CN112351484A - Downlink synchronization method, network side equipment and mobile terminal - Google Patents
Downlink synchronization method, network side equipment and mobile terminal Download PDFInfo
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- CN112351484A CN112351484A CN201910730263.0A CN201910730263A CN112351484A CN 112351484 A CN112351484 A CN 112351484A CN 201910730263 A CN201910730263 A CN 201910730263A CN 112351484 A CN112351484 A CN 112351484A
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Abstract
The embodiment of the invention provides a downlink synchronization method, network side equipment and a mobile terminal. The method comprises the following steps: acquiring an RRC reconfiguration message, wherein the RRC reconfiguration message carries a period for using a synchronous sub-band; and sending an RRC reconfiguration message to the mobile terminal, so that the mobile terminal performs downlink synchronization on one of the multiple sub-bands supported by the mobile terminal by using the synchronous sub-band according to the period of using the synchronous sub-band, and continues to perform service transmission as a service sub-band after the downlink synchronization is completed. According to the method, the network side device and the mobile terminal provided by the embodiment of the invention, the period of using the synchronous sub-band is added in the RRC reconfiguration message and is sent to the mobile terminal, so that the mobile terminal does not need to use one sub-band of a plurality of sub-bands supported by the mobile terminal for downlink synchronization for a long time, the plurality of sub-bands can be fully utilized to carry out service transmission with the network side device, and the service transmission rate and the frequency spectrum resource utilization rate are high.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a downlink synchronization method, a network side device, and a mobile terminal.
Background
The TD-LTE230 power consumption information acquisition system is a wireless communication system which is based on a Time Division-Long Term Evolution (TD-LTE) technology, combines advanced technologies such as spectrum sensing, carrier aggregation, interference demodulation and software radio, uses a plurality of sub-bands in a 230MHz frequency band in the power industry, and is innovated, researched and developed and deeply customized. The 230MHz frequency band refers to a frequency band with the frequency of 223.025-235.000MHz, the frequency band is divided into 480 sub-bands, and the bandwidth of each sub-band is 25 kHz.
According to different capabilities of the mobile terminal UE, the UE can be divided into single sub-band UE and multi-sub-band UE. In the TD-LTE230 power consumption information acquisition system, for a multi-subband UE, a base station eNB may configure multiple subbands for the UE, so that the UE and the eNB perform data transmission through the multiple subbands. For convenience of description, the plurality of subbands configured by the eNB for the UE are referred to as a plurality of subbands supported by the UE.
Data transmitted between the UE and the eNB may be services, such as voice services, video services, and the like, and in order to ensure quality of service transmission, the UE needs to maintain downlink synchronization with the eNB during the service transmission. In the prior art, a UE uses one sub-band (target sub-band) of multiple sub-bands supported by the UE for downlink synchronization for a long time, and at this time, the remaining sub-bands of the multiple sub-bands are default to be service sub-bands. It should be noted that each cell corresponds to one synchronization subband, and the UE in the cell uses the target subband for downlink synchronization for a long time, specifically, the UE reads the PSS and SSS sequences of the synchronization subband by using the target subband, and then performs downlink synchronization with the eNB through the synchronization subband. The service sub-band is a sub-band for transmitting services, and the UE can receive or send services through the service sub-band, and further perform service transmission with the eNB.
In the process of service transmission, the UE needs to use one sub-band of multiple sub-bands (for example, N is an integer greater than 1) supported by the UE for downlink synchronization for a long time, and only uses the remaining N-1 sub-bands to perform service transmission with the eNB, so that the service transmission rate is low and the spectrum resource utilization rate is low.
Disclosure of Invention
The embodiment of the invention provides a downlink synchronization method, network side equipment and a mobile terminal, which are used for solving the problems of low transmission rate and low utilization rate of frequency spectrum resources of the existing multi-sub-band UE service.
In a first aspect, an embodiment of the present invention provides a downlink synchronization method, including:
acquiring an RRC reconfiguration message, wherein the RRC reconfiguration message carries a period for using a synchronous sub-band;
and sending the RRC reconfiguration message to a mobile terminal, so that the mobile terminal performs downlink synchronization on one of a plurality of sub-bands supported by the mobile terminal according to the period of using the synchronous sub-band, and performs service transmission by using the sub-band using the synchronous sub-band as a service sub-band after the downlink synchronization is completed.
Further, acquiring the RRC reconfiguration message, previously including:
and determining the period of using the synchronous sub-band according to the capability of the mobile terminal.
Further, the unit of the period using the synchronization subband is a radio frame, and the period using the synchronization subband is 1, 64, 128, 256, 512 or 1024.
In a second aspect, an embodiment of the present invention provides a downlink synchronization method, including:
receiving an RRC reconfiguration message sent by a network side device, wherein the RRC reconfiguration message carries a period for using a synchronous sub-band;
and according to the period using the synchronous sub-band, performing downlink synchronization on one of the sub-bands supported by the user by using the synchronous sub-band, and performing service transmission by using the sub-band as a service sub-band after the downlink synchronization is completed.
Further, according to the cycle using the synchronization sub-band, performing downlink synchronization on one of the sub-bands supported by the user using the synchronization sub-band, including:
determining a starting frame using the synchronous sub-band according to the period using the synchronous sub-band;
and when the currently transmitted wireless frame number accords with the initial frame of the used synchronous sub-band, one of the sub-bands supported by the user uses the synchronous sub-band to carry out downlink synchronization.
Further, according to the period using the synchronization sub-band, a calculation formula for determining a start frame using the synchronization sub-band is as follows:
Nf mod syncPeriod＝0；
where Nf is the currently transmitted radio frame number, syncPeriod is the value of the period using the synchronization subband, and mod is the remainder function.
In a third aspect, an embodiment of the present invention provides a network side device, including:
an obtaining module, configured to obtain an RRC reconfiguration message, where the RRC reconfiguration message carries a cycle of using a synchronization subband;
and the sending module is used for sending the RRC reconfiguration message to the mobile terminal so that the mobile terminal can perform downlink synchronization on one of the multiple sub-bands supported by the mobile terminal according to the period of using the synchronous sub-band, and after the downlink synchronization is completed, the sub-band using the synchronous sub-band is used as a service sub-band for service transmission.
In a fourth aspect, an embodiment of the present invention provides a mobile terminal, including:
a receiving module, configured to receive an RRC reconfiguration message sent by a network side device, where the RRC reconfiguration message carries a cycle of using a synchronization subband;
and the downlink synchronization module is used for performing downlink synchronization on one synchronous sub-band in the plurality of sub-bands supported by the downlink synchronization module according to the period of using the synchronous sub-band, and performing service transmission by using the sub-band using the synchronous sub-band as a service sub-band after the downlink synchronization is completed.
In a fifth aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method according to the first aspect or the second aspect when executing the program.
In a sixth aspect, embodiments of the present invention provide a non-transitory computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the steps of the method as provided in the first or second aspect.
According to the downlink synchronization method, the network side device and the mobile terminal provided by the embodiment of the invention, the period of using the synchronous sub-band is added in the RRC reconfiguration message through the network side device, and the RRC reconfiguration message carrying the period of using the synchronous sub-band is sent to the mobile terminal, so that after the mobile terminal receives the RRC reconfiguration message sent by the network side device, one of the plurality of sub-bands supported by the mobile terminal is subjected to downlink synchronization by using the synchronous sub-band according to the period of using the synchronous sub-band carried in the RRC reconfiguration message, and after the downlink synchronization is completed, the sub-band is continuously used for service transmission. One sub-band in a plurality of sub-bands (for example, N is an integer greater than 1) supported by the mobile terminal itself does not need to use a synchronous sub-band for a long time, and the N sub-bands can be fully utilized to perform service transmission with network side equipment, so that the service transmission rate is high and the spectrum resource utilization rate is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart of a downlink synchronization method according to an embodiment of the present invention;
fig. 2 is a flowchart of a downlink synchronization method according to another embodiment of the present invention;
fig. 3 is a schematic diagram of a radio frame according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a network-side device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention;
fig. 6 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a flowchart of a downlink synchronization method according to an embodiment of the present invention, and as shown in fig. 1, to solve the above technical problem, an embodiment of the present invention provides a downlink synchronization method, where an execution subject of the downlink synchronization method is a network side device, for example, an eNB, an MME, and the like, and the method includes:
and 102, sending the RRC reconfiguration message to the mobile terminal, so that the mobile terminal performs downlink synchronization on one of the multiple sub-bands supported by the mobile terminal using the synchronous sub-band according to the period of using the synchronous sub-band, and performs service transmission using the sub-band using the synchronous sub-band as a service sub-band after the downlink synchronization is completed.
Specifically, after the eNB and the UE establish Radio Resource Control (RRC) connection, if an air interface parameter needs to be modified, the eNB sends an RRC reconfiguration message to the UE, so that the UE performs RRC connection reconfiguration according to the received RRC reconfiguration message.
In the embodiment of the present invention, the eNB adds the cycle using the synchronized subband in the RRC reconfiguration message, that is, the RRC reconfiguration message carries the cycle using the synchronized subband, and sends the RRC reconfiguration message carrying the cycle using the synchronized subband to the UE.
After receiving the RRC reconfiguration message sent by the eNB, the UE uses the synchronization subband to perform downlink synchronization on one of the multiple subbands supported by the UE according to the period of using the synchronization subband carried in the RRC reconfiguration message, and continues to use the subband to perform service transmission after the downlink synchronization is completed.
The unit of the period using the synchronization subband may be seconds, and in this case, the period using the synchronization subband may be 0.5s, 2s, and the like, which is not limited in this embodiment of the present invention. If the period of using the synchronous sub-band is 2s, the UE firstly uses the synchronous sub-band to perform downlink synchronization on one sub-band of the multiple sub-bands supported by the UE in each 2s, and continues to use the sub-band to perform service transmission after the downlink synchronization is completed. It should be noted that, at this time, the time of downlink synchronization is less than 2s, so that it can be ensured that, in each 2s, the UE can use a sub-band as a synchronization sub-band first, and then use the sub-band as a service sub-band, so that the UE avoids occupying a sub-band for a long time to perform downlink synchronization, and can fully utilize the sub-band to perform service transmission, and the service transmission rate and the spectrum resource utilization rate are high.
The unit of the period using the synchronization subband may also be a radio frame, and in this case, the period using the synchronization subband may be 64 radio frames, 128 radio frames, and the like, which is not limited in the embodiment of the present invention. If the period of using the synchronous sub-band is 64 wireless frames, the UE firstly uses the synchronous sub-band to perform downlink synchronization on one sub-band of the multiple sub-bands supported by the UE during each time of transmitting 64 wireless frames, and continues to use the sub-band to perform service transmission after the downlink synchronization is completed. It should be noted that, at this time, the time for downlink synchronization is less than the time required for the UE to transmit 64 radio frames, so that it can be ensured that, in the time required for the UE to transmit 64 radio frames, the UE can use a sub-band as a synchronization sub-band first, and then use the sub-band as a service sub-band, so that the UE avoids occupying a sub-band for a long time to perform downlink synchronization, and can fully utilize the sub-band to perform service transmission, and the service transmission rate is high and the spectrum resource utilization rate is high.
It should be noted that the unit of the period using the synchronization subband in the embodiment of the present invention is not limited to the second and the radio frame, and this is not specifically limited in the embodiment of the present invention.
In the downlink synchronization method provided in the embodiment of the present invention, a cycle of using a synchronization subband is added in an RRC reconfiguration message by a network side device, and the RRC reconfiguration message carrying the cycle of using the synchronization subband is sent to a mobile terminal, so that after receiving the RRC reconfiguration message sent by the network side device, the mobile terminal performs downlink synchronization on one of multiple subbands supported by the mobile terminal using the synchronization subband according to the cycle of using the synchronization subband carried in the RRC reconfiguration message, and continues to use the subband for service transmission after the downlink synchronization is completed. One sub-band in a plurality of sub-bands (for example, N is an integer greater than 1) supported by the mobile terminal itself does not need to use a synchronous sub-band for a long time, and the N sub-bands can be fully utilized to perform service transmission with network side equipment, so that the service transmission rate is high and the spectrum resource utilization rate is high.
Based on any of the above embodiments, the process of determining, by the network side device, the period using the synchronization subband, that is, acquiring the RRC reconfiguration message in the embodiment of the present invention further includes:
and determining the period of using the synchronous sub-band according to the capability of the mobile terminal.
Specifically, the eNB determines the period of using the synchronization sub-band before transmitting the RRC reconfiguration message to the UE. In the embodiment of the invention, the eNB determines the period of using the synchronous sub-band according to the capability of the UE.
The capability of the UE refers to the longest time that the UE does not perform downlink synchronization with the eNB under the condition that the UE can guarantee the quality of service transmission. It should be noted that the eNB needs to perform different tests for different UEs before determining the period using the synchronization subband to determine the capability of different UEs.
It can be understood that the longer the above maximum time, the stronger the capability of representing the UE, and the longer the period for using the synchronization subband determined by the eNB.
The downlink synchronization method provided by the embodiment of the invention determines the period of using the synchronization sub-band through the capability of the mobile terminal, so that the network side equipment can accurately determine the period of using the synchronization sub-band.
Based on any of the above embodiments, the embodiment of the present invention further describes the period using the synchronization subband, that is, the unit of the period using the synchronization subband is a radio frame, and the value of the period using the synchronization subband is 1, 64, 128, 256, 512, or 1024.
Specifically, the unit of the period using the synchronization subband is determined as the radio frame in the embodiment of the present invention, and the period using the synchronization subband may be 1 radio frame, 64 radio frames, 128 radio frames, 256 radio frames, 512 radio frames, 1024 radio frames, or the like. If the period of using the synchronous sub-band is 64 wireless frames, the UE firstly uses the synchronous sub-band to perform downlink synchronization on one sub-band of the multiple sub-bands supported by the UE during each time of transmitting 64 wireless frames, and continues to use the sub-band to perform service transmission after the downlink synchronization is completed.
It should be noted that, in the embodiment of the present invention, the eNB may randomly select one period using the synchronization subband from 64 radio frames, 128 radio frames, 256 radio frames, 512 radio frames, or 1024 radio frames, or may select the period using the synchronization subband according to the capability of the UE. It can be understood that the stronger the UE capability is, the larger the value of the period selected by the eNB to use the synchronization subband is.
Based on any of the above embodiments, fig. 2 is a flowchart of a downlink synchronization method according to another embodiment of the present invention, as shown in fig. 2, to solve the above technical problem, an embodiment of the present invention provides a downlink synchronization method, an execution subject of which is a mobile terminal, for example, a 5G terminal, and the method includes:
Specifically, in the embodiment of the present invention, the eNB adds a cycle using the synchronization subband in the RRC reconfiguration message, that is, the RRC reconfiguration message carries the cycle using the synchronization subband, and sends the RRC reconfiguration message carrying the cycle using the synchronization subband to the UE. The period using the synchronization subband has been described in detail in the above embodiments, and is not described herein again.
After receiving the RRC reconfiguration message sent by the eNB, the UE uses the synchronization subband to perform downlink synchronization on one of the multiple subbands supported by the UE according to the period of using the synchronization subband carried in the RRC reconfiguration message, and continues to use the subband to perform service transmission after the downlink synchronization is completed.
The unit of the period using the synchronization subband may be second, may also be a radio frame, and may also be other units.
The method for the UE to determine one synchronization subband from multiple subbands supported by the UE is described in detail in the foregoing embodiments, and is not described here again.
In the downlink synchronization method provided in the embodiment of the present invention, a cycle of using a synchronization subband is added in an RRC reconfiguration message by a network side device, and the RRC reconfiguration message carrying the cycle of using the synchronization subband is sent to a mobile terminal, so that after receiving the RRC reconfiguration message sent by the network side device, the mobile terminal performs downlink synchronization on one of multiple subbands supported by the mobile terminal using the synchronization subband according to the cycle of using the synchronization subband carried in the RRC reconfiguration message, and continues to use the subband for service transmission after the downlink synchronization is completed. One sub-band in a plurality of sub-bands (for example, N is an integer greater than 1) supported by the mobile terminal itself does not need to use a synchronous sub-band for a long time, and the N sub-bands can be fully utilized to perform service transmission with network side equipment, so that the service transmission rate is high and the spectrum resource utilization rate is high.
Based on any of the above embodiments, the embodiments of the present invention describe a process of configuring a synchronization subband for a mobile terminal, that is, performing downlink synchronization on one synchronization subband used in a plurality of subbands supported by the mobile terminal according to the period of using the synchronization subband, including:
determining a starting frame using the synchronous sub-band according to the period using the synchronous sub-band;
and when the currently transmitted wireless frame number accords with the initial frame of the used synchronous sub-band, one of the sub-bands supported by the user uses the synchronous sub-band to carry out downlink synchronization.
Specifically, in the embodiment of the present invention, the unit of the period of the used synchronization subband is a radio frame, and after receiving an RRC reconfiguration message sent by an eNB, a UE determines, according to the period of the used synchronization subband carried in the RRC reconfiguration message, an initial frame of the used synchronization subband, and performs downlink synchronization on one of multiple subbands supported by the UE using the synchronization subband only when a currently transmitted radio frame number is consistent with an initial frame number of the used synchronization subband.
Based on any of the above embodiments, the process of determining, by a mobile terminal, a start frame using a synchronization subband is described in the embodiments of the present invention, that is, according to the period using the synchronization subband, a calculation formula for determining the start frame using the synchronization subband is as follows:
Nf mod syncPeriod＝0；
where Nf is the currently transmitted radio frame number, syncPeriod is the value of the period using the synchronization subband, and mod is the remainder function.
Specifically, if syncPeriod is 64, the above calculation formula is satisfied only when Nf is 0, 64 …, and the starting frame number of the synchronization subband is 0, 64 ….
Referring to fig. 3 for further explanation of the embodiment of the present invention, fig. 3 is a schematic diagram of a radio frame according to the embodiment of the present invention, as shown in fig. 3, where the number of multiple sub-bands supported by a UE is 5, a sub-band for transmitting a radio frame in a first row is referred to as sub-band 1, …, and a sub-band for transmitting a radio frame in a fifth row is referred to as sub-band 5, and if syncPeriod is 64, the UE receives an RRC reconfiguration message sent by an eNB, and sequentially refers to radio frames transmitted as radio frame 0 and radio frame 1 according to a time sequence, so that according to the above formula, it can be determined that a starting frame of a synchronization sub-band is used when a radio frame number of a current transmission is 0, and 64 ….
The UE sequentially transmits a radio frame 0, a radio frame 1, a radio frame 0 is transmitted, one sub-band 1 is randomly selected from 5 sub-bands supported by the UE to transmit the radio frame 0, at the moment, the sub-band 1 of the radio frame 0 is transmitted, PSS and SSS sequences of synchronous sub-bands are read to perform downlink synchronization, and when the downlink synchronization is completed, the UE adjusts the sub-band 1 to be a service sub-band to transmit the radio frame 1 and the radio frame 2 …, so that service transmission is performed with the eNB. When the radio frame 64 is transmitted, one sub-band 1 is randomly selected from a plurality of sub-bands supported by the UE to transmit the radio frame 64, at this time, the sub-band 1 of the radio frame 64 reads the PSS and SSS sequences of the synchronized sub-band to perform downlink synchronization, and when the downlink synchronization is completed, the UE adjusts the sub-band 1 to a service sub-band to transmit the radio frame 65, and the radio frame 66 … performs service transmission with the eNB. It should be noted that, in fig. 3, the radio frame 0 and the radio frame 64 transmitted in the subband 1 are not filled, which means that they are used for performing downlink synchronization, and other radio frames transmitted in the subband 1 and all radio frames transmitted in other subbands are filled, which means that they can transmit traffic, and resources therein can be scheduled.
Based on any of the above embodiments, fig. 4 is a schematic structural diagram of a network-side device according to an embodiment of the present invention, and as shown in fig. 4, the network-side device includes:
an obtaining module 401, configured to obtain an RRC reconfiguration message, where the RRC reconfiguration message carries a cycle of using a synchronization subband; a sending module 402, configured to send the RRC reconfiguration message to the mobile terminal, so that the mobile terminal performs downlink synchronization on one of the multiple sub-bands supported by the mobile terminal according to the period of using the synchronous sub-band, and performs service transmission using the sub-band using the synchronous sub-band as a service sub-band after the downlink synchronization is completed.
Specifically, in the embodiment of the present invention, the obtaining module 401 of the eNB adds a cycle of using the synchronized subband in the RRC reconfiguration message, that is, the RRC reconfiguration message carries the cycle of using the synchronized subband, and the sending module 402 of the eNB sends the RRC reconfiguration message carrying the cycle of using the synchronized subband to the UE. The period using the synchronization subband has been described in detail in the above embodiments, and is not described herein again.
After receiving the RRC reconfiguration message sent by the eNB, the UE uses the synchronization subband to perform downlink synchronization on one of the multiple subbands supported by the UE according to the period of using the synchronization subband carried in the RRC reconfiguration message, and continues to use the subband to perform service transmission after the downlink synchronization is completed.
The unit of the period using the synchronization subband may be second, may also be a radio frame, and may also be other units.
The method for the UE to determine one synchronization subband from multiple subbands supported by the UE is described in detail in the foregoing embodiments, and is not described here again.
In the network side device provided in the embodiment of the present invention, by adding the cycle using the synchronized subband to the RRC reconfiguration message and sending the RRC reconfiguration message carrying the cycle using the synchronized subband to the mobile terminal, after receiving the RRC reconfiguration message sent by the network side device, the mobile terminal performs downlink synchronization on one of the multiple subbands supported by the mobile terminal using the synchronized subband according to the cycle using the synchronized subband carried in the RRC reconfiguration message, and continues to use the subband to perform service transmission after the downlink synchronization is completed. One sub-band in a plurality of sub-bands (for example, N is an integer greater than 1) supported by the mobile terminal itself does not need to use a synchronous sub-band for a long time, and the N sub-bands can be fully utilized to perform service transmission with network side equipment, so that the service transmission rate is high and the spectrum resource utilization rate is high.
Based on any of the above embodiments, fig. 5 is a schematic structural diagram of a mobile terminal according to an embodiment of the present invention, and as shown in fig. 5, the mobile terminal includes:
a receiving module 501, configured to receive an RRC reconfiguration message sent by a network side device, where the RRC reconfiguration message carries a cycle of using a synchronization subband; a downlink synchronization module 502, configured to perform downlink synchronization on one of the multiple sub-bands supported by the downlink synchronization module according to the period of using the synchronization sub-band, and perform service transmission as a service sub-band after the downlink synchronization is completed.
Specifically, in the embodiment of the present invention, the eNB adds a cycle using the synchronization subband in the RRC reconfiguration message, that is, the RRC reconfiguration message carries the cycle using the synchronization subband, and sends the RRC reconfiguration message carrying the cycle using the synchronization subband to the UE. The period using the synchronization subband has been described in detail in the above embodiments, and is not described herein again.
After the receiving module 501 of the UE receives the RRC reconfiguration message sent by the eNB, the downlink synchronization module 502 of the UE uses the synchronization subband to perform downlink synchronization on one subband of the multiple subbands supported by the UE according to the period of using the synchronization subband carried in the RRC reconfiguration message, and continues to use the subband to perform service transmission after the downlink synchronization is completed.
The unit of the period using the synchronization subband may be second, may also be a radio frame, and may also be other units.
The method for the UE to determine one synchronization subband from multiple subbands supported by the UE is described in detail in the foregoing embodiments, and is not described here again.
In the mobile terminal provided in the embodiment of the present invention, the network side device adds the cycle of using the synchronization subband in the RRC reconfiguration message, and sends the RRC reconfiguration message carrying the cycle of using the synchronization subband to the mobile terminal, so that after receiving the RRC reconfiguration message sent by the network side device, the mobile terminal performs downlink synchronization on one of the multiple subbands supported by the mobile terminal using the synchronization subband according to the cycle of using the synchronization subband carried in the RRC reconfiguration message, and continues to use the subband to perform service transmission after the downlink synchronization is completed. One sub-band in a plurality of sub-bands (for example, N is an integer greater than 1) supported by the mobile terminal itself does not need to use a synchronous sub-band for a long time, and the N sub-bands can be fully utilized to perform service transmission with network side equipment, so that the service transmission rate is high and the spectrum resource utilization rate is high.
Fig. 6 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 6, the electronic device may include: a processor (processor)601, a communication Interface (Communications Interface)602, a memory (memory)603 and a communication bus 604, wherein the processor 601, the communication Interface 602 and the memory 603 complete communication with each other through the communication bus 604. The processor 601 may call a computer program stored on the memory 603 and executable on the processor 601 to perform the methods provided by the above embodiments, including for example: acquiring an RRC reconfiguration message, wherein the RRC reconfiguration message carries a period for using a synchronous sub-band; and sending the RRC reconfiguration message to a mobile terminal, so that the mobile terminal performs downlink synchronization on one of a plurality of sub-bands supported by the mobile terminal according to the period of using the synchronous sub-band, and performs service transmission by using the sub-band using the synchronous sub-band as a service sub-band after the downlink synchronization is completed. Or comprises the following steps: receiving an RRC reconfiguration message sent by a network side device, wherein the RRC reconfiguration message carries a period for using a synchronous sub-band; and according to the period using the synchronous sub-band, performing downlink synchronization on one of the sub-bands supported by the user by using the synchronous sub-band, and performing service transmission by using the sub-band as a service sub-band after the downlink synchronization is completed.
In addition, the logic instructions in the memory 603 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or make a contribution to the prior art, or may be implemented in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the transmission method provided in the foregoing embodiments when executed by a processor, and the method includes: acquiring an RRC reconfiguration message, wherein the RRC reconfiguration message carries a period for using a synchronous sub-band; and sending the RRC reconfiguration message to a mobile terminal, so that the mobile terminal performs downlink synchronization on one of a plurality of sub-bands supported by the mobile terminal according to the period of using the synchronous sub-band, and performs service transmission by using the sub-band using the synchronous sub-band as a service sub-band after the downlink synchronization is completed. Or comprises the following steps: receiving an RRC reconfiguration message sent by a network side device, wherein the RRC reconfiguration message carries a period for using a synchronous sub-band; and according to the period using the synchronous sub-band, performing downlink synchronization on one of the sub-bands supported by the user by using the synchronous sub-band, and performing service transmission by using the sub-band as a service sub-band after the downlink synchronization is completed.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A downlink synchronization method is characterized by comprising the following steps:
acquiring an RRC reconfiguration message, wherein the RRC reconfiguration message carries a period for using a synchronous sub-band;
and sending the RRC reconfiguration message to a mobile terminal, so that the mobile terminal performs downlink synchronization on one of a plurality of sub-bands supported by the mobile terminal according to the period of using the synchronous sub-band, and performs service transmission by using the sub-band using the synchronous sub-band as a service sub-band after the downlink synchronization is completed.
2. The downlink synchronization method according to claim 1, wherein the acquiring the RRC reconfiguration message further comprises:
and determining the period of using the synchronous sub-band according to the capability of the mobile terminal.
3. The downlink synchronization method according to claim 1 or 2, wherein the unit of the period using the synchronization subband is a radio frame, and the value of the period using the synchronization subband is 1, 64, 128, 256, 512, or 1024.
4. A downlink synchronization method is characterized by comprising the following steps:
receiving an RRC reconfiguration message sent by a network side device, wherein the RRC reconfiguration message carries a period for using a synchronous sub-band;
and according to the period using the synchronous sub-band, performing downlink synchronization on one of the sub-bands supported by the user by using the synchronous sub-band, and performing service transmission by using the sub-band as a service sub-band after the downlink synchronization is completed.
5. The downlink synchronization method according to claim 4, wherein downlink synchronization is performed on one of the plurality of sub-bands supported by the downlink synchronization method using the synchronization sub-band according to the period of using the synchronization sub-band, and the method comprises:
determining a starting frame using the synchronous sub-band according to the period using the synchronous sub-band;
and when the currently transmitted wireless frame number accords with the initial frame of the used synchronous sub-band, one of the sub-bands supported by the user uses the synchronous sub-band to carry out downlink synchronization.
6. The downlink synchronization method according to claim 5, wherein the calculation formula for determining the start frame of the synchronization sub-band according to the period of the synchronization sub-band is:
Nf mod syncPeriod＝0；
where Nf is the currently transmitted radio frame number, syncPeriod is the value of the period using the synchronization subband, and mod is the remainder function.
7. A network-side device, comprising:
an obtaining module, configured to obtain an RRC reconfiguration message, where the RRC reconfiguration message carries a cycle of using a synchronization subband;
and the sending module is used for sending the RRC reconfiguration message to the mobile terminal so that the mobile terminal can perform downlink synchronization on one of the multiple sub-bands supported by the mobile terminal according to the period of using the synchronous sub-band, and after the downlink synchronization is completed, the sub-band using the synchronous sub-band is used as a service sub-band for service transmission.
8. A mobile terminal, comprising:
a receiving module, configured to receive an RRC reconfiguration message sent by a network side device, where the RRC reconfiguration message carries a cycle of using a synchronization subband;
and the downlink synchronization module is used for performing downlink synchronization on one synchronous sub-band in the plurality of sub-bands supported by the downlink synchronization module according to the period of using the synchronous sub-band, and performing service transmission as a service sub-band after the downlink synchronization is completed.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the down synchronization method according to any of claims 1 to 6 when executing the program.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the downlink synchronization method according to any one of claims 1 to 6.
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