CN111294174A - Method and device for sending and receiving synchronization signal block, storage medium, base station and user terminal - Google Patents

Method and device for sending and receiving synchronization signal block, storage medium, base station and user terminal Download PDF

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CN111294174A
CN111294174A CN201910028424.1A CN201910028424A CN111294174A CN 111294174 A CN111294174 A CN 111294174A CN 201910028424 A CN201910028424 A CN 201910028424A CN 111294174 A CN111294174 A CN 111294174A
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synchronization signal
value
signal blocks
index value
index
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CN111294174B (en
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周化雨
沈兴亚
张晋瑜
潘振岗
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

A sending and receiving method and device of a synchronization signal block, a storage medium, a base station and a user terminal are provided, the method comprises the following steps: determining a first index value i1 and a second index value i2 of x synchronization signal blocks to be transmitted; transmitting the first index value i1 and the second index value i2 through a PBCH of the synchronization signal block. The scheme of the invention can improve the accuracy of the index value received by the UE.

Description

Method and device for sending and receiving synchronization signal block, storage medium, base station and user terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for sending and receiving a synchronization signal block, a storage medium, a base station, and a user terminal.
Background
In the 5G system, a synchronization signal and a broadcast channel are transmitted as a synchronization signal block. Among them, Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), and Physical Broadcast Channel (PBCH) are in a Synchronization Signal Block (SSB).
In the prior art, the time domain positions of the L synchronization signal blocks within a 5ms window are fixed. The indices of the L synchronization signal blocks are arranged consecutively in time domain positions, from 0 to L-1. The transmission time instant of a synchronization signal block within this 5ms window is fixed and the index is also fixed.
In a specific implementation, a User Equipment (UE) obtains timing information by obtaining a synchronization signal block Index (Index). In the licensed spectrum, the sync signal block index is associated with L candidate positions of the sync signal block.
Since, in unlicensed spectrum, DRS or sync blocks need to wait until Listen Before Talk (LBT) or Channel Access Assessment (CAA) is successful before they can be transmitted, the actually transmitted sync blocks may be only a part of the L candidate locations. Therefore, for the index of the actually transmitted synchronization signal block, the UE needs to adopt optimization measures to improve the accuracy of the parsing, such as decoding the information in the PBCH payload of the actually transmitted synchronization signal block.
However, in the related art, the error rate of the UE determining the index value after receiving the synchronization signal block is high.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a method and a device for sending and receiving a synchronization signal block, a storage medium, a base station and a user terminal, which can improve the accuracy of an index value received by UE.
To solve the foregoing technical problem, an embodiment of the present invention provides a method for sending a synchronization signal block, including the following steps: determining a first index value i1 and a second index value i2 of x synchronization signal blocks to be transmitted; transmitting the first index value i1 and the second index value i2 by a PBCH of the synchronization signal block; wherein x is an integer.
Optionally, before determining the first index value i1 and the second index value i2 of the x synchronization signal blocks, the method for sending the synchronization signal blocks further includes: judging whether the x synchronous signal blocks are positioned in the same position group; wherein the time domain positions of the candidate synchronization signal blocks are divided into a plurality of said position groups, each said position group comprising the time domain positions of N synchronization signal blocks, N being an integer.
Optionally, determining the first index value i1 and the second index value i2 of the x synchronization signal blocks to be transmitted includes: if the x sync signal blocks are not located in the same position group, an initial second index value i2 for the x sync signal blocks0Performing value-adding or value-reducing processing to obtain a processed second index value i2, wherein the initial second index value i20An initial group number for indicating transmission of each synchronization signal block; determining a value of indication information to be a preset value, wherein the indication information is carried in PBCH-DMRS signals of the x synchronization signal blocks and is used for indicating whether to perform initial second index values i2 on the x synchronization signal blocks0Performing value-added processing or value-reduced processing; wherein, i20And i2 is an integer.
Optionally, if the x sync signal blocks are not located in the same position group, the x sync signal blocks are located in a consecutive previous group and a consecutive next group, and the initial second index value i2 for the x sync signal blocks0The value-added processing or value-reduced processing comprises the following steps: determining the number t of the synchronous signal blocks positioned in the previous group in the x synchronous signal blocks; initial second index value i2 for t synchronization signal blocks located in previous group0Performing value-added processing to obtain a processed second index value i2 ═ i20+ 1; wherein t is more than or equal to 1 and less than x.
Optionally, if the x sync signal blocks are not located in the same position group, the x sync signal blocks are located in a consecutive previous group and a consecutive next group, and the initial second index value i2 for the x sync signal blocks0The value-added processing or value-reduced processing comprises the following steps: determining the number t of the synchronous signal blocks positioned in the previous group in the x synchronous signal blocks; initial second index value i2 for synchronization signal block in the next group0Performing value reduction processing to obtain a processed second index value i 2-i 20-1; wherein t is more than or equal to 1 and less than x.
Optionally, the sending the first index value i1 and the second index value i2 by a PBCH of the synchronization signal block includes: if the x synchronization signal blocks are located in the same position group, the x synchronization signal blocks are sent to a user terminal, so that the user terminal decodes PBCH (physical broadcast channel) loads of the x synchronization signal blocks to determine initial second index values i2 of the x synchronization signal blocks0。
Optionally, the determining whether the x synchronization signal blocks are located in the same position group includes: sequentially determining a first index value i1 of the x synchronization signal blocks, the first index value i1 being used to indicate a sequence number of each synchronization signal block within the same group; when i1 changes from a larger value to a smaller value, judging that the x synchronous signal blocks to be sent are not located in the same position group; wherein i1 is an integer.
Optionally, the first index value i1 is carried by using PBCH-DMRS; the second index value i2 adopts PBCH load bearing.
To solve the above technical problem, an embodiment of the present invention provides a method for receiving a synchronization signal block, including the following steps: receiving at least a portion of the x synchronization signal blocks; determining a first index value i1 and a second index value i2 according to a PBCH of at least a portion of the x synchronization signal blocks; wherein x is an integer.
Optionally, the time domain positions of the candidate synchronization signal blocks are divided into a plurality of position groups, each of the position groups including the time domain positions of N synchronization signal blocks; wherein N is an integer.
Optionally, determining the first index value i1 and the second index value i2 according to the PBCH of at least a portion of the x synchronization signal blocks comprises: decoding PBCH payload of at least a portion of the x synchronization signal blocks to determine a processed second index value i2, the processed second index value i2 being an initial second index value i2 for the at least a portion of the x synchronization signal blocks0Obtained after value-added processing or value-reduced processing is carried out, wherein the initial second index value i20An initial group number for indicating transmission of each synchronization signal block; determining whether the value of the indication information is preSetting a value, wherein the indication information is carried in the PBCH-DMRS signal of at least part of the x synchronization signal blocks and is used for indicating whether to carry out initial second index value i2 on at least part of the x synchronization signal blocks0Performing value-added processing or value-reduced processing; if the value of the indication information is a preset value, performing a value reduction process or an value increase process on the processed second index value i2 of at least a part of the x synchronization signal blocks to obtain an initial second index value i20(ii) a Wherein, i20And i2 is an integer.
Optionally, if the value of the indication information is a preset value, performing a value reduction process or a value increase process on the processed second index value i2 of at least a part of the x synchronization signal blocks includes: performing a value reduction process on the processed second index values i2 of at least a part of the x synchronization signal blocks to obtain initial second index values i20I 2-1; wherein t is more than or equal to 1 and less than x.
Optionally, if the value of the indication information is a preset value, performing a value reduction process or a value increase process on the processed second index value i2 of at least a part of the x synchronization signal blocks includes: performing value-added processing on the processed second index values i2 of at least a part of the x synchronization signal blocks to obtain initial second index values i20I2+ 1; wherein t is more than or equal to 1 and less than x.
Optionally, the method for receiving the synchronization signal block further includes: if the value of the indication information is a value other than the preset value, obtaining an initial second index value i20＝i2。
Optionally, the method for receiving the synchronization signal block further includes: decoding a PBCH payload of at least a portion of the x synchronization signal blocks if the at least a portion of the x synchronization signal blocks are located in a same location group.
Optionally, the determining whether at least a part of the x synchronization signal blocks are located in the same position group includes: sequentially determining a first index value i1 of at least a portion of the x synchronization signal blocks, the first index value i1 indicating a sequence number of each synchronization signal block within the same group; when i1 changes from a larger value to a smaller value, judging that at least one part of the x synchronous signal blocks are not located in the same position group; wherein i1 is an integer.
Optionally, the first index value i1 is carried by using PBCH-DMRS; the second index value i2 adopts PBCH load bearing.
To solve the foregoing technical problem, an embodiment of the present invention provides a device for sending a synchronization signal block, including: an index value determining module adapted to determine a first index value i1 and a second index value i2 of x synchronization signal blocks to be transmitted; an index value transmitting module adapted to transmit the first index value i1 and the second index value i by a PBCH of the synchronization signal block; wherein x is an integer.
To solve the above technical problem, an embodiment of the present invention provides a receiving apparatus for a synchronization signal block, including: a receiving module adapted to receive at least a portion of the x synchronization signal blocks; an index value determination module adapted to determine a first index value i1 and a second index value i2 based on a PBCH of at least a portion of the x synchronization signal blocks; wherein x is an integer.
In order to solve the above technical problem, an embodiment of the present invention provides a storage medium having stored thereon computer instructions, which when executed perform the steps of the method for transmitting the above-mentioned synchronization signal block or the steps of the method for receiving the above-mentioned synchronization signal block.
In order to solve the above technical problem, an embodiment of the present invention provides a base station, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the above method for transmitting a synchronization signal block when executing the computer instructions.
In order to solve the above technical problem, an embodiment of the present invention provides a user terminal, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the receiving method of the synchronization signal block when executing the computer instructions.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, a first index value i1 and a second index value i2 of x synchronous signal blocks to be transmitted are determined; by using the above scheme, the base station determines the first index value i1 and the second index value i2 of x synchronization signal blocks to be transmitted and transmits the first index value i1 and the second index value i2, so that the UE can determine the second index value i2 after receiving the x synchronization signal blocks, thereby improving the accuracy of the index value received by the UE.
Further, in this embodiment of the present invention, the base station determines whether the x synchronization signal blocks are located in the same position group, and if not, performs initial second index i2 on the x synchronization signal blocks0Performing value-added processing or value-reduced processing, and then transmitting, and using indication information in the synchronization signal blocks to indicate whether the value-added processing or the value-reduced processing is performed, so that after receiving the x synchronization signal blocks, the UE can determine the initial second index value i2 according to the processed second index value i20Therefore, the accuracy of the UE in judging the index value of the received synchronous signal block is further improved.
Further, in the embodiment of the present invention, after determining the number t of synchronization signal blocks located in the previous group, the initial second index value i2 for the t synchronization signal blocks located in the previous group may be obtained0Performing value-added processing, and also performing initial second index value i2 of synchronization signal block in the next group0And the value reduction processing is carried out, so that more processing modes are provided, and the user experience is improved.
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Fig. 1 is a flowchart of a method for transmitting a synchronization signal block according to an embodiment of the present invention;
FIG. 2 is a flowchart of one embodiment of step S11 of FIG. 1;
fig. 3 to 6 are schematic diagrams of four different working scenarios according to the embodiment of the present invention;
fig. 7 is a flowchart of a method for receiving a synchronization signal block according to an embodiment of the present invention;
FIG. 8 is a flowchart of one embodiment of step S72 of FIG. 7;
fig. 9 is a schematic structural diagram of an apparatus for transmitting a synchronization signal block according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a receiving apparatus for a synchronization signal block according to an embodiment of the present invention.
Detailed Description
In the sync signal block of the 5G system, the time domain positions of L sync signal blocks within one 5ms window are fixed. The indices of the L synchronization signal blocks are arranged consecutively in time domain positions, from 0 to L-1. The transmission time instant of a synchronization signal block within this 5ms window is fixed and the index is also fixed.
A Discovery Reference Signal (DRS) is defined in LTE Release 12, and is used for synchronization (time-frequency tracking) and measurement of a Secondary Cell (SCell) by a user equipment, and may be referred to as a "Discovery" function of the SCell. The DRS has the advantage that the DRS is a long-period signal, and the long-period signal has small interference on the whole network.
In Licensed Assisted Access (LAA) of LTE, DRS can be just used for the discovery function of SCell on unlicensed spectrum because of its long-period characteristic to reduce interference to LAA system and heterogeneous systems (e.g., Wifi system) sharing unlicensed spectrum. The duration of the LAA DRS is 12 OFDM symbols within one non-empty subframe to further reduce interference to LAA systems and inter-systems.
There are two cases of the appearance of LAA DRS:
the first condition is as follows: the user equipment may assume that the LAA DRS may occur in any subframe in a DRS Measurement Timing Configuration (DMTC), and the user equipment may assume that the LAADRS occurs in a first subframe in the DMTC including one PSS, one SSS, and a Cell Reference Signal (CRS). That is, the user equipment assumes that: the base station monitors (Listen before talk, LBT) before transmitting in the DMTC, and if it monitors that the channel is idle, the base station transmits a DRS on a non-empty subframe.
Case two: when the LAA DRS is transmitted together with a Physical Downlink Shared Channel (PDSCH)/Physical Downlink Control Channel (PDCCH)/enhanced PDCCH (epdcch), the LAA DRS may only appear in subframe 0 and subframe 5. That is, if the DMTC contains subframe 0 or 5 and the user equipment needs to detect PDCCH/EPDCCH or receive PDSCH on subframe 0 or 5, the user equipment assumes that DRS is present only on subframe 0 or 5.
The Remaining Minimum System Information (RMSI) in 5G is equivalent to System Information (System Information Block1, SIB1) in LTE, which includes main System Information other than a main System Module (MIB). RMSI is carried in PDSCH, which is scheduled through PDCCH. The PDSCH carrying RMSI is generally referred to as RMSI PDSCH and the PDCCH of schedule RMSI PDSCH is generally referred to as RMSI PDCCH.
On the NR unlicensed spectrum, a synchronization signal block needs to be defined so that the user equipment can detect the NR unlicensed spectrum cell in the cell search. The synchronization signal block may be included in the DRS as a whole including the synchronization signal block; or DRS is not defined and the synchronization signal block exists independently.
On the NR unlicensed spectrum, the base station needs to perform LBT before transmitting the DRS or the synchronization signal block, only when the signal is monitored to be idle, the DRS or the synchronization signal block is transmitted, otherwise, after a certain period of time, the base station performs LBT again. The DRS or the Synchronization signal block is transmitted within a certain transmission window, where the transmission window may be configured by the base station and the ue, or may be configured by the RRC signaling through DMTC or SMTC (Synchronization Measurement Timing Configuration).
Since LBT needs to be performed, the DRS or synchronization signal block needs to be shifted backward for a certain time. To support the feature of backward shifting of DRS or synchronization signal blocks on the unlicensed spectrum, multiple predefined time domain locations of the DRS or synchronization signal blocks are required.
On the unlicensed spectrum of NR, LBT may also be required before the base station sends the RMSI, and the RMSI is sent only when it is idle, otherwise, after a certain period of time, the base station performs LBT again. The RSMI is transmitted within a certain transmission window, which may be agreed by the base station and the user equipment, or may be configured by MIB or RRC signaling.
Due to the need for LBT, the RMSI needs to be translated backwards for a certain time. To support the backward-shifting nature of RMSI over unlicensed spectrum, the RMSI needs to have multiple predefined temporal locations.
The UE needs to obtain timing information of the synchronization signal block. The Timing information may also be referred to as Frame Timing (Frame Timing) information, or Half-Frame Timing (Half-Frame Timing) information, and is generally used to indicate the Timing of a Frame or a Half-Frame corresponding to a detected synchronization signal. After obtaining the Frame timing information, the UE obtains the complete timing information of the cell corresponding to the synchronization signal block through the System Frame Number (SFN). After the UE obtains the half-frame timing information, the UE obtains the complete timing information of the cell corresponding to the synchronization signal block through the half-frame indication (the first half frame or the second half frame) and the SFN.
The inventors of the present invention have studied to find that, in the prior art, the UE often obtains the timing information by acquiring the synchronization signal block index. In the licensed spectrum, the sync signal block index is associated with L candidate positions of the sync signal block. Specifically, when L is 4, the lower two Bits (2 last signaling Bits, 2 LSBs) of the synchronization Signal block index are carried by using PBCH Demodulation Reference Signal (PBCH-DMRS); when L >4, the lower three bits (3 LSBs) of the synchronization signal block index are carried by PBCH-DMRS; when L is 64, the lower three Bits (3 LSBs) of the synchronization Signal Block index are carried using PBCH-DMRS, and the upper three Bits (3 Most Signal Bits, 3MSBs) of the synchronization Signal Block index are carried using PBCH Payload (Payload) or Master Information Block (MIB).
Since in the unlicensed spectrum, the DRS or synchronization signal block needs to wait until LBT or CAA succeeds before it can be transmitted, the actually transmitted synchronization signal block may be only a part of the L candidate locations. Therefore, for the index of the actually transmitted synchronization signal block, the UE needs to adopt optimization measures to improve the accuracy of the parsing, such as decoding the information in the PBCH payload of the actually transmitted synchronization signal block.
The inventor of the present invention further finds, through research, that, in the prior art, time-domain positions of candidate synchronization signal blocks are divided into a plurality of position groups, each of the position groups includes time-domain positions of N synchronization signal blocks, and a problem that x synchronization signal blocks to be transmitted are not located in the same position group easily occurs, so that it is difficult for a UE to perform soft combining decoding on PBCH when receiving the synchronization signal blocks, and finally, an error rate of determining an index value is high.
In the embodiment of the invention, a first index value i1 and a second index value i2 of x synchronous signal blocks to be transmitted are determined; by using the above scheme, the base station determines the first index value i1 and the second index value i2 of x synchronization signal blocks to be transmitted and transmits the first index value i1 and the second index value i2, so that the UE can determine the second index value i2 after receiving the x synchronization signal blocks, thereby improving the accuracy of the index value received by the UE.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, fig. 1 is a flowchart of a method for sending a synchronization signal block according to an embodiment of the present invention. The method for transmitting the synchronization signal block may be used for a base station, and may include steps S11 to S12:
step S11: determining a first index value i1 and a second index value i2 of x synchronization signal blocks to be transmitted;
step S12: transmitting the first index value i1 and the second index value i2 through a PBCH of the synchronization signal block.
In a specific implementation of step S11, the first index value i1 is used to indicate an intra-group sequence number of each synchronization signal block, for example, 0, 1, 2, 3; the second index value i2 is used to indicate the group number of each synchronization signal block, e.g. 0, 1, 2, 3, … …, 7.
Further, the first index value i1 may be carried by PBCH-DMRS; the second index value i2 may employ PBCH load bearer.
Wherein the time domain positions of the Candidate (Candidate) synchronization signal blocks may be divided into a plurality of said position groups, each of said position groups may comprise the time domain positions of N synchronization signal blocks, N being an integer.
Specifically, the time domain positions of the candidate synchronization signal blocks can be defined as Y, so that Y/N position groups are shared, and each position group has N synchronization signal blocks. The second index value i2 has Y/N selectable values, and the first index value i1 has N selectable values.
In a specific implementation, the base station may perform LBT before transmitting the synchronization signal block or DRS, and if acquisition of the transmission opportunity fails, the base station may perform LBT before the next synchronization signal block or DRS. Where a synchronization signal block or DRS with index i may be defined as a synchronization signal block or DRS with index i relative to a candidate synchronization signal block location, where i may be used to indicate that a transmission location is located at the first optional time domain location, and 0< ═ i < Y.
More specifically, the UE may acquire the intra-group index i1 by detecting the PBCH-DMRS. The UE detects the PBCH load and obtains an inter-group index i 2. In general, the UE may derive the index of the synchronization signal block index at the candidate synchronization signal block position as i ═ nxi 2+ i 1. At some time, the base station may modify the initial inter-group index i2 to i20In this case, the UE needs to recover i2 to i2 after solving i20And further can derive the index of the sync signal block index at the candidate sync signal block position as i-N × i20+i1。
The UE assumes that the number of actually transmitted synchronization signal blocks is up to x after the base station obtains a successful transmission opportunity.
In a specific implementation of step S12, the base station may send the x synchronization signal blocks to the ue, so that the ue decodes the PBCH payload of the x synchronization signal blocks to determine the processed second PBCH payloadAn index value i2, and determining the initial second index value i2 according to the indication information0。
It is noted that in the embodiment of the present invention, there may be a case where the x synchronization signal blocks are not located in the same position group. That is, of the x sync signal blocks actually transmitted by the base station, i2 of the first t sync signal blocks is n, and i2 of the last (x-t) sync signal blocks is n + 1. In this way, it is difficult for the UE to soft-combine decode the PBCH within the x synchronization signal blocks when the PBCH loading is released.
Referring to fig. 2, fig. 2 is a flowchart of an embodiment of step S11 in fig. 1. The step of determining the first index value i1 and the second index value i2 of the x sync signal blocks to be transmitted may include steps S21 to S22, each of which is described below.
In step S21, if the x sync signal blocks are not located in the same position group, an initial second index value i2 for the x sync signal blocks0Performing value-adding or value-reducing processing to obtain a processed second index value i2, wherein the initial second index value i20For indicating an initial group number for transmitting each synchronization signal block.
Wherein, i20And i2 is an integer.
In a specific implementation manner of the embodiment of the present invention, if the x synchronization signal blocks are not located in the same position group, the x synchronization signal blocks are located in a consecutive previous group and a consecutive next group, and the initial second index value i2 for the x synchronization signal blocks is0The value-added processing or value-reduced processing comprises the following steps: determining the number t of the synchronous signal blocks positioned in the previous group in the x synchronous signal blocks; initial second index value i2 for t synchronization signal blocks located in previous group0Performing value-added processing to obtain a processed second index value i2 ═ i20+ 1; wherein t is more than or equal to 1 and less than x.
In the embodiment of the invention, the initial second index value i2 of t synchronous signal blocks in the previous group is obtained by0Performing value-added processing to make the processed second index value i2 identical to the sync signal block in the next group (for example, x-t identical to each other)Step signal block) so that the UE can soft-combine decode the PBCH within the x synchronization signal blocks when de-loading the PBCH.
In another specific implementation manner of the embodiment of the present invention, if the x synchronization signal blocks are not located in the same position group, the x synchronization signal blocks are located in a consecutive previous group and a consecutive next group, and the initial second index value i2 for the x synchronization signal blocks is0The value-added processing or value-reduced processing comprises the following steps: determining the number t of the synchronous signal blocks positioned in the previous group in the x synchronous signal blocks; initial second index value i2 for sync signal blocks in the next group (e.g. x-t sync signal blocks)0Performing value reduction processing to obtain a processed second index value i 2-i 20-1; wherein t is more than or equal to 1 and less than x.
In the embodiment of the invention, the initial second index value i2 of the synchronization signal block in the latter group is obtained0The value reduction process may be performed such that the processed second index value i2 is equal to the second index value i2 of the synchronization signal blocks (e.g., t synchronization signal blocks) in the previous group, so that the UE can perform soft combining decoding on the PBCH within the x synchronization signal blocks when the PBCH load is released.
In step S22, determining a value of indication information to be a preset value, wherein the indication information is carried in the PBCH-DMRS signals of the x synchronization signal blocks and used for indicating whether to determine initial second index values i2 for the x synchronization signal blocks0And performing value-adding processing or value-reducing processing.
In the embodiment of the present invention, the UE may know whether there is a situation that i2 of the synchronization signal block is modified by detecting the indication information (for example, using one or more preset bits) carried by the PBCH-DMRS. Therefore, the accuracy of the index value received by the UE can be improved.
In the embodiment of the present invention, when the x synchronization signal blocks are not located in the same position group, after determining the number t of synchronization signal blocks located in the previous group, the initial second index value i2 for the t synchronization signal blocks located in the previous group may be obtained0Performing value-added processing, and also performing initial processing on the synchronization signal blocks in the next groupStarting second index value i20And the value reduction processing is carried out, so that more processing modes are provided, and the user experience is improved.
In the embodiment of the present invention, the base station determines whether the x synchronization signal blocks are located in the same position group, and if not, the base station performs initial second indexing i2 on the x synchronization signal blocks0Performing value-added processing or value-reduced processing, and then transmitting, and using indication information in the synchronization signal blocks to indicate whether the value-added processing or the value-reduced processing is performed, so that after receiving the x synchronization signal blocks, the UE can determine the initial second index value i2 according to the processed second index value i20Therefore, the accuracy of the UE in judging the index value of the received synchronous signal block is further improved.
It should be noted that, in the embodiment of the present invention, there is also a case where the x synchronization signal blocks are located in the same position group.
With continued reference to fig. 1, in a specific implementation of step S12, the step of transmitting the first index value i1 and the second index value i2 by PBCH of the synchronization signal block may include: if the x synchronization signal blocks are located in the same position group, the x synchronization signal blocks are sent to a user terminal, so that the user terminal decodes PBCH (physical broadcast channel) loads of the x synchronization signal blocks to determine initial second index values i2 of the x synchronization signal blocks0。
In the embodiment of the present invention, when the x synchronization signal blocks are located in the same position group, the accuracy and decoding efficiency of the index value received by the UE can be improved by setting the user terminal to directly decode the PBCH load of the x synchronization signal blocks.
Further, the step of determining whether the x synchronization signal blocks are located in the same position group may include: sequentially determining a first index value i1 of the x synchronization signal blocks, the first index value i1 being used to indicate a sequence number of each synchronization signal block within the same group; when i1 changes from a larger value to a smaller value, judging that the x synchronous signal blocks to be sent are not located in the same position group; wherein i1 is an integer.
In the embodiment of the present invention, since the first index value i1 is used to indicate the intra-group sequence number of each synchronization signal block to be transmitted, it can be determined more accurately whether x synchronization signal blocks are located in the same position group by determining whether i1 is changed from a larger value to a smaller value.
It should be noted that other methods may also be used to determine whether the x synchronization signal blocks are located in the same position group, which is not limited in this embodiment of the present invention.
Fig. 3 to 6 are schematic diagrams of four different working scenarios in the embodiment of the present invention.
Referring to fig. 3, the time domain positions of the candidate sync signal blocks may be 16, and each position group has 4 sync signal blocks, so that 16/4 is 4 position groups in total. The second index value i2 has 16/4 ═ 4 selectable values, and the first index value i1 has 4 selectable values.
The UE assumes that the number of the actually transmitted synchronization signal blocks is up to 2 after the base station obtains the successful transmission opportunity. When a 15kHz subcarrier spacing is employed, the duration of the truly transmitted synchronization signal block or DRS is up to 1 millisecond.
In a particular implementation, the first index value i1 may be indicated by a lower 1 bit. The lower 1 bit is carried by PBCH-DMRS. The second index value i2 is indicated by a high 2 bit. The high 2 bits are carried by the PBCH payload.
In a specific work scenario, there are two types of situations:
first, the 2 synchronization signal blocks actually transmitted by the base station are located in the same position group, i.e. i2 is the same, for example, optional time domain positions 0, 1, and 2 shown in fig. 3. It can be appreciated that the UE can soft-combine decode the PBCH within the 2 synchronization signal blocks when the PBCH loading is de-loaded.
In a specific implementation, the UE may determine whether the PBCHs of any two received synchronization signal blocks need to be soft-combined and decoded by judging whether the two received synchronization signal blocks are in the same group, and if the two received synchronization signal blocks are in the same group, the UE determines that the PBCHs of the two synchronization signal blocks need to be soft-combined and decoded.
Secondly, of the 2 synchronization signal blocks actually transmitted by the base station, the 2 synchronization signal blocks actually transmitted by the base station are not located in the same position group, i2 ═ n of the first 1 synchronization signal block, and i2 ═ n +1 of the last 1 synchronization signal block, for example, optional time domain position 3 shown in fig. 3. It can be appreciated that it is difficult for the UE to soft-combine decode the PBCH within the 2 synchronization signal blocks when the PBCH loading is de-loaded.
In a specific implementation, the base station may modify i2 ═ n of a last group of (2-t) synchronization signal blocks, or i2 ═ n +1 of a previous group of t synchronization signal blocks, so that the UE can perform soft combining decoding on PBCH of the 4 synchronization signal blocks. And, the UE knows whether i2 of the last 1 or the first 1 synchronization signal blocks is modified by detecting the indication information (e.g. preset bits) carried by the PBCH-DMRS.
Referring to fig. 4, the time domain positions of the candidate sync signal blocks may be 16, and each position group has 4 sync signal blocks, so that 16/4 is 4 position groups in total. The second index value i2 has 16/4 ═ 4 selectable values, and the first index value i1 has 4 selectable values.
The UE assumes that the number of actually transmitted synchronization signal blocks is up to 4 after the base station obtains a successful transmission opportunity. When a 15kHz subcarrier spacing is employed, the duration of the truly transmitted synchronization signal block or DRS is up to 2 milliseconds.
In a particular implementation, the first index value i1 may be indicated by a low 2 bit. The low 2 bits are carried by the PBCH-DMRS. The second index value i2 is indicated by a high 2 bit. The high 2 bits are carried by the PBCH payload.
In a specific implementation, the UE may determine whether the PBCHs of any two received synchronization signal blocks need to be soft-combined and decoded by judging whether the two received synchronization signal blocks are in the same group, and if the two received synchronization signal blocks are in the same group, the UE determines that the PBCHs of the two synchronization signal blocks need to be soft-combined and decoded.
In a specific implementation, the base station may modify i2 ═ n of a subsequent group of (4-t) synchronization signal blocks, or i2 ═ n +1 of a previous group of t synchronization signal blocks, so that the UE can perform soft combining decoding on PBCH of the 4 synchronization signal blocks. And, the UE knows whether i2 of the last 1 or the first 1 synchronization signal blocks is modified by detecting the indication information (e.g. preset bits) carried by the PBCH-DMRS.
Referring to fig. 5, the time domain positions of the candidate sync signal blocks may be 32, and each position group has 4 sync signal blocks, so that 32/4 is 8 position groups in total. The second index value i2 has 32/4 ═ 8 selectable values, and the first index value i1 has 4 selectable values.
The UE assumes that the number of actually transmitted synchronization signal blocks is up to 4 after the base station obtains a successful transmission opportunity. When a 30kHz subcarrier spacing is employed, the duration of the truly transmitted synchronization signal block or DRS is up to 1 millisecond.
In a particular implementation, the first index value i1 may be indicated by a low 2 bit. The low 2 bits are carried by the PBCH-DMRS. The second index value i2 is indicated by the upper 3 bits. The high 3 bits are carried by the PBCH payload.
In a specific implementation, the UE may determine whether the PBCHs of any two received synchronization signal blocks need to be soft-combined and decoded by judging whether the two received synchronization signal blocks are in the same group, and if the two received synchronization signal blocks are in the same group, the UE determines that the PBCHs of the two synchronization signal blocks need to be soft-combined and decoded.
In a specific implementation, the base station may modify i2 ═ n of a subsequent group of (4-t) synchronization signal blocks, or i2 ═ n +1 of a previous group of t synchronization signal blocks, so that the UE can perform soft combining decoding on PBCH of the 4 synchronization signal blocks. And, the UE knows whether i2 of the last 1 or the first 1 synchronization signal blocks is modified by detecting the indication information (e.g. preset bits) carried by the PBCH-DMRS.
Referring to fig. 6, the time domain positions of the candidate sync signal blocks may be 32, and each position group has 4 sync signal blocks, so that 32/4 is 8 position groups in total. The second index value i2 has 32/4 ═ 8 selectable values, and the first index value i1 has 4 selectable values.
The UE assumes that the number of the synchronization signal blocks actually transmitted by the base station is up to 8 after obtaining the successful transmission opportunity. When a 30kHz subcarrier spacing is employed, the duration of the truly transmitted synchronization signal block or DRS is up to 2 milliseconds.
In a particular implementation, the first index value i1 may be indicated by a low 2 bit. The low 2 bits are carried by the PBCH-DMRS. The second index value i2 is indicated by the upper 3 bits. The high 3 bits are carried by the PBCH payload.
In a specific implementation, the UE may determine whether the PBCHs of any two received synchronization signal blocks need to be soft-combined and decoded by judging whether the two received synchronization signal blocks are in the same group, and if the two received synchronization signal blocks are in the same group, the UE determines that the PBCHs of the two synchronization signal blocks need to be soft-combined and decoded.
In a specific implementation, the base station may modify i2 ═ n of a subsequent group of (8-t) synchronization signal blocks, or i2 ═ n +1 of a previous group of t synchronization signal blocks, so that the UE can perform soft combining decoding on PBCH of the 8 synchronization signal blocks. And, the UE knows whether i2 of the last 1 or the first 1 synchronization signal blocks is modified by detecting the indication information (e.g. preset bits) carried by the PBCH-DMRS.
As can be seen from fig. 3 to fig. 6, the scheme of the embodiment of the present invention may be used in the above-mentioned various working scenarios, and is helpful to improve the accuracy of the index value received by the UE.
In the embodiment of the present invention, the base station determines the first index value i1 and the second index value i2 of x synchronization signal blocks to be transmitted, and transmits the first index value i1 and the second index value i2 to the user terminal, so that the UE can determine the second index value i2 after receiving the x synchronization signal blocks, thereby improving the accuracy of the index value received by the UE.
Fig. 7 is a flowchart of a method for receiving a synchronization signal block, where the method for receiving a synchronization signal block may be used for a UE, and the method may further include steps S71 to S72:
step S71: receiving at least a portion of the x synchronization signal blocks;
step S72: determining a first index value i1 and a second index value i2 according to a PBCH of at least a portion of the x synchronization signal blocks.
Wherein x is an integer.
In the implementation of step S71, the base station may send out x synchronization signal blocks, but the UE may only receive one or a few of them.
Wherein the time domain positions of the candidate synchronization signal blocks may be divided into a plurality of position groups, each of the position groups comprising the time domain positions of the N synchronization signal blocks; wherein N is an integer.
In a specific implementation of step S72, the UE may determine the first index value i1 and the second index value i2 according to the PBCH of at least a portion of the x synchronization signal blocks.
Referring to fig. 8, fig. 8 is a flowchart of an embodiment of step S72 in fig. 7. The step of determining the first index value i1 and the second index value i2 according to the PBCH of at least a portion of the x synchronization signal blocks may include steps S81 to S83, each of which is described below.
In step S81, the UE decodes the PBCH payload of at least a portion of the x synchronization signal blocks to determine a processed second index value i2, where the processed second index value i2 is obtained by the base station performing an increment process or a decrement process on an initial second index value i20 of at least a portion of the x synchronization signal blocks, and the initial second index value i20 is used to indicate an initial group number for transmitting each synchronization signal block.
In step S82, the UE determines whether a value of indication information is a preset value, where the indication information is carried in the PBCH-DMRS signal of at least a portion of the x synchronization signal blocks and used to indicate whether to perform value-increasing processing or value-decreasing processing on the initial second index value i20 of at least a portion of the x synchronization signal blocks.
Further, if the value of the indication information is a value other than the preset value, the UE obtains an initial second index value i20＝i2。
In the embodiment of the present invention, the UE may know whether there is a situation that i2 of the synchronization signal block is modified by detecting the indication information (for example, using one or more preset bits) carried by the PBCH-DMRS. Therefore, the accuracy of the index value received by the UE can be improved.
In step S83, if the value of the indication information is a preset value, the UE performs a value reduction process or an value increase process on the processed second index values i2 of at least a portion of the x synchronization signal blocks to obtain initial second index values i20。
Wherein, i20And i2 is an integer.
Further, if the value of the indication information is a preset value, the step of performing a value reduction process or a value increase process on the processed second index value i2 of at least a portion of the x synchronization signal blocks may include: performing a value reduction process on the processed second index values i2 of at least a part of the x synchronization signal blocks to obtain initial second index values i20I 2-1; wherein t is more than or equal to 1 and less than x.
Further, if the value of the indication information is a preset value, the step of performing a value reduction process or a value increase process on the processed second index value i2 of at least a portion of the x synchronization signal blocks may include: performing value-added processing on the processed second index values i2 of at least a part of the x synchronization signal blocks to obtain initial second index values i20I2+ 1; wherein t is more than or equal to 1 and less than x.
In the embodiment of the present invention, when the value of the indication information is a preset value, the UE may perform value reduction processing on the second index value i2 of at least a part of the x synchronization signal blocks, and may also perform value increase processing on the processed second index value i2 of at least a part of the x synchronization signal blocks, which is beneficial to providing more processing manners and improving user experience.
In the embodiment of the present invention, the UE determines, by determining the indication information and whether the x synchronization signal blocks are located in the same position group, and if not, the UE performs initial second index i2 on the x synchronization signal blocks0After the value-added processing or the value-reduced processing is performed, the UE may be enabled to determine the initial second index value i2 according to the processed second index value i2 after receiving the x synchronization signal blocks0Therefore, the accuracy of the UE in judging the index value of the received synchronous signal block is further improved.
In this embodiment of the present invention, the indication information may be a certain bit in the PBCH-DMRS for synchronization signal block index information. The certain bit may be any one or more of three bits for synchronization signal block index information in the PBCH-DMRS, e.g., the third bit (i.e., the highest bit for synchronization signal block index information in the PBCH-DMRS). At this time, the other two bits used in the synchronization signal block index information in the PBCH-DMRS carry the first index value i1, and the PBCH payload carries the second index value i 2.
In the embodiment of the present invention, the second index value i2 may be carried in three bits for the synchronization signal block index information in the PBCH payload, and may also be carried in three bits for the synchronization signal block index information in the PBCH payload, plus one bit for indicating whether the synchronization signal block belongs to the first half frame or the second half frame in the PBCH payload.
Further, the UE may decode a PBCH payload of at least a portion of the x synchronization signal blocks if the at least a portion of the x synchronization signal blocks are located in a same location group.
In the embodiment of the present invention, when the x synchronization signal blocks are located in the same position group, the accuracy and the decoding efficiency of the index value received by the UE can be improved by setting the UE to perform soft combining decoding on the PBCH load of the x synchronization signal blocks.
Further, the step of the UE determining whether at least a part of the x synchronization signal blocks are located in the same location group may include: sequentially determining a first index value i1 of at least a portion of the x synchronization signal blocks, the first index value i1 indicating a sequence number of each synchronization signal block within the same group; when i1 changes from a larger value to a smaller value, judging that at least one part of the x synchronous signal blocks are not located in the same position group; wherein i1 is an integer.
In the embodiment of the present invention, since the first index value i1 is used to indicate the intra-group sequence number of each synchronization signal block to be transmitted, it can be determined more accurately whether x synchronization signal blocks are located in the same position group by determining whether i1 is changed from a larger value to a smaller value.
In a preferred implementation of the embodiment of the present invention, i1 may be set to jump from N to 0. However, the UE may only see a portion of the x synchronization signal blocks, and it is difficult to determine whether to jump from N to 0, and it can be determined more accurately whether the x synchronization signal blocks are in the same location group by determining whether i1 changes from a larger value to a smaller value.
It should be noted that other methods may also be used to determine whether the x synchronization signal blocks are located in the same position group, which is not limited in this embodiment of the present invention.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a device for sending a synchronization signal block according to an embodiment of the present invention. The apparatus for transmitting the synchronization signal block may be used in a base station, and may further include:
an index value determining module 91 adapted to determine a first index value i1 and a second index value i2 of x synchronization signal blocks to be transmitted;
an index value transmitting module 92 adapted to transmit the first index value i1 and the second index value i2 by a PBCH of the synchronization signal block; wherein x is an integer.
For the principle, specific implementation and beneficial effects of the apparatus for sending the synchronization signal block, please refer to the foregoing and the related descriptions about the sending method of the synchronization signal block shown in fig. 1 to fig. 6, which are not repeated herein.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a receiving apparatus for a synchronization signal block according to an embodiment of the present invention. The receiving device of the synchronization signal block may be used for a UE, and may further include:
a receiving module 101 adapted to receive at least a portion of the x synchronization signal blocks;
an index value determination module 102 adapted to determine a first index value i1 and a second index value i2 based on the PBCH of at least a portion of the x synchronization signal blocks; wherein x is an integer.
For the principle, specific implementation and beneficial effects of the receiving apparatus of the synchronization signal block, please refer to the foregoing and the related descriptions of the receiving method of the synchronization signal block shown in fig. 7 to fig. 8, which are not repeated herein.
Embodiments of the present invention also provide a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the steps of the methods for sending the synchronization signal blocks shown in fig. 1 to 6 described above are executed, and the steps of the methods for receiving the synchronization signal blocks shown in fig. 7 to 8 described above are also executed. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.
The embodiment of the present invention further provides a base station, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the computer instructions to execute the steps of the transmission method related to the synchronization signal block shown in fig. 1 to 6 and the steps of the transmission method related to the synchronization signal block shown in fig. 1 to 6. The base station includes, but is not limited to, a base station, a server, a cloud platform, and the like.
The embodiment of the present invention further provides a user terminal, which includes a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the steps of the receiving method related to the synchronization signal block shown in fig. 7 to 8 when executing the computer instructions. The user terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (22)

1. A method for transmitting a synchronization signal block, comprising the steps of:
determining a first index value i1 and a second index value i2 of x synchronization signal blocks to be transmitted;
transmitting the first index value i1 and the second index value i2 by a PBCH of the synchronization signal block;
wherein x is an integer.
2. The method of claim 1, further comprising, before determining the first index value i1 and the second index value i2 of the x synchronization signal blocks:
judging whether the x synchronous signal blocks are positioned in the same position group;
wherein the time domain positions of the candidate synchronization signal blocks are divided into a plurality of said position groups, each said position group comprising the time domain positions of N synchronization signal blocks, N being an integer.
3. The method of claim 2, wherein determining the first index value i1 and the second index value i2 of x sync signal blocks to be transmitted comprises:
if the x sync signal blocks are not located in the same position group, an initial second index value i2 for the x sync signal blocks0Performing value-adding or value-reducing processing to obtain a processed second index value i2, wherein the initial second index value i20An initial group number for indicating transmission of each synchronization signal block;
determining a value of indication information to be a preset value, wherein the indication information is carried in PBCH-DMRS signals of the x synchronization signal blocks and is used for indicating whether to perform initial second index values i2 on the x synchronization signal blocks0Performing value-added processing or value-reduced processing;
wherein, i20And i2 is an integer.
4. The method of claim 3, wherein if the x sync signal blocks are not in the same position group, the x sync signal blocks are in a previous group and a next group, and an initial second index value i2 is given to the x sync signal blocks0The value-added processing or value-reduced processing comprises the following steps:
determining the number t of the synchronous signal blocks positioned in the previous group in the x synchronous signal blocks;
initial second index value i2 for t synchronization signal blocks located in previous group0Performing value-added processing to obtain a processed second index value i2 ═ i20+1；
Wherein t is more than or equal to 1 and less than x.
5. The method of claim 3, wherein if the x sync signal blocks are not in the same position group, the x sync signal blocks are in a previous group and a next group, and an initial second index value i2 is given to the x sync signal blocks0The value-added processing or value-reduced processing comprises the following steps:
determining the number t of the synchronous signal blocks positioned in the previous group in the x synchronous signal blocks;
initial second index value i2 for synchronization signal block in the next group0Performing value reduction processing to obtain a processed second index value i 2-i 20-1；
Wherein t is more than or equal to 1 and less than x.
6. The method of claim 2, wherein transmitting the first index value i1 and the second index value i2 via a PBCH of the synchronization signal block comprises:
if the x synchronization signal blocks are located in the same position group, the x synchronization signal blocks are sent to a user terminal, so that the user terminal decodes PBCH (physical broadcast channel) loads of the x synchronization signal blocks to determine initial second index values i2 of the x synchronization signal blocks0。
7. The method of claim 2, wherein determining whether the x sync signal blocks are in a same position group comprises:
sequentially determining a first index value i1 of the x synchronization signal blocks, the first index value i1 being used to indicate a sequence number of each synchronization signal block within the same group;
when i1 changes from a larger value to a smaller value, judging that the x synchronous signal blocks to be sent are not located in the same position group;
wherein i1 is an integer.
8. The method of claim 1,
the first index value i1 is carried by adopting PBCH-DMRS;
the second index value i2 adopts PBCH load bearing.
9. A method for receiving a synchronization signal block, comprising the steps of:
receiving at least a portion of the x synchronization signal blocks;
determining a first index value i1 and a second index value i2 according to a PBCH of at least a portion of the x synchronization signal blocks;
wherein x is an integer.
10. The method of receiving a synchronization signal block as claimed in claim 9, wherein the time domain positions of the candidate synchronization signal blocks are divided into a plurality of position groups, each of the position groups comprising the time domain positions of N synchronization signal blocks;
wherein N is an integer.
11. The method of receiving synchronization signal blocks of claim 10, wherein determining a first index value i1 and a second index value i2 based on a PBCH of at least a portion of the x synchronization signal blocks comprises:
decoding PBCH payload of at least a portion of the x synchronization signal blocks to determine a processed second index value i2, the processed second index value i2 being an initial second index value i2 for the at least a portion of the x synchronization signal blocks0Obtained after value-added processing or value-reduced processing is carried out, wherein the initial second index value i20An initial group number for indicating transmission of each synchronization signal block;
determining whether a value of indication information is a preset value, the indicationInformation is carried in the PBCH-DMRS signal of at least a part of the x synchronization signal blocks for indicating whether to use the initial second index value i2 of at least a part of the x synchronization signal blocks0Performing value-added processing or value-reduced processing;
if the value of the indication information is a preset value, performing a value reduction process or an value increase process on the processed second index value i2 of at least a part of the x synchronization signal blocks to obtain an initial second index value i20；
Wherein, i20And i2 is an integer.
12. The method of claim 11, wherein if the value of the indication information is a preset value, performing a value reduction process or an value increase process on the processed second index value i2 of at least a portion of the x sync signal blocks comprises:
performing a value reduction process on the processed second index values i2 of at least a part of the x synchronization signal blocks to obtain initial second index values i20＝i2-1；
Wherein t is more than or equal to 1 and less than x.
13. The method of claim 11, wherein if the value of the indication information is a preset value, performing a value reduction process or an value increase process on the processed second index value i2 of at least a portion of the x sync signal blocks comprises:
performing value-added processing on the processed second index values i2 of at least a part of the x synchronization signal blocks to obtain initial second index values i20＝i2+1；
Wherein t is more than or equal to 1 and less than x.
14. The method of receiving a synchronization signal block according to claim 11, further comprising:
if the value of the indication information is a value other than the preset value, obtaining an initial second index value i20＝i2。
15. The method for receiving a synchronization signal block according to claim 10, further comprising:
decoding a PBCH payload of at least a portion of the x synchronization signal blocks if the at least a portion of the x synchronization signal blocks are located in a same location group.
16. The method of claim 10, wherein determining whether at least a portion of the x sync signal blocks are located in a same location group comprises:
sequentially determining a first index value i1 of at least a portion of the x synchronization signal blocks, the first index value i1 indicating a sequence number of each synchronization signal block within the same group;
when i1 changes from a larger value to a smaller value, judging that at least one part of the x synchronous signal blocks are not located in the same position group;
wherein i1 is an integer.
17. The method of receiving a synchronization signal block according to claim 9,
the first index value i1 is carried by adopting PBCH-DMRS;
the second index value i2 adopts PBCH load bearing.
18. An apparatus for transmitting a synchronization signal block, comprising:
an index value determining module adapted to determine a first index value i1 and a second index value i2 of x synchronization signal blocks to be transmitted;
an index value transmitting module adapted to transmit the first index value i1 and the second index value i by a PBCH of the synchronization signal block;
wherein x is an integer.
19. An apparatus for receiving a synchronization signal block, comprising:
a receiving module adapted to receive at least a portion of the x synchronization signal blocks;
an index value determination module adapted to determine a first index value i1 and a second index value i2 based on a PBCH of at least a portion of the x synchronization signal blocks;
wherein x is an integer.
20. A storage medium having stored thereon computer instructions, wherein said computer instructions are operable to perform the steps of a method of transmitting a synchronization signal block according to any of claims 1 to 8, or to perform the steps of a method of receiving a synchronization signal block according to any of claims 9 to 17.
21. A base station comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor when executing the computer instructions performs the steps of the method of transmitting a synchronization signal block according to any of claims 1 to 8.
22. A user terminal comprising a memory and a processor, said memory having stored thereon computer instructions executable on said processor, characterized in that said processor, when executing said computer instructions, performs the steps of the method of reception of a synchronization signal block according to any of claims 9 to 17.
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