CN110740017B - Synchronization signal block sending method and device and network equipment - Google Patents
Synchronization signal block sending method and device and network equipment Download PDFInfo
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- CN110740017B CN110740017B CN201810790679.7A CN201810790679A CN110740017B CN 110740017 B CN110740017 B CN 110740017B CN 201810790679 A CN201810790679 A CN 201810790679A CN 110740017 B CN110740017 B CN 110740017B
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- H04L5/00—Arrangements affording multiple use of the transmission path
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- H—ELECTRICITY
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Abstract
The invention provides a method, a device and network equipment for sending a synchronous signal block, wherein the method comprises the following steps: sending a synchronous signal block at a target time domain position and a target frequency domain position in a synchronous signal block sending period; the sending period of the synchronization signal block of the target cell is the same as the sending period of the synchronization signal block of the adjacent cell of the target cell; the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period; the target frequency domain position is the same as the frequency domain position of the synchronization signal block sent by the adjacent cell of the target cell in the synchronization signal block sending period; in the embodiment of the invention, the SINR and/or RSRP measured based on the synchronous signal block can be directly used as a network planning index without influencing the downlink data service rate of the serving cell.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a network device for sending a synchronization signal block.
Background
The transmission mode of the 5G synchronization signal block is very flexible, and most similar to LTE (long term evolution), the first existing transmission scheme of the 5G synchronization signal block is as follows:
1) Time domain configuration: as shown in fig. 1, each cell transmits a time domain position using the same synchronization signal block transmission period T as that of the adjacent cell and the same synchronization signal block as that of the adjacent cell.
2) Frequency domain position: as shown in fig. 2, each cell uses the same frequency domain synchronization signal Block transmission position as that of the adjacent cell, that is, the center frequency point of the transmission SSB (SS Block, synchronization signal Block) of each cell is the same on the initial Bandwidth Part (initial BWP) of the initial access.
Furthermore, it is easy to think that the second conventional 5G synchronization signal block transmission scheme can use the same time domain arrangement as the first scheme, as shown in fig. 1, but in the frequency domain, each cell transmits a synchronization signal block using a different frequency domain position from that of the neighboring cell, as shown in fig. 3.
As shown in fig. 1, the SMTC (SSB Measurement Timing Configuration, measurement time domain Configuration information of a synchronization signal block) is a Measurement Configuration for measuring a 5G synchronization signal block, which is configured for a connected terminal by a system, and specifically includes a synchronization signal block Measurement period (Measurement window periodicity), a synchronization signal block Measurement window length (Measurement duration), and a position (offset) of the Measurement window length in a period. For the first and second existing schemes, the synchronization signal block measurement period is configured as T, which is the same as the synchronization signal block transmission period. The synchronization signal block measurement window length is configured to be the same as the synchronization signal block transmission time length.
Although the transmission method of the first conventional scheme is relatively simple, when the synchronization Signal block is performed according to the first conventional scheme, the SINR (Signal to Interference plus Noise Ratio) measured based on the 5G synchronization Signal block cannot be used as the 5G network planning index. The specific reason is as follows:
the network planning index is a parameter used for guiding network construction and reflecting a network construction performance target. The planning metrics of an LTE (long term evolution) network are CRS-RSRP (Reference Signal Receiving Power) and CRS-SINR based on common Reference signals CRS. The CRS-RSRP represents the strength of the CRS, so that the coverage performance of the network after network construction is reflected; the CRS-SINR represents the interference condition of the CRS by a service channel, and the CRS-SINR reflects the service rate performance of the network after the network is built because the SINR has a mapping relation with the service rate.
5G cancels common reference signal CRS and defines that RSRP and SINR measurement can be based on secondary synchronization signal SSS in the synchronization signal block. Although the RSRP and SINR measurements may also be based on other reference signals (e.g., CSI-RS), since SINR measurements based on 5G synchronization signal blocks (referred to as SS-RSRP and SS-SINR) do not occupy additional overhead and have good industrial maturity, the feasibility of using SS-RSRP and SS-SINR based on 5G synchronization signal block measurements as network planning indicators needs to be considered in priority.
When the existing scheme is adopted to send the synchronous signal blocks, the SS-RSRP measured based on the synchronous signal blocks can directly reflect network coverage, but because the synchronous signal blocks of all cells are sent at the same frequency, the SINR measured based on the synchronous signal blocks can only reflect the interference condition of the synchronous signal blocks of each cell by the synchronous signal blocks of other cells, the SS-SINR value is completely unrelated to the cell load, the mapping relation with the service rate cannot be formed, and the SS-SINR cannot be used for network planning indexes directly.
When the second conventional scheme is adopted to send the synchronization signal blocks, although the synchronization signal blocks of each cell are sent at the same time and at different frequencies, the SINR measured based on the synchronization signal blocks can reflect the interference of a service channel on the synchronization signal blocks, so that the SINR can be mapped to a service rate and used as a planning index, the second conventional scheme has a great problem that when the central frequency points sent by the 5G synchronization signal blocks are different, a pilot frequency measurement mechanism is required to be adopted when a terminal measures the synchronization signal blocks of adjacent cells, and a receiver frequency point is switched to an adjacent cell to measure the synchronization signal blocks. Since the terminal measures the synchronization signal block of the neighboring cell very frequently in some scenarios (for example, when the edge user needs to perform cell switching), if the synchronization signal block is sent by using the second existing scheme, the downlink data service rate of the serving cell will be seriously affected.
Disclosure of Invention
The invention aims to provide a method, a device and network equipment for sending a synchronization signal block, which aim to solve the problem that in the prior art, the SINR measured based on a 5G synchronization signal block cannot be used as a network planning index or the measurement of the 5G synchronization signal block influences the service rate of downlink data service of a serving cell.
In order to achieve the above object, an embodiment of the present invention provides a synchronization signal block transmission method, applied to a target cell, including:
the target cell sends a synchronous signal block at a target time domain position and a target frequency domain position in a synchronous signal block sending period;
the sending period of the synchronization signal block of the target cell is the same as the sending period of the synchronization signal block of the adjacent cell of the target cell;
the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period; the target frequency domain position is the same as the frequency domain position of the synchronization signal block sent by the adjacent cell of the target cell in the synchronization signal block sending period.
Wherein a start position of a synchronization signal block transmission period of the target cell is the same as a start position of a synchronization signal block transmission period of an adjacent cell of the target cell.
Wherein the method further comprises:
determining the initial position of a synchronous signal block sending period;
determining a target time domain offset between the target time domain position and the initial position of a synchronous signal block sending period;
and determining the target time domain position according to the target time domain offset.
And the time domain offset of the time domain position of the synchronization signal block sent by the adjacent cell of the target cell and the initial position of the synchronization signal block sending period is different from the target time domain offset.
Wherein, the step of determining the starting position of the sending period of the synchronization signal block comprises:
determining a System Frame Number (SFN) of a frame meeting a first formula according to the first formula; wherein the content of the first and second substances,
the first formula is:
t is the time length of the sending period of the synchronous signal block;
and determining the frame header of the frame meeting the first formula as the initial position of the sending period of the synchronous signal block.
Wherein the step of determining the target time domain offset between the target time domain position and the start position of the synchronization signal block transmission period comprises:
according to a second formula, determining the target time domain offset between the target time domain position and the initial position of the synchronous signal block sending period as
Wherein, the first and the second end of the pipe are connected with each other,
the second formula is: PCI mod N = M;
wherein, PCI is the physical cell identification of the target cell; n is an integer greater than or equal to 1; t is the time length of the sending period of the synchronous signal block; m is any one value from 0 to N-1;
and the value of M corresponding to the target cell is different from the value of M corresponding to the adjacent cell of the target cell.
And the adjacent cells of the target cell and the target cell are frame synchronization cells.
Wherein the method further comprises:
configuring measurement time domain configuration information of a measurement synchronization signal block for a terminal; wherein the measurement time domain configuration information includes: a synchronization signal block measurement period, a synchronization signal block measurement window length, and an offset of the synchronization signal block measurement window length in the synchronization signal block measurement period.
Wherein the synchronization signal block measurement period is less than the synchronization signal block transmission period;
the length of the measurement window of the synchronous signal block is equal to the length of the sending time of the synchronous signal block signal.
An embodiment of the present invention further provides a synchronization signal block sending apparatus, which is applied to a target cell, and includes:
the sending module is used for sending the synchronous signal block at a target time domain position and a target frequency domain position in a synchronous signal block sending period;
the sending period of the synchronization signal block of the target cell is the same as the sending period of the synchronization signal block of the adjacent cell of the target cell;
the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period; the target frequency domain position is the same as the frequency domain position of the synchronization signal block sent by the adjacent cell of the target cell in the synchronization signal block sending period.
An embodiment of the present invention further provides a network device, where the network device is a target cell, the network device includes a processor and a transceiver, and the processor is configured to control the transceiver to execute the following processes:
the target cell sends a synchronous signal block at a target time domain position and a target frequency domain position in a synchronous signal block sending period;
the sending period of the synchronization signal block of the target cell is the same as the sending period of the synchronization signal block of the adjacent cell of the target cell;
the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period; the target frequency domain position is the same as the frequency domain position of the synchronization signal block sent by the adjacent cell of the target cell in the synchronization signal block sending period.
Wherein a start position of a synchronization signal block transmission period of the target cell is the same as a start position of a synchronization signal block transmission period of an adjacent cell of the target cell.
Wherein the processor is further configured to:
determining the initial position of a synchronous signal block sending period;
determining a target time domain offset between the target time domain position and the initial position of a synchronous signal block sending period;
and determining the target time domain position according to the target time domain offset.
And the time domain offset of the time domain position of the synchronization signal block transmitted by the adjacent cell of the target cell and the initial position of the synchronization signal block transmission period is different from the target time domain offset.
Wherein the processor is further configured to:
determining a System Frame Number (SFN) of a frame meeting a first formula according to the first formula; wherein the content of the first and second substances,
the first formula is:
t is the time length of the sending period of the synchronous signal block;
and determining the frame header of the frame meeting the first formula as the initial position of the sending period of the synchronous signal block.
Wherein the processor is further configured to:
according to a second formula, determining the target time domain offset between the target time domain position and the initial position of the synchronous signal block sending period as
Wherein, the first and the second end of the pipe are connected with each other,
the second formula is: PCI mod N = M;
wherein, PCI is the physical cell identification of the target cell; n is an integer greater than or equal to 1; t is the time length of the sending period of the synchronous signal block; m is any value from 0 to N-1;
and the value of M corresponding to the target cell is different from the value of M corresponding to the adjacent cell of the target cell.
And the adjacent cells of the target cell and the target cell are frame synchronization cells.
Wherein the processor is further configured to:
configuring measurement time domain configuration information of a measurement synchronization signal block for a terminal; wherein the measurement time domain configuration information includes: a synchronization signal block measurement period, a synchronization signal block measurement window length, and an offset of the synchronization signal block measurement window length in the synchronization signal block measurement period.
Wherein the synchronization signal block measurement period is less than the synchronization signal block transmission period;
the length of the measurement window of the synchronous signal block is equal to the length of the sending time of the synchronous signal block signal.
An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps in the synchronization signal block sending method as described above.
The technical scheme of the invention at least has the following beneficial effects:
in the method, the device and the network equipment for sending the synchronous signal block of the embodiment of the invention, the target cell sends the synchronous signal block by adopting the same period, different time domain positions and the same frequency domain position as the adjacent cell; because the time domain resources of the synchronization signal blocks sent by each cell are different and the frequency domain resources are the same, the SINR and/or RSRP measured based on the synchronization signal blocks can be directly used as a network planning index; furthermore, because the frequency domain resources of the synchronization signal blocks sent by each cell are the same, the terminal does not need to adopt a different frequency measurement mechanism when measuring the synchronization signal blocks of the adjacent cells, and therefore, the service rate of the downlink data of the serving cell is not influenced.
Drawings
FIG. 1 shows a schematic time domain transmission of a synchronization signal block;
FIG. 2 shows one of the frequency domain transmission diagrams of a synchronization signal block;
FIG. 3 is a second schematic diagram of frequency domain transmission of a synchronization signal block;
fig. 4 is a schematic diagram illustrating steps of a synchronization signal block transmission method according to an embodiment of the present invention;
fig. 5 is a schematic diagram of time-domain transmission of a synchronization signal block according to an embodiment of the present invention;
fig. 6 is a diagram illustrating a second time-domain transmission diagram of a synchronization signal block according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a synchronization signal block transmitting apparatus according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a network device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 4, an embodiment of the present invention provides a synchronization signal block transmission method, applied to a target cell, including:
and step 41, the target cell sends the synchronization signal block at the target time domain position and the target frequency domain position in the synchronization signal block sending period. The synchronization Signal Block, i.e., synchronization Signal Block, may be referred to as SSB for short.
As shown in fig. 5, a synchronization signal block transmission period of the target cell is the same as a synchronization signal block transmission period of an adjacent cell of the target cell; the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period.
As shown in fig. 2, the target frequency domain position is the same as the frequency domain position of the synchronization signal block transmitted by the neighboring cell of the target cell in the synchronization signal block transmission period.
The target cell mentioned in the above embodiment of the present invention may be any cell in the network, as shown in fig. 5 and fig. 2, if the cell 1 is the target cell, the cell 2, the cell 3, and the cell 4 are neighboring cells of the target cell; if cell 2 is the target cell, then cell 1, cell 3 and cell 4 are the neighboring cells of the target cell; if the cell 3 is a target cell, the cell 1, the cell 2 and the cell 4 are adjacent cells of the target cell; if cell 4 is the target cell, then cell 1, cell 2, and cell 3 are neighbors of the target cell.
It should be noted that the number of neighboring cells of the target cell is not limited herein. Typically, each cell maintains a neighbor list, which may be updated periodically or based on some trigger condition, and is not limited in this respect.
As shown in fig. 5, in the above embodiment of the present invention, the starting position of the synchronization signal block transmission period of the target cell is the same as the starting position of the synchronization signal block transmission period of the neighboring cell of the target cell. That is, the time length of the synchronization signal block transmission period of the target cell is the same as the time length of the synchronization signal block transmission period of the adjacent cell, and the end position of the synchronization signal block transmission period of the target cell is the same as the end position of the synchronization signal block transmission period of the adjacent cell.
In the above embodiment of the present invention, since each cell (including the target cell and the neighboring cell) transmits at the same frequency and non-simultaneously, the SINR measured based on the synchronization signal block can reflect the interference of the traffic channel to the synchronization signal block, and thus can be mapped to the traffic rate, and the SINR measured based on the synchronization signal block can be used as a network planning index. And because the RSRP measured based on the synchronization signal block can directly reflect the network coverage, the RSRP measured based on the synchronization signal block can also be used as a network planning index. The SINR and/or RSRP measurement is carried out based on the auxiliary synchronization signal SSS in the 5G broadcast signal (namely, the synchronization signal block SSB), additional system overhead occupation is not needed, the industrial maturity is good, and the stability of network planning index acquisition is improved.
Furthermore, because each cell (including the target cell and the adjacent cell) is transmitted at the same frequency and non-simultaneously, and a terminal does not need to adopt a different frequency measurement mechanism when measuring the synchronous signal block of the adjacent cell, the synchronous signal block transmission method provided by the embodiment of the invention does not influence the downlink data service rate of the serving cell, and improves the data transmission efficiency.
Further, in the above embodiment of the present invention, the method further includes:
determining the initial position of a synchronous signal block sending period;
determining a target time domain offset between the target time domain position and the initial position of a synchronous signal block sending period;
and determining the target time domain position according to the target time domain offset.
In order to ensure that the target time domain position is different from the time domain position of the neighboring cell of the target cell for sending the synchronization signal block in the synchronization signal block sending period, in the above embodiment of the present invention, the time domain offset between the time domain position of the neighboring cell of the target cell for sending the synchronization signal block and the start position of the synchronization signal block sending period is different from the target time domain offset.
Preferably, in the above embodiment of the present invention, the step of determining the starting position of the synchronization signal block transmission period includes:
determining a System Frame Number (SFN) of a frame meeting a first formula according to the first formula; wherein the content of the first and second substances,
the first formula is:
t is the time length of the sending period of the synchronous signal block;
and determining the frame header of the frame meeting the first formula as the initial position of the sending period of the synchronous signal block.
Preferably, the duration of the synchronization signal block transmission period is generally 20ms, 40ms, 80ms, 160ms, and the like, and is not limited herein.
Further, the step of determining the target time domain offset between the target time domain position and the start position of the synchronization signal block transmission period includes:
according to a second formula, determining the target time domain offset between the target time domain position and the starting position of the synchronous signal block sending period as
Wherein the content of the first and second substances,
the second formula is: PCI mod N = M;
the time unit of T is the same as the time unit of 5, for example, the time unit of T is milliseconds ms, and the time unit of 5 is also milliseconds ms.
Wherein, PCI is the physical cell identification of the target cell; n is an integer greater than or equal to 1; t is the time length of the sending period of the synchronous signal block; m is any one value from 0 to N-1;
wherein the value of M corresponding to the target cell is different from the value of M corresponding to the neighbor cell of the target cell.
For example, when N =2,t =40ms, N =4, and the target cell has 3 neighboring cells, i.e., cell a, cell B, and cell C.
Then PCI mod 4=0 corresponds to the target cell, that is, the target time domain offset between the target time domain position of the synchronization signal block sent by the target cell and the starting position of the synchronization signal block sending period is 0;
PCI mod 4=1 corresponds to the cell a, that is, the time domain offset between the time domain position of the synchronization signal block sent by the cell a and the start position of the synchronization signal block sending period is T/4, that is, 10ms;
PCI mod 4=2 corresponding to the cell B, that is, the time domain offset between the time domain position of the synchronization signal block sent by the cell B and the starting position of the synchronization signal block sending period is 2T/4, that is, 20ms;
PCI mod 4=3 corresponds to cell C, i.e., the time domain offset between the time domain position where cell C transmits the synchronization signal block and the start position of the synchronization signal block transmission period is 3T/4, i.e., 30ms.
It should be noted that, a value of the physical cell identifier PCI mod N of the target cell is different from a value of the physical cell identifier PCI mod N of the neighboring cell of the target cell, for example, the PCI of the target cell and the PCI of the neighboring cell are continuously allocated; and the adjacent cell of the target cell and the target cell are frame synchronization cells.
In the above embodiment of the present invention, the process of determining the time domain position of the synchronization signal block sent by multiple cells (which are adjacent cells) is as follows:
allocating a Physical Cell Identity (PCI) to each adjacent cell, and synchronizing frames of each adjacent cell;
determining the initial position of the sending period of the synchronous signal block of each adjacent cell;
determining the time domain position of each adjacent cell for sending the synchronous signal block:
for example, in a cell with PCI mod 4=0, the time domain offset of the SSB transmission position from the start position of the synchronization signal block transmission cycle is 0;
in a cell with PCI mod 4=1, the time domain offset of the SSB sending position compared with the starting position of the sending period of the synchronization signal block is T/4;
in a PCI mod 4=2 cell, the time domain offset of the SSB sending position compared with the starting position of the sending period of the synchronization signal block is T/2;
in a cell with PCI mod 4=3, the time domain offset of the SSB transmission position from the start position of the synchronization signal block transmission period is 3T/4.
And finally, determining the transmission time length of each synchronization signal block by each adjacent cell, wherein the transmission time length is related to the maximum number of the transmission beams of the synchronization signal block SSB, and when the maximum number of the transmission beams of the SSB is 8, the transmission time length of the SSB of each adjacent cell is 2ms.
Further, in the above embodiment of the present invention, the method further includes:
configuring measurement time domain configuration information (SMTC) of a measurement synchronization signal block for a terminal; wherein the measurement time domain configuration information includes: a synchronization signal block measurement period, a synchronization signal block measurement window length, and an offset of the synchronization signal block measurement window length in the synchronization signal block measurement period. The offset of the synchronization signal block measurement window length in the synchronization signal block measurement period is specifically used for indicating the position information of the synchronization signal block measurement window length in the synchronization signal block measurement period.
In order to ensure that a connected terminal can measure a synchronization signal block of a serving cell and a neighboring cell, a synchronization signal block measurement period is less than a synchronization signal block transmission period, and a synchronization signal block measurement window length is equal to a synchronization signal block signal transmission time length.
Fig. 6 shows a preferred embodiment of a time-domain transmission method of a synchronization signal block according to an embodiment of the present invention, wherein a synchronization signal block transmission period T is 40ms, and when a synchronization signal block SSB transmits 8 beams, a time-domain configuration of a synchronization signal block signal transmission scheme is as follows:
the synchronization signal block transmission period is 40ms, the PCI mod 4 of each of the cells 1 to 4 is 0,1,2, and 3, and the time domain offsets of the corresponding SSB transmission positions from the start position of the synchronization signal block transmission period are 0, 10ms, 20ms, and 30ms, respectively. The transmission duration of the SSB is 2ms (8 beams); in the SMTC, the measurement period of the sync signal block is 10ms, the measurement window length of the sync signal block is 2ms, and the offsets offset of the start positions of the measurement window length of the sync signal block, which is longer than the measurement period of the sync signal block, are all 0.
In summary, in the above embodiments of the present invention, the target cell transmits the synchronization signal block with the same period, different time domain positions, and the same frequency domain position as the neighboring cell; because the time domain resources of the synchronization signal blocks sent by each cell are different and the frequency domain resources are the same, the SINR and/or RSRP measured based on the synchronization signal blocks can be directly used as a network planning index; furthermore, because the frequency domain resources of the synchronization signal blocks sent by each cell are the same, the terminal does not need to adopt a different frequency measurement mechanism when measuring the synchronization signal blocks of the adjacent cells, and therefore the downlink data service rate of the serving cell is not influenced.
As shown in fig. 7, an embodiment of the present invention further provides a synchronization signal block transmitting apparatus, which is applied to a target cell, and includes:
a sending module 71, configured to send a synchronization signal block at a target time domain position and a target frequency domain position within a synchronization signal block sending period;
the sending period of the synchronization signal block of the target cell is the same as the sending period of the synchronization signal block of the adjacent cell of the target cell;
the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period; the target frequency domain position is the same as the frequency domain position of the synchronization signal block sent by the adjacent cell of the target cell in the synchronization signal block sending period.
Preferably, in the above embodiment of the present invention, the starting position of the synchronization signal block transmission period of the target cell is the same as the starting position of the synchronization signal block transmission period of the neighboring cell of the target cell.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
the first determining module is used for determining the starting position of the sending period of the synchronous signal block;
a second determining module, configured to determine a target time domain offset between the target time domain position and a start position of a synchronization signal block sending period;
and a third determining module, configured to determine the target time domain position according to the target time domain offset.
Preferably, in the above embodiment of the present invention, the time domain offset between the time domain position of the synchronization signal block transmitted by the cell adjacent to the target cell and the start position of the synchronization signal block transmission period is different from the target time domain offset.
Preferably, in the above embodiment of the present invention, the first determining module includes:
the first determining submodule is used for determining a system frame number SFN of the frame meeting the first formula according to the first formula; wherein the content of the first and second substances,
the first formula is:
t is the time length of the sending period of the synchronous signal block;
and the second determining submodule is used for determining the frame header of the frame meeting the first formula as the initial position of the sending period of the synchronous signal block.
Preferably, in the above embodiment of the present invention, the second determining module includes:
a third determining submodule, configured to determine, according to a second formula, a target time domain offset between the target time domain position and the start position of the synchronization signal block transmission period as
Wherein the content of the first and second substances,
the second formula is: PCI mod N = M;
wherein, PCI is the physical cell identification of the target cell; n is an integer greater than or equal to 1; t is the time length of the sending period of the synchronous signal block; m is any value from 0 to N-1;
wherein the value of M corresponding to the target cell is different from the value of M corresponding to the neighbor cell of the target cell.
Preferably, in the above embodiments of the present invention, the neighboring cells of the target cell and the target cell are frame synchronization cells.
Preferably, in the above embodiment of the present invention, the apparatus further includes:
the configuration module is used for configuring the measurement time domain configuration information of the measurement synchronization signal block for the terminal; wherein the measurement time domain configuration information includes: a synchronization signal block measurement period, a synchronization signal block measurement window length, and an offset of the synchronization signal block measurement window length in the synchronization signal block measurement period.
Preferably, in the above embodiment of the present invention, the synchronization signal block measurement period is smaller than the synchronization signal block transmission period;
the length of the measurement window of the synchronous signal block is equal to the length of the sending time of the synchronous signal block signal.
In summary, in the above embodiments of the present invention, the target cell transmits the synchronization signal block with the same period, different time domain positions, and the same frequency domain position as the neighboring cell; because the time domain resources of the synchronization signal blocks sent by each cell are different and the frequency domain resources are the same, the SINR and/or RSRP measured based on the synchronization signal blocks can be directly used as a network planning index; furthermore, because the frequency domain resources of the synchronization signal blocks sent by each cell are the same, the terminal does not need to adopt a different frequency measurement mechanism when measuring the synchronization signal blocks of the adjacent cells, and therefore the downlink data service rate of the serving cell is not influenced.
It should be noted that the synchronization signal block transmission apparatus provided in the embodiments of the present invention is an apparatus capable of executing the synchronization signal block transmission method, and all embodiments of the synchronization signal block transmission method are applicable to the apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 8, an embodiment of the present invention further provides a network device, where the network device is a target cell, the network device includes a processor 800 and a transceiver 810, and the processor 800 is configured to control the transceiver 810 to perform the following processes:
the target cell sends a synchronous signal block at a target time domain position and a target frequency domain position in a synchronous signal block sending period;
the sending period of the synchronization signal block of the target cell is the same as the sending period of the synchronization signal block of the adjacent cell of the target cell;
the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period; the target frequency domain position is the same as the frequency domain position of the synchronization signal block sent by the adjacent cell of the target cell in the synchronization signal block sending period.
Preferably, in the above embodiment of the present invention, the starting position of the synchronization signal block transmission period of the target cell is the same as the starting position of the synchronization signal block transmission period of the neighboring cell of the target cell.
Preferably, in the above embodiments of the present invention, the processor 800 is further configured to:
determining the initial position of a synchronous signal block sending period;
determining a target time domain offset between the target time domain position and the initial position of a synchronous signal block sending period;
and determining the target time domain position according to the target time domain offset.
Preferably, in the above embodiment of the present invention, the time domain offset between the time domain position of the synchronization signal block transmitted by the cell adjacent to the target cell and the start position of the synchronization signal block transmission period is different from the target time domain offset.
Preferably, in the above embodiment of the present invention, the processor 800 is further configured to:
determining a System Frame Number (SFN) of a frame meeting a first formula according to the first formula; wherein the content of the first and second substances,
the first formula is:
t is the time length of the sending period of the synchronous signal block;
and determining the frame header of the frame meeting the first formula as the initial position of the sending period of the synchronous signal block.
Preferably, in the above embodiment of the present invention, the processor 800 is further configured to:
according to a second formula, determining the target time domain offset between the target time domain position and the initial position of the synchronous signal block sending period as
Wherein, the first and the second end of the pipe are connected with each other,
the second formula is: PCI mod N = M;
wherein, PCI is the physical cell identification of the target cell; n is an integer greater than or equal to 1; t is the time length of the sending period of the synchronous signal block; m is any one value from 0 to N-1;
wherein the value of M corresponding to the target cell is different from the value of M corresponding to the neighbor cell of the target cell.
Preferably, in the above embodiments of the present invention, the neighboring cells of the target cell and the target cell are frame synchronization cells.
Preferably, in the above embodiment of the present invention, the processor 800 is further configured to:
configuring measurement time domain configuration information of a measurement synchronization signal block for a terminal; wherein the measurement time domain configuration information includes: a synchronization signal block measurement period, a synchronization signal block measurement window length, and an offset of the synchronization signal block measurement window length in the synchronization signal block measurement period.
Preferably, in the above embodiment of the present invention, the synchronization signal block measurement period is smaller than the synchronization signal block transmission period;
the length of the measurement window of the synchronous signal block is equal to the length of the sending time of the synchronous signal block signal.
In summary, in the above embodiments of the present invention, the target cell transmits the synchronization signal block with the same period, different time domain positions, and the same frequency domain position as the neighboring cell; because the time domain resources of the synchronization signal blocks sent by each cell are different and the frequency domain resources are the same, the SINR and/or RSRP measured based on the synchronization signal blocks can be directly used as a network planning index; furthermore, because the frequency domain resources of the synchronization signal blocks sent by each cell are the same, the terminal does not need to adopt a different frequency measurement mechanism when measuring the synchronization signal blocks of the adjacent cells, and therefore the downlink data service rate of the serving cell is not influenced.
It should be noted that, the network device provided in the embodiments of the present invention is a network device capable of executing the above synchronization signal block sending method, and all embodiments of the synchronization signal block sending method are applicable to the network device and can achieve the same or similar beneficial effects.
An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored, and when the computer program is executed by a processor, the computer program implements each process in the above-described synchronization signal block sending method embodiment, and can achieve the same technical effect, and details are not described here to avoid repetition. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block or blocks.
These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the foregoing is directed to the preferred embodiment of the present invention, it will be appreciated by those skilled in the art that various changes and modifications may be made therein without departing from the principles of the invention as set forth in the appended claims.
Claims (20)
1. A method for sending a synchronization signal block, applied to a target cell, includes:
sending a synchronization signal block at a target time domain position and a target frequency domain position in a synchronization signal block sending period of the target cell;
the sending period of the synchronization signal block of the target cell is the same as the sending period of the synchronization signal block of the adjacent cell of the target cell;
the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period; the target frequency domain position is the same as the frequency domain position of the synchronization signal block sent by the adjacent cell of the target cell in the synchronization signal block sending period.
2. The method of claim 1, wherein a start position of the synchronization signal block transmission period of the target cell is the same as a start position of the synchronization signal block transmission period of the neighboring cell of the target cell.
3. The method of claim 2, further comprising:
determining the initial position of a synchronous signal block sending period;
determining a target time domain offset between the target time domain position and the initial position of a synchronous signal block sending period;
and determining the target time domain position according to the target time domain offset.
4. The method of claim 3, wherein the target time domain offset and the time domain position of the neighboring cell of the target cell for transmitting the synchronization signal block are different from the time domain offset of the start position of the synchronization signal block transmission period.
5. The method of claim 3, wherein the step of determining the start position of the synchronization signal block transmission period comprises:
determining a System Frame Number (SFN) of a frame meeting a first formula according to the first formula; wherein, the first and the second end of the pipe are connected with each other,
the first formula is:
t is the synchronization signal blockThe duration of the sending period;
and determining the frame header of the frame meeting the first formula as the initial position of the sending period of the synchronous signal block.
6. The method of claim 3, wherein the step of determining the target time domain offset from the start of the synchronization signal block transmission period comprises:
according to a second formula, determining the target time domain offset between the target time domain position and the starting position of the synchronous signal block sending period as
Wherein the content of the first and second substances,
the second formula is: PCImod N = M;
wherein, PCI is the physical cell identification of the target cell; n is an integer greater than or equal to 1; t is the time length of the sending period of the synchronous signal block; m is any one value from 0 to N-1;
wherein the value of M corresponding to the target cell is different from the value of M corresponding to the neighbor cell of the target cell.
7. The method of claim 6, wherein the target cell and the neighboring cells of the target cell are frame synchronization cells.
8. The method of claim 1, further comprising:
configuring measurement time domain configuration information of a measurement synchronization signal block for a terminal; wherein the measurement time domain configuration information includes: a synchronization signal block measurement period, a synchronization signal block measurement window length, and an offset of the synchronization signal block measurement window length in the synchronization signal block measurement period.
9. The method of claim 8, wherein the synchronization signal block measurement period is less than the synchronization signal block transmission period;
the length of the measurement window of the synchronous signal block is equal to the length of the sending time of the synchronous signal block signal.
10. A synchronization signal block transmitting apparatus applied to a target cell, comprising:
the sending module is used for sending the synchronous signal block at a target time domain position and a target frequency domain position in a synchronous signal block sending period;
the sending period of the synchronization signal block of the target cell is the same as the sending period of the synchronization signal block of the adjacent cell of the target cell;
the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period; the target frequency domain position is the same as the frequency domain position of the synchronization signal block sent by the adjacent cell of the target cell in the synchronization signal block sending period.
11. A network device, the network device being applied to a target cell, the network device comprising a processor and a transceiver, wherein the processor is configured to control the transceiver to perform the following process:
sending a synchronous signal block at a target time domain position and a target frequency domain position in a synchronous signal block sending period of the target cell;
the sending period of the synchronization signal block of the target cell is the same as the sending period of the synchronization signal block of the adjacent cell of the target cell;
the target time domain position is different from the time domain position of the adjacent cell of the target cell for sending the synchronous signal block in the synchronous signal block sending period; the target frequency domain position is the same as the frequency domain position of the synchronization signal block sent by the adjacent cell of the target cell in the synchronization signal block sending period.
12. The network device of claim 11, wherein a starting position of the synchronization signal block transmission period of the target cell is the same as a starting position of the synchronization signal block transmission period of the neighboring cell of the target cell.
13. The network device of claim 12, wherein the processor is further configured to:
determining the initial position of a synchronous signal block sending period;
determining a target time domain offset between the target time domain position and the initial position of a synchronous signal block sending period;
and determining the target time domain position according to the target time domain offset.
14. The network device of claim 13, wherein the target time offset and the time offset of the time domain position of the synchronization signal block transmitted by the neighboring cell of the target cell are different from the start position of the synchronization signal block transmission period.
15. The network device of claim 13, wherein the processor is further configured to:
determining a System Frame Number (SFN) of a frame meeting a first formula according to the first formula; wherein, the first and the second end of the pipe are connected with each other,
the first formula is:
t is the time length of the sending period of the synchronous signal block;
and determining a frame header of a frame meeting the first formula as the initial position of the sending period of the synchronous signal block.
16. The network device of claim 13, wherein the processor is further configured to:
according to a second formula, determining the target time domain offset between the target time domain position and the initial position of the synchronous signal block sending period as
Wherein the content of the first and second substances,
the second formula is: PCImod N = M;
wherein, PCI is the physical cell identification of the target cell; n is an integer greater than or equal to 1; t is the time length of the sending period of the synchronous signal block; m is any one value from 0 to N-1;
wherein the value of M corresponding to the target cell is different from the value of M corresponding to the neighbor cell of the target cell.
17. The network device of claim 16, wherein the target cell and the neighboring cells of the target cell are frame synchronization cells.
18. The network device of claim 11, wherein the processor is further configured to:
configuring measurement time domain configuration information of a measurement synchronization signal block for a terminal; wherein the measurement time domain configuration information includes: a synchronization signal block measurement period, a synchronization signal block measurement window length, and an offset of the synchronization signal block measurement window length in the synchronization signal block measurement period.
19. The network device of claim 18, wherein the synchronization signal block measurement period is less than the synchronization signal block transmission period;
the length of the measurement window of the synchronous signal block is equal to the length of the sending time of the synchronous signal block signal.
20. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the synchronization signal block transmission method according to any one of claims 1 to 9.
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