CN110474728B - Selection method and terminal for synchronous message sending carrier - Google Patents

Selection method and terminal for synchronous message sending carrier Download PDF

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Publication number
CN110474728B
CN110474728B CN201810447819.0A CN201810447819A CN110474728B CN 110474728 B CN110474728 B CN 110474728B CN 201810447819 A CN201810447819 A CN 201810447819A CN 110474728 B CN110474728 B CN 110474728B
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carrier
synchronous
synchronization
priority
message sending
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CN110474728A (en
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李晨鑫
赵锐
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Datang Mobile Communications Equipment Co Ltd
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Datang Mobile Communications Equipment Co Ltd
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0003Two-dimensional division
    • H04L5/0005Time-frequency
    • H04L5/0007Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signaling, i.e. of overhead other than pilot signals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058Allocation criteria
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W56/00Synchronisation arrangements
    • H04W56/001Synchronization between nodes

Abstract

The invention provides a method and a terminal for selecting a synchronous message sending carrier, which solve the problem that when UE is configured on a selected synchronous reference carrier to send a synchronous message, the synchronous reference carrier does not exist, and further the UE cannot determine the carrier for sending the synchronous message. The method of the embodiment of the invention comprises the following steps: selecting a synchronous message sending carrier from an available synchronous carrier set; and sending the synchronization message on the selected synchronization message sending carrier. According to the embodiment of the invention, one carrier is selected as the synchronous message sending carrier according to different selection rules, rather than the synchronous reference carrier is selected as the synchronous message sending carrier, so that the problem that the UE cannot determine the carrier for sending the synchronous message when the UE is configured on the selected synchronous reference carrier to send the synchronous message is solved.

Description

Selection method and terminal for synchronous message sending carrier
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and a terminal for selecting a synchronization message transmission carrier.
Background
In the 3GPP RAN #74 conference, it is determined that CA (Carrier Aggregation) is introduced into V2X (vehicle to evolution) to support multi-Carrier transmission.
In the 3GPP RAN1#92bis conference, for a carrier aggregation situation, how a UE (User Equipment, also called a terminal) sends a Synchronization message, including SLSS (direct link Synchronization Signal) and PSBCH (Physical downlink Broadcast Channel) messages form a conclusion, and one of two ways can be supported according to the UE capability:
mode 1: the UE transmits the SLSS according to an R14 mechanism on a synchronous reference carrier selected from Set-B;
mode 2: the UE sends SLSS on all carriers in Set-B;
the Set-B is an available synchronous carrier Set determined from the Set-A by the terminal according to the carrier condition of the current carrier aggregation of the terminal; the Set-a is a carrier Set which can be used for synchronization in carriers which can be used for carrier aggregation transmission and/or reception and are configured or preconfigured by the network side.
The choice of which carriers in Set-B to transmit SLSS depends on the UE implementation if the UE transmission capability is limited.
Then, if the UE is configured to transmit the synchronization message in the manner 1, if the current UE is directly synchronized with a GNSS (Global Navigation Satellite System) on all carriers or the current UE is directly synchronized with the eNB on all carriers, the synchronization reference carrier cannot be selected in Set-B, and therefore, from the perspective of transmitting the synchronization message, the UE cannot determine the carrier on which the synchronization message is transmitted because there is no selected synchronization reference carrier.
On the other hand, even if there is a selected synchronization reference carrier, since the selection of the synchronization reference carrier is semi-static or static under the existing mechanism, whether to perform synchronization reference carrier reselection when the synchronization reference signal is lost depends on the UE implementation. When the UE is configured to transmit the synchronization message on the selected synchronization reference carrier, it may cause a situation that some UEs (e.g., R14UE) cannot acquire the high-priority synchronization information from the system perspective (R15UE all transmit the synchronization message on the carrier transmitting only R15 traffic).
Disclosure of Invention
The invention aims to provide a method and a terminal for selecting a synchronous message sending carrier, which are used for solving the problem that when UE is configured or preconfigured by a network side to send a synchronous message on a selected synchronous reference carrier, the synchronous reference carrier does not exist, and further the UE cannot determine the carrier for sending the synchronous message.
In order to achieve the above object, the present invention provides a method for selecting a synchronization message transmission carrier, which is applied to a terminal and includes:
selecting a synchronous message sending carrier from an available synchronous carrier set;
and sending the synchronization message on the selected synchronization message sending carrier.
Wherein, after the step of transmitting the synchronization message on the selected synchronization message transmission carrier, the method further comprises:
and when the reselection triggering condition of the synchronous message sending carrier is met, reselecting one synchronous message sending carrier.
Wherein the step of selecting one synchronization message transmission carrier from the available synchronization carrier set comprises:
and using the synchronization reference carrier selected from the available synchronization carrier set as the synchronization message sending carrier.
Wherein the step of selecting one synchronization message transmission carrier from the available synchronization carrier set comprises:
randomly selecting one carrier from the available synchronization carrier set as the synchronization message transmission carrier.
Wherein the step of selecting one synchronization message transmission carrier from the available synchronization carrier set comprises:
when different synchronous message sending bandwidths can be configured on different carriers, selecting a target carrier with the smallest synchronous message sending bandwidth from the available synchronous carrier set as the synchronous message sending carrier.
Wherein the selecting a target carrier with a minimum synchronization message transmission bandwidth from the available synchronization carrier set as the synchronization message transmission carrier includes:
when at least two target carriers exist in the available synchronization carrier set, selecting the target carrier with the minimum frequency from the at least two target carriers as the synchronization message sending carrier; or, randomly selecting one target carrier from at least two target carriers as the synchronous message sending carrier.
Wherein the step of selecting one synchronization message transmission carrier from the available synchronization carrier set comprises:
and selecting the carrier with the minimum frequency from the available synchronization carrier set as the synchronization message sending carrier.
Wherein the step of selecting one synchronization message transmission carrier from the available synchronization carrier set comprises:
sorting the second priorities of the carriers in the available set of synchronization carriers according to the first priority of the synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set;
determining N carriers with the highest second priority in the sorted carriers, wherein N is a positive integer;
and randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
Wherein, when meeting the reselection triggering condition of the synchronous message sending carrier, the step of reselecting one synchronous message sending carrier comprises the following steps:
when the terminal cannot detect a GNSS synchronization signal of the global navigation satellite system, reselecting a synchronization message sending carrier;
or, when the terminal selects the synchronous reference carrier or reselects the synchronous reference carrier, reselecting a synchronous message sending carrier;
or, when the terminal determines the available synchronous carrier set again, the terminal reselects a synchronous message sending carrier;
or, when the value of a counter for counting the sending times of the synchronous messages is a preset value, reselecting a synchronous message sending carrier, wherein the counter is configured or preconfigured at the network side;
or, according to the first priority of the synchronization signal on each carrier, sorting the second priority of the carriers in the available synchronization carrier set; and if the second priority of the synchronous message sending carriers is ranked in the first N highest in the second priority, reselecting one synchronous message sending carrier, wherein the priority of each carrier refers to the highest priority of the synchronous signal of each carrier, the first priority is the highest priority of the synchronous signal on a single carrier, the second priority is the priority selected by the synchronous message sending carriers in the available synchronous carrier set, and N is a positive integer.
In order to achieve the above object, an embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor implementing the steps when executing the program of:
selecting a synchronous message sending carrier from an available synchronous carrier set;
transmitting a synchronization message through the transceiver on the selected synchronization message transmission carrier.
Wherein the processor, when executing the program, further implements the steps of:
and when the reselection triggering condition of the synchronous message sending carrier is met, reselecting one synchronous message sending carrier.
Wherein the processor, when executing the program, further implements the steps of:
and using the synchronization reference carrier selected from the available synchronization carrier set as the synchronization message sending carrier.
Wherein the processor, when executing the program, further implements the steps of:
randomly selecting one carrier from the available synchronization carrier set as the synchronization message transmission carrier.
Wherein the processor, when executing the program, further implements the steps of:
when different synchronous message sending bandwidths can be configured on different carriers, selecting a target carrier with the smallest synchronous message sending bandwidth from the available synchronous carrier set as the synchronous message sending carrier.
Wherein the processor, when executing the program, further implements the steps of:
when at least two target carriers exist in the available synchronization carrier set, selecting the target carrier with the minimum frequency from the at least two target carriers as the synchronization message sending carrier; or, randomly selecting one target carrier from at least two target carriers as the synchronous message sending carrier.
Wherein the processor, when executing the program, further implements the steps of:
and selecting the carrier with the minimum frequency from the available synchronization carrier set as the synchronization message sending carrier.
Wherein the processor, when executing the program, further implements the steps of:
sorting the second priorities of the carriers in the available set of synchronization carriers according to the first priority of the synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set;
determining N carriers with the highest second priority in the sorted carriers, wherein N is a positive integer;
and randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
Wherein the processor, when executing the program, further implements the steps of:
when the terminal cannot detect a GNSS synchronization signal of the global navigation satellite system, reselecting a synchronization message sending carrier;
or, when the terminal selects the synchronous reference carrier or reselects the synchronous reference carrier, reselecting a synchronous message sending carrier;
or, when the terminal determines the available synchronous carrier set again, the terminal reselects a synchronous message sending carrier;
or, when the value of a counter for counting the sending times of the synchronous messages is a preset value, reselecting a synchronous message sending carrier, wherein the counter is configured or preconfigured at the network side;
or, according to the first priority of the synchronization signal on each carrier, sorting the second priority of the carriers in the available synchronization carrier set; and if the second priority of the synchronous message sending carriers is ranked in the first N highest in the second priority, reselecting one synchronous message sending carrier, wherein the priority of each carrier refers to the highest priority of the synchronous signal of each carrier, the first priority is the highest priority of the synchronous signal on a single carrier, the second priority is the priority selected by the synchronous message sending carriers in the available synchronous carrier set, and N is a positive integer.
In order to achieve the above object, an embodiment of the present invention further provides a computer-readable storage medium on which a computer program is stored, which, when executed by a processor, implements the steps of the method for selecting a synchronization message transmission carrier as described above.
In order to achieve the above object, an embodiment of the present invention further provides a terminal, including:
a selection module, configured to select a synchronization message sending carrier from an available synchronization carrier set;
and the sending module is used for sending the synchronous message on the selected synchronous message sending carrier.
Wherein, above-mentioned terminal station still includes:
and the reselection module is used for reselecting one synchronous message sending carrier when the reselection triggering condition of the synchronous message sending carrier is met.
Wherein the selection module is configured to use a synchronization reference carrier selected from the available synchronization carrier set as the synchronization message transmission carrier.
The reselection module is used for reselecting a synchronous message sending carrier when the terminal cannot detect a GNSS synchronous signal of the global navigation satellite system;
or, when the terminal selects the synchronous reference carrier or reselects the synchronous reference carrier, reselecting a synchronous message sending carrier;
or, when the terminal determines the available synchronous carrier set again, the terminal reselects a synchronous message sending carrier;
or, when the value of a counter for counting the sending times of the synchronous messages is a preset value, reselecting a synchronous message sending carrier, wherein the counter is configured or preconfigured at the network side;
or, according to the first priority of the synchronization signal on each carrier, sorting the second priority of the carriers in the available synchronization carrier set; and if the second priority of the synchronous message sending carriers is ranked in the first N highest in the second priority, reselecting one synchronous message sending carrier, wherein the priority of each carrier refers to the highest priority of the synchronous signal of each carrier, the first priority is the highest priority of the synchronous signal on a single carrier, the second priority is the priority selected by the synchronous message sending carriers in the available synchronous carrier set, and N is a positive integer.
The embodiment of the invention has the following beneficial effects:
according to the technical scheme of the embodiment of the invention, one synchronous message sending carrier is selected from an available synchronous carrier set; and sending the synchronization message on the selected synchronization message sending carrier. In the embodiment of the invention, one carrier is selected as a synchronous message sending carrier according to different selection rules, rather than a synchronous reference carrier is selected as the synchronous message sending carrier, if the synchronous reference carrier exists, the synchronous reference carrier can be selected as the synchronous message sending carrier, and if the synchronous reference carrier does not exist, the synchronous reference carrier can be selected randomly, or the carrier with the minimum bandwidth or the minimum frequency can be selected as the synchronous message sending carrier, so that the problem that the UE cannot determine the carrier for sending the synchronous message when the UE is configured on the selected synchronous reference carrier to send the synchronous message is solved.
Drawings
Fig. 1 is a flowchart illustrating a method for selecting a synchronization message transmission carrier according to an embodiment of the present invention;
fig. 2 is a block diagram of a terminal according to an embodiment of the present invention;
fig. 3 is a block diagram of a terminal according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings.
Currently, the synchronization method for carrier aggregation in 3GPP R15 has the following synchronization scheme:
(1) higher layer configuration of the carrier available for synchronization (Set-a);
if Set-A is an empty Set, independently executing the synchronization process of R14 on each carrier;
the radio access network RAN1 considers that only carriers using the same synchronization reference may be aggregated, e.g. GNSS or the same evolved Node B (eNodeB, also known as base station in LTE).
If Set-A is configured:
the synchronization carrier must be a subset of the carriers used for carrier aggregation; the UE determines an available synchronization carrier (Set-B) from a synchronization carrier Set configured by a higher layer based on the current carrier condition for aggregation.
For available synchronization carriers (Set-B):
if Set-B is an empty Set, independently performing the synchronization process of R14 on each carrier;
if only one synchronous carrier exists, the synchronous reference of the synchronous carrier is taken as the synchronous reference of all the aggregated carriers
If more than 2 synchronous carriers exist, the UE selects the carrier where the highest priority synchronous signal is located as a synchronous reference carrier;
performing synchronous reference carrier reselection when a synchronous reference signal is lost depends on the UE implementation.
However, in the above mechanism, when the UE is configured to send the synchronization message on the selected synchronization reference carrier, there is no synchronization reference carrier, which further causes a problem that the UE cannot determine the carrier on which the synchronization message is sent.
To solve the problem, an embodiment of the present invention provides a method for selecting a synchronization message transmission carrier, which is applied to a terminal, and as shown in fig. 1, the method for selecting includes:
step 101: one synchronization message transmission carrier is selected among the available set of synchronization carriers.
Specifically, when the terminal is configured or preconfigured by the network side to send the synchronization message on non-multiple carriers in the available synchronization carrier set, one synchronization message sending carrier is selected from the available synchronization carrier set.
The available synchronous carrier Set-B is an available synchronous carrier Set determined from Set-A by the terminal according to the carrier condition of the current carrier aggregation of the terminal; the Set-a is a carrier Set which can be used for synchronization in carriers which can be used for carrier aggregation transmission and/or reception and are configured or preconfigured by the network side. The selected synchronization message sending carrier is a synchronization reference carrier in an available synchronization carrier set or any one carrier in the synchronization carrier set or a carrier with the minimum synchronization message sending bandwidth or the minimum frequency.
Specifically, when the terminal is directly synchronized with the GNSS and configured to transmit the synchronization message on one carrier in the available synchronization carrier set, one synchronization message transmission carrier is selected from the available synchronization carrier set.
Step 102: and sending the synchronization message on the selected synchronization message sending carrier.
The synchronization message includes an SLSS and a PSBCH.
The selection method of the synchronous message sending carrier wave of the embodiment of the invention selects a synchronous message sending carrier wave from an available synchronous carrier wave set; and sending the synchronization message on the selected synchronization message sending carrier. In the embodiment of the invention, one carrier is selected as a synchronous message sending carrier according to different selection rules, rather than a synchronous reference carrier is selected as the synchronous message sending carrier, if the synchronous reference carrier exists, the synchronous reference carrier can be selected as the synchronous message sending carrier, and if the synchronous reference carrier does not exist, the synchronous reference carrier can be selected randomly, or the carrier with the minimum bandwidth or the minimum frequency can be selected as the synchronous message sending carrier, so that the problem that the UE cannot determine the carrier for sending the synchronous message when the UE is configured on the selected synchronous reference carrier to send the synchronous message is solved.
As a first optional implementation manner, the step 101 includes:
and using the synchronization reference carrier selected from the available synchronization carrier set as the synchronization message sending carrier.
And when the synchronous reference carrier exists in the available synchronous carrier set, using the selected synchronous reference carrier as the synchronous message sending carrier.
In a specific embodiment of the present invention, when there is no synchronization reference carrier or there is a synchronization reference carrier in the available synchronization carrier set, a synchronization message transmission carrier is determined according to the following implementation manner.
As a second optional implementation manner, the step 101 includes:
randomly selecting one carrier from the available synchronization carrier set as the synchronization message transmission carrier.
Specifically, when no synchronization reference carrier exists in the available synchronization carrier set, the terminal randomly selects one carrier from the available synchronization carrier set as the synchronization message sending carrier;
or, when a synchronization reference carrier exists in the available synchronization carrier set, the terminal randomly selects one carrier from the available synchronization carrier set as the synchronization message sending carrier.
The terminal may randomly select one carrier from the available synchronization carrier set as the synchronization message transmission carrier according to an existing random selection algorithm.
As a third optional implementation manner, the step 101 includes:
when different synchronous message sending bandwidths can be configured on different carriers, selecting a target carrier with the smallest synchronous message sending bandwidth from the available synchronous carrier set as the synchronous message sending carrier.
Specifically, when no synchronization reference carrier exists in the available synchronization carrier set and different synchronization message sending bandwidths can be configured on different carriers, the terminal selects a target carrier with the minimum synchronization message sending bandwidth from the available synchronization carrier set as the synchronization message sending carrier;
or, when a synchronization reference carrier exists in the available synchronization carrier set and different synchronization message sending bandwidths can be configured on different carriers, the terminal selects a target carrier with the minimum synchronization message sending bandwidth from the available synchronization carrier set as the synchronization message sending carrier.
By selecting the target carrier with the minimum synchronous message sending bandwidth from the available synchronous carrier set as the synchronous message sending carrier, the power spectral density of the synchronous message sending can be ensured to be higher.
Further, when at least two target carriers exist in the available synchronization carrier set, selecting a target carrier with the minimum frequency from the at least two target carriers as the synchronization message sending carrier; or, randomly selecting one target carrier from the at least two target carriers as the synchronization message transmission carrier.
As a fourth optional implementation manner, the step 101 includes:
and selecting the carrier with the minimum frequency from the available synchronization carrier set as the synchronization message sending carrier.
Specifically, when no synchronization reference carrier exists in the available synchronization carrier set, the terminal selects a carrier with the minimum frequency as the synchronization message sending carrier in the available synchronization carrier set;
or, when a synchronization reference carrier exists in the available synchronization carrier set, the terminal selects a carrier with the minimum frequency as the synchronization message sending carrier in the available synchronization carrier set.
As a fifth optional implementation manner, the step 101 includes:
sorting the second priorities of the carriers in the available set of synchronization carriers according to the first priority of the synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set;
determining N carriers with the highest second priority in the sorted carriers, wherein N is a positive integer;
and randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
Wherein N is configured or preconfigured by the network side.
Specifically, when no synchronization reference carrier exists in the available synchronization carrier set, the terminal sorts the second priority of the carriers in the available synchronization carrier set according to the first priority of the synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set; determining N carriers with the highest second priority in the sorted carriers, wherein N is a positive integer; and randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
Or when the available synchronization carrier set has the synchronization reference carrier, the terminal sorts the second priority of the carriers in the available synchronization carrier set according to the first priority of the synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set; determining N carriers with the highest second priority in the sorted carriers, wherein N is a positive integer; and randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
In the implementation, the UE sorts the highest priority of the synchronization signal of each carrier from an available synchronization carrier Set (Set-B), and the number of carriers is recorded as M; and according to the sorting, excluding N carriers with highest priority of the synchronization signals (N is less than or equal to M-1), and then randomly selecting one carrier as a synchronization message sending carrier from the rest (M-N) carriers.
The carrier wave is sent by the synchronous message on the carrier wave with lower synchronous message priority selected by the UE, thereby avoiding the condition that some part of the UE in the system can not receive the synchronous signal with high priority continuously.
Further, after the step 102, the method further includes:
step 103: and when the reselection triggering condition of the synchronous message sending carrier is met, reselecting one synchronous message sending carrier.
For example, when the UE selects the synchronization message transmission carrier, there is no synchronization reference carrier, and when the UE selects the synchronization reference carrier, it needs to trigger reselection of the synchronization message transmission carrier, or when the UE selects the synchronization message transmission carrier to perform synchronization message transmission for a certain number of times, it triggers reselection of the synchronization message transmission carrier.
As a first optional implementation manner, the step 103 includes:
and when the terminal can not detect the GNSS synchronization signal, reselecting a synchronization message transmission carrier.
As a second optional implementation manner, the step 103 includes:
and when the terminal selects the synchronous reference carrier or reselects the synchronous reference carrier, reselecting one synchronous message transmission carrier.
As a third optional implementation manner, the step 103 includes:
when the terminal re-determines the available set of synchronization carriers, one synchronization message transmission carrier is re-selected.
As a fourth optional implementation manner, the step 103 includes:
and when the value of a counter for counting the sending times of the synchronous messages is a preset value, reselecting a synchronous message sending carrier, wherein the counter is configured or preconfigured at the network side.
And configuring or pre-configuring a counter for counting the sending times of the synchronous messages by the network side, wherein an initial value is configured or pre-configured by the network side, the counter is decreased by one every time the synchronous messages are sent, and when the counter is 0, the counter triggers the reselection of the carrier wave sent by the synchronous messages and resets the counter.
As a fifth optional implementation manner, the step 103 includes:
sorting the second priorities of the carriers in the available set of synchronization carriers according to the first priority of the synchronization signal on each carrier; and if the second priority of the synchronous message sending carriers is ranked in the first N highest in the second priority, reselecting one synchronous message sending carrier, wherein the priority of each carrier refers to the highest priority of the synchronous signal of each carrier, the first priority is the highest priority of the synchronous signal on a single carrier, the second priority is the priority selected by the synchronous message sending carriers in the available synchronous carrier set, and N is a positive integer.
Specifically, the number of carriers in Set-B is marked as M, and the highest priority of the synchronous signals of each carrier in Set-B is sorted; and when the priority of the highest priority synchronization signal on the carrier sending the synchronization message is ranked in the top N, and N is configured or preconfigured by the network side, triggering the reselection of the carrier sending the synchronization message.
The selection method of the synchronous message sending carrier wave of the embodiment of the invention selects a synchronous message sending carrier wave from an available synchronous carrier wave set; transmitting a synchronization message on the selected synchronization message transmission carrier; when the reselection triggering condition of the synchronous message sending carrier is met, one synchronous message sending carrier is reselected, so that the problem that the UE is configured on the selected synchronous reference carrier to send the synchronous message but the synchronous reference carrier does not exist in the existing mechanism can be solved, and the problem that part of the UE cannot continuously receive the high-priority synchronous message due to the fact that the synchronous message sending is excessively concentrated on part of the carriers in the existing mechanism can be avoided.
As shown in fig. 2, an embodiment of the present invention further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor implementing the steps when executing the program of:
selecting a synchronous message sending carrier from an available synchronous carrier set;
transmitting a synchronization message through the transceiver on the selected synchronization message transmission carrier.
Where in fig. 2, the bus architecture may include any number of interconnected buses and bridges, with various circuits of one or more processors, represented by processor 200, and memory, represented by memory 220, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 210 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 230 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.
The processor 200 is responsible for managing the bus architecture and general processing, and the memory 220 may store data used by the processor 200 in performing operations.
Optionally, the processor 200 is further configured to read the program in the memory 220, and perform the following steps:
and when the reselection triggering condition of the synchronous message sending carrier is met, reselecting one synchronous message sending carrier.
Optionally, the processor 200 is further configured to read the program in the memory 220, and perform the following steps:
and using the synchronization reference carrier selected from the available synchronization carrier set as the synchronization message sending carrier.
Optionally, the processor 200 is further configured to read the program in the memory 220, and perform the following steps:
randomly selecting one carrier from the available synchronization carrier set as the synchronization message transmission carrier.
Optionally, the processor 200 is further configured to read the program in the memory 220, and perform the following steps:
when different synchronous message sending bandwidths can be configured on different carriers, selecting a target carrier with the smallest synchronous message sending bandwidth from the available synchronous carrier set as the synchronous message sending carrier.
Optionally, the processor 200 is further configured to read the program in the memory 220, and perform the following steps:
when at least two target carriers exist in the available synchronization carrier set, selecting a target carrier with the minimum frequency from the at least two target carriers as the synchronization message sending carrier; or, randomly selecting one target carrier from the at least two target carriers as the synchronization message transmission carrier.
Optionally, the processor 200 is further configured to read the program in the memory 220, and perform the following steps:
and selecting the carrier with the minimum frequency from the available synchronization carrier set as the synchronization message sending carrier.
Optionally, the processor 200 is further configured to read the program in the memory 220, and perform the following steps:
sorting the second priorities of the carriers in the available set of synchronization carriers according to the first priority of the synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set;
determining N carriers with the highest second priority in the sorted carriers, wherein N is a positive integer;
and randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
Optionally, the processor 200 is further configured to read the program in the memory 220, and perform the following steps:
when the terminal cannot detect a GNSS synchronization signal of the global navigation satellite system, reselecting a synchronization message sending carrier;
or, when the terminal selects the synchronous reference carrier or reselects the synchronous reference carrier, reselecting a synchronous message sending carrier;
or, when the terminal determines the available synchronous carrier set again, reselects a synchronous message sending carrier;
or, when the value of a counter for counting the sending times of the synchronous messages is a preset value, reselecting a synchronous message sending carrier, wherein the counter is configured or preconfigured at the network side;
or, according to the first priority of the synchronization signal on each carrier, sorting the second priority of the carriers in the available synchronization carrier set; and if the second priority of the synchronous message sending carriers is ranked in the first N highest in the second priority, reselecting one synchronous message sending carrier, wherein the priority of each carrier refers to the highest priority of the synchronous signal of each carrier, the first priority is the highest priority of the synchronous signal on a single carrier, the second priority is the priority selected by the synchronous message sending carriers in the available synchronous carrier set, and N is a positive integer.
In some embodiments of the invention, there is also provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of:
selecting a synchronous message sending carrier from an available synchronous carrier set;
and sending the synchronization message on the selected synchronization message sending carrier.
When executed by the processor, the program can implement all implementation manners in the above-described method for selecting a synchronization message transmission carrier, and is not described herein again to avoid repetition.
As shown in fig. 3, an embodiment of the present invention further provides a terminal, including:
a selecting module 301, configured to select a synchronization message sending carrier from an available synchronization carrier set;
a sending module 302, configured to send a synchronization message on the selected synchronization message sending carrier.
The terminal of the embodiment of the invention further comprises:
and the reselection module is used for reselecting one synchronous message sending carrier when the reselection triggering condition of the synchronous message sending carrier is met.
In the terminal of the embodiment of the present invention, the selection module is configured to use a synchronization reference carrier selected from the available synchronization carrier set as the synchronization message transmission carrier.
In the terminal of the embodiment of the present invention, the selection module is configured to randomly select one carrier from the available synchronization carrier set as the synchronization message transmission carrier.
In the terminal of the embodiment of the present invention, the selection module is configured to select a target carrier with a minimum synchronization message transmission bandwidth as the synchronization message transmission carrier from the available synchronization carrier set when different synchronization message transmission bandwidths can be configured on different carriers.
In the terminal of the embodiment of the present invention, the selection module is configured to select a target carrier with a minimum frequency from the at least two target carriers as the synchronization message sending carrier when at least two target carriers exist in the available synchronization carrier set; or, randomly selecting one target carrier from the at least two target carriers as the synchronization message transmission carrier.
In the terminal of the embodiment of the present invention, the selection module is configured to select a carrier with the smallest frequency from the available synchronization carrier set as the synchronization message sending carrier.
In the terminal of the embodiment of the present invention, the selection module includes:
a sorting submodule, configured to sort second priorities of carriers in an available synchronization carrier set according to a first priority of a synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set;
the determining submodule is used for determining N carriers with the highest second priority in the sorted carriers, and N is a positive integer;
and the selection submodule is used for randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
In the terminal of the embodiment of the invention, the reselection module is used for reselecting a synchronous message sending carrier when the terminal cannot detect a GNSS synchronous signal of the global navigation satellite system;
or, when the terminal selects the synchronous reference carrier or reselects the synchronous reference carrier, reselecting a synchronous message sending carrier;
or, when the terminal determines the available synchronous carrier set again, reselects a synchronous message sending carrier;
or, when the value of a counter for counting the sending times of the synchronous messages is a preset value, reselecting a synchronous message sending carrier, wherein the counter is configured or preconfigured at the network side;
or, according to the first priority of the synchronization signal on each carrier, sorting the second priority of the carriers in the available synchronization carrier set; and if the second priority of the synchronous message sending carriers is ranked in the first N highest in the second priority, reselecting one synchronous message sending carrier, wherein the priority of each carrier refers to the highest priority of the synchronous signal of each carrier, the first priority is the highest priority of the synchronous signal on a single carrier, the second priority is the priority selected by the synchronous message sending carriers in the available synchronous carrier set, and N is a positive integer.
The terminal of the embodiment of the invention selects a synchronous message sending carrier from an available synchronous carrier set; and sending the synchronization message on the selected synchronization message sending carrier. In the embodiment of the invention, one carrier is selected as a synchronous message sending carrier according to different selection rules, rather than a synchronous reference carrier is selected as the synchronous message sending carrier, if the synchronous reference carrier exists, the synchronous reference carrier can be selected as the synchronous message sending carrier, and if the synchronous reference carrier does not exist, the synchronous reference carrier can be selected randomly, or the carrier with the minimum bandwidth or the minimum frequency can be selected as the synchronous message sending carrier, so that the problem that the UE cannot determine the carrier for sending the synchronous message when the UE is configured on the selected synchronous reference carrier to send the synchronous message is solved.
In various embodiments of the present invention, it should be understood that the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.

Claims (21)

1. A method for selecting a synchronization message transmission carrier is applied to a terminal, and is characterized by comprising the following steps:
selecting a synchronous message sending carrier from an available synchronous carrier set;
transmitting a synchronization message on the selected synchronization message transmission carrier;
the selecting one synchronization message transmission carrier from the available synchronization carrier set comprises:
sorting the second priorities of the carriers in the available set of synchronization carriers according to the first priority of the synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set;
determining N carriers with the highest second priority in the sorted carriers, wherein N is a positive integer;
and randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
2. The method of claim 1, wherein the step of transmitting the synchronization message on the selected synchronization message transmission carrier is followed by:
and when the reselection triggering condition of the synchronous message sending carrier is met, reselecting one synchronous message sending carrier.
3. The method of claim 1, wherein the selecting one synchronization message transmission carrier from the available set of synchronization carriers comprises:
and using the synchronization reference carrier selected from the available synchronization carrier set as the synchronization message sending carrier.
4. The method of claim 1, wherein the selecting one synchronization message transmission carrier from the available set of synchronization carriers comprises:
randomly selecting one carrier from the available synchronization carrier set as the synchronization message transmission carrier.
5. The method of claim 1, wherein the selecting one synchronization message transmission carrier from the available set of synchronization carriers comprises:
when different synchronous message sending bandwidths can be configured on different carriers, selecting a target carrier with the smallest synchronous message sending bandwidth from the available synchronous carrier set as the synchronous message sending carrier.
6. The method of claim 5, wherein the selecting a target carrier with a smallest synchronization message transmission bandwidth as the synchronization message transmission carrier from the available synchronization carrier set comprises:
when at least two target carriers exist in the available synchronization carrier set, selecting the target carrier with the minimum frequency from the at least two target carriers as the synchronization message sending carrier; or, randomly selecting one target carrier from at least two target carriers as the synchronous message sending carrier.
7. The method of claim 1, wherein the selecting one synchronization message transmission carrier from the available set of synchronization carriers comprises:
and selecting the carrier with the minimum frequency from the available synchronization carrier set as the synchronization message sending carrier.
8. The method for selecting a synchronization message transmission carrier according to claim 2, wherein the step of reselecting one synchronization message transmission carrier when a reselection trigger condition of the synchronization message transmission carrier is satisfied comprises:
when the terminal cannot detect a GNSS synchronization signal of the global navigation satellite system, reselecting a synchronization message sending carrier;
or, when the terminal selects the synchronous reference carrier or reselects the synchronous reference carrier, reselecting a synchronous message sending carrier;
or, when the terminal determines the available synchronous carrier set again, reselects a synchronous message sending carrier;
or, when the value of a counter for counting the sending times of the synchronous messages is a preset value, reselecting a synchronous message sending carrier, wherein the counter is configured or preconfigured at the network side;
or, according to the first priority of the synchronization signal on each carrier, sorting the second priority of the carriers in the available synchronization carrier set; and if the second priority of the synchronous message sending carriers is ranked in the first N highest in the second priority, reselecting one synchronous message sending carrier, wherein the priority of each carrier refers to the highest priority of the synchronous signal of each carrier, the first priority is the highest priority of the synchronous signal on a single carrier, the second priority is the priority selected by the synchronous message sending carriers in the available synchronous carrier set, and N is a positive integer.
9. A terminal supporting synchronization messaging carrier selection, comprising: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of:
selecting a synchronous message sending carrier from an available synchronous carrier set;
transmitting a synchronization message through the transceiver on the selected synchronization message transmission carrier;
the processor, when executing the program, may further implement the steps of:
sorting the second priorities of the carriers in the available set of synchronization carriers according to the first priority of the synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set;
determining N carriers with the highest second priority in the sorted carriers, wherein N is a positive integer;
and randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
10. The terminal of claim 9, wherein the processor, when executing the program, further performs the steps of:
and when the reselection triggering condition of the synchronous message sending carrier is met, reselecting one synchronous message sending carrier.
11. The terminal of claim 9, wherein the processor, when executing the program, further performs the steps of:
and using the synchronization reference carrier selected from the available synchronization carrier set as the synchronization message sending carrier.
12. The terminal of claim 9, wherein the processor, when executing the program, further performs the steps of:
randomly selecting one carrier from the available synchronization carrier set as the synchronization message transmission carrier.
13. The terminal of claim 9, wherein the processor, when executing the program, further performs the steps of:
when different synchronous message sending bandwidths can be configured on different carriers, selecting a target carrier with the smallest synchronous message sending bandwidth from the available synchronous carrier set as the synchronous message sending carrier.
14. The terminal of claim 13, wherein the processor, when executing the program, further performs the steps of:
when at least two target carriers exist in the available synchronization carrier set, selecting the target carrier with the minimum frequency from the at least two target carriers as the synchronization message sending carrier; or, randomly selecting one target carrier from at least two target carriers as the synchronous message sending carrier.
15. The terminal of claim 9, wherein the processor, when executing the program, further performs the steps of:
and selecting the carrier with the minimum frequency from the available synchronization carrier set as the synchronization message sending carrier.
16. The terminal of claim 10, wherein the processor, when executing the program, further performs the steps of:
when the terminal cannot detect a GNSS synchronization signal of the global navigation satellite system, reselecting a synchronization message sending carrier;
or, when the terminal selects the synchronous reference carrier or reselects the synchronous reference carrier, reselecting a synchronous message sending carrier;
or, when the terminal determines the available synchronous carrier set again, reselects a synchronous message sending carrier;
or, when the value of a counter for counting the sending times of the synchronous messages is a preset value, reselecting a synchronous message sending carrier, wherein the counter is configured or preconfigured at the network side;
or, according to the first priority of the synchronization signal on each carrier, sorting the second priority of the carriers in the available synchronization carrier set; and if the second priority of the synchronous message sending carriers is ranked in the first N highest in the second priority, reselecting one synchronous message sending carrier, wherein the priority of each carrier refers to the highest priority of the synchronous signal of each carrier, the first priority is the highest priority of the synchronous signal on a single carrier, the second priority is the priority selected by the synchronous message sending carriers in the available synchronous carrier set, and N is a positive integer.
17. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method for selecting a synchronization messaging carrier according to any one of claims 1 to 8.
18. A terminal that supports synchronization messaging carrier selection, comprising:
a selection module, configured to select a synchronization message sending carrier from an available synchronization carrier set;
a sending module, configured to send a synchronization message on the selected synchronization message sending carrier;
the selection module comprises:
a sorting submodule, configured to sort second priorities of carriers in an available synchronization carrier set according to a first priority of a synchronization signal on each carrier; the first priority is the highest priority of the synchronous signals on a single carrier, and the second priority is the priority selected by the synchronous message sending carrier in the available synchronous carrier set;
the determining submodule is used for determining N carriers with the highest second priority in the sorted carriers, and N is a positive integer;
and the selection submodule is used for randomly selecting one carrier as the synchronous message sending carrier from the rest carriers except the N carriers in the available synchronous carrier set.
19. The terminal of claim 18, further comprising:
and the reselection module is used for reselecting one synchronous message sending carrier when the reselection triggering condition of the synchronous message sending carrier is met.
20. The terminal of claim 18, wherein the selecting module is configured to use a synchronization reference carrier selected from the available synchronization carrier set as the synchronization message transmission carrier.
21. The terminal of claim 19, wherein the reselection module is configured to reselect a synchronization message transmission carrier when the terminal does not detect a GNSS synchronization signal;
or, when the terminal selects the synchronous reference carrier or reselects the synchronous reference carrier, reselecting a synchronous message sending carrier;
or, when the terminal determines the available synchronous carrier set again, the terminal reselects a synchronous message sending carrier;
or, when the value of a counter for counting the sending times of the synchronous messages is a preset value, reselecting a synchronous message sending carrier, wherein the counter is configured or preconfigured at the network side;
or, according to the first priority of the synchronization signal on each carrier, sorting the second priority of the carriers in the available synchronization carrier set; and if the second priority of the synchronous message sending carriers is ranked in the first N highest in the second priority, reselecting one synchronous message sending carrier, wherein the priority of each carrier refers to the highest priority of the synchronous signal of each carrier, the first priority is the highest priority of the synchronous signal on a single carrier, the second priority is the priority selected by the synchronous message sending carriers in the available synchronous carrier set, and N is a positive integer.
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