CN109561475B - Method, device, base station and user equipment for indicating and acquiring adjacent region time sequence information - Google Patents
Method, device, base station and user equipment for indicating and acquiring adjacent region time sequence information Download PDFInfo
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- CN109561475B CN109561475B CN201710889124.3A CN201710889124A CN109561475B CN 109561475 B CN109561475 B CN 109561475B CN 201710889124 A CN201710889124 A CN 201710889124A CN 109561475 B CN109561475 B CN 109561475B
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- H04W36/0005—Control or signalling for completing the hand-off
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- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention provides a method, a device, a base station and user equipment for indicating and acquiring adjacent region time sequence information. On the base station side, the method comprises: when the UE has a plurality of service cells and at least two sets of time sequence information corresponding to the service cells are obtained, before the UE finds and measures the cells of the adjacent cells, a first indication that the time sequence information of the adjacent cells and the time sequence information of the service cells of the UE are synchronous and a second indication that the time sequence of the adjacent cells and the time sequence information of the service cells corresponding to the service cells obtained by the UE are synchronous are sent to the UE, or the first indication that the time sequence information of the service cells of the adjacent cells and the time sequence information of the service cells of the UE are synchronous is only sent to the UE. The invention can indicate the synchronous relation between the adjacent cell and a plurality of asynchronous service cells of the UE when the UE has a plurality of asynchronous service cells.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method, an apparatus, a base station, and a user equipment for indicating and acquiring timing information of a neighboring cell.
Background
In an NR (New Radio, New air interface) system, if a UE (User Equipment) can obtain timing Information of a neighboring cell before cell discovery and measurement are performed on the neighboring cell, it is helpful for the UE to estimate a position where a SS (Synchronization Signal Block) of the neighboring cell may appear, and estimate identification Information of a Synchronization Signal Block after the Synchronization Signal Block is found, so as to avoid that the UE needs to obtain the identification Information of the Synchronization Signal Block in a manner of analyzing PBCH (Physical Broadcast Channel) and reading MIB (Master Information Block) Information in measurement and switching processes. The auxiliary indication mode of the adjacent region time sequence is beneficial to shortening corresponding measurement, switching time delay and complexity.
In the discussion of 3GPP (3rd Generation Partnership Project) regarding inter-cell synchronization indication, it has been agreed to introduce 1-bit information to indicate the synchronization relationship between the neighboring cell and the serving cell of the UE, and when the neighboring cell is synchronized with the serving cell of the UE, the UE can obtain the identification information of the synchronization signal block without analyzing the PBCH. However, this method is not sufficient in indicating capability when a UE has multiple unsynchronized serving cells, for example, in a dual connectivity scenario, if cells of an MSG (Master Cell Group) and an SCG (Secondary Cell Group) where the UE is located are not synchronized, it is difficult to indicate which serving Cell or serving cells of which type of UE the neighboring Cell is or are not timing synchronized by using 1-bit information.
Disclosure of Invention
The method, the device, the base station and the user equipment for indicating and acquiring the time sequence information of the adjacent cell can indicate the synchronous relation between the adjacent cell and a plurality of asynchronous service cells of the UE when the UE has a plurality of asynchronous service cells.
In a first aspect, the present invention provides a method for indicating timing information of a neighboring cell, where the method is applied to a base station, and the method includes:
when the UE has a plurality of service cells and at least two sets of time sequence information corresponding to the service cells are obtained, before the UE finds and measures the cells of the adjacent cells, a first indication that the time sequence information of the adjacent cells and the time sequence information of the service cells of the UE are synchronous and a second indication that the time sequence of the adjacent cells and the time sequence information of the service cells corresponding to the service cells obtained by the UE are synchronous are sent to the UE, or the first indication that the time sequence information of the service cells of the adjacent cells and the time sequence information of the service cells of the UE are synchronous is only sent to the UE.
Optionally, when the number of serving cells is greater than or equal to the number of sets of timing information, the second indication is at least one bit identifying a set of timing information synchronized with the neighboring cell timing information.
Optionally, when the number of serving cells is greater than or equal to the number of sets of timing information, the second indication is a plurality of bits identifying ID information of one serving cell synchronized with the timing of the neighboring cell or a plurality of bits identifying ID information of one serving cell among the plurality of serving cells synchronized with the timing of the neighboring cell.
Optionally, the sending, to the UE, a second indication of a synchronization relationship between the neighboring cell time sequence and at least two sets of time sequences corresponding to multiple serving cells that the UE has obtained includes: and sending a second indication of the synchronization relationship between the adjacent cell time sequence and at least two sets of time sequences corresponding to a plurality of service cells acquired by the UE to the UE through RRC signaling.
In a second aspect, the present invention provides a method for acquiring timing information of a neighboring cell, where the method is applied to a user equipment, and the method includes:
when a plurality of service cells exist in UE and at least two sets of time sequence information corresponding to the service cells are obtained, before cell discovery and measurement are carried out on the adjacent cells, a first indication that the time sequence information of the adjacent cells and the service cells of the UE are synchronous and a second indication that the time sequence of the adjacent cells and the at least two sets of time sequences corresponding to the service cells obtained by the UE are synchronous and sent by a base station are received, or only the first indication that the time sequence information of the adjacent cells and the service cells of the UE are synchronous and sent by the base station is received;
and determining the time sequence of the adjacent cell to be synchronous with which set of time sequence information in the at least two sets of time sequence information according to the first indication and the second indication, or determining the time sequence of the adjacent cell to be synchronous with which set of time sequence information in the at least two sets of time sequence information according to the first indication.
Optionally, the determining, according to the first indication and the second indication, which set of timing information of the at least two sets of timing information is synchronized with the timing information of the neighboring cell includes: and determining the time sequence of the adjacent region to be synchronous with which set of time sequence information in the at least two sets of time sequence information according to the bit information of the at least one bit.
Optionally, the determining, according to the first indication and the second indication, which set of timing information of the at least two sets of timing information the timing of the neighboring cell is synchronized with includes: and determining corresponding ID information according to the bit information of the plurality of bits, and determining that the time sequence of the adjacent cell is synchronous with the time sequence information of the service cell with the ID information.
Optionally, the determining, according to the first indication, which of the at least two sets of timing information the timing of the neighboring cell is synchronized includes: and determining that the time sequence of the adjacent cell is synchronous with the time sequence information of the current main service cell.
Optionally, the receiving a second indication of a synchronization relationship between the neighboring cell time sequence sent by the base station and at least two sets of time sequences corresponding to multiple serving cells that have been obtained by the UE includes: and receiving a second indication of the synchronization relationship between the adjacent cell time sequence sent by the base station and at least two sets of time sequences corresponding to a plurality of service cells acquired by the UE through RRC signaling.
In a third aspect, the present invention provides an apparatus for indicating timing information of a neighboring cell, where the apparatus is located at a base station, and the apparatus includes:
the first sending unit is used for sending a first indication that the time sequence information of the adjacent cell and the plurality of service cells of the UE are synchronous to each other to the UE before the UE conducts cell discovery and measurement on the adjacent cell when the UE has the plurality of service cells and at least two sets of time sequence information corresponding to the plurality of service cells are obtained;
and a second sending unit, configured to send, to the UE, a second indication of a synchronization relationship between the time sequence of the neighboring cell and at least two sets of time sequences corresponding to the multiple serving cells that the UE has obtained, while or after the first sending unit sends, to the UE, a first indication that there is time sequence information synchronization between the neighboring cell and the multiple serving cells of the UE.
Optionally, when the number of serving cells is greater than or equal to the number of sets of timing information, the second indication is at least one bit identifying a set of timing information synchronized with the neighboring cell timing information.
Optionally, when the number of serving cells is greater than or equal to the number of sets of timing information, the second indication is a plurality of bits identifying ID information of one serving cell synchronized with the timing of the neighboring cell or a plurality of bits identifying ID information of one serving cell among the plurality of serving cells synchronized with the timing of the neighboring cell.
Optionally, the second sending unit is configured to send, to the UE through an RRC signaling, a second indication of a synchronization relationship between the neighboring cell time sequence and at least two sets of time sequences corresponding to multiple serving cells that the UE has obtained.
In a fourth aspect, the present invention provides an apparatus for acquiring timing information of a neighboring cell, where the apparatus is located in a user equipment, and the apparatus includes:
the base station comprises a receiving unit and a processing unit, wherein the receiving unit is used for receiving a first indication that the time sequence information of the adjacent cell and the multiple service cells of the UE are synchronous and a second indication that the time sequence of the adjacent cell and the at least two sets of time sequences corresponding to the multiple service cells of the UE are synchronous, or only receiving the first indication that the time sequence information of the adjacent cell and the multiple service cells of the UE are synchronous and sent by the base station before the cell discovery and measurement are carried out on the adjacent cell;
and the determining unit is used for determining which set of time sequence information of the at least two sets of time sequence information the time sequence of the adjacent region is synchronous with according to the first indication and the second indication, or determining which set of time sequence information of the at least two sets of time sequence information the time sequence of the adjacent region is synchronous with according to the first indication.
Optionally, the second indication is at least one bit that identifies a set of timing information synchronized with the timing information of the neighboring cell, and the determining unit is configured to determine, according to the bit information of the at least one bit, which set of timing information of the at least two sets of timing information the timing of the neighboring cell is synchronized with.
Optionally, the second indication is a plurality of bits identifying ID information of one serving cell synchronized with the neighboring cell timing sequence or a plurality of bits identifying ID information of one serving cell among a plurality of serving cells synchronized with the neighboring cell timing sequence, and the determining unit is configured to determine corresponding ID information according to bit information of the plurality of bits, and determine that the timing sequence of the neighboring cell is synchronized with timing sequence information of the serving cell having the ID information.
Optionally, when the receiving unit receives only a first indication that there is timing information synchronization between the neighboring cell and multiple serving cells of the UE, where the first indication is sent by the base station, the determining unit is configured to determine that the timing of the neighboring cell is synchronized with the timing information of the current primary serving cell.
Optionally, the receiving unit is configured to receive, through an RRC signaling, a second indication of a synchronization relationship between the neighboring cell time sequence sent by the base station and at least two sets of time sequences corresponding to multiple serving cells that have been obtained by the UE.
In a fifth aspect, the present invention provides a base station, where the base station includes the above apparatus for indicating timing information of a neighboring cell.
In a sixth aspect, the present invention provides a ue, where the ue includes the apparatus for acquiring timing information of a neighboring cell.
According to the method, the device, the base station and the user equipment for indicating and acquiring the time sequence information of the adjacent cell provided by the embodiment of the invention, when the UE has a plurality of service cells and at least two sets of time sequence information corresponding to the service cells are acquired, before the UE discovers and measures the cells of the adjacent cell, the base station sends a first indication that the time sequence information of the adjacent cell and the service cells of the UE are synchronous and a second indication that the time sequence of the adjacent cell and the synchronization relation between the time sequence of the adjacent cell and the at least two sets of time sequence information corresponding to the service cells acquired by the UE to the UE, so that the UE can determine which set of time sequence information of the adjacent cell is synchronous with the time sequence information of the at least two sets of time sequence information according to the first indication and the second indication and utilize the time sequence information in the measurement and switching processes, thereby shortening the time delay of measurement and switching of the UE and reducing complexity.
Drawings
FIG. 1 is a flowchart illustrating a method for indicating timing information of a neighboring cell according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a method for obtaining timing information of a neighboring cell according to another embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an apparatus for indicating timing information of a neighboring cell according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an apparatus for acquiring timing information of a neighboring cell according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
An embodiment of the present invention provides a method for indicating timing sequence information of a neighboring cell, where the method is applied to a base station, and as shown in fig. 1, the method includes:
s11, when the UE has a plurality of service cells and has obtained at least two sets of timing information corresponding to the service cells, before the UE finds and measures the cells of the neighboring cell, the base station sends a first indication that the neighboring cell and the plurality of service cells of the UE have synchronization of the timing information and a second indication that the neighboring cell and the UE have obtained synchronization between the timing information and the at least two sets of timing information corresponding to the plurality of service cells to the UE, or only sends the first indication that the neighboring cell and the plurality of service cells of the UE have synchronization of the timing information to the UE.
Specifically, when the number of serving cells is greater than or equal to the number of sets of timing information, the second indication is at least one bit identifying a set of timing information synchronized with the neighboring cell timing information.
When the number of serving cells is greater than or equal to the set number of timing information, the second indication is a plurality of bits identifying ID information of one serving cell synchronized with the timing of the neighboring cell or a plurality of bits identifying ID information of one serving cell among the plurality of serving cells synchronized with the timing of the neighboring cell.
In the method for indicating the time sequence information of the neighboring cell provided by the embodiment of the invention, when the UE has a plurality of serving cells and has obtained at least two sets of time sequence information corresponding to the plurality of serving cells, before the UE finds and measures the cells of the neighboring cell, the base station sends the UE a first indication that the time sequence information of the neighboring cell and the plurality of serving cells of the UE are synchronous and a second indication that the time sequence of the neighboring cell and at least two sets of time sequences corresponding to the plurality of serving cells obtained by the UE are synchronous, so that the UE can determine which set of time sequence information of the neighboring cell is synchronous with which set of time sequence information of the at least two sets of time sequence information according to the first indication and the second indication and utilize the time sequence information in the measuring and switching processes, thereby shortening the time delay of the UE in measuring and switching and reducing the complexity.
The method for indicating the neighbor cell timing information in the above embodiments is described in detail below.
At the base station side, the base station indicates the synchronization relationship between the adjacent cell time sequence and a plurality of sets of time sequences of a plurality of service cells of the UE for the UE.
(1) When the UE has M serving cells and N sets of timing information corresponding to the M serving cells have been obtained (M is not less than N), when the base station configures neighboring cell information for the UE, the base station indicates which set of timing information among the N sets of timing information that the neighboring cell and the UE have obtained is synchronized.
The base station indicates which of the N sets of timing information that the cell and the UE have obtained is synchronized with K bits of information. One way of indicating the type of the K-bit information to the type of the N-type timing information is: in a dual connectivity scenario, when a UE obtains two types of synchronization timing information based on a serving cell (the first type is the timing information of an MSG, and the second type is the timing information of an SCG), a base station indicates, by using 1-bit information, which type of the two types of timing information the timing information of the neighboring cell of the UE is synchronized with, for example: 0 represents the first class and 1 represents the second class.
(2) When the UE has M serving cells and respective timing information of the M serving cells is obtained, and when the base station configures neighbor cell information for the UE, the base station indicates which serving cell of the M serving cells of the UE the timing of the neighbor cell is synchronous with.
In the cell list information of the measurement object, which set of timing information of M sets of timing information of the cell and M serving cells that the UE has obtained is synchronized is indicated by K-bit information. One way of indicating the type of the M-type timing information by the K-bit information is as follows: when the UE obtains M sets of timing information of M serving cells based on the serving cell, the base station indicates the UE which timing information of the M serving cells is synchronous with the timing information of the adjacent cell by using K bit information, and the K bit is used for indicating the cell ID information of the serving cell.
Specifically, the base station may indicate, to the UE, a synchronization relationship between the neighboring cell timing and multiple sets of timings of multiple serving cells of the UE through a Radio Resource Control (RRC) signaling, where the indication may be indicated in the measurement configuration or may be indicated in a measurement object in the measurement configuration.
In the two methods, after the base station indicates that the time sequence information synchronization exists between a certain adjacent cell and the service cell of the UE for the UE, and the UE obtains a plurality of sets of system time sequence information based on a plurality of unsynchronized service cells, the adjacent cell is further indicated to be synchronized with which set of system time sequence information in the plurality of sets of system time sequences obtained by the UE. Optionally, after indicating that timing information synchronization exists between a certain neighboring cell and a serving cell of the UE, the base station may not further specifically indicate which set of system timing information that has been obtained by the neighboring cell and the UE is synchronized by using the two manners. The method of no further indication may be used as a default configuration, and when the UE receives the timing information synchronization between a neighboring cell indicated by the base station and the serving cell of the UE, and does not receive the further synchronization indication information, the UE defaults to synchronize the timing between the neighboring cell and the current main serving cell of the UE. Wherein the primary serving cell may be a PCell (primary cell) of the MCG in a dual connectivity scenario.
An embodiment of the present invention provides a method for acquiring neighbor cell timing sequence information, where the method is applied to a UE, and as shown in fig. 2, the method includes:
s21, when the UE has multiple serving cells and has obtained at least two sets of timing information corresponding to the multiple serving cells, before cell discovery and measurement are performed on the neighboring cells, the UE receives a first indication that the neighboring cells and the multiple serving cells of the UE have timing information synchronization and a second indication that the neighboring cell timing and the at least two sets of timing information corresponding to the multiple serving cells that have been obtained by the UE are synchronized, wherein the first indication is sent by the base station, or only the first indication that the neighboring cells and the multiple serving cells of the UE have timing information synchronization.
And S22, the UE determines which set of time sequence information of the at least two sets of time sequence information the time sequence of the adjacent cell is synchronous with according to the first indication and the second indication, or the UE determines which set of time sequence information of the at least two sets of time sequence information the time sequence of the adjacent cell is synchronous with according to the first indication.
And when the second indication is at least one bit of a set of time sequence information which identifies the synchronization with the time sequence information of the adjacent cell, the UE determines the synchronization between the time sequence of the adjacent cell and which set of time sequence information in the at least two sets of time sequence information according to the bit information of the at least one bit.
And when the second indication is a plurality of bits for identifying the ID information of one serving cell synchronized with the time sequence of the adjacent cell or a plurality of bits for identifying the ID information of one serving cell in a plurality of serving cells synchronized with the time sequence of the adjacent cell, the UE determines the corresponding ID information according to the bit information of the plurality of bits and determines that the time sequence of the adjacent cell is synchronized with the time sequence information of the serving cell with the ID information.
When the UE only receives a first indication that the time sequence information of the adjacent cell and a plurality of service cells of the UE are synchronous, which is sent by a base station, the UE determines that the time sequence of the adjacent cell is synchronous with the time sequence information of the current main service cell.
In the method for acquiring timing information of a neighboring cell according to the embodiment of the present invention, when a UE has multiple serving cells and has acquired at least two sets of timing information corresponding to the multiple serving cells, before the UE performs cell discovery and measurement on the neighboring cell, the UE receives a first indication that the timing information of the neighboring cell and the multiple serving cells of the UE are synchronized, which is sent by a base station, and receives a second indication that the timing information of the neighboring cell and at least two sets of timing information corresponding to the multiple serving cells that the UE has acquired are synchronized, so that the UE can determine, according to the first indication and the second indication, which set of timing information of the at least two sets of timing information the timing information of the neighboring cell is synchronized, and use the timing information in the measurement and switching processes, thereby shortening the time delay of measurement and switching of the UE and reducing complexity.
The method for acquiring the neighbor cell timing information in the above embodiment is described in detail below.
On the UE side, the UE acquires the synchronization relation between the time sequence of the adjacent cell and the multiple sets of time sequences of multiple service cells of the UE based on the base station indication.
(1) When the UE has M serving cells and N sets of timing information corresponding to the M serving cells are obtained (M is not less than N), the UE obtains which set of timing information is synchronized between the neighboring cell and the N sets of timing information obtained by the UE through the neighboring cell information configured by the base station for the UE.
And the UE acquires which set of time sequence of the N sets of time sequence information acquired by the adjacent cell and the UE is synchronous based on the K bit information indicated by the base station. One way of indicating the type of the K-bit information to the type of the N-type timing information is: in a dual connectivity scenario, when a UE obtains two types of synchronization timing information (the first type is the timing information of an MSG, and the second type is the timing information of an SCG) based on a serving cell, the UE knows which type of the two types of timing information the timing information of the neighboring cell is synchronized with based on 1-bit information used by a base station, for example: 0 represents the first class and 1 represents the second class.
(2) When the UE has M serving cells and respective timing information of the M serving cells is obtained, the UE knows, through neighboring cell information configured for the UE by the base station, which serving cell of the M serving cells of the UE has a timing that is synchronous with the neighboring cell.
And the UE acquires which set of time sequence is synchronous in the M sets of time sequence information of the adjacent cell and the M serving cells acquired by the UE based on the K bit information indicated by the base station. One way of indicating the type of the M-type timing information by the K-bit information is as follows: when the UE obtains M sets of timing information of M serving cells based on the serving cell, the UE obtains which timing information of the M serving cells the timing information of the adjacent cell is synchronous with based on K bit information indicated by the base station, and the K bit is used for indicating the cell ID information of the serving cell.
Specifically, the UE may obtain, from the base station in an RRC signaling manner, a synchronization relationship between a neighboring cell timing and multiple sets of timings of multiple serving cells of the UE, where the indication may be indicated in the measurement configuration or may be indicated in a measurement object in the measurement configuration.
In the two methods, after obtaining that the time sequence information synchronization exists between a certain adjacent cell indicated by the base station for the UE and the service cell of the UE based on the UE, and the UE obtains multiple sets of system time sequence information based on multiple unsynchronized service cells, the UE further obtains and indicates which specific set of system time sequence information in the multiple sets of system time sequences obtained by the adjacent cell and the UE is synchronous. Optionally, after indicating that timing information synchronization exists between a certain neighboring cell and a serving cell of the UE, the base station may not further specifically indicate which set of system timing information that has been obtained by the neighboring cell and the UE is synchronized by using the two manners. The method of no further indication is used as a default configuration, and when the UE receives the timing information synchronization between a neighboring cell indicated by the base station and the serving cell of the UE, and does not receive the further synchronization indication information, the UE defaults to the timing synchronization between the neighboring cell and the current main serving cell of the UE. Wherein the primary serving cell may be a PCell of the MCG in a dual connectivity scenario.
The method for acquiring the time sequence information of the neighboring cell according to the present invention is described in detail below with reference to specific embodiments.
Example 1
The UE has 4 serving cells (Cell a, Cell B, Cell C, Cell D). Cell A and Cell B belong to MCG, and Cell A and Cell B are synchronous; cell C and Cell D belong to SCG, and Cell C and Cell D are synchronized. And when the base station configures the measurement information for the UE, configuring the measurement information of the Cell E in a Cell list of a measurement object. Firstly, based on the existing realizable mechanism, the base station indicates that the CellE to be measured of the UE and the serving cell of the UE have time sequence synchronization by using 1-bit information. Further, the base station specifically indicates whether the Cell E is synchronized with the timing corresponding to the Cell in the MCG of the UE or the timing corresponding to the Cell in the SCG of the UE, using the additional 1-bit information. And when the additional 1 bit is set to be 0, the base station indicates the time sequence synchronization corresponding to the neighboring cell and the MCG cell of the UE, and when the additional 1 bit is set to be 1, the base station indicates the time sequence synchronization corresponding to the neighboring cell and the SCG cell of the UE. After receiving the above indication, the UE can determine that the timing information of the cell in the MCG or the cell in the SCG should be used as the timing information of the cell according to the identification of the additional 1-bit indication, and utilize the timing information in the measurement and handover processes.
Example 2
The UE has 4 serving cells (Cell a, Cell B, Cell C, Cell D). The 4 cells are not synchronized, respectively. When the base station configures measurement information for the UE, the measurement information of the Cell E is configured in the Cell list of the measurement object, and the timing information of which corresponding serving Cell of the UE the Cell E is synchronized with is indicated by using the K bit. One way of indicating is that the base station indicates the cell ID by K bits for the UE to determine which serving cell corresponds to the timing information available. For example, after receiving the above-mentioned indication, the UE determines the timing information of the available Cell a as the timing information of the Cell E according to the identification of the K-bit indication, and uses the timing information in the measurement and handover process.
Example 3
The UE has 4 serving cells (Cell a, Cell B, Cell C, Cell D). Cell a and Cell B belong to the MCG, where Cell a is the main serving Cell of the UE in the MCG, and Cell a and Cell B are synchronized. Cell C and Cell D belong to SCG, and Cell C and Cell D are synchronized.
When the base station configures measurement information for the UE, the measurement information of the Cell E is configured in the Cell list of the measurement object, and the base station indicates that the Cell E is synchronized with the serving Cell timing of the UE using 1-bit information in the existing implementable mechanism, but the base station does not further specifically indicate which kind of multiple kinds of timing information of multiple serving cells of the Cell E is synchronized with the UE using K bits in embodiment 1 or embodiment 2. And after receiving the indication, the UE defaults that the time sequence of the adjacent Cell is synchronous with the time sequence of the main service Cell CelA of the current MCG of the UE.
An embodiment of the present invention provides an apparatus for indicating timing information of a neighboring cell, where the apparatus is located in a base station, and as shown in fig. 3, the apparatus includes:
a first sending unit 11, configured to send, to a UE, a first indication that there is timing information synchronization between a neighboring cell and multiple serving cells of the UE before the UE performs cell discovery and measurement on the neighboring cell when the UE has multiple serving cells and has obtained at least two sets of timing information corresponding to the multiple serving cells;
a second sending unit 12, configured to send, to the UE, a second indication of a synchronization relationship between the time sequence of the neighboring cell and at least two sets of time sequences corresponding to multiple serving cells that the UE has obtained, while or after the first sending unit 11 sends, to the UE, a first indication that there is time sequence information synchronization between the neighboring cell and the multiple serving cells of the UE.
Optionally, when the number of serving cells is greater than or equal to the number of sets of timing information, the second indication is at least one bit identifying a set of timing information synchronized with the neighboring cell timing information.
Optionally, when the number of serving cells is greater than or equal to the number of sets of timing information, the second indication is a plurality of bits identifying ID information of one serving cell synchronized with the timing of the neighboring cell or a plurality of bits identifying ID information of one serving cell among the plurality of serving cells synchronized with the timing of the neighboring cell.
Optionally, the second sending unit 12 is configured to send, to the UE through an RRC signaling, a second indication of a synchronization relationship between the neighboring cell time sequence and at least two sets of time sequences corresponding to multiple serving cells that the UE has obtained.
In the apparatus for indicating timing information of a neighboring cell according to the embodiment of the present invention, when a UE has multiple serving cells and has obtained at least two sets of timing information corresponding to the multiple serving cells, before the UE performs cell discovery and measurement on the neighboring cell, a base station sends, to the UE, a first indication that the timing information of the neighboring cell and the multiple serving cells of the UE are synchronized, and sends, to the UE, a second indication that the timing information of the neighboring cell and at least two sets of timing information corresponding to the multiple serving cells that the UE has obtained are synchronized, so that the UE can determine, according to the first indication and the second indication, which set of timing information of the at least two sets of timing information the timing information is synchronized with the timing information of the neighboring cell, and use the timing information in a measurement and switching process, thereby shortening a time delay of measurement and switching performed by the UE, and reducing complexity.
The apparatus of this embodiment may be configured to implement the technical solution of the method for indicating timing information of a neighboring cell, and the implementation principle and the technical effect are similar, which are not described herein again.
An embodiment of the present invention provides an apparatus for acquiring timing information of a neighboring cell, where the apparatus is located in a user equipment, and as shown in fig. 4, the apparatus includes:
a receiving unit 21, configured to receive, when a UE has multiple serving cells and has obtained at least two sets of timing information corresponding to the multiple serving cells, a first indication that the neighboring cell and the multiple serving cells of the UE have timing information synchronization and a second indication that the neighboring cell and the multiple serving cells of the UE have synchronization relationship between the timing information sent by the base station and the at least two sets of timing information corresponding to the multiple serving cells obtained by the UE before performing cell discovery and measurement on the neighboring cell, or receive only the first indication that the neighboring cell and the multiple serving cells of the UE have timing information synchronization and that the base station sends;
the determining unit 22 is configured to determine, according to the first indication and the second indication, which set of timing information in the at least two sets of timing information the timing of the neighboring cell is synchronized with, or determine, according to the first indication, which set of timing information in the at least two sets of timing information the timing of the neighboring cell is synchronized with.
Optionally, the second indication is at least one bit that identifies a set of timing information synchronized with the timing information of the neighboring cell, and the determining unit 22 is configured to determine, according to the bit information of the at least one bit, which set of timing information of the at least two sets of timing information the timing of the neighboring cell is synchronized with.
Optionally, the second indication is a plurality of bits of ID information identifying one serving cell synchronized with the neighboring cell timing sequence or a plurality of bits of ID information identifying one serving cell among a plurality of serving cells synchronized with the neighboring cell timing sequence, and the determining unit 22 is configured to determine corresponding ID information according to bit information of the plurality of bits, and determine that the timing sequence of the neighboring cell is synchronized with the timing sequence information of the serving cell having the ID information.
Optionally, when the receiving unit 21 receives only the first indication that the timing information of the neighboring cell and the multiple serving cells of the UE are synchronized, which is sent by the base station, the determining unit 22 is configured to determine that the timing of the neighboring cell is synchronized with the timing information of the current primary serving cell.
Optionally, the receiving unit 21 is configured to receive, through an RRC signaling, a second indication of a synchronization relationship between the neighboring cell time sequence sent by the base station and at least two sets of time sequences corresponding to multiple serving cells that have been obtained by the UE.
In the apparatus for acquiring timing information of a neighboring cell according to the embodiment of the present invention, when a UE has multiple serving cells and has acquired at least two sets of timing information corresponding to the multiple serving cells, before the UE performs cell discovery and measurement on the neighboring cell, the UE receives a first indication that the timing information of the neighboring cell and the multiple serving cells of the UE are synchronized, which is sent by a base station, and receives a second indication that the timing information of the neighboring cell and at least two sets of timing information corresponding to the multiple serving cells that the UE has acquired are synchronized, so that the UE can determine, according to the first indication and the second indication, which set of timing information of the at least two sets of timing information the timing information is synchronized with the timing information of the neighboring cell, and use the timing information in the measurement and switching processes, thereby shortening the time delay of measurement and switching of the UE and reducing complexity.
The apparatus of this embodiment may be configured to implement the technical solution of the above method for obtaining timing information of a neighboring cell, and the implementation principle and the technical effect are similar, which are not described herein again.
The embodiment of the invention also provides a base station, which comprises the device for indicating the time sequence information of the adjacent cell.
The embodiment of the invention also provides the user equipment which comprises the device for acquiring the time sequence information of the adjacent region.
The embodiment of the invention is suitable for dual connectivity scenarios, such as LTE-NR dual connectivity and NR-NR dual connectivity, but is not limited thereto.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (16)
1. A method for indicating neighbor cell timing information, the method being applied to a base station, the method comprising:
when a plurality of service cells exist in UE and at least two sets of time sequence information corresponding to the service cells are obtained, before the UE conducts cell discovery and measurement on the adjacent cells, a first indication that the adjacent cells are synchronous with the time sequence information of the service cells of the UE is sent to the UE, and a second indication that the time sequence of the adjacent cells is synchronous with the time sequence of the service cells obtained by the UE is sent to the UE, wherein when the number of the service cells is larger than or equal to the number of the time sequence information, the second indication is at least one bit for identifying one set of time sequence information synchronous with the time sequence information of the adjacent cells; or, the second indication is a plurality of bits of ID information identifying one serving cell synchronized with the neighbor cell timing sequence or a plurality of bits of ID information of one serving cell among a plurality of serving cells synchronized with the neighbor cell timing sequence; or only sending a first indication that the time sequence information synchronization exists between the adjacent cell and a plurality of service cells of the UE to the UE, wherein when the UE receives the time sequence information synchronization between a certain adjacent cell indicated by the base station and the service cell of the UE and does not receive the second indication, the UE defaults the time sequence synchronization between the adjacent cell and the current main service cell of the UE.
2. The method of claim 1, wherein the sending, to the UE, the second indication of the synchronization relationship between the neighboring cell timing sequence and at least two sets of timing sequences corresponding to the plurality of serving cells that the UE has acquired comprises: and sending a second indication of the synchronization relationship between the adjacent cell time sequence and at least two sets of time sequences corresponding to a plurality of service cells acquired by the UE to the UE through Radio Resource Control (RRC) signaling.
3. A method for obtaining neighbor cell timing information is applied to user equipment, and the method is characterized by comprising the following steps:
when a plurality of service cells exist in UE and at least two sets of time sequence information corresponding to the service cells are obtained, before cell discovery and measurement are carried out on the adjacent cells, a first indication that the time sequence information of the adjacent cells and the service cells of the UE are synchronous and a second indication of a synchronous relation between the time sequence of the adjacent cells and the at least two sets of time sequences corresponding to the service cells obtained by the UE are sent by a base station are received, wherein when the number of the service cells is larger than or equal to the number of the time sequence information, the second indication is at least one bit for identifying one set of time sequence information synchronous with the time sequence information of the adjacent cells; or, the second indication is a plurality of bits of ID information identifying one serving cell synchronized with the neighbor cell timing sequence or a plurality of bits of ID information of one serving cell among a plurality of serving cells synchronized with the neighbor cell timing sequence; or only receiving a first indication that the time sequence information synchronization exists between the adjacent cell and a plurality of service cells of the UE, wherein the first indication is sent by the base station, and when the UE receives the second indication that the time sequence information synchronization between a certain adjacent cell indicated by the base station and the service cell of the UE is not received, the UE defaults the time sequence synchronization between the adjacent cell and the current main service cell of the UE;
and determining the time sequence of the adjacent cell to be synchronous with which set of time sequence information in the at least two sets of time sequence information according to the first indication and the second indication, or determining the time sequence of the adjacent cell to be synchronous with which set of time sequence information in the at least two sets of time sequence information according to the first indication.
4. The method of claim 3, wherein the second indication is at least one bit identifying a set of timing information synchronized with the timing information of the neighboring cell, and wherein determining from the first indication and the second indication which of the at least two sets of timing information the timing of the neighboring cell is synchronized with comprises: and determining the time sequence of the adjacent region to be synchronous with which set of time sequence information in the at least two sets of time sequence information according to the bit information of the at least one bit.
5. The method of claim 3, wherein the second indication is a plurality of bits of ID information identifying one serving cell that is timing synchronized with the neighboring cell or a plurality of bits of ID information of one of a plurality of serving cells that is timing synchronized with the neighboring cell, and wherein determining which of the at least two sets of timing information the timing of the neighboring cell is synchronized with according to the first indication and the second indication comprises: and determining corresponding ID information according to the bit information of the plurality of bits, and determining that the time sequence of the adjacent cell is synchronous with the time sequence information of the service cell with the ID information.
6. The method of claim 3, wherein the determining from the first indication which of the at least two sets of timing information the timing of the neighbor cell is synchronized comprises: and determining that the time sequence of the adjacent cell is synchronous with the time sequence information of the current main service cell.
7. The method according to any of claims 3 to 6, wherein the receiving a second indication of a synchronization relationship between the neighboring cell timing sequence sent by the base station and at least two sets of timing sequences corresponding to a plurality of serving cells that the UE has acquired comprises: and receiving a second indication of the synchronization relationship between the adjacent cell time sequence sent by the base station and at least two sets of time sequences corresponding to a plurality of service cells acquired by the UE through RRC signaling.
8. An apparatus for indicating timing information of a neighboring cell, the apparatus being located at a base station, the apparatus comprising:
the first sending unit is used for sending a first indication that the time sequence information of the adjacent cell and the plurality of service cells of the UE are synchronous to each other to the UE before the UE conducts cell discovery and measurement on the adjacent cell when the UE has a plurality of service cells and obtains at least two sets of time sequence information corresponding to the plurality of service cells, wherein when the UE receives a second indication that the time sequence information of a certain adjacent cell and the service cells of the UE is synchronous and the UE does not receive the second indication, the UE defaults the time sequence synchronization of the adjacent cell and the current main service cell of the UE;
a second sending unit, configured to send, to the UE, a second indication of a synchronization relationship between a time sequence of the neighboring cell and at least two sets of time sequences corresponding to multiple serving cells that the UE has obtained, while or after the first sending unit sends, to the UE, a first indication that the time sequence information of the neighboring cell and the multiple serving cells of the UE are synchronized, where, when the number of serving cells is greater than or equal to the set number of time sequence information, the second indication is at least one bit that identifies one set of time sequence information that is synchronized with the time sequence information of the neighboring cell; or, the second indication is a plurality of bits of ID information identifying one serving cell synchronized with the neighbor cell timing sequence or a plurality of bits of ID information of one serving cell among a plurality of serving cells synchronized with the neighbor cell timing sequence.
9. The apparatus of claim 8, wherein the second sending unit is configured to send, to the UE through RRC signaling, a second indication of a synchronization relationship between the neighboring cell timing and at least two sets of timings corresponding to multiple serving cells that the UE has obtained.
10. An apparatus for obtaining timing information of a neighboring cell, the apparatus being located at a user equipment, the apparatus comprising:
the base station comprises a receiving unit and a processing unit, wherein the receiving unit is used for receiving a first indication that the time sequence information of the adjacent cell and the multiple service cells of the UE are synchronous and a second indication that the time sequence of the adjacent cell and the synchronization relation between the time sequence of the adjacent cell and the at least two sets of time sequences corresponding to the multiple service cells obtained by the UE are synchronous, wherein the first indication is sent by the base station and is sent by the base station before the cell discovery and measurement are carried out on the adjacent cell, and the second indication is at least one bit for identifying one set of time sequence information synchronous with the time sequence information of the adjacent cell when the number of the service cells is larger than or equal to the number of the sets of time sequence information; or, the second indication is a plurality of bits of ID information identifying one serving cell synchronized with the neighbor cell timing sequence or a plurality of bits of ID information of one serving cell among a plurality of serving cells synchronized with the neighbor cell timing sequence; or only receiving a first indication that the time sequence information synchronization exists between the adjacent cell and a plurality of service cells of the UE, wherein the first indication is sent by the base station, and when the UE receives the second indication that the time sequence information synchronization between a certain adjacent cell indicated by the base station and the service cell of the UE is not received, the UE defaults the time sequence synchronization between the adjacent cell and the current main service cell of the UE;
and the determining unit is used for determining which set of time sequence information of the at least two sets of time sequence information the time sequence of the adjacent region is synchronous with according to the first indication and the second indication, or determining which set of time sequence information of the at least two sets of time sequence information the time sequence of the adjacent region is synchronous with according to the first indication.
11. The apparatus of claim 10, wherein the second indication is at least one bit identifying a set of timing information synchronized with the timing information of the neighboring cell, and wherein the determining unit is configured to determine, according to bit information of the at least one bit, which set of timing information of the at least two sets of timing information the timing of the neighboring cell is synchronized with.
12. The apparatus of claim 10, wherein the second indication is a plurality of bits of ID information identifying one serving cell synchronized in timing with the neighboring cell or a plurality of bits of ID information identifying one serving cell among a plurality of serving cells synchronized in timing with the neighboring cell, and wherein the determining unit is configured to determine the corresponding ID information according to the bit information of the plurality of bits, and determine that the timing of the neighboring cell is synchronized with the timing information of the serving cell having the ID information.
13. The apparatus of claim 10, wherein when the receiving unit receives only a first indication that the timing information of the neighboring cell and multiple serving cells of the UE are synchronized, which is sent by a base station, the determining unit is configured to determine that the timing of the neighboring cell is synchronized with the timing information of a current primary serving cell.
14. The apparatus according to any one of claims 10 to 13, wherein the receiving unit is configured to receive, through RRC signaling, a second indication of a synchronization relationship between the neighboring cell timing sequence sent by the base station and at least two sets of timing sequences corresponding to a plurality of serving cells that have been obtained by the UE.
15. A base station, characterized in that it comprises means for indicating neighbour timing information as claimed in any one of claims 8 to 9.
16. A user equipment, characterized in that the user equipment comprises the apparatus for acquiring timing information of a neighboring cell according to any one of claims 10 to 14.
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