CN108737309B - Synchronization method and device applied to 5G system - Google Patents
Synchronization method and device applied to 5G system Download PDFInfo
- Publication number
- CN108737309B CN108737309B CN201710261223.7A CN201710261223A CN108737309B CN 108737309 B CN108737309 B CN 108737309B CN 201710261223 A CN201710261223 A CN 201710261223A CN 108737309 B CN108737309 B CN 108737309B
- Authority
- CN
- China
- Prior art keywords
- synchronization
- terminal
- interval
- network
- information
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2666—Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2669—Details of algorithms characterised by the domain of operation
- H04L27/2672—Frequency domain
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
Abstract
The invention provides a synchronization method and a device applied to a 5G system, wherein the method comprises the following steps: scheduling the terminal according to the bandwidth supported by the terminal, and determining the scheduled resource of the terminal; if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, determining a synchronization maintenance interval, so that the terminal jumps to the sending resources of the synchronization symbols in the synchronization maintenance interval to detect the synchronization symbols; wherein, in the synchronization maintaining interval, the network does not schedule the terminal; the embodiment of the invention introduces a synchronous maintaining interval; the network does not schedule the terminal in the synchronization keeping interval, and the terminal jumps to the sending resource of the synchronization symbol in the synchronization keeping interval to detect the synchronization symbol, thereby realizing synchronization by using the synchronization symbol.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a synchronization method and apparatus applied to a 5G system.
Background
In the current Long Term Evolution (LTE), a synchronous reference symbol occupies a fixed time-frequency resource for transmission, and a frequency domain resource is 72 subcarriers of a central frequency point; time domain resources TDD are slightly different from frequency domain resources FDD, for FDD, the secondary synchronization signal SSS is located at the penultimate symbol of # SF0 and # SF5, and the primary synchronization signal PSS is located at the last symbol of # SF0 and # SF 5. For TDD, the secondary synchronization signal SSS is located at the last symbol of # SF0 and # SF5, and the primary synchronization signal PSS is located at the third symbol of the special subframe. The terminal UE only needs to detect the synchronization symbol at the corresponding time-frequency position to obtain cell synchronization.
In LTE, the resource grid is 100KHz, and the terminal scans synchronization symbols every 100KHz to perform cell detection. The position of the synchronization symbol coincides with the center frequency point.
In 5G, the system bandwidth is large, the maximum system bandwidth cannot be less than 80MHz, and from the viewpoint of complexity and cost, it is likely that the bandwidth supported by the terminal is less than the network bandwidth. At present, how to transmit the synchronization symbol is not determined in standardization, but a resource grid (frequency point interval) and a frequency domain position for transmitting the synchronization symbol are in a relative relationship, which affects cell access and synchronization maintenance.
The following problems exist in the prior art for the 5G system:
1. if the sending interval of the synchronous symbol is the same as the interval of the central frequency point and the frequency domain sending position of the synchronous symbol is the same as the central frequency point of the cell, the central frequency point can be obtained through the resource position of the synchronous symbol. This situation illustrates that the synchronization symbols of a certain cell are only transmitted on a fixed one of the frequency domain resources of the system bandwidth, and if the frequency domain resource is not included in the resources where the terminal is scheduled, how the terminal continues to maintain synchronization becomes a problem.
2. If the synchronous symbol sending interval is different from the central frequency point interval, a plurality of synchronous symbol sending positions can exist in the system bandwidth, and how the terminal acquires the central frequency point of the system becomes a problem.
Disclosure of Invention
The invention aims to provide a synchronization method and a synchronization device applied to a 5G system, which solve the problems of cell access and synchronization maintenance caused by the relative relation between a resource grid (frequency point interval) and a frequency domain position transmitted by a synchronization symbol.
In order to achieve the above object, an embodiment of the present invention provides a synchronization method applied to a 5G system, which is applied to a network and includes:
scheduling the terminal according to the bandwidth supported by the terminal, and determining the scheduled resource of the terminal;
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, determining a synchronization maintenance interval, so that the terminal jumps to the sending resources of the synchronization symbols in the synchronization maintenance interval to detect the synchronization symbols; wherein the network does not schedule the terminal within the synchronization maintenance interval.
Wherein, if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, the step of determining a synchronization maintaining interval includes:
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, the network configures the information of the synchronization maintaining interval and sends the information of the synchronization maintaining interval to the terminal; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Wherein, if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, the step of determining a synchronization maintaining interval includes:
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, receiving the information of the synchronization maintaining interval reported by the terminal; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and determining the synchronous maintaining interval according to the synchronous maintaining interval information reported by the terminal.
Wherein, before scheduling the terminal according to the bandwidth supported by the terminal and determining the scheduled resource of the terminal, the method further includes:
receiving information of bandwidth supported by a terminal reported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal;
and determining the bandwidth supported by the terminal according to the bandwidth information supported by the terminal.
Wherein the method further comprises:
if the sending interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network, sending the position of the sending resource of the synchronous symbol to a terminal, so that the terminal determines the position of the central frequency point according to the position of the sending resource of the synchronous symbol of the network;
and if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network, sending a preset indication signaling to a terminal, so that the terminal can determine the position of the central frequency point according to the preset indication signaling.
The preset indication signaling carries the position of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
The embodiment of the invention also provides a synchronization method applied to a 5G system, which is applied to a terminal and comprises the following steps:
determining scheduled resources of a terminal;
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, determining a synchronization maintaining interval; wherein the network does not schedule the terminal within the synchronization maintenance interval;
and in the synchronization keeping interval, the terminal jumps to the sending resource of the synchronization symbol to detect the synchronization symbol and carries out synchronization according to the synchronization symbol.
Wherein, if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, the step of determining a synchronization maintaining interval includes:
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, receiving the information of the synchronization maintaining interval sent by the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Wherein, if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, the step of determining a synchronization maintaining interval includes:
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, the terminal configures the information of the synchronization maintaining interval and reports the information of the synchronization maintaining interval to the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Before determining the scheduled resources of the terminal, the method further includes:
reporting the information of the bandwidth supported by the terminal to a network, so that the network can determine the scheduled resource of the terminal according to the information of the bandwidth supported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal.
Wherein the method further comprises:
if the sending interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network, determining the position of the central frequency point according to the position of the sending resource of the synchronous symbol of the network;
and if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network, receiving a preset indication signaling sent by the network, and determining the position of the central frequency point according to the preset indication signaling.
The preset indication signaling carries the position of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
The embodiment of the invention also provides a synchronization device applied to a 5G system, which is applied to a network and comprises the following components:
the resource determining module is used for scheduling the terminal according to the bandwidth supported by the terminal and determining the scheduled resource of the terminal;
an interval determining module, configured to determine a synchronization maintaining interval if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, so that the terminal skips to the transmission resource of the synchronization symbol in the synchronization maintaining interval to detect the synchronization symbol; wherein the network does not schedule the terminal within the synchronization maintenance interval.
Wherein the interval determination module comprises:
the interval configuration submodule is used for configuring the information of the synchronization maintaining interval by the network and sending the information of the synchronization maintaining interval to the terminal if the scheduled resources of the terminal do not comprise the sending resources of the synchronization symbols of the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the first interval determining submodule is used for determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Wherein the interval determination module comprises:
an interval reporting sub-module, configured to receive synchronization maintaining interval information reported by the terminal if a scheduled resource of the terminal does not include a transmission resource of a synchronization symbol of a network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the second interval determining submodule is used for determining the synchronous maintaining interval according to the synchronous maintaining interval information reported by the terminal.
Wherein the apparatus further comprises:
the information receiving module is used for receiving the information of the bandwidth supported by the terminal reported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal;
and the bandwidth determining module is used for determining the bandwidth supported by the terminal according to the bandwidth information supported by the terminal.
Wherein the apparatus further comprises:
the first sending module is used for sending the position of the sending resource of the synchronous symbol to the terminal if the sending interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network, so that the terminal determines the position of the central frequency point according to the position of the sending resource of the synchronous symbol of the network;
and the second sending module is used for sending a preset indication signaling to the terminal if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network, so that the terminal can determine the position of the central frequency point according to the preset indication signaling.
The preset indication signaling carries the position of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
The embodiment of the invention also provides a synchronization device applied to a 5G system, which is applied to a terminal and comprises the following components:
a resource determining module, configured to determine a scheduled resource of a terminal;
a determining module, configured to determine a synchronization maintaining interval if the scheduled resource of the terminal does not include a transmission resource of a synchronization symbol of a network; wherein the network does not schedule the terminal within the synchronization maintenance interval;
and the synchronization module is used for skipping to the sending resource of the synchronization symbol by the terminal within the synchronization keeping interval to detect the synchronization symbol and synchronizing according to the synchronization symbol.
Wherein the determining module comprises:
a receiving submodule, configured to receive information of the synchronization maintaining interval sent by the network if a resource scheduled by the terminal does not include a resource for sending a synchronization symbol of the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the first determining submodule is used for determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Wherein the determining module comprises:
a reporting sub-module, configured to configure the information of the synchronization maintaining interval and report the information of the synchronization maintaining interval to the network, if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the second determining submodule is used for determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Wherein the apparatus further comprises:
an information reporting module, configured to report information of a bandwidth supported by the terminal to a network, so that the network can determine a resource scheduled by the terminal according to the information of the bandwidth supported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal.
Wherein the apparatus further comprises:
the first position determining module is used for determining the position of the central frequency point according to the position of the transmitting resource of the synchronous symbol of the network if the transmitting interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network;
and the second position determining module is used for receiving a preset indication signaling sent by the network and determining the position of the central frequency point according to the preset indication signaling if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network.
The preset indication signaling carries the position of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
The technical scheme of the invention at least has the following beneficial effects:
the synchronization method and the synchronization device applied to the 5G system of the embodiment of the invention introduce a synchronization maintaining interval when the scheduled resources of the terminal do not comprise the sending resources of the synchronization symbols of the network; the network does not schedule the terminal in the synchronization keeping interval, and the terminal jumps to the sending resource of the synchronization symbol in the synchronization keeping interval to detect the synchronization symbol, thereby realizing synchronization by using the synchronization symbol.
Drawings
Fig. 1 is a flowchart illustrating steps of a synchronization method applied to a 5G system on a network side according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a preset indication signaling sent by a network side in the embodiment of the present invention;
fig. 3 is a flowchart illustrating steps of a synchronization method applied to a 5G system at a terminal side according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a synchronization apparatus applied to a 5G system on a network side according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a synchronization apparatus applied to a 5G system at a terminal side according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, an embodiment of the present invention further provides a synchronization method applied to a 5G system, which is applied to a network and includes:
If the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, the embodiment of the invention introduces a synchronization maintenance interval; the network does not schedule the terminal in the synchronization keeping interval, and the terminal jumps to the sending resource of the synchronization symbol in the synchronization keeping interval to detect the synchronization symbol, thereby realizing synchronization by using the synchronization symbol.
Specifically, step 12 in the above embodiment of the present invention includes:
step 121, if the scheduled resource of the terminal does not include the sending resource of the synchronization symbol of the network, the network configures the information of the synchronization maintaining interval and sends the information of the synchronization maintaining interval to the terminal; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval; and determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Alternatively, step 12 comprises:
step 122, if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, receiving the synchronization maintaining interval information reported by the terminal; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval; and determining the synchronous maintaining interval according to the synchronous maintaining interval information reported by the terminal.
In the embodiment of the present invention, the synchronization maintaining interval may be configured by the network and sent to the terminal, and the terminal synchronizes the synchronization symbol in the synchronization maintaining interval; or, the synchronization maintaining interval may also be a synchronization maintaining interval to be used by the terminal when the terminal determines that the synchronization maintaining interval needs to be introduced, and the terminal configures the synchronization maintaining interval to be used and reports the synchronization maintaining interval to the network, and the network does not schedule the terminal in the synchronization maintaining interval.
Further, in the foregoing embodiment of the present invention, before step 11, the method further includes:
receiving information of bandwidth supported by a terminal reported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal;
and determining the bandwidth supported by the terminal according to the bandwidth information supported by the terminal.
The terminal in the embodiment of the invention can autonomously report the bandwidth supported by the terminal, so that the network can schedule according to the bandwidth capability supported by the terminal, and the scheduled resource cannot exceed the bandwidth range supported by the terminal.
Further, the method in the above embodiment of the present invention further includes:
step 13, if the sending interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network, sending the position of the sending resource of the synchronous symbol to the terminal, so that the terminal determines the position of the central frequency point according to the position of the sending resource of the synchronous symbol of the network;
step 14, if the sending interval of the synchronization symbol of the network is different from the frequency point interval of the central frequency point of the network, sending a preset indication signaling to a terminal, so that the terminal can determine the position of the central frequency point according to the preset indication signaling; the preset indication signaling carries the position of a central frequency point of a network; or, the preset indication signaling carries the position of the transmission resource of any one synchronization symbol and an offset value between the position of the transmission resource of the synchronization symbol and the position of the central frequency point.
In the above embodiment of the present invention, if the transmission interval of the synchronization symbol of the network is different from the frequency point interval of the central frequency point of the network, the terminal cannot determine the position of the central frequency point of the network according to the position of the transmission resource of the synchronization symbol.
The method specifically comprises the following steps: the network directly carries the position of the central frequency point of the network in the preset indication signaling, and the terminal can directly analyze the position of the central frequency point from the preset indication signaling; alternatively, as shown in fig. 2, the method specifically includes: the network carries the position of the transmission resource of a certain synchronization symbol (for example, the position of the transmission resource of the synchronization symbol of Index 0) in the preset indication signaling and the offset value between the position of the transmission resource of the synchronization symbol and the position of the central frequency point, so that the terminal can determine the position of the central frequency point according to the content carried by the preset indication signaling.
As shown in fig. 3, an embodiment of the present invention further provides a synchronization method applied to a 5G system, which is applied to a terminal, and includes:
and step 33, in the synchronization maintaining interval, the terminal jumps to the sending resource of the synchronization symbol to detect the synchronization symbol, and performs synchronization according to the synchronization symbol.
If the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, the embodiment of the invention introduces a synchronization maintenance interval; the network does not schedule the terminal in the synchronization keeping interval, and the terminal jumps to the sending resource of the synchronization symbol in the synchronization keeping interval to detect the synchronization symbol, thereby realizing synchronization by using the synchronization symbol.
Specifically, step 32 in the above embodiment of the present invention includes:
step 321, if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, receiving the information of the synchronization maintaining interval sent by the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval; and determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Alternatively, step 32 comprises:
step 322, if the scheduled resource of the terminal does not include the sending resource of the synchronization symbol of the network, the terminal configures the information of the synchronization maintaining interval and reports the information of the synchronization maintaining interval to the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval; and determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
In the embodiment of the present invention, the synchronization maintaining interval may be configured by the network and sent to the terminal, and the terminal synchronizes the synchronization symbol in the synchronization maintaining interval; or, the synchronization maintaining interval may also be a synchronization maintaining interval to be used by the terminal when the terminal determines that the synchronization maintaining interval needs to be introduced, and the terminal configures the synchronization maintaining interval to be used and reports the synchronization maintaining interval to the network, and the network does not schedule the terminal in the synchronization maintaining interval.
Further, in the foregoing embodiment of the present invention, before step 31, the method further includes:
reporting the information of the bandwidth supported by the terminal to a network, so that the network can determine the scheduled resource of the terminal according to the information of the bandwidth supported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal.
The terminal in the embodiment of the invention can autonomously report the bandwidth supported by the terminal, so that the network can schedule according to the bandwidth capability supported by the terminal, and the scheduled resource cannot exceed the bandwidth range supported by the terminal.
Further, the method in the above embodiment of the present invention further includes:
step 34, if the sending interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network, determining the position of the central frequency point according to the position of the sending resource of the synchronous symbol of the network;
step 35, if the sending interval of the synchronization symbol of the network is different from the frequency point interval of the central frequency point of the network, receiving a preset indication signaling sent by the network, and determining the position of the central frequency point according to the preset indication signaling; the preset indication signaling carries the position of a central frequency point of a network; or, the preset indication signaling carries the position of the transmission resource of any one synchronization symbol and an offset value between the position of the transmission resource of the synchronization symbol and the position of the central frequency point.
In the above embodiment of the present invention, if the transmission interval of the synchronization symbol of the network is different from the frequency point interval of the central frequency point of the network, the terminal cannot determine the position of the central frequency point of the network according to the position of the transmission resource of the synchronization symbol.
The method specifically comprises the following steps: the network directly carries the position of the central frequency point of the network in the preset indication signaling, and the terminal can directly analyze the position of the central frequency point from the preset indication signaling; alternatively, as shown in fig. 2, the method specifically includes: the network carries the position of the transmission resource of a certain synchronization symbol (for example, the position of the transmission resource of the synchronization symbol of Index 0) in the preset indication signaling and the offset value between the position of the transmission resource of the synchronization symbol and the position of the central frequency point, so that the terminal can determine the position of the central frequency point according to the content carried by the preset indication signaling.
In summary, the above embodiments of the present invention introduce a synchronization maintaining interval; the network does not schedule the terminal in the synchronization keeping interval, and the terminal jumps to the sending resource of the synchronization symbol in the synchronization keeping interval to detect the synchronization symbol, thereby realizing synchronization by using the synchronization symbol.
As shown in fig. 4, an embodiment of the present invention further provides a synchronization apparatus applied to a 5G system, which is applied to a network, and includes:
a resource determining module 41, configured to schedule the terminal according to a bandwidth supported by the terminal, and determine a scheduled resource of the terminal;
an interval determining module 42, configured to determine a synchronization maintaining interval if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, so that the terminal jumps to the transmission resource of the synchronization symbol in the synchronization maintaining interval to detect the synchronization symbol; wherein the network does not schedule the terminal within the synchronization maintenance interval.
Specifically, the interval determining module in the above embodiment of the present invention includes:
the interval configuration submodule is used for configuring the information of the synchronization maintaining interval by the network and sending the information of the synchronization maintaining interval to the terminal if the scheduled resources of the terminal do not comprise the sending resources of the synchronization symbols of the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the first interval determining submodule is used for determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Specifically, the interval determining module in the above embodiment of the present invention includes:
an interval reporting sub-module, configured to receive synchronization maintaining interval information reported by the terminal if a scheduled resource of the terminal does not include a transmission resource of a synchronization symbol of a network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the second interval determining submodule is used for determining the synchronous maintaining interval according to the synchronous maintaining interval information reported by the terminal.
Specifically, the apparatus in the above embodiment of the present invention further includes:
the information receiving module is used for receiving the information of the bandwidth supported by the terminal reported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal;
and the bandwidth determining module is used for determining the bandwidth supported by the terminal according to the bandwidth information supported by the terminal.
Specifically, the apparatus in the above embodiment of the present invention further includes:
the first sending module is used for sending the position of the sending resource of the synchronous symbol to the terminal if the sending interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network, so that the terminal determines the position of the central frequency point according to the position of the sending resource of the synchronous symbol of the network;
and the second sending module is used for sending a preset indication signaling to the terminal if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network, so that the terminal can determine the position of the central frequency point according to the preset indication signaling.
Specifically, in the above embodiment of the present invention, the preset indication signaling carries a position of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
It should be noted that, the synchronization apparatus applied to the 5G system on the network side provided in the above embodiments of the present invention is a synchronization apparatus capable of executing the synchronization method on the network side, and all embodiments of the synchronization method are applicable to the synchronization apparatus and can achieve the same or similar beneficial effects.
As shown in fig. 5, an embodiment of the present invention further provides a synchronization apparatus applied to a 5G system, which is applied to a terminal, and includes:
a resource determining module 51, configured to determine a scheduled resource of a terminal;
a determining module 52, configured to determine a synchronization maintaining interval if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network; wherein the network does not schedule the terminal within the synchronization maintenance interval;
and a synchronization module 53, configured to skip to the sending resource of the synchronization symbol to detect the synchronization symbol within the synchronization maintaining interval, and perform synchronization according to the synchronization symbol.
Specifically, the determining module in the above embodiment of the present invention includes:
a receiving submodule, configured to receive information of the synchronization maintaining interval sent by the network if a resource scheduled by the terminal does not include a resource for sending a synchronization symbol of the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the first determining submodule is used for determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Specifically, the determining module in the above embodiment of the present invention includes:
a reporting sub-module, configured to configure the information of the synchronization maintaining interval and report the information of the synchronization maintaining interval to the network, if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the second determining submodule is used for determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
Specifically, the apparatus in the above embodiment of the present invention further includes:
an information reporting module, configured to report information of a bandwidth supported by the terminal to a network, so that the network can determine a resource scheduled by the terminal according to the information of the bandwidth supported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal.
Specifically, the apparatus in the above embodiment of the present invention further includes:
the first position determining module is used for determining the position of the central frequency point according to the position of the transmitting resource of the synchronous symbol of the network if the transmitting interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network;
and the second position determining module is used for receiving a preset indication signaling sent by the network and determining the position of the central frequency point according to the preset indication signaling if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network.
Specifically, in the above embodiment of the present invention, the preset indication signaling carries a position of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
It should be noted that the synchronization apparatus applied to the 5G system at the terminal side provided by the above embodiments of the present invention is a synchronization apparatus capable of executing the synchronization method at the terminal side, and all embodiments of the synchronization method are applicable to the synchronization apparatus and can achieve the same or similar beneficial effects.
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 (22)
1. A synchronization method applied to a 5G system is applied to a network, and is characterized by comprising the following steps:
scheduling the terminal according to the bandwidth supported by the terminal, and determining the scheduled resource of the terminal;
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, determining a synchronization maintenance interval, so that the terminal jumps to the sending resources of the synchronization symbols in the synchronization maintenance interval to detect the synchronization symbols; wherein the network does not schedule the terminal within the synchronization maintenance interval.
2. The method according to claim 1, wherein the step of determining a synchronization holding interval if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network comprises:
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, the network configures the information of the synchronization maintaining interval and sends the information of the synchronization maintaining interval to the terminal; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
3. The method according to claim 1, wherein the step of determining a synchronization holding interval if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network comprises:
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, receiving the information of the synchronization maintaining interval reported by the terminal; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and determining the synchronous maintaining interval according to the synchronous maintaining interval information reported by the terminal.
4. The method of claim 1, wherein before the terminal is scheduled according to the bandwidth supported by the terminal and the scheduled resource of the terminal is determined, the method further comprises:
receiving information of bandwidth supported by a terminal reported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal;
and determining the bandwidth supported by the terminal according to the bandwidth information supported by the terminal.
5. The method of claim 1, further comprising:
if the sending interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network, sending the position of the sending resource of the synchronous symbol to a terminal, so that the terminal determines the position of the central frequency point according to the position of the sending resource of the synchronous symbol of the network;
and if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network, sending a preset indication signaling to a terminal, so that the terminal can determine the position of the central frequency point according to the preset indication signaling.
6. The method according to claim 5, wherein the preset indication signaling carries a location of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
7. A synchronization method applied to a 5G system is applied to a terminal, and is characterized by comprising the following steps:
reporting the information of the bandwidth supported by the terminal to a network, so that the network can determine the scheduled resource of the terminal according to the information of the bandwidth supported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal;
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, determining a synchronization maintaining interval; wherein the network does not schedule the terminal within the synchronization maintenance interval;
and in the synchronization keeping interval, the terminal jumps to the sending resource of the synchronization symbol to detect the synchronization symbol and carries out synchronization according to the synchronization symbol.
8. The method of claim 7, wherein if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, the step of determining a synchronization holding interval comprises:
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, receiving the information of the synchronization maintaining interval sent by the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
9. The method according to claim 7, wherein the step of determining a synchronization maintenance interval if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network comprises:
if the scheduled resources of the terminal do not include the sending resources of the synchronization symbols of the network, the terminal configures the information of the synchronization maintaining interval and reports the information of the synchronization maintaining interval to the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
10. The method of claim 7, further comprising:
if the sending interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network, determining the position of the central frequency point according to the position of the sending resource of the synchronous symbol of the network;
and if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network, receiving a preset indication signaling sent by the network, and determining the position of the central frequency point according to the preset indication signaling.
11. The method according to claim 10, wherein the preset indication signaling carries a location of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
12. A synchronization device applied to a 5G system, applied to a network, is characterized by comprising:
the resource determining module is used for scheduling the terminal according to the bandwidth supported by the terminal and determining the scheduled resource of the terminal;
an interval determining module, configured to determine a synchronization maintaining interval if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network, so that the terminal skips to the transmission resource of the synchronization symbol in the synchronization maintaining interval to detect the synchronization symbol; wherein the network does not schedule the terminal within the synchronization maintenance interval.
13. The apparatus of claim 12, wherein the interval determining module comprises:
the interval configuration submodule is used for configuring the information of the synchronization maintaining interval by the network and sending the information of the synchronization maintaining interval to the terminal if the scheduled resources of the terminal do not comprise the sending resources of the synchronization symbols of the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the first interval determining submodule is used for determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
14. The apparatus of claim 12, wherein the interval determining module comprises:
an interval reporting sub-module, configured to receive synchronization maintaining interval information reported by the terminal if a scheduled resource of the terminal does not include a transmission resource of a synchronization symbol of a network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the second interval determining submodule is used for determining the synchronous maintaining interval according to the synchronous maintaining interval information reported by the terminal.
15. The apparatus of claim 12, further comprising:
the information receiving module is used for receiving the information of the bandwidth supported by the terminal reported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal;
and the bandwidth determining module is used for determining the bandwidth supported by the terminal according to the bandwidth information supported by the terminal.
16. The apparatus of claim 12, further comprising:
the first sending module is used for sending the position of the sending resource of the synchronous symbol to the terminal if the sending interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network, so that the terminal determines the position of the central frequency point according to the position of the sending resource of the synchronous symbol of the network;
and the second sending module is used for sending a preset indication signaling to the terminal if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network, so that the terminal can determine the position of the central frequency point according to the preset indication signaling.
17. The apparatus of claim 16, wherein the preset indication signaling carries a location of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
18. A synchronization device applied to a 5G system is applied to a terminal and is characterized by comprising:
an information reporting module, configured to report information of a bandwidth supported by the terminal to a network, so that the network can determine a resource scheduled by the terminal according to the information of the bandwidth supported by the terminal; wherein the information of the bandwidth supported by the terminal includes: a starting position of a bandwidth supported by the terminal and a length of the bandwidth supported by the terminal;
a determining module, configured to determine a synchronization maintaining interval if the scheduled resource of the terminal does not include a transmission resource of a synchronization symbol of a network; wherein the network does not schedule the terminal within the synchronization maintenance interval;
and the synchronization module is used for skipping to the sending resource of the synchronization symbol by the terminal within the synchronization keeping interval to detect the synchronization symbol and synchronizing according to the synchronization symbol.
19. The apparatus of claim 18, wherein the determining module comprises:
a receiving submodule, configured to receive information of the synchronization maintaining interval sent by the network if a resource scheduled by the terminal does not include a resource for sending a synchronization symbol of the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the first determining submodule is used for determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
20. The apparatus of claim 18, wherein the determining module comprises:
a reporting sub-module, configured to configure the information of the synchronization maintaining interval and report the information of the synchronization maintaining interval to the network, if the scheduled resource of the terminal does not include the transmission resource of the synchronization symbol of the network; wherein the information of the synchronization maintaining interval comprises a period of the synchronization maintaining interval and a duration of the synchronization maintaining interval;
and the second determining submodule is used for determining the synchronization maintaining interval according to the information of the synchronization maintaining interval.
21. The apparatus of claim 18, further comprising:
the first position determining module is used for determining the position of the central frequency point according to the position of the transmitting resource of the synchronous symbol of the network if the transmitting interval of the synchronous symbol of the network is the same as the frequency point interval of the central frequency point of the network;
and the second position determining module is used for receiving a preset indication signaling sent by the network and determining the position of the central frequency point according to the preset indication signaling if the sending interval of the synchronous symbol of the network is different from the frequency point interval of the central frequency point of the network.
22. The apparatus of claim 21, wherein the preset indication signaling carries a location of a central frequency point of a network; alternatively, the first and second electrodes may be,
the preset indication signaling carries the position of the sending resource of any one synchronization symbol and the offset value between the position of the sending resource of the synchronization symbol and the position of the central frequency point.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710261223.7A CN108737309B (en) | 2017-04-20 | 2017-04-20 | Synchronization method and device applied to 5G system |
PCT/CN2018/078965 WO2018192327A1 (en) | 2017-04-20 | 2018-03-14 | Synchronization method and device applied to 5g system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710261223.7A CN108737309B (en) | 2017-04-20 | 2017-04-20 | Synchronization method and device applied to 5G system |
Publications (2)
Publication Number | Publication Date |
---|---|
CN108737309A CN108737309A (en) | 2018-11-02 |
CN108737309B true CN108737309B (en) | 2020-10-16 |
Family
ID=63855538
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710261223.7A Active CN108737309B (en) | 2017-04-20 | 2017-04-20 | Synchronization method and device applied to 5G system |
Country Status (2)
Country | Link |
---|---|
CN (1) | CN108737309B (en) |
WO (1) | WO2018192327A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101350665A (en) * | 2008-08-25 | 2009-01-21 | 中兴通讯股份有限公司 | Method for synchronizing terminal of great bandwidth radio communication system and method for framing |
WO2013049520A1 (en) * | 2011-09-30 | 2013-04-04 | Qualcomm Incorporated | Random access channel design for narrow bandwidth operation in a wide bandwidth system |
CN103379072A (en) * | 2012-04-20 | 2013-10-30 | 电信科学技术研究院 | Signal transmission method and device |
CN104796367A (en) * | 2014-01-16 | 2015-07-22 | 电信科学技术研究院 | Synchronization information sending method, synchronization information detection method and user equipment |
CN105207755A (en) * | 2014-06-09 | 2015-12-30 | 中国移动通信集团公司 | Air interface synchronization method, base station, and system |
CN106161317A (en) * | 2015-04-08 | 2016-11-23 | 中国移动通信集团公司 | A kind of synchronous method and device |
CN106455040A (en) * | 2016-11-30 | 2017-02-22 | 宇龙计算机通信科技(深圳)有限公司 | Information transmission method, base station and terminal |
-
2017
- 2017-04-20 CN CN201710261223.7A patent/CN108737309B/en active Active
-
2018
- 2018-03-14 WO PCT/CN2018/078965 patent/WO2018192327A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101350665A (en) * | 2008-08-25 | 2009-01-21 | 中兴通讯股份有限公司 | Method for synchronizing terminal of great bandwidth radio communication system and method for framing |
WO2013049520A1 (en) * | 2011-09-30 | 2013-04-04 | Qualcomm Incorporated | Random access channel design for narrow bandwidth operation in a wide bandwidth system |
CN103379072A (en) * | 2012-04-20 | 2013-10-30 | 电信科学技术研究院 | Signal transmission method and device |
CN104796367A (en) * | 2014-01-16 | 2015-07-22 | 电信科学技术研究院 | Synchronization information sending method, synchronization information detection method and user equipment |
CN105207755A (en) * | 2014-06-09 | 2015-12-30 | 中国移动通信集团公司 | Air interface synchronization method, base station, and system |
CN106161317A (en) * | 2015-04-08 | 2016-11-23 | 中国移动通信集团公司 | A kind of synchronous method and device |
CN106455040A (en) * | 2016-11-30 | 2017-02-22 | 宇龙计算机通信科技(深圳)有限公司 | Information transmission method, base station and terminal |
Non-Patent Citations (2)
Title |
---|
Carrier raster and synchronization signal transmission;Samsung;《3GPP TSG RAN WG1 Meeting #87》;20161118;全文 * |
Network Synchronization for NR;Huawei 等;《3GPP TSG RAN WG1 Meeting #87》;20161118;全文 * |
Also Published As
Publication number | Publication date |
---|---|
CN108737309A (en) | 2018-11-02 |
WO2018192327A1 (en) | 2018-10-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10959230B2 (en) | Subframe processing method and device | |
EP3026857B1 (en) | Method for transmitting system information, system and device | |
CN110740050B (en) | Method for measurement configuration, user equipment, network device, and storage medium | |
CN112073167B (en) | Transmission method, receiving method, base station and user equipment of synchronous signal block | |
CN108631969B (en) | Indication information sending method, indication information receiving method, base station and terminal | |
CN109391452B (en) | Method for allocating and acquiring idle state CORESET, base station, user equipment and readable medium | |
CN104956728A (en) | Discovery signal transmission/reception method and apparatus for use in mobile communication system | |
CN108260158B (en) | Pilot frequency measurement method and device | |
CN109891940B (en) | Implementing multiple parameter sets in a network | |
US10375717B2 (en) | User equipment and data transmission method thereof | |
CN113692000B (en) | Method, terminal and storage medium for receiving common control message | |
RU2665879C1 (en) | Method and device for transmitting control information | |
CN110971377B (en) | Data transmission method and device | |
CN112564868B (en) | Signal sending and receiving method and terminal | |
CN111182638B (en) | User equipment, network side equipment and control method of user equipment | |
CN110830206B (en) | PDCCH (physical Downlink control channel) determination and synchronization signal detection and transmission methods and devices, storage medium, terminal and base station | |
EP3404978B1 (en) | Data transmission methods and related wireless network devices | |
CN102111851A (en) | Method for realizing downlink control signaling transmission and system thereof | |
CN109391415B (en) | Method and device for configuring synchronization signal block in RMSI, storage medium, base station and user equipment | |
CN111405662A (en) | Data transmission method, network side equipment and user equipment | |
CN106817774B (en) | Scheduling of user terminals method and device | |
CN105472712A (en) | Data transmission method, device and system | |
CN111031579B (en) | Bandwidth segmentation configuration method, network equipment and terminal | |
WO2021088748A1 (en) | Methods for sending and receiving information, apparatus, and terminal | |
EP2921020A1 (en) | Methods and apparatuses for enabling cell activation in a network |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |