Simplified receiving method and system for first system message block

Abstract

The present invention relates to the field of mobile communication access technology, and more particularly to a simplified method and system for receiving a first system message block, comprising: S1: obtaining first system message blocks of multiple resident cells; S2: screening the first system message blocks according to the cyclic prefix and slot of the first system message blocks; and S3: processing first system message blocks with the same cyclic prefix and slot in parallel based on the screening results to obtain a decoding result corresponding to each first system message block. The beneficial effect is that, in response to the problem that the prior art requires sequential reading and decoding according to the resident cells, which is time-consuming, the present solution receives the first system message blocks of each resident cell, determines the cyclic prefix and slot of each first system message block, and screens out first system message blocks with the same cyclic prefix and slot for combined processing, thereby shortening the overall receiving process and improving processing efficiency.

Description

Technical Field

[0001] The present invention relates to the field of mobile communication access technology, and in particular to a simplified receiving method and system for a first system message block. Background Art

[0002] 5G NR (New Radio) is a global 5G standard based on a new air interface design using OFDM (Orthogonal Frequency Division Multiplexing). In a 5G NR system, each gNB (gNB) in each cell periodically broadcasts the first system information block (SIB1) on the downlink shared channel (DL-SCH). This block indicates the availability of various system information configured by the base station and related reception parameters. User equipment (UE) often needs to read the SIB1 when performing various interactions, such as random access and determining cell residency.

[0003] In the prior art, when a user equipment needs to read a first system message block, it typically detects the first system message block at a corresponding frequency, determines the reception gain and reception timing of the first system message block, and performs Fourier transform, decoding, and other processing on the first system message block to obtain information contained in the first system message block.

[0004] However, during the actual implementation process, the inventors found that when in the scenario of determining the cell to reside in, the user equipment may receive the first system message blocks sent by multiple cells that can be resided on the same frequency. At this time, the user equipment often needs to follow the above process to receive and process the first system message blocks of each cell in turn, and then turn to the next cell, and finally determine the correct cell to reside in based on the decoding results, resulting in the problem of a relatively lengthy overall receiving process. Summary of the Invention

[0005] In view of the above problems existing in the prior art, a simplified receiving method for a first system message block is provided. On the other hand, a simplified receiving system for a first system message block applying the simplified receiving method is also provided.

[0006] The specific technical solutions are as follows:

[0007] A simplified method for receiving a first system message block, comprising:

[0008] Step S1: Acquire first system information blocks of multiple campable cells;

[0009] Step S2: Filtering the first system message block according to the cyclic prefix and slot of the first system message block;

[0010] Step S3: performing parallel processing on the first system message blocks having the same cyclic prefix and the same slot according to the screening result, so as to obtain a decoding result corresponding to each first system message block.

[0011] On the other hand, the step S2 includes:

[0012] Step S21: Classifying the first system message blocks according to the slots to generate a first identifier corresponding to each first system message block;

[0013] Step S22: respectively obtaining the cyclic prefix of the first system message block, and generating a second identifier of the first system message block according to the cyclic prefix;

[0014] The screening result includes the first identifier and the second identifier.

[0015] On the other hand, step S3 includes:

[0016] Step S31: adjusting the received signal gain and reception duration according to the signal strength of each campable cell;

[0017] Step S32: Allocate a decoding resource for each of the first system message blocks;

[0018] Each of the decoding resources is used to decode a control resource set;

[0019] Step S33: In each of the decoding resources, the first system message block is received and decoded according to the received signal gain and the receiving duration to obtain the decoding result.

[0020] On the other hand, after executing step S3, the first system message blocks with different cyclic prefixes in the same slot are further processed using a second processing method;

[0021] The second processing method includes:

[0022] Step A1: caching each of the first system message blocks in sequence, and extracting the signal strength of each of the campable cells respectively;

[0023] Step A2: generating a received signal gain and a receiving duration of each first system message block according to the signal strength;

[0024] Step A3: extract each of the first system message blocks from the buffer in sequence, and decode the first system message blocks.

[0025] On the other hand, after executing step S3, a third processing method is further used to process the first system message blocks in different slots;

[0026] The third processing method includes:

[0027] Step B1: receiving the first system message block in sequence according to the slot;

[0028] Step B2: generating a received signal gain and a receiving duration of the first system message block according to the signal strength of the campable cell corresponding to the first system message block;

[0029] Step B3: Receive and decode the first system message block according to the received signal gain and the receiving duration, and then return to step B1 to receive the next first system message block until all the first system message blocks are received.

[0030] A simplified receiving system for a first system message block, configured to implement the simplified receiving method, comprises:

[0031] An acquisition module, wherein the acquisition module acquires first system message blocks of multiple resident cells;

[0032] a screening module, the screening module being connected to the obtaining module, and screening the first system message block according to the cyclic prefix and slot of the first system message block;

[0033] A processing module is configured to call a corresponding processing method according to a screening result to parse the first system message block.

[0034] On the other hand, the screening module includes:

[0035] a first classification module, which classifies the first system message blocks according to the slots to generate a first identifier corresponding to each first system message block and adds the first identifier to the screening result;

[0036] The second classification module obtains the cyclic prefix of the first system message block respectively, generates a second identifier of the first system message block according to the cyclic prefix, and adds the second identifier to the screening result.

[0037] On the other hand, the processing module includes a first processing module, and the first processing module includes:

[0038] a first parameter generation module, configured to adjust a received signal gain and a reception duration according to a signal strength of each of the resident cells;

[0039] an allocation module, the allocation module being connected to the first parameter generation module, and the allocation module respectively allocating a control resource set to each first system message block;

[0040] A first receiving module is connected to the allocation module, and the first receiving module receives and decodes the first system message block in each control resource set according to the received signal gain and the receiving duration.

[0041] On the other hand, the processing module includes a second processing module, and the second processing module includes:

[0042] a cache module, wherein the cache module sequentially caches each of the first system message blocks and respectively extracts the signal strength of each of the resident cells;

[0043] a second parameter generating module, the second parameter generating module being connected to the cache module, and generating a received signal gain and a receiving duration of each first system message block according to the signal strength;

[0044] The second receiving module extracts each of the first system message blocks from the buffer in sequence and decodes the first system message blocks.

[0045] On the other hand, the processing module further includes a third processing module, and the third processing module includes:

[0046] A third parameter generation module, which receives the first system message block in sequence according to the slot, and generates the received signal gain and reception duration of the first system message block according to the signal strength of the resident cell corresponding to the first system message block

[0047] A third receiving module is connected to the third parameter generating module, and receives and decodes the first system message block according to the received signal gain and the receiving duration.

[0048] The above technical solution has the following advantages or beneficial effects:

[0049] To address the time-consuming problem in the prior art of reading the first system message block, which requires sequential reading and decoding according to the available cells, this solution receives the first system message blocks of each available cell, identifies the cyclic prefix and slot of each first system message block, and selects first system message blocks with the same cyclic prefix and slot for merging, thereby shortening the overall receiving process and improving processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The embodiments of the present invention will be described more fully with reference to the accompanying drawings, which are provided for illustration and description only and are not intended to limit the scope of the present invention.

[0051] Figure 1 is an overall schematic diagram of an embodiment of the present invention;

[0052] Figure 2 This is a schematic diagram of the sub-steps of step S2 in an embodiment of the present invention;

[0053] Figure 3 This is a schematic diagram of sub-steps of step S3 in an embodiment of the present invention;

[0054] Figure 4 This is the second processing method in the embodiment of the present invention;

[0055] Figure 5 This is the third processing method in the embodiment of the present invention;

[0056] Figure 6 This is a simplified schematic diagram of a receiving system in an embodiment of the present invention;

[0057] Figure 7 This is a schematic diagram of a screening module in an embodiment of the present invention;

[0058] Figure 8 This is a schematic diagram of a first processing module in an embodiment of the present invention;

[0059] Figure 9 Schematic diagram of the second processing module in an embodiment of the present invention;

[0060] Figure 10 Schematic diagram of the third processing module in an embodiment of the present invention. DETAILED DESCRIPTION

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0062] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein may be combined with each other.

[0063] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0064] The present invention comprises:

[0065] A simplified receiving method for a first system message block, such as Figure 1 Shown, including:

[0066] Step S1: Acquire first system information blocks of multiple campable cells;

[0067] Step S2: Filter the first system message block according to the cyclic prefix and slot of the first system message block;

[0068] Step S3: performing parallel processing on the first system message blocks having the same cyclic prefix and slot according to the screening result to obtain a decoding result corresponding to each first system message block.

[0069] Specifically, to address the relatively lengthy process of receiving the first system message block in the prior art, this embodiment receives the first system message block of each residable cell separately, extracts its cyclic prefix (CP) and slot, and thereby determines the time-domain order of each first system message block. Subsequently, first system message blocks with the same cyclic prefix and slot are selected. Since these first system message blocks are located close together in the time domain, they can be received simultaneously when the radio frequency module is operating, and corresponding processing methods are invoked for parallel processing. This reduces the number of times the first system message blocks of each residable cell are sequentially received, thereby improving processing efficiency.

[0070] During implementation, the simplified reception method described above is configured as a software embodiment in a user equipment (UE). The UE has preconfigured the frequencies of each cell and detects signals from each available cell at the corresponding frequencies. After the Radio Resource Control (RRC) layer obtains multiple available cells through cell search, it filters the first system message block in the time domain based on the cyclic prefix and slot position it retrieves, sends the result to the physical layer for processing and decoding, and then feeds it back to the UE to select the corresponding cell.

[0071] In one embodiment, Figure 2 As shown, step S2 includes:

[0072] Step S21: Classify the first system message blocks according to the slots to generate a first identifier corresponding to each first system message block;

[0073] Step S22: Acquire the cyclic prefix of each first system message block, and generate a second identifier of the first system message block according to the cyclic prefix;

[0074] The screening result includes a first identifier and a second identifier.

[0075] Specifically, in order to achieve a better screening effect on the first system message block, in this embodiment, a screening process based on slots and cyclic prefixes is set up in sequence. Among them, the first identifier is used to mark the slot to which the first system message block belongs, which is arranged in sequence according to the order of the slots. The first system message blocks in the same slot have the same first identifier. The second identifier is used to indicate the cyclic prefix of the first system message block, which is read and generated in sequence according to the order in the time domain. If two first system message blocks in the same slot have the same cyclic prefix, they will be assigned the same second identifier. In this way, a better classification effect of the first system message block is achieved.

[0076] In one embodiment, Figure 3 As shown, step S3 includes:

[0077] Step S31: adjusting the received signal gain and reception duration according to the signal strength of each campable cell;

[0078] Step S32: Allocate a decoding resource for each first system message block;

[0079] Each decoding resource is used to decode a control resource set;

[0080] Step S33: In each decoding resource, the first system message block is received and decoded according to the received signal gain and the receiving duration to obtain a decoding result.

[0081] Specifically, to address the problem in the prior art of the lengthy reception process of first system message blocks for multiple resident cells, in this embodiment, the signal strength, i.e., received signal strength (RSSI), is obtained for each resident cell, and the resident cells are compared based on the signal strength, thereby adjusting the received signal gain of the radio frequency module when receiving the first system message block, as well as the duration of the radio frequency module's reception. Subsequently, a decoding resource is allocated to each of the multiple first system message blocks received this time, so that the user equipment can process the multiple first system message blocks in parallel. Subsequently, in accordance with prior art, the user equipment can call relevant hardware resources, such as a hardware accelerator, to perform Fourier transform and decoding processing on the first system message block, thereby achieving better reception efficiency.

[0082] In implementation, decoding resources refer to the number of control resource sets (CORESETs) and physical downlink shared channels (PDSCHs) supported by the user equipment. For example, in one embodiment, the user equipment supports three CORESETs and three PDSCHs (SI-RNTI, P-RNTI, or RA-RNTI). In this case, the UE can use the supported CORESETs and PDSCHs for simultaneous reception of SIB1s from three cells, configuring cell 0 with CORESET 0 and PDSCH 0 (corresponding to HARQ 17), cell 1 with CORESET 1 and PDSCH 1 (corresponding to HARQ 18), and cell 2 with CORESET 2 and PDSCH 2 (corresponding to HARQ 19). To achieve optimal reception, the signal strengths of multiple campable cells need to be extracted and combined for automatic gain control to obtain a more appropriate received signal gain. In this case, the reception duration of each first system message block is tracked based on the campable cell with the strongest signal strength, and the reception duration is controlled to ensure complete reception of each first system message block. At this point, there is a small time offset between the first system message blocks, which can be compensated during the channel estimation process. If the number of first system message blocks in the same slot and cyclic prefix exceeds the decoding resources, the excess first system message blocks can be added to a buffer. After the first system message blocks currently being processed in parallel are completed, the first system message blocks can be retrieved from the buffer and decoding resources allocated for processing.

[0083] In one embodiment, after executing step S3, the second processing method is further used to process the first system message blocks with different cyclic prefixes in the same slot;

[0084] like Figure 4 As shown, the second processing method includes:

[0085] Step A1: Buffer each first system message block in sequence and extract the signal strength of each campable cell respectively;

[0086] Step A2: generating a received signal gain and a receiving duration of each first system message block according to the signal strength;

[0087] Step A3: extract each first system message block from the buffer in sequence, and decode the first system message block.

[0088] Specifically, to enable decoding of a large number of first system message blocks, this embodiment employs an offline decoding process for first system message blocks with different cyclic identifiers in the same slot. Specifically, these first system message blocks are received and cached sequentially based on their time-domain order. During reception, the received signal gain and reception duration in the current slot are pre-determined based on the signal strength of each resident cell to enable complete reception of the first system message block. Subsequently, each first system message block is retrieved from the cache in sequence offline and subsequently decoded. This processing method enables decoding of a large number of first system message blocks.

[0089] In one embodiment, after executing step S3, a third processing method is further used to process the first system message blocks in different slots;

[0090] like Figure 5 As shown, the third processing method includes:

[0091] Step B1: receiving the first system message block in sequence according to the slot;

[0092] Step B2: generating a received signal gain and a receiving duration of the first system message block according to the signal strength of the campable cell corresponding to the first system message block;

[0093] Step B3: Receive and decode the first system message block according to the received signal gain and the reception duration, and then return to step B1 to receive the next first system message block until all first system message blocks are received.

[0094] Specifically, in the case where multiple first system message blocks are located in different slots, to enable reception of such first system message blocks, this embodiment sequentially receives each first system message block online. During the reception process, since each first system message block is located in a different slot, the signal strength of the cell where each first system message block can reside is obtained to determine the received signal gain and reception duration. Decoding is then performed according to existing techniques until all first system message blocks are processed.

[0095] During implementation, the second processing method and the third processing method can be executed in parallel. After executing step S2 and assigning the first identifier and the second identifier to each first system message block, the first system message blocks are grouped according to the corresponding first identifier and the second identifier and processed using the corresponding processing method. For example, in one embodiment, there are multiple first system message blocks, and each first system message block has the same or different first identifier and second identifier. In the screening process, for first system message blocks with different first identifiers, they are directly transferred to the third processing method to be received and processed in sequence according to the slot; for multiple first system message blocks with the same first identifier, it is further determined whether their second identifiers are the same; if they are the same, the first processing method is used to decode this type of first system message block; if they are different, the second processing method is used to decode them separately.

[0096] A simplified receiving system for a first system message block is used to implement the simplified receiving method mentioned above, such as Figure 6 Shown, including:

[0097] An acquisition module 1, wherein the acquisition module 1 acquires first system information blocks of multiple resident cells;

[0098] A screening module 2 is connected to the acquisition module 1, and the screening module 2 screens the first system message block according to the cyclic prefix and slot of the first system message block;

[0099] Processing module 3, processing module 3 calls the corresponding processing method according to the screening result to parse the first system message block.

[0100] Specifically, to address the relatively lengthy reception process for the first system message block in the prior art, this embodiment determines the time-domain order of each first system message block by separately receiving the first system message block for each resident cell and extracting its cyclic prefix and slot position. Subsequently, first system message blocks with the same cyclic prefix and slot position are selected. Since these first system message blocks are located close together in the time domain, they can be received simultaneously when the radio frequency module is operating, and corresponding processing methods are invoked for parallel processing. This reduces the number of times the first system message blocks for each resident cell are sequentially received, thereby improving processing efficiency.

[0101] In one embodiment, Figure 7 As shown, the screening module 2 includes:

[0102] A first classification module 21, which classifies the first system message blocks according to the slots to generate a first identifier corresponding to each first system message block and adds the first identifier to the screening result;

[0103] The second classification module 22 obtains the cyclic prefix of the first system message block respectively, generates a second identifier of the first system message block according to the cyclic prefix, and adds the second identifier to the screening result.

[0104] Specifically, in order to achieve a better screening effect on the first system message block, in this embodiment, a screening process based on slots and cyclic prefixes is set up in sequence. Among them, the first identifier is used to mark the slot to which the first system message block belongs, which is arranged in sequence according to the order of the slots. The first system message blocks in the same slot have the same first identifier. The second identifier is used to indicate the cyclic prefix of the first system message block, which is read and generated in sequence according to the order in the time domain. If two first system message blocks in the same slot have the same cyclic prefix, they will be assigned the same second identifier. In this way, a better classification effect of the first system message block is achieved.

[0105] In one embodiment, the processing module includes a first processing module 3A, such as Figure 8 As shown, the first processing module 3A includes:

[0106] A first parameter generation module 3A1, which adjusts the received signal gain and reception duration according to the signal strength of each resident cell;

[0107] an allocation module 3A2, the allocation module 3A2 is connected to the first parameter generation module 3A1, and the allocation module 3A2 allocates a control resource set to each first system message block;

[0108] The first receiving module 3A3 is connected to the allocation module 3A2. The first receiving module 3A3 receives and decodes the first system message block in each control resource set according to the received signal gain and the receiving duration.

[0109] Specifically, to address the problem in the prior art of the lengthy reception process of first system message blocks for multiple resident cells, in this embodiment, the signal strength, i.e., received signal strength (RSSI), is obtained for each resident cell, and the resident cells are compared based on the signal strength, thereby adjusting the received signal gain of the radio frequency module when receiving the first system message block, as well as the duration of the radio frequency module's reception. Subsequently, a decoding resource is allocated to each of the multiple first system message blocks received this time, so that the user equipment can process the multiple first system message blocks in parallel. Subsequently, in accordance with prior art, the user equipment can call relevant hardware resources, such as a hardware accelerator, to perform Fourier transform and decoding processing on the first system message block, thereby achieving better reception efficiency.

[0110] In one embodiment, the processing module includes a second processing module 3B, such as Figure 9 As shown, the second processing module 3B includes:

[0111] The buffer module 3B1 buffers each first system message block in sequence and extracts the signal strength of each resident cell respectively;

[0112] A second parameter generation module 3B2, the second parameter generation module 3B2 is connected to the buffer module 3B1, and the second parameter generation module 3B2 generates a receiving signal gain and a receiving duration of each first system message block according to the signal strength;

[0113] The second receiving module 3B3 extracts each first system message block from the buffer in sequence and decodes the first system message block.

[0114] Specifically, to enable decoding of a large number of first system message blocks, this embodiment employs an offline decoding process for first system message blocks with different cyclic identifiers in the same slot. Specifically, these first system message blocks are received and cached sequentially based on their time-domain order. During reception, the received signal gain and reception duration in the current slot are pre-determined based on the signal strength of each resident cell to enable complete reception of the first system message block. Subsequently, each first system message block is retrieved from the cache in sequence offline and subsequently decoded. This processing method enables decoding of a large number of first system message blocks.

[0115] In one embodiment, the processing module further includes a third processing module 3C, such as Figure 10 As shown, the third processing module 3C includes:

[0116] The third parameter generation module 3C1 receives the first system message block in sequence according to the slot, and generates the received signal gain and reception duration of the first system message block according to the signal strength of the resident cell corresponding to the first system message block

[0117] The third receiving module 3C2 is connected to the third parameter generating module 3C1 . The third receiving module 3C2 receives and decodes the first system message block according to the received signal gain and the receiving duration.

[0118] Specifically, in the case where multiple first system message blocks are located in different slots, to enable reception of such first system message blocks, this embodiment sequentially receives each first system message block online. During the reception process, since each first system message block is located in a different slot, the signal strength of the cell where each first system message block can reside is obtained to determine the received signal gain and reception duration. Decoding is then performed according to existing techniques until all first system message blocks are processed.

[0119] The above are only preferred embodiments of the present invention and do not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A simplified method for receiving a first system message block, characterized in that: include: Step S1: Acquire first system information blocks of multiple campable cells; Step S2: Filtering the first system message block according to the cyclic prefix and slot of the first system message block; Step S3: Processing the first system message blocks having the same cyclic prefix and the same slot in parallel according to the screening result to obtain a decoding result corresponding to each first system message block; The step S2 comprises: Step S21: Classifying the first system message blocks according to the slots to generate a first identifier corresponding to each first system message block; Step S22: respectively obtaining the cyclic prefix of the first system message block, and generating a second identifier of the first system message block according to the cyclic prefix; The screening result includes the first identifier and the second identifier.

2. The simplified receiving method according to claim 1, wherein: The step S3 comprises: Step S31: adjusting the received signal gain and reception duration according to the signal strength of each campable cell; Step S32: Allocate a decoding resource for each of the first system message blocks; Each of the decoding resources is used to decode a control resource set; Step S33: In each of the decoding resources, the first system message block is received and decoded according to the received signal gain and the receiving duration to obtain the decoding result.

3. The simplified receiving method according to claim 1, wherein: After executing step S3, further processing the first system message blocks with different cyclic prefixes in the same slot using a second processing method; The second processing method includes: Step A1: caching each of the first system message blocks in sequence, and extracting the signal strength of each of the campable cells respectively; Step A2: generating a received signal gain and a receiving duration of each first system message block according to the signal strength; Step A3: extract each of the first system message blocks from the buffer in sequence, and decode the first system message blocks.

4. The simplified receiving method according to claim 1, wherein: After executing step S3, a third processing method is further used to process the first system message blocks in different slots; The third processing method includes: Step B1: receiving the first system message block in sequence according to the slot; Step B2: generating a received signal gain and a receiving duration of the first system message block according to the signal strength of the campable cell corresponding to the first system message block; Step B3: Receive and decode the first system message block according to the received signal gain and the receiving duration, and then return to step B1 to receive the next first system message block until all the first system message blocks are received.

5. A simplified receiving system for a first system message block, characterized in that: Used to implement the simplified receiving method according to any one of claims 1 to 4, comprising: An acquisition module, wherein the acquisition module acquires first system message blocks of multiple resident cells; a screening module, the screening module being connected to the obtaining module, and screening the first system message block according to the cyclic prefix and slot of the first system message block; a processing module, wherein the processing module calls a corresponding processing method to parse the first system message block according to the screening result; The screening module includes: a first classification module, which classifies the first system message blocks according to the slots to generate a first identifier corresponding to each first system message block and adds the first identifier to the screening result; The second classification module obtains the cyclic prefix of the first system message block respectively, generates a second identifier of the first system message block according to the cyclic prefix, and adds the second identifier to the screening result.

6. The simplified receiving system according to claim 5, characterized in that The processing module includes a first processing module, and the first processing module includes: a first parameter generation module, configured to adjust a received signal gain and a reception duration according to a signal strength of each of the resident cells; an allocation module, the allocation module being connected to the first parameter generation module and allocating a decoding resource to each of the first system message blocks; A first receiving module is connected to the allocation module, and the first receiving module receives and decodes the first system message block in each decoding resource according to the received signal gain and the receiving duration.

7. The simplified receiving system according to claim 5, characterized in that The processing module includes a second processing module, and the second processing module includes: a cache module, wherein the cache module sequentially caches each of the first system message blocks and respectively extracts the signal strength of each of the resident cells; a second parameter generating module, the second parameter generating module being connected to the cache module, and generating a received signal gain and a receiving duration of each first system message block according to the signal strength; The second receiving module extracts each of the first system message blocks from the buffer in sequence and decodes the first system message blocks.

8. The simplified receiving system according to claim 5, characterized in that The processing module further includes a third processing module, and the third processing module includes: A third parameter generation module, which receives the first system message block in sequence according to the slot, and generates the received signal gain and reception duration of the first system message block according to the signal strength of the resident cell corresponding to the first system message block A third receiving module is connected to the third parameter generating module, and receives and decodes the first system message block according to the received signal gain and the receiving duration.

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