CN117768997A - Time offset estimation method, device, terminal and storage medium - Google Patents
Time offset estimation method, device, terminal and storage medium Download PDFInfo
- Publication number
- CN117768997A CN117768997A CN202311863070.5A CN202311863070A CN117768997A CN 117768997 A CN117768997 A CN 117768997A CN 202311863070 A CN202311863070 A CN 202311863070A CN 117768997 A CN117768997 A CN 117768997A
- Authority
- CN
- China
- Prior art keywords
- time offset
- same
- cell
- frequency adjacent
- timing synchronization
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000001360 synchronised effect Effects 0.000 claims abstract description 25
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 208000019116 sleep disease Diseases 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a time offset estimation method, a device, a terminal and a storage medium in a discontinuous reception mode of an LTE system. The method comprises the following steps: determining a nearest synchronous signal subframe positioned before a subframe where the paging message is positioned according to the subframe where the paging message to be monitored is positioned; starting to receive the synchronous signal data in a preset time, and implementing the timing synchronization of the service cell and the timing synchronization of the same-frequency adjacent cells according to the synchronous signal data; if the timing synchronization of the serving cell fails and the timing synchronization of the same-frequency adjacent cell is successful, the time offset estimation value of the same-frequency adjacent cell is obtained, the difference value between the pre-stored time offset estimation value of the same-frequency adjacent cell and the time offset estimation value of the serving cell is read from a memory, and the time offset estimation value of the serving cell is calculated. The invention can improve the receiving performance of receiving the paging message.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method, an apparatus, a terminal, and a storage medium for estimating a time offset in a discontinuous reception mode of an LTE system.
Background
LTE (Long Term Evolution ) is a high data rate, low latency mobile communication system, which introduces a discontinuous reception power saving mechanism in order to reduce the power consumption of the mobile terminal. When the UE (User Equipment) is standby, the UE is in IDLE DRX (Discontinuous Reception ) mode, so as to save power for the UE, and in this mode, the UE needs to wake up periodically to monitor paging information of the base station.
Because of some physical devices, mainly the reason related to crystal oscillator precision, the UE wakes up after sleeping, and a certain time bias exists for receiving paging information. In the related art, one common time offset estimation method is based on the completion of time offset estimation of the synchronization signal of the serving cell.
In the process of realizing the invention, the inventor finds that at least the following technical problems exist in the prior art:
when a clock or a clock circuit with poor precision is selected, the UE wakes up with a large time bias during sleep, and when the time bias is estimated by using a synchronizing signal, the probability timing synchronization fails due to the interference of adjacent cells, and the situation of a serving cell cannot be found. This scenario may result in a time offset that is not properly adjusted, affecting subsequent reception of the paging message.
Disclosure of Invention
In view of the above, the present invention provides a time offset estimation method, apparatus, terminal and storage medium in a discontinuous reception mode of an LTE system, which can improve the reception performance of receiving paging messages.
In a first aspect, the present invention provides a time offset estimation method in a discontinuous reception mode of an LTE system, including:
determining a nearest synchronous signal subframe positioned before a subframe where a paging message is positioned according to the subframe where the paging message is required to be monitored;
starting to receive synchronous signal data in a preset time, wherein the initial position of the preset time is positioned at the initial position of the synchronous signal subframe or is ahead of the initial position of the synchronous signal subframe;
according to the synchronous signal data, implementing the timing synchronization of the service cell and the timing synchronization of the same-frequency adjacent cells;
if the timing synchronization of the serving cell fails and the timing synchronization of the same-frequency adjacent cell is successful, the time offset estimation value of the same-frequency adjacent cell is obtained, the difference value between the pre-stored time offset estimation value of the same-frequency adjacent cell and the time offset estimation value of the serving cell is read from a memory, and the time offset estimation value of the serving cell is calculated.
Optionally, the method further comprises:
under the condition that the timing synchronization of the service cell and the same-frequency adjacent cell is successful, acquiring a difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell;
and storing the difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell into a memory.
Optionally, obtaining a difference between the time offset estimation value of the co-frequency neighboring cell and the time offset estimation value of the serving cell includes any one of the following modes:
mode 1) obtaining the difference value of the time offset estimated value of the same-frequency adjacent cell and the service cell based on initial network searching;
mode 2) based on the connection state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 3) based on the idle state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 4) acquiring a difference value of time offset estimation values of the same-frequency neighboring cell and the serving cell based on implementing timing synchronization before receiving the paging message.
Optionally, the length of the synchronization signal data is related to a paging cycle;
if the paging cycle is 320ms and the length of the synchronization signal data is N, when the paging cycle is 640ms/1280ms/2560ms, the length of the synchronization signal data is 2N/4N/8N.
In a second aspect, the present invention provides a time offset estimation device in a discontinuous reception mode of an LTE system, including:
the position selection module is used for determining a synchronous signal subframe which is positioned before and closest to a subframe where the paging message is positioned according to the subframe where the paging message to be monitored is positioned;
the data receiving module is used for starting to receive the synchronous signal data in a preset time, and the starting position of the preset time is positioned at the starting position of the synchronous signal subframe or is earlier than the starting position of the synchronous signal subframe;
the timing synchronization module is used for implementing the timing synchronization of the service cell and the timing synchronization of the same-frequency adjacent cells according to the synchronization signal data;
and the calculation module is used for obtaining the time offset estimated value of the same-frequency adjacent cell if the timing synchronization of the service cell fails and the timing synchronization of the same-frequency adjacent cell is successful, reading the difference value between the pre-stored time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell from the memory, and calculating the time offset estimated value of the service cell.
Optionally, the apparatus further comprises:
the time deviation value acquisition module is used for acquiring the difference value between the time deviation estimated value of the same-frequency adjacent cell and the time deviation estimated value of the service cell under the condition that the timing synchronization of the service cell and the same-frequency adjacent cell is successful; and storing the difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell into a memory.
Optionally, the time offset value obtaining module obtains a difference value between a time offset estimated value of the same-frequency neighboring cell and a time offset estimated value of the serving cell, including any one of the following modes:
mode 1) obtaining the difference value of the time offset estimated value of the same-frequency adjacent cell and the service cell based on initial network searching;
mode 2) based on the connection state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 3) based on the idle state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 4) acquiring a difference value of time offset estimation values of the same-frequency neighboring cell and the serving cell based on implementing timing synchronization before receiving the paging message.
Optionally, the length of the synchronization signal data received by the data receiving module is related to a paging cycle;
if the paging cycle is 320ms and the length of the synchronization signal data is N, when the paging cycle is 640ms/1280ms/2560ms, the length of the synchronization signal data is 2N/4N/8N.
In a third aspect, the present invention provides a terminal comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores program instructions executable by the at least one processor to enable the at least one processor to perform the time offset estimation method as provided in the first aspect.
In a fourth aspect, the present invention provides a non-transitory computer readable storage medium having stored thereon program instructions which, when executed, implement the time offset estimation method as provided in the first aspect.
According to the time offset estimation method, the device, the terminal and the storage medium in the discontinuous reception mode of the LTE system, the time offset estimated value of the serving cell is indirectly obtained by utilizing the time offset estimated value of the adjacent cell under the condition that the timing synchronization of the serving cell fails, so that the time offset of the serving cell is adjusted, and the receiving performance of paging messages can be improved.
Drawings
Fig. 1 is a flowchart of a time offset estimation method according to an embodiment of the invention;
fig. 2 is a schematic diagram of a position relationship between a synchronization signal and a paging message in an LTE system in TDD mode according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a position relationship between a synchronization signal and a paging message in an LTE system in FDD mode according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a timing offset estimation device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a timing offset estimation device according to another embodiment of the present invention;
fig. 6 is a schematic diagram of a terminal structure according to an embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.
An embodiment of the present invention provides a time offset estimation method in a discontinuous reception mode of an LTE system, as shown in fig. 1, the method includes the following steps:
s101, determining a synchronous signal subframe which is positioned before and closest to a subframe where the paging message is positioned according to the subframe where the paging message to be monitored is positioned;
s102, starting to receive synchronous signal data in a preset time, wherein the initial position of the preset time is positioned at or in advance of the initial position of a synchronous signal subframe;
s103, implementing timing synchronization of the serving cell and timing synchronization of the same-frequency adjacent cells according to the synchronization signal data;
and S104, if the timing synchronization of the serving cell fails and the timing synchronization of the same-frequency adjacent cell is successful, obtaining a time offset estimated value of the same-frequency adjacent cell, reading a difference value between the pre-stored time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the serving cell from a memory, and calculating the time offset estimated value of the serving cell.
The steps are discussed in detail below.
In step S101, a synchronization signal subframe is determined according to the subframe position of the Paging message (Paging), a subframe containing the synchronization signal is searched for from the subframe where the Paging message is located, and here, the subframe where the Paging message is not located itself, and according to the related protocol, the LTE system adopts that if in TDD mode, the primary synchronization signal (PSS, primary Synchronization Signal) and the secondary synchronization signal (SSS, secondary Synchronization Signal) are distributed in two different subframes. If the LTE system adopts the FDD mode, the main synchronizing signal and the auxiliary synchronizing signal are distributed in the same subframe. The synchronization signal subframe is advanced by at least 4ms relative to the subframe in which the paging message is located.
Fig. 2 shows a possible positional relationship between a synchronization signal and a Paging message in an LTE system in TDD mode, and as shown in fig. 2, if the Paging message (Paging) is in subframe 0 or subframe 1, the synchronization signal is located in subframes 5 and 6 of the previous radio frame. Paging message (Paging) if in subframe 5 or subframe 6, the synchronization signals are located in subframe 0 and subframe 1 of the same radio frame.
Fig. 3 shows a possible positional relationship between the synchronization signal and the Paging message in the LTE system in FDD mode, and as shown in fig. 3, if the Paging message (Paging) is in subframe 0, the synchronization signal is located in subframe 5 of the previous radio frame. Paging message (Paging) if in subframe 4 or subframe 5, the synchronization signal is located in subframe 0 of the same radio frame. Paging message (Paging) if in subframe 9, the synchronization signal is located in subframe 5 of the same radio frame.
In step S102, the length of the synchronization signal data is related to the paging cycle; if the paging cycle is 320ms and the length of the synchronization signal data is N, the length of the synchronization signal data is 2N/4N/8N when the paging cycle is 640ms/1280ms/2560 ms.
In step S103, timing synchronization of the serving cell and timing synchronization of the co-frequency neighboring cells are performed based on the synchronization signal data. The specific method of timing synchronization is not particularly limited, and for example, the synchronization process may be divided into coarse timing synchronization and fine timing synchronization, where the coarse timing synchronization is to quickly find the approximate position of the primary synchronization signal PSS and obtain an intra-cell group Identification (ID) number in order to determine the sliding range of the PSS. The fine timing synchronization is to meet the synchronization precision requirement, further reduce the searching range on the basis of coarse timing synchronization, and can be performed by adopting an algorithm based on correlation of the received PSS and the local PSS.
Further, when performing the correlation calculation of the timing synchronization, if the calculation result satisfies the requirement, the timing synchronization is considered successful, and if the calculation result does not satisfy the set requirement, the timing synchronization is considered failed.
In this embodiment, the following cases are possible:
(1) Only the timing synchronization of the serving cell is successful, i.e. the terminal is synchronized to the serving cell only, then the time offset estimation value of the serving cell is used to perform the time offset adjustment, and then the paging message is demodulated.
(2) And if the timing synchronization of the service cell and the same-frequency adjacent cell is successful, the time offset estimation value of the service cell is used for time offset adjustment, meanwhile, the difference value between the time offset estimation values of the service cell and the same-frequency adjacent cell is saved, and then the paging message is demodulated.
(3) The timing synchronization of the service cell fails, and only the timing synchronization of the same-frequency adjacent cell is successful, namely, the terminal only synchronizes to the same-frequency adjacent cell, so that the time offset estimated value of the same-frequency adjacent cell is utilized to obtain the time offset estimated value of the service cell, the time offset is adjusted, and then the paging message is demodulated.
Step S104 is the operation executed by the terminal corresponding to the condition (3), after obtaining the time offset estimated value of the same-frequency adjacent cell, the difference between the pre-stored time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell is read from the memory, and the time offset estimated value of the service cell is calculated.
Assuming that the time offset estimated value of the serving cell is ase:Sub>A, the time offset estimated value of the same-frequency adjacent cell is B, and the difference value of the two is C, wherein c=b-ase:Sub>A. Then, the time offset estimation value B of the adjacent cell subtracts the difference value C of the time offset estimation value stored before, and the time offset estimation value A of the service cell can be obtained.
Further, in one embodiment, the time offset adjustment method further includes:
under the condition that the timing synchronization of the service cell and the same-frequency adjacent cell is successful, acquiring a difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell;
and storing the difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the serving cell into a memory.
Further, obtaining a difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the serving cell, wherein the difference value comprises any one of the following modes:
mode 1) obtaining the difference value of the time offset estimated value of the same-frequency adjacent cell and the service cell based on initial network searching;
mode 2) based on the connection state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 3) based on the idle state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 4) acquiring a difference value of time offset estimation values of the same-frequency neighboring cell and the serving cell based on implementing timing synchronization before receiving the paging message in the discontinuous reception mode.
According to the time offset estimation method in the discontinuous reception mode of the LTE system, provided by the embodiment of the invention, the time offset estimation value of the serving cell is indirectly obtained by utilizing the time offset estimation value of the adjacent cell under the condition that the timing synchronization of the serving cell fails, so that the time offset of the serving cell is adjusted, and the receiving performance of paging messages can be improved.
On the other hand, the embodiment of the present invention further provides a time offset estimation device in a discontinuous reception mode of an LTE system, as shown in fig. 4, where the device includes:
the location selection module 401 is configured to determine, according to a subframe in which the paging message to be monitored is located, a synchronization signal subframe that is located before and closest to the subframe in which the paging message is located;
a data receiving module 402, configured to start receiving synchronization signal data within a predetermined time, where a start position of the predetermined time is located at or ahead of a start position of a synchronization signal subframe;
a timing synchronization module 403, configured to implement timing synchronization of the serving cell and timing synchronization of the co-frequency neighboring cell according to the synchronization signal data;
and a calculating module 404, configured to obtain a time offset estimation value of the co-frequency neighboring cell if the timing synchronization of the serving cell fails and the timing synchronization of the co-frequency neighboring cell succeeds, read a difference value between the pre-stored time offset estimation value of the co-frequency neighboring cell and the time offset estimation value of the serving cell from the memory, and calculate the time offset estimation value of the serving cell.
Further, as shown in fig. 5, the time offset estimation device further includes:
a time offset value obtaining module 405, configured to obtain a difference value between a time offset estimated value of the same-frequency neighboring cell and a time offset estimated value of the serving cell when timing synchronization of the serving cell and the same-frequency neighboring cell is successful; and storing the difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the serving cell into a memory.
Further, the time offset value obtaining module 405 obtains a difference between the time offset estimated value of the co-frequency neighboring cell and the time offset estimated value of the serving cell, which includes any one of the following manners:
mode 1) obtaining the difference value of the time offset estimated value of the same-frequency adjacent cell and the service cell based on initial network searching;
mode 2) based on the connection state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 3) based on the idle state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 4) acquiring a difference value of time offset estimation values of the same-frequency neighboring cell and the serving cell based on implementing timing synchronization before receiving the paging message.
Further, the length of the synchronization signal data received by the data receiving module 402 is related to the paging cycle; if the paging cycle is 320ms and the length of the synchronization signal data is N, when the paging cycle is 640ms/1280ms/2560ms, the length of the synchronization signal data is 2N/4N/8N.
The time offset estimation device provided in the embodiment of the present invention is used for executing the above method embodiment, and the specific flow and details thereof refer to the above embodiment, and are not repeated herein.
Fig. 6 is a schematic diagram of a terminal structure according to an embodiment of the present invention. As shown in fig. 6, the terminal may include: at least one processor (processor) 601, a memory (memory) 602 communicatively coupled to the processor 601, wherein the processor 601 and the memory 602 are in communication with each other via a communication bus 603. The memory 602 stores program instructions executable by the processor 601, which are executed by the processor 601 to enable the processor 601 to perform the time offset estimation method provided in the above embodiments.
In another aspect, an embodiment of the present invention further provides a non-transitory computer readable storage medium, where program instructions are stored, where the program instructions, when executed by a processor, implement the time offset estimation method provided in the foregoing embodiments.
The apparatus embodiments described above are merely illustrative, wherein the elements illustrated as separate elements may or may not be physically separate, and the elements shown as elements may or may not be physical elements, may be located in one place, or may be distributed over a plurality of network elements. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. Those of ordinary skill in the art will understand and implement the present invention without undue burden.
From the above description of the embodiments, it will be apparent to those skilled in the art that the embodiments may be implemented by means of software plus necessary general hardware platforms, or of course may be implemented by means of hardware. Based on this understanding, the foregoing technical solution may be embodied essentially or in a part contributing to the prior art in the form of a software product, which may be stored in a computer readable storage medium, such as ROM/RAM, a magnetic disk, an optical disk, etc., including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method described in the respective embodiments or some parts of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A time offset estimation method in a discontinuous reception mode of an LTE system, the method comprising:
determining a nearest synchronous signal subframe positioned before a subframe where a paging message is positioned according to the subframe where the paging message is required to be monitored;
starting to receive synchronous signal data in a preset time, wherein the initial position of the preset time is positioned at the initial position of the synchronous signal subframe or is ahead of the initial position of the synchronous signal subframe;
according to the synchronous signal data, implementing the timing synchronization of the service cell and the timing synchronization of the same-frequency adjacent cells;
if the timing synchronization of the serving cell fails and the timing synchronization of the same-frequency adjacent cell is successful, the time offset estimation value of the same-frequency adjacent cell is obtained, the difference value between the pre-stored time offset estimation value of the same-frequency adjacent cell and the time offset estimation value of the serving cell is read from a memory, and the time offset estimation value of the serving cell is calculated.
2. The method according to claim 1, wherein the method further comprises:
under the condition that the timing synchronization of the service cell and the same-frequency adjacent cell is successful, acquiring a difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell;
and storing the difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell into a memory.
3. The method of claim 2, wherein obtaining the difference between the time offset estimate of the co-frequency neighbor cell and the time offset estimate of the serving cell comprises any one of:
mode 1) obtaining the difference value of the time offset estimated value of the same-frequency adjacent cell and the service cell based on initial network searching;
mode 2) based on the connection state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 3) based on the idle state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 4) acquiring a difference value of time offset estimation values of the same-frequency neighboring cell and the serving cell based on implementing timing synchronization before receiving the paging message.
4. The method of claim 1, wherein the length of the synchronization signal data is related to a paging cycle;
if the paging cycle is 320ms and the length of the synchronization signal data is N, when the paging cycle is 640ms/1280ms/2560ms, the length of the synchronization signal data is 2N/4N/8N.
5. A time offset estimation device in a discontinuous reception mode of an LTE system, the device comprising:
the position selection module is used for determining a synchronous signal subframe which is positioned before and closest to a subframe where the paging message is positioned according to the subframe where the paging message to be monitored is positioned;
the data receiving module is used for starting to receive the synchronous signal data in a preset time, and the starting position of the preset time is positioned at the starting position of the synchronous signal subframe or is earlier than the starting position of the synchronous signal subframe;
the timing synchronization module is used for implementing the timing synchronization of the service cell and the timing synchronization of the same-frequency adjacent cells according to the synchronization signal data;
and the calculation module is used for obtaining the time offset estimated value of the same-frequency adjacent cell if the timing synchronization of the service cell fails and the timing synchronization of the same-frequency adjacent cell is successful, reading the difference value between the pre-stored time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell from the memory, and calculating the time offset estimated value of the service cell.
6. The apparatus of claim 5, wherein the apparatus further comprises:
the time deviation value acquisition module is used for acquiring the difference value between the time deviation estimated value of the same-frequency adjacent cell and the time deviation estimated value of the service cell under the condition that the timing synchronization of the service cell and the same-frequency adjacent cell is successful; and storing the difference value between the time offset estimated value of the same-frequency adjacent cell and the time offset estimated value of the service cell into a memory.
7. The apparatus of claim 6, wherein the time offset value acquisition module acquires a difference between a time offset estimate value of a co-frequency neighboring cell and a time offset estimate value of a serving cell, comprising any one of the following means:
mode 1) obtaining the difference value of the time offset estimated value of the same-frequency adjacent cell and the service cell based on initial network searching;
mode 2) based on the connection state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 3) based on the idle state, implementing timing synchronization to the same-frequency adjacent cells to obtain the difference value of the time offset estimated values of the same-frequency adjacent cells and the service cell;
mode 4) acquiring a difference value of time offset estimation values of the same-frequency neighboring cell and the serving cell based on implementing timing synchronization before receiving the paging message.
8. The apparatus of claim 5, wherein the length of the synchronization signal data received by the data receiving module is related to a paging cycle;
if the paging cycle is 320ms and the length of the synchronization signal data is N, when the paging cycle is 640ms/1280ms/2560ms, the length of the synchronization signal data is 2N/4N/8N.
9. A terminal, the terminal comprising:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein,
the memory stores program instructions executable by the at least one processor to enable the at least one processor to perform the method of estimating time offset in the discontinuous reception mode of the LTE system according to any one of claims 1 to 4.
10. A non-transitory computer readable storage medium having stored thereon program instructions that, when executed, implement the method of time offset estimation in LTE system discontinuous reception mode according to any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311863070.5A CN117768997A (en) | 2023-12-29 | 2023-12-29 | Time offset estimation method, device, terminal and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311863070.5A CN117768997A (en) | 2023-12-29 | 2023-12-29 | Time offset estimation method, device, terminal and storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117768997A true CN117768997A (en) | 2024-03-26 |
Family
ID=90312580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311863070.5A Pending CN117768997A (en) | 2023-12-29 | 2023-12-29 | Time offset estimation method, device, terminal and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117768997A (en) |
-
2023
- 2023-12-29 CN CN202311863070.5A patent/CN117768997A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10834691B2 (en) | Direct control signaling in a wireless communication system | |
| CN111385826B (en) | Reference signal determining method, device, electronic equipment and storage medium | |
| US10004099B2 (en) | Efficient discontinuous reception in a mobile network | |
| US9398634B2 (en) | Mobile station, core network node, base station subsystem, and methods for implementing longer paging cycles in a cellular network | |
| EP3146767B1 (en) | Optimized synchronization procedure for prolonged periods of sleep | |
| TWI504211B (en) | Enhanced multiple sim time tracking | |
| US20150103817A1 (en) | Global time synchronization server for wireless devices | |
| US8787945B1 (en) | Correction of timing errors to enable long sleep times | |
| US11089548B2 (en) | Method and device for low power synchronization in wireless communication | |
| EP3245818B1 (en) | A core network node and a method therein for an extended drx paging cycle | |
| CN104717725B (en) | A kind of synchronous method under LTE system discontinuous reception modes | |
| CN110557807B (en) | Method for carrying out communication in sleep state of terminal and terminal | |
| JP3795496B2 (en) | Dual wireless terminal device and dual wireless system | |
| CN117768997A (en) | Time offset estimation method, device, terminal and storage medium | |
| CN113395753A (en) | Method and system for synchronizing wireless terminal and base station and wireless terminal | |
| EP2739084B1 (en) | Neighbour cell measurements | |
| CN107872841B (en) | GSM cell synchronization method and device under LTE + WCDMA dual-card LTE packet switching and mobile terminal | |
| JP2005039367A (en) | Cell search control method of mobile communications terminal and mobile communications terminal | |
| JP2007082057A (en) | Mobile communication terminal device | |
| EP3580968B1 (en) | Synchronization for extended drx | |
| CN110381570A (en) | Speculate beacon signal reception time method and device | |
| CN115696548A (en) | Information processing method, device, equipment and storage medium | |
| CN117377036A (en) | Communication method and device for discontinuous coverage and computer readable storage medium | |
| CN118102432A (en) | Time synchronization method, apparatus, device, storage medium, and program product | |
| JP2010087789A (en) | Beacon synchronizing method in wireless lan system, wireless lan terminal, and beacon synchronizing program |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |