting period is longer, the repeated transmission of the preamble sequence for one access will also increase exponentially. The present invention designs the working mode of the NB-IoT NTN system in TDD mode, and improves the random access efficiency and user experience by configuring the access response and other process wireless parameters when the TDD mode system with two different periods uses the spectrum resources in time division multiplexing.

[0026] Figure 3This is the flowchart of the embodiment of the method of this application. This application proposes a method for accessing a wireless communication system, including the following steps 110 to 130.

[0027] In the application scenario of this application, the first system and the second system share the target spectrum resources in time division. The working mode of the first system is NB-IoT NTN in the TDD mode, and the second system is, for example, a satellite communication system. The physical random access channel resource configuration parameters of one coverage level of NB-IoT are divided into at least two groups. The physical random access channel resources of different groups are applicable to different access delay requirements and are used to determine the initial target reception power (hereinafter briefly referred to as P ), the power boost step , the access repetition times At least one of the parameters is configured differently. The terminal device determines the coverage level it is in based on downlink measurement and its threshold parameters, then selects the target parameter group from at least two groups of parameters according to its own access delay requirement in the physical random access channel resource configuration of this coverage level, and then sends the preamble sequence according to the configuration of the target parameter group. For terminal devices with high access delay requirements, a higher initial target reception power and / or a higher power boost step and / or a smaller access repetition times can be configured. For terminal devices with low access delay requirements, a lower initial target reception power and / or a lower power boost step and / or a larger access repetition times can be configured. Through the physical random access channel resource configurations of different groups, the energy of the access signal sent by the terminal device can be flexibly allocated in time to adapt to the access delay requirement and the power consumption efficiency requirement of the terminal device.

[0028] Step 110, determine the coverage level of random access.

[0029] For example, NB-IoT defines a total of 3 coverage levels, namely level 0, level 1, and level 2. The coverage level where the terminal device is located is determined based on downlink measurement (for example: reference signal received power RSRP) and its threshold parameters. The terminal device needs to determine the physical random access channel resources before sending the random access preamble. Each coverage level is equipped with corresponding physical random access channel resource configuration parameters. Since the terminal device has 3 coverage levels, a parameter PREAMBLE_TRANSMISSIN_COUNTER_CE (hereinafter briefly referred to as C ) is introduced for the preamble sequence retransmission counter corresponding to each coverage level.

[0030] The selection of physical random access channel resources can be divided into two types: one is the physical random access channel resources explicitly indicated by the base station (eNB); the other is the physical random access channel resources selected by the terminal device. The NB-IoT terminal device selects the physical random access channel resources according to its corresponding coverage level. Step 120: In response to the target coverage level, determine the configuration information for the target coverage level, including at least two values of the target parameter, where the target parameter includes any one or more of the initial target reception power of the random access preamble sequence, the number of repetitions, the power step adjustment amount, and the maximum number of accesses.

[0031] In one embodiment, the configuration information further includes the random access delay requirement corresponding to the value of the target parameter. It should be noted that, under the Figure 2 shared spectrum resource conditions shown, since the time required for repeated transmission is greatly extended, the range of the random access response duration is accordingly greatly extended. During this period, the solution of the present application enables the terminal to dynamically select the target parameter and complete random access within the required delay range.

[0032] In one embodiment, the target parameter includes at least two values of the initial target reception power and , , and at least two values of the number of repetitions of the random access sequence and , , where { , }, { , } are respectively applicable to terminal devices with different random access delay requirements.

[0033] In one embodiment, the target parameter includes at least two values of the power step adjustment amount and , , and at least two values of the number of repetitions of the random access sequence and , , where { , }, { , } are respectively applicable to terminal devices with different random access delay requirements.

[0034] In one embodiment, the physical random access channel resource configurations corresponding to at least two values of the target parameter are different.

[0035] In one embodiment, the target parameter further includes configuration parameters of a random access response, including a timing access response window and a period of random access response control information.

[0036] In one embodiment, the configuration information is included in a broadcast message. The network-side device sends the configuration information, and the terminal-side device receives the configuration information. That is, after determining the configuration information corresponding to the target coverage level, the network-side device sends the configuration information. Furthermore, when receiving a random access request, the corresponding configuration information needs to be determined according to the target coverage level. After receiving the configuration information, the terminal-side device determines the configuration information corresponding to the target coverage level for use in the random access process.

[0037] For example, the configuration parameters of the physical random access channel resource and the random access preamble are sent to the terminal device through System Information Block SIB2-NB, mainly including: The number of repetitions of NPRACH transmission, determined by parameter N; The time-domain resource of NPRACH and the random access frequency-domain resource; The maximum number of attempts to send a preamble sequence.

[0038] After determining the NPRACH resource, select a random access preamble, and then set the target preamble transmission power of [dBm]. Where is the transmission power of the configured terminal device cell subframe , is the terminal device in the cell measured downlink path loss.

[0039] When the coverage level is 1 and 2, is set to the corresponding maximum terminal device output power.

[0040] When the coverage level is 0, , where is the initial target received power of the preamble sequence, is the number of access times, is the number of repetitions of the preamble sequence transmission.

[0041] Step 130: Determine a random access preamble sequence transmitted according to the configuration information.

[0042] The receiving-side device selects the value of the target parameter from the configuration information according to the random access delay requirement and sends a random access preamble sequence. The network-side device receives the random access preamble sequences from one or more terminal devices according to the configuration information.

[0043] In step 130, for example, the contention-based random access procedure in NB-IoT consists of four steps: (1) The terminal device sends a random access preamble (Message 1); (2) The terminal device receives a random access response sent by the network side (Message 2); (3) The terminal device sends Msg3 (Message 3); (4) Contention resolution (Message 4).

[0044] In step (1) among them, after the terminal device finishes setting , it uses the physical random access channel resources corresponding to the selected coverage level, the corresponding RA-RATI, the preamble index or subcarrier index, and to send a preamble with the number of repetitions required for preamble transmission corresponding to the selected preamble group. The power boost step ΔP is the power increment of the preamble sequence loop when initiating the next random access if no access response information is detected after one cycle transmission of the preamble sequence.

[0045] In step (2) among them, after the terminal device sends a random access preamble, the MAC entity will open an RAR window for receiving a random access response (Random Access Response, RAR), and monitor the PDCCH for the RAR identified by the random access radio network temporary identifier (RA-RNTI). The opening position of the RAR window is related to the NPRACH repetition times. If no RAR is received within the RAR window, the terminal device will perform preamble sequence retransmission. As Figure 4 shown, it is a schematic diagram of random access response retransmission. If the retransmission counter reaches the maximum number of times it is allowed to send the preamble sequence at a lower coverage level and the terminal device still fails to successfully receive the random access response, the terminal device will jump to the next higher coverage level. If the current coverage level is the highest coverage level, it will stay at the current coverage level and re-attempt preamble transmission from the PRACH resources. Figure 4 Shown is a random access procedure with the NPRACH repetition times being 4 and the maximum number of attempts to send the preamble sequence being 3.

[0046] It should be noted that the above steps are for network entities in a wireless communication system, including terminal-side devices, network-side devices, or other intermediate devices; the above steps can also be used for a service device that provides information processing for the network entity devices; the above steps can also be used for any device, system, subsystem, circuit, chip, or software entity that provides information reception, transmission, identification, and processing for terminal-side devices or network-side devices.

[0047] Figure 5 It is a flowchart of an embodiment of the method of this application for a network-side device.

[0048] The method according to any embodiment of the first aspect of the present application, which is used for a network-side device, includes the following steps 210 to 230: Step 210: Send configuration information for a target coverage level, including at least two values of a target parameter, where the target parameter includes any one or more of an initial target reception power of a random access preamble sequence, a repetition number, a power step adjustment amount, and a maximum access number.

[0049] The configuration information of NPRACH is sent in system information block SIB2, which includes the initial target reception power of the preamble sequence , a power boost step , an access number and other parameter configurations. In the embodiments of the present invention, for terminal devices with different access delay requirements, at least two values are configured for at least one of these parameters.

[0050] For example, in the existing IB-IoT system, the value configured through SIB2 is one of {-120 dBm, -118 dBm, -116 dBm, -114 dBm, -112 dBm, -110 dBm, -108 dBm, -106 dBm, -104 dBm, -102, -100 dBm, -98 dBm, -96 dBm, -94 dBm, -92 dBm, -90 dBm}; the power boost step is one of {0 dB, 2 dB, 4 dB, 6 dB}; the access number is one of {1, 2, 4, 8, 16, 32, 64, 128}.

[0051] Optionally, the configuration information of the target coverage level is sent in a broadcast message.

[0052] Step 220: Determine the coverage level of random access, and determine the configuration information for the target coverage level in response to the target coverage level.

[0053] In this embodiment, the network-side device sends the configuration information of the target coverage level 0, and configures the target parameter to have two values and , . At the same time, configure the target parameter to have two values and . Among them, . has two values and , .

[0054] Optionally, the network side device simultaneously indicates 、 and for terminal devices with access delay requirements within , and and for terminal devices with access delay requirements within . Then, the terminal device determines whether to use . 、 and , or to use 、 and to determine , and further determine . If the terminal device uses 、 and to determine , it means that the transmission power of the random access preamble sequence sent by the terminal device is relatively small, but the number of repetitions is relatively large, which is suitable for terminal devices with low power consumption capabilities and not high access delay requirements. At the same time, if the terminal device uses and and to determine , it means that the transmission power of the random access preamble sequence sent by the terminal device is relatively large, but the number of repetitions is relatively small, which is suitable for terminal devices with high power consumption capabilities and high access delay.

[0055] For another example, in the above example, the value of the configured target parameter has one value. At the same time, the value of the configured target parameter has two values and . Among them, . has two values and , . The network side device simultaneously indicates and for terminal devices with access delay requirements within , and for terminal devices with access delay requirements within , . Similarly, it can meet the terminal devices with different access delay requirements.

[0056] Optionally, the PRACH resource configurations corresponding to at least two values of the target parameter are different. At least two values of the above parameters are applicable to terminal devices with different access delay requirements. The target receiving power of the random access preambles sent by terminal devices with different access delay requirements is different. To avoid interference between random access signals of terminal devices and improve the success rate of access signal detection, mutually independent PRACH resources can be configured for terminal device groups with different access delay requirements. Specifically, it includes different PRACH time or frequency resources.

[0057] Step 230, receive the random access preamble sequence according to the configuration information.

[0058] In the application scenario of the embodiment of the present invention, the first system and the second system share spectrum resources in a time-division manner. Assume that the period of NPRACH is 40 ms. The first preamble sequence transmission overlaps with the available uplink time of the TDD frame format of the second system. Subsequent preamble sequence transmission opportunities will be after 360 ms, 720 ms,.... The network-side device sends the configuration information of target coverage level 0 and configures the values of the target parameter There are two values and . At the same time, configure There are two values , . The network-side device configures and to be applicable to terminal devices with access delay requirements within , and to be applicable to terminal devices with access delay requirements within . . Then, terminal device 1 determines to use and according to its own access delay requirement, and further determines . Terminal device 2 determines to use and according to its own access delay requirement, and further determines . The network-side device then detects the random access preamble sequence according to the configuration information. The transmission power of the random access preamble sequence sent by terminal device 1 is small, the number of repetitions is large, and the access system time is long. Then the transmission power of the random access preamble sequence sent by terminal device 1 is large, but the number of repetitions is small, and the access system time is short, thus meeting the access requirements of terminal devices with different access delay requirements.

[0059] Optionally, the target parameter further includes configuration parameters of a random access response, including any one of a random access response window and a period of random access response control information. The settings of these parameters affect the access delay of the terminal device. For terminal devices with high requirements for access delay, a shorter random access response window and / or a shorter period of random access response control information can be configured.

[0060] Figure 6 Flowchart of an embodiment of the method of this application for a terminal-side device.

[0061] The method according to any one of the embodiments of the first aspect of this application, when used in a terminal-side device, includes the following steps 310 to 330: Step 310: Receive configuration information for a target coverage level, including at least two values of a target parameter, where the target parameter includes any one or more of an initial target reception power of a random access preamble sequence, a repetition count, a power step adjustment amount, and a maximum access count.

[0062] The terminal device selects a corresponding coverage level according to the signal strength. Here, the terminal device can determine its own target coverage level according to the reception strength of the measurement reference signal. Then the terminal device obtains the configuration information of the target coverage level. This configuration information includes at least two values of the target parameter. The target parameter includes any one of an initial target reception power of a random access preamble sequence, a repetition count, a power step adjustment amount, and a maximum access count.

[0063] Optionally, the configuration information also indicates a range of access delay requirements applicable to each of the at least two values of the target parameter. The terminal device determines the effective value of the target parameter according to this indication and its own access delay requirement range. And determines the transmission power and / or the number of repeated transmissions of the random access sequence according to the effective value of the target parameter.

[0064] Optionally, the PRACH resource configurations corresponding to the at least two values of the target parameter are different. The terminal device determines the currently effective PRACH resource to be transmitted according to the effective value of the target parameter.

[0065] Optionally, obtain the configuration information of the target coverage level through a broadcast message.

[0066] Optionally, the target parameter further includes configuration parameters of a random access response, including any one of a random access response window and a period of random access response control information. The terminal device determines the parameters of the random access response according to its own access delay requirement, and determines the random access response window and / or the detection position of the random access response control information.

[0067] Step 320: Determine the coverage level of random access, and determine the configuration information for the target coverage level in response to the target coverage level.

[0068] After determining the target coverage level to which it belongs, the terminal device obtains the configuration information of the target coverage level.

[0069] Step 330: Determine a value of a target parameter in the configuration information according to the random access delay, and send a random access preamble sequence.

[0070] Determine the effective value of the target parameter for sending the random access preamble sequence according to the random access delay requirement, and send the random access preamble sequence according to the effective value of the target parameter.

[0071] For example, the terminal device obtains the random access delay requirement in the configuration information, or the terminal device obtains the local random access delay requirement, and determines the value of the target parameter according to the random access delay.

[0072] For example, the target parameter includes two values of the initial target reception power and , , and two values of the random access sequence and , , where and are applicable to terminal devices with the first-level access delay requirement, where and are applicable to terminal devices with the second-level access delay requirement.

[0073] For another example, the target parameter includes two values of the power step adjustment amount and , , and two values of the random access sequence and , , where and are applicable to terminal devices with the third-level access delay requirement, where and are applicable to terminal devices with the fourth-level access delay requirement.

[0074] Figure 7 It is a schematic diagram of an embodiment of the network side device.

[0075] An embodiment of the present application also provides a network-side device for implementing the method of any one of the embodiments of the present application. At least one module in the network-side device is used for at least one of the following functions: sending configuration information for a target coverage level; determining the coverage level of random access; determining configuration information for a target coverage level; receiving a random access preamble sequence.

[0076] To implement the above technical solution, a network-side device 400 proposed in the present application includes a network sending module 401, a network determining module 402, and a network receiving module 403 that are interconnected.

[0077] The network sending module is used to send the configuration information.

[0078] The network determining module is used to determine the coverage level of random access; determine configuration information for a target coverage level.

[0079] The network receiving module is used to receive a random access preamble sequence.

[0080] The specific methods for implementing the functions of the network sending module, the network determining module, and the network receiving module are as described in the method embodiments of the present application and will not be elaborated here.

[0081] The network-side device described in the present application may refer to a base station facility, a network-side device or a server connected to the base station, may also be a system providing services for the above devices, or may also be any system, subsystem, module, circuit, chip or software running device that provides information reception, transmission, identification, and processing for the above devices.

[0082] Figure 8 It is a schematic diagram of an embodiment of a terminal-side device.

[0083] The present application also provides a terminal-side device for implementing the method of any one of the embodiments of the present application. At least one module in the terminal-side device is used for at least one of the following functions: receiving configuration information for a target coverage level; determining the coverage level of random access; determining configuration information for a target coverage level; determining a value of a target parameter in the configuration information; sending a random access preamble sequence.

[0084] To implement the above technical solution, a terminal-side device 500 proposed in the present application includes a terminal sending module 501, a terminal determining module 502, and a terminal receiving module 503 that are interconnected.

[0085] The terminal receiving module is used to receive the configuration information.

[0086] The terminal determination module is configured to determine the coverage level of random access; determine the configuration information for the target coverage level; and determine a value of a target parameter in the configuration information.

[0087] The terminal sending module is configured to send a random access preamble sequence.

[0088] The specific methods for implementing the functions of the terminal sending module, the terminal determination module, and the terminal receiving module are as described in the method embodiments of the present application, and will not be elaborated here.

[0089] The terminal-side device described in the present application may refer to a user equipment (UE), a personal mobile terminal, a smart terminal, a mobile phone, a computer with a communication function, or may also be a system that provides services for the above devices, or may also be any system, subsystem, module, circuit, chip, or software running device that provides information reception, transmission, identification, and processing for the above devices.

[0090] Figure 9 FIG. shows a schematic structural diagram of a network-side device according to another embodiment of the present invention. As shown in the figure, the network-side device 600 includes a processor 601, a radio interface 602, and a memory 603. Among them, the radio interface may be multiple components, that is, it includes a transmitter and a receiver, and provides a unit for communicating with various other devices on a transmission medium. The radio interface realizes the communication function with the terminal-side device, processes radio signals through the receiving and transmitting devices, and the data carried by its signals communicates with the memory or the processor via an internal bus structure. The memory 603 contains a computer program for executing any embodiment of the present application, and the computer program runs or changes on the processor 601. When the memory, the processor, and the radio interface circuit are connected through a bus system, the bus system includes a data bus, a power bus, a control bus, and a status signal bus, which will not be elaborated here.

[0091] Figure 10 is a block diagram of a terminal-side device according to another embodiment of the present invention. The terminal-side device 700 includes at least one processor 701, a memory 702, a user interface 703, and at least one network interface 704. Each component in the terminal-side device 700 is coupled together through a bus system. The bus system is used to realize the connection and communication between these components. The bus system includes a data bus, a power bus, a control bus, and a status signal bus.

[0092] The user interface 703 may include a display, a keyboard, or a pointing device, for example, a mouse, a trackball, a touchpad, or a touch screen, etc.

[0093] The memory 702 stores executable modules or data structures. The operating system and application programs can be stored in the memory. Among them, the operating system includes various system programs, such as the framework layer, the core library layer, the driver layer, etc., which are used to implement various basic services and process hardware-based tasks. The application programs include various application programs, such as media players, browsers, etc., which are used to implement various application services.

[0094] In an embodiment of the present invention, the memory 702 includes a computer program for executing any one of the embodiments of the present application, and the computer program runs or changes on the processor 701.

[0095] The memory 702 includes a computer-readable storage medium. The processor 701 reads the information in the memory 702 and combines its hardware to complete the steps of the above method. Specifically, a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 701, it implements the steps of the method embodiments described in any one of the above embodiments.

[0096] The processor 701 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the method of the present application can be completed by the integrated logic circuit in the hardware of the processor 701 or by instructions in software form. The processor 701 may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field-programmable gate array or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present invention. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in combination with the embodiments of the present invention can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.

[0097] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. In a typical configuration, the device of the present application includes one or more processors (CPUs), an input / output user interface, a network interface, and a memory.

[0098] In addition, the present invention can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) that contain computer-usable program codes.

[0099] Accordingly, the present application also provides a computer-readable medium with a computer program stored thereon. When the computer program is executed by a processor, it implements the steps of the method described in any embodiment of the present application. For example, the memories 603 and 702 of the present invention may include non-permanent memories in the computer-readable medium, in the form of random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM.

[0100] Based on the embodiments of the apparatus of the present application, the present application also provides a mobile communication system, which includes at least one embodiment of the terminal-side device and / or at least one embodiment of the network-side device in the present application.

[0101] It should be noted that the specific mobile communication technology described in the present invention is not limited, and may be WCDMA, CDMA2000, TD-SCDMA, WiMAX, LTE / LTE-A, LAA, MuLTEfire, and the fifth-generation, sixth-generation, Nth-generation mobile communication technologies that may appear in the future.

[0102] The terminal described in the present invention refers to a terminal-side product that can support the communication protocol of the land mobile communication system, specifically the wireless modem module for communication, which can be integrated into various types of terminal forms such as mobile phones, tablets, and data cards to complete the communication function.

[0103] For ease of description, the fourth-generation mobile communication system LTE / LTE-A and its derivative MulteFire are taken as examples. Among them, the mobile communication terminal can be represented as UE (User Equipment), and the access device on the network side can be represented as the base station eNB or access point.

[0104] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0105] Those skilled in the art can understand that, unless specifically stated, the singular forms "a", "an", "the" and "said" used may also include the plural forms. It should be understood that when a device or component is "connected" to another device or component, it can be directly connected to other devices or components, or there may also be intermediate devices or components. In addition, the "connection" used here may include partial wireless connection and may also include partial wired connection.

[0106] In the description of the present application, it should be understood that the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In addition, in the description of the present application, unless otherwise specified, "a plurality of" means two or more. "And / or" describes the association relationship of associated objects and indicates that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.

[0107] The above are only the embodiments of the present application and are not used to limit the present application. For those skilled in the art, various changes and modifications can be made to the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included within the scope of the claims of the present application.

Claims

1. A method for accessing a wireless communication system, characterized in that, It includes the following steps: Determine the coverage level of random access; In response to the target coverage level, determine the configuration information for the target coverage level, including at least two values of the target parameter, where the target parameter includes any one or more of the initial target reception power of the random access preamble sequence, the number of repetitions, the power step adjustment amount, and the maximum number of accesses; Determine the random access preamble sequence transmitted according to the configuration information.

2. A wireless communication system access method for network-side devices, characterized in that, It includes the following steps: Send the configuration information for the target coverage level, including at least two values of the target parameter, where the target parameter includes any one or more of the initial target reception power of the random access preamble sequence, the number of repetitions, the power step adjustment amount, and the maximum number of accesses; Determine the coverage level of random access, and in response to the target coverage level, determine the configuration information for the target coverage level; Receive the random access preamble sequence according to the configuration information.

3. A wireless communication system access method for a terminal device, characterized in that, It includes the following steps: Receive the configuration information for the target coverage level, including at least two values of the target parameter, where the target parameter includes any one or more of the initial target reception power of the random access preamble sequence, the number of repetitions, the power step adjustment amount, and the maximum number of accesses; Determine the coverage level of random access, and in response to the target coverage level, determine the configuration information for the target coverage level; Determine a value of the target parameter in the configuration information according to the random access delay, and send the random access preamble sequence.

4. The method according to any one of claims 1 to 3, characterized in that The configuration information further includes the random access delay requirements corresponding to at least two values of the target parameter respectively.

5. The method according to any one of claims 1 to 3, characterized in that The target parameter includes two values of the initial target reception power and , , and two values of the repetition times of the random access sequence and , , where { , }, { , } are respectively applicable to terminal devices with different random access delay requirements.

6. The method according to any one of claims 1 to 3, characterized in that The target parameter includes two values of the power step adjustment amount and , , and two values of the repetition times of the random access sequence and , , where { , }, { , } are respectively applicable to terminal devices with different random access delay requirements.

7. The method according to any one of claims 1 to 3, characterized in that The physical random access channel resource configurations corresponding to at least two values of the target parameter are different.

8. The method according to any one of claims 1 to 3, characterized in that Include the configuration information in the broadcast message.

9. The method according to any one of claims 1 to 3, characterized in that The target parameter further includes the configuration parameters of the random access response, including the timing access response window and the period of the random access response control information.

10. A terminal-side device for implementing the method according to any one of claims 1, 3 to 9, characterized in that At least one module in the terminal-side device is used for at least one of the following functions: receiving the configuration information for the target coverage level; determining the coverage level of random access; determining the configuration information for the target coverage level; determining a value of the target parameter in the configuration information; sending the random access preamble sequence.

11. A network-side device for implementing the method according to any one of claims 1 to 2, 4 to 9, characterized in that At least one module in the network-side device is used for at least one of the following functions: sending the configuration information for the target coverage level; determining the coverage level of random access; determining the configuration information for the target coverage level; receiving the random access preamble sequence.

12. A communication device, characterized in that, It includes: A memory, a processor, and a computer program stored on the memory and executable on the processor, where the computer program, when executed by the processor, implements the steps of the method according to any one of claims 1 to 9.

13. A computer-readable medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the method according to any one of claims 1 to 9.

14. A mobile communication system includes at least one terminal-side device as described in claim 10 and at least one network-side device as described in claim 11.

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