CN111294900B

CN111294900B - Paging receiving method and device, storage medium and terminal

Info

Publication number: CN111294900B
Application number: CN201910599939.7A
Authority: CN
Inventors: 李温温
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2023-01-10
Anticipated expiration: 2039-07-04
Also published as: CN111294900A

Abstract

A paging receiving method and device, storage medium and terminal, the paging receiving method includes: measuring a plurality of SSBs of a serving cell to determine a strongest SSB of the plurality of SSBs with a best signal quality; calculating the paging time-frequency position associated with the strongest SSB; and receiving paging at the paging time-frequency position. The invention can receive paging at the time-frequency position with higher accuracy, is favorable for ensuring the decoding performance of paging and saves power consumption.

Description

Paging receiving method and device, storage medium and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a paging receiving method and apparatus, a storage medium, and a terminal.

Background

In a New Radio (NR, also called New air interface) system of The Fifth-Generation mobile communication (5G), a time position of Paging (Paging) is different from that of a conventional communication system in that, in addition to a difference in basic configuration, the time position of Paging is associated with an SSB (Synchronization Signal and physical broadcast channel Block) index (index) position therein. As the location changes, the strength of each beam (beam) of a User Equipment (UE) may also change, and therefore, it is also necessary for the UE to measure each beam of a serving cell.

In an IDLE (IDLE) state, for the purpose of saving the power consumption of the UE, the sleeping UE closes the high-precision clock and only uses the low-precision clock for timing processing, so that when the sleeping UE wakes up to receive a page, a certain time offset and frequency offset exist, and if the time offset/frequency offset is not corrected in advance, the UE may not receive the page in an extreme case, and a paging missing phenomenon may occur.

Therefore, there is a need to solve the missed paging problem and avoid missed paging.

Disclosure of Invention

The technical problem solved by the invention is how to improve the paging receiving performance so as to avoid missing paging as much as possible.

In order to solve the above technical problem, an embodiment of the present invention provides a paging receiving method, including: measuring a plurality of SSBs of a serving cell to determine a strongest SSB of the plurality of SSBs having a best signal quality; calculating the paging time-frequency position associated with the strongest SSB; and receiving paging at the paging time-frequency position.

Optionally, before measuring the multiple SSBs of the serving cell, the receiving method further includes: a plurality of SSBs of a serving cell are received.

Optionally, the calculating the paging time-frequency position associated with the strongest SSB includes: and adjusting time offset and frequency offset according to the strongest SSB to obtain the paging time-frequency position associated with the strongest SSB.

Optionally, the signal quality preferably refers to a maximum value of RSRP or RSRQ.

In order to solve the above technical problem, an embodiment of the present invention further provides a paging receiving apparatus, including: the measurement module is used for measuring the plurality of SSBs to determine the strongest SSB with the best signal quality in the plurality of SSBs; a calculating module, configured to calculate a paging time-frequency position associated with the strongest SSB; and the first receiving module is used for receiving paging at the paging time frequency position.

Optionally, the receiving apparatus further includes: a second receiving module, configured to receive the plurality of SSBs of the serving cell before performing measurement on the plurality of SSBs of the serving cell.

Optionally, the calculation module includes: and the adjusting submodule is used for adjusting the time offset and the frequency offset according to the strongest SSB so as to obtain the paging time-frequency position associated with the strongest SSB.

Optionally, the signal quality preferably refers to a maximum value of RSRP and RSRQ.

To solve the above technical problem, an embodiment of the present invention further provides a storage medium having stored thereon computer instructions, where the computer instructions execute the steps of the above method when executed.

In order to solve the foregoing technical problem, an embodiment of the present invention further provides a terminal, including a memory and a processor, where the memory stores computer instructions executable on the processor, and the processor executes the computer instructions to perform the steps of the foregoing method.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

the embodiment of the invention provides a paging receiving method, which comprises the following steps: measuring a plurality of SSBs of a serving cell to determine a strongest SSB of the plurality of SSBs with a best signal quality; calculating the paging time-frequency position associated with the strongest SSB; and receiving paging at the paging time frequency position. Compared with the prior art, the embodiment of the invention can complete the pre-synchronization of the measurement and the time frequency deviation correction of the service cell by receiving all SSBs of the service cell firstly, thereby receiving the paging at the time frequency position with higher accuracy, being beneficial to ensuring the decoding performance of the paging, being beneficial to reducing the receiving and processing of data and saving power consumption because the pre-synchronization processing is not needed.

Further, the calculating the paging time-frequency location of the strongest SSB association includes: and adjusting time offset and frequency offset according to the strongest SSB to obtain the paging time-frequency position associated with the strongest SSB. After the strongest SSB is determined, the time offset and the frequency offset are adjusted according to the strongest SSB, so that the time-frequency position with higher accuracy can be obtained, and the paging receiving performance can be further improved by the received paging.

Drawings

Fig. 1 is a flow chart illustrating a paging receiving method in the prior art;

fig. 2 is a flowchart illustrating a paging receiving method according to an embodiment of the present invention;

fig. 3 is a flowchart illustrating a paging receiving method according to another embodiment of the present invention;

fig. 4 is a schematic flowchart of signaling interaction in a typical scenario according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a paging receiving apparatus according to an embodiment of the present invention.

Detailed Description

As mentioned in the background, in the prior art, paging may not be received due to time frequency and frequency offset, and a paging missing phenomenon may occur.

In the NR technique, in general, SSB can be used for presynchronization to remove time and/or frequency offsets. Specifically, in the prior art, the strongest SSB measured by the previous serving cell may be used as the SSB for the next sleep wake-up to perform pre-synchronization, and the time offset and/or frequency offset adjustment is performed according to the measurement result of the SSB, and then the paging is received, and then other SSBs configured by the serving cell are received and measured.

Fig. 1 is a flowchart illustrating a paging receiving method in the prior art. Referring to fig. 1, before receiving paging, a ue first receives the strongest SSB of the last serving cell for pre-synchronization, and completes time offset and frequency offset correction; thereafter, receiving a page at a paging cycle; further, other multiple SSBs of the receiving serving cell perform serving cell measurements. In FIG. 1, there are 4 SSBs, namely SSB0, SSB1, SSB2 and SSB3. Those skilled in the art will appreciate that the number of SSBs in different frequency bands may be different, such as 8, 64, etc.

The inventor of the present application finds that when the UE moves, the strongest beam may change, so that the paging location received next time is not necessarily the paging location corresponding to the strongest SSB in the period of time. In the prior art, the strongest SSB in the period of time is used as the basis of the next paging, which may cause that the time offset and/or the frequency offset cannot be corrected, and the paging decoding performance is reduced.

The embodiment of the invention provides a paging receiving method, which comprises the following steps: measuring a plurality of SSBs of a serving cell to determine a strongest SSB of the plurality of SSBs with a best signal quality; calculating the paging time-frequency position associated with the strongest SSB; and receiving paging at the paging time-frequency position.

Compared with the prior art, the embodiment of the invention can complete the pre-synchronization of the measurement and the time frequency deviation correction of the service cell by receiving all SSBs of the service cell firstly, thereby receiving the paging at the time frequency position with higher accuracy, being beneficial to ensuring the decoding performance of the paging, being beneficial to reducing the receiving and processing of data and saving power consumption because the pre-synchronization processing is not needed.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 2 is a flowchart illustrating a paging receiving method according to an embodiment of the present invention. The paging reception method may be applied to a terminal side, for example, performed by a 5G UE.

Specifically, the paging receiving method may include the steps of:

step S201, a plurality of SSBs of a serving cell are measured to determine the strongest SSB with the best signal quality in the plurality of SSBs;

step S202, calculating the paging time-frequency position associated with the strongest SSB;

step S203, receiving paging at the paging time frequency position.

More specifically, in the NR Release 15 (Release 15) system, a synchronization signal and a broadcast channel signal are transmitted in a synchronization signal block. Moreover, the 5G system also introduces beam scanning (also called beam sweeping) and other functions. Each synchronization signal block can be regarded as a resource corresponding to one beam in the beam scanning process.

The Synchronization Signal block includes a Primary Synchronization Signal (PSS), a Secondary Synchronization Signal (SSS), and a Physical Broadcast Channel (PBCH).

A plurality of synchronization signal blocks may constitute a synchronization signal burst. The synchronization signal burst can be viewed as a relatively centralized resource of a block containing multiple beams.

The plurality of synchronization signal bursts form a set of synchronization signal bursts (sync signal burst set). The synchronization signal block is repeatedly transmitted on different beams to complete the beam scanning process. Through the training of the beam scanning, the user equipment can determine on which beam the signal received is strongest.

For example, it can be assumed that the time domain positions of the L synchronization signal blocks within a 5 millisecond (ms) window are fixed. That is, the transmission time instant of the synchronization signal block within the 5ms window is fixed, as is the index. Wherein the indexes of the L synchronous signal blocks are arranged consecutively in time domain positions from 0 to (L-1), L being a positive integer.

In step S201, the base station may transmit an SSB. The UE may receive a plurality of SSBs for a serving cell from the base station. For the serving cell where the UE resides, the SSBs are transmitted periodically, and each period may be used by the base station to transmit a plurality of SSBs. The UE may receive the plurality of SSBs, e.g., receive all SSBs within the period.

In one embodiment, first, the UE may calculate a paging location of a synchronization signal block SSB0 with an index of 0; secondly, the UE may receive data including all SSBs according to the SSB location and the SSB configuration information of the serving cell. In a particular implementation, the received data may be longer than the actual SSB duration. The UE can calculate the time with the maximum deviation according to the sleep time and the precision deviation of the adopted clock crystal oscillator, and then detects the PSS/SS signal therein to obtain the actual synchronous position, thereby obtaining the timing deviation/frequency deviation.

In one embodiment, the UE may receive all SSBs within a single paging cycle as the plurality of SSBs of the serving cell.

Thereafter, the UE may determine an index of a strongest SSB of the plurality of SSBs. The number of SSBs in a single period depends on the frequency band, and the number of SSBs in different frequency bands may be different, for example, 4, 8, and so on. Different SSBs map pages at different time-frequency locations.

In particular implementations, the UE may perform measurements on the plurality of SSBs to obtain measurement results. And obtaining the SSB with the best signal quality according to the measurement result, and taking the SSB with the best signal quality as the strongest SSB. The measurement results include time/frequency offset information, i.e., information obtained by pre-synchronization in the prior art.

In one embodiment, the Signal quality may preferably refer to a maximum value of Reference Signal Received Power (RSRP).

In another embodiment, the Signal Quality may preferably refer to a maximum Reference Signal Received Quality (RSRQ).

In step S202, the UE may calculate a paging time-frequency location of the strongest SSB association. Specifically, the time offset and the frequency offset may be adjusted according to the strongest SSB to obtain the paging time-frequency position associated with the strongest SSB.

In step S203, a page may be received at the paging time-frequency location. In a specific implementation, a paging index corresponding to the strongest SSB may be calculated according to the strongest SSB, and a page may be received.

Fig. 3 is a flowchart illustrating a paging receiving method according to another embodiment of the present invention. Fig. 3 assumes that the serving cell contains 4 SSBs per paging cycle.

Referring to fig. 3, the ue may receive all SSBs (including SSB0, SSB1, SSB2, and SSB 3) of the serving cell before receiving a page (indicated by a cross-hatching in the figure) to complete the serving cell measurements. It should be noted that the length of data received by the UE including all SSBs may exceed the length of all SSBs, and the length of the excess depends on the accuracy of the clock oscillator used when the UE sleeps and the length of time for sleeping.

After the UE receives all SSBs of the serving cell, the strongest SSB in the current time period is calculated. Further, a time offset and a frequency offset may be determined based on the strongest SSB.

After adjusting the time and frequency offsets, the UE may receive a page at a paging time-frequency location. The decoding performance of the received paging is better.

Fig. 4 is a schematic flowchart of signaling interaction in a typical scenario according to an embodiment of the present invention.

In a typical application scenario, as shown in fig. 4, the base station 2 may perform operation s1, that is, the base station 2 sends an SSB to a serving cell where the user equipment 1 resides.

Next, the user equipment 1 executes operation s2, that is, the user equipment 1 receives all SSBs issued by the base station 2. In a specific implementation, when the ue 1 is in an idle state, the ue 1 may obtain a measurement result by measuring all SSBs.

Thirdly, the SSB with the best signal quality is determined according to the measurement result, namely the strongest SSB is determined. It should be noted that the measurement result may include a time offset/frequency offset. The user equipment 1 may correct the time/frequency offset. Further, the user equipment 1 may calculate the paging time-frequency location associated with the strongest SSB.

Thereafter, the base station performs operation s3, i.e. sending a page to the user equipment 1. The user equipment 1 may receive a page at said paging time-frequency location.

For more contents of the working principles and working modes of the user equipment 1 and the base station 2 in the application scenario shown in fig. 4, reference may be made to the related descriptions in fig. 2 and fig. 3, which are not repeated herein.

Therefore, the embodiment of the present invention may first perform measurement on the serving cell, obtain the strongest SSB in the time interval, then calculate the corresponding paging receiving location according to the SSB, and receive paging. By adjusting the SSB and the receiving processing sequence of the paging, the decoding performance of the paging is improved, and the data receiving is reduced to save the power consumption.

Fig. 5 is a schematic structural diagram of a paging receiving apparatus according to an embodiment of the present invention. The paging receiving device 5 may implement the method solutions shown in fig. 2 and fig. 3.

Specifically, the paging reception device 5 may include: a measurement module 51, a calculation module 52 and a first receiving module 53.

More specifically, the measurement module 51 may be configured to measure a plurality of SSBs to determine a strongest SSB with the best signal quality among the plurality of SSBs; the calculating module 52 may be configured to calculate a paging time-frequency location associated with the strongest SSB; the first receiving module 53 may be configured to receive a page at the paging time-frequency location.

In a specific implementation, the paging receiving apparatus 5 may further include: a second receiving module 54. The second receiving module 54 may be configured to receive the SSBs of the serving cell before performing the measurement on the SSBs of the serving cell.

In a specific implementation, the calculation module 52 may include: the submodule 521 is adjusted.

In an embodiment, the adjusting sub-module 521 may be configured to adjust a time offset and a frequency offset according to the strongest SSB, so as to obtain a paging time-frequency location associated with the strongest SSB.

In a specific implementation, the signal quality may preferably refer to that RSRP and RSRQ have the largest values.

For more contents of the operation principle and the operation mode of the paging receiver 5, reference may be made to the related description of the technical solutions in fig. 2 and fig. 3, which is not described herein again.

Further, the embodiment of the present invention also discloses a storage medium, on which computer instructions are stored, and when the computer instructions are executed, the technical solutions of the methods described in the embodiments shown in fig. 2 and fig. 3 are executed. Preferably, the storage medium may include a computer-readable storage medium such as a non-volatile (non-volatile) memory or a non-transitory (non-transient) memory. The computer readable storage medium may include ROM, RAM, magnetic or optical disks, and the like.

Further, an embodiment of the present invention further discloses a 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 technical solutions of the methods in the embodiments shown in fig. 2 and fig. 3 when executing the computer instructions. Preferably, the terminal may be an NR UE.

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

1. A paging receiving method, comprising:

measuring a plurality of SSBs of a serving cell to determine a strongest SSB of the plurality of SSBs with a best signal quality;

calculating the paging time-frequency position associated with the strongest SSB;

receiving a page at the paging time-frequency location;

wherein the calculating the paging time-frequency position associated with the strongest SSB comprises: adjusting time offset and frequency offset according to the strongest SSB to obtain a paging time-frequency position associated with the strongest SSB;

and the time offset and the frequency offset are obtained by detecting a PSS/SS signal in the time with the most deviation after calculating the time with the most deviation according to the sleep time and the precision deviation of the adopted clock crystal oscillator to obtain the actual synchronous position.

2. The page receiving method according to claim 1, wherein before performing measurements on a plurality of SSBs of a serving cell, the receiving method further comprises:

a plurality of SSBs of a serving cell are received.

3. A page receiving method according to claim 1 or 2, characterised in that said signal quality preferably means that the RSRP, RSRQ value is maximum.

4. A paging receiving apparatus, comprising:

the measurement module is used for measuring the plurality of SSBs to determine the strongest SSB with the best signal quality in the plurality of SSBs;

a calculating module, configured to calculate a paging time-frequency location associated with the strongest SSB;

a first receiving module, configured to receive a page at the paging time-frequency location;

wherein the calculation module comprises: the adjusting submodule is used for adjusting time offset and frequency offset according to the strongest SSB so as to obtain a paging time-frequency position associated with the strongest SSB;

and the time offset and the frequency offset are obtained by detecting a PSS/SS signal in the time with the maximum deviation after calculating the time with the maximum deviation according to the sleep time and the precision deviation of the adopted clock crystal oscillator to obtain an actual synchronous position.

5. The page receiving apparatus according to claim 4, further comprising:

a second receiving module, configured to receive the plurality of SSBs of the serving cell before performing measurement on the plurality of SSBs of the serving cell.

6. A paging receiving device according to claim 4 or 5, characterized in that said signal quality preferably means that the value of RSRP, RSRQ is maximal.

7. A storage medium having stored thereon computer instructions, which when executed by a processor, perform the steps of the method of any one of claims 1 to 3.

8. A terminal 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 any one of claims 1 to 3.