CN109787729B - Resource multiplexing method, system and computer readable storage medium - Google Patents
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Abstract
The present disclosure provides a resource multiplexing method, system and computer-readable storage medium, and relates to the field of fifth-generation mobile communication technologies. The resource multiplexing method comprises the following steps: the base station divides a single channel into a plurality of sub-bands according to the preset single channel division number; determining whether a PDCCH is included in each sub-band; and the base station sends subband information to the terminal, wherein the subband information comprises information whether each subband comprises the PDCCH, so that the terminal selects the subband from the subbands not comprising the PDCCH for downlink data transmission. By the method, a single channel can be divided into a plurality of sub-bands, and whether the sub-bands comprise the PDCCH is identified, so that the terminal selects the sub-bands from the sub-bands not comprising the PDCCH for downlink data transmission by taking the sub-bands as a unit, thereby avoiding frequency resource fragmentation waste caused by mismatching of a bandwidth supported by a user and a channel bandwidth, and improving the utilization rate of frequency resources.
Description
Technical Field
The present disclosure relates to the field of fifth-generation mobile communications technologies, and in particular, to a resource reuse method, system, and computer-readable storage medium.
Background
In an LTE (Long Term Evolution) system, a PDCCH (Physical Downlink Control Channel) and a PDSCH (Physical Downlink Shared Channel) have the same bandwidth, and support carrier bandwidths of 1.4MHz, 3MHz, 5MHz, 10MHz, 15MHz, 20MHz, and the like.
In a 5G (5th-Generation, 5th Generation mobile communication technology) system, a single carrier maximum bandwidth supports 100MHz to 400MHz, bandwidths of a PDCCH and a PDSCH may be different, and bandwidths of different users may be different.
Disclosure of Invention
The inventor finds that, because the bandwidth of a single carrier in a 5G system is large, the bandwidths of the PDCCH and the PDSCH may be different, and the bandwidths of different users may also be different, the frequency resources may be idle with fragmented resources, and the frequency resource utilization rate is reduced.
An object of the present disclosure is to improve frequency resource utilization.
According to an aspect of the present disclosure, a resource multiplexing method is provided, including: the base station divides a single channel into a plurality of sub-bands according to the preset single channel division number; determining whether a PDCCH is included in each sub-band; and the base station sends subband information to the terminal, wherein the subband information comprises information whether each subband comprises the PDCCH, so that the terminal selects the subband from the subbands not comprising the PDCCH for downlink data transmission.
Optionally, the subband information includes bitmap information, each 1 bit in the bitmap corresponds to one subband, and each bit value in the bitmap identifies the corresponding subband as including the PDCCH or not including the PDCCH.
Optionally, the method further comprises: and the terminal selects one or more sub-bands from the idle sub-bands not comprising the PDCCH for downlink data transmission according to the sub-band information, the frequency band occupation condition and the bandwidth requirement.
Optionally, the method further comprises: and the base station determines the preset single-channel division number according to the PDCCH width and the single-channel width.
By the method, a single channel can be divided into a plurality of sub-bands, and whether the sub-bands comprise the PDCCH is identified, so that the terminal selects the sub-bands from the sub-bands not comprising the PDCCH for downlink data transmission by taking the sub-bands as a unit, thereby avoiding frequency resource fragmentation waste caused by mismatching of a bandwidth supported by a user and a channel bandwidth, and improving the utilization rate of frequency resources.
According to another aspect of the present disclosure, a resource multiplexing system is provided, including: the base station is used for dividing a single channel into a plurality of sub-bands according to the preset single channel division number, determining whether each sub-band comprises the PDCCH, and sending sub-band information to the terminal, wherein the sub-band information comprises the information whether each sub-band comprises the PDCCH; and the terminal is used for selecting the sub-band from the sub-bands not comprising the PDCCH according to the sub-band information for data transmission.
Optionally, the subband information includes bitmap information, each 1 bit in the bitmap corresponds to one subband, and each bit value in the bitmap identifies the corresponding subband as including the PDCCH or not including the PDCCH.
Optionally, the terminal is configured to select one or more subbands from idle subbands that do not include the PDCCH according to subband information, a frequency band occupation situation, and a bandwidth requirement, and perform downlink data transmission.
Optionally, the base station is further configured to determine the predetermined single channel division number according to the PDCCH width and the single channel width.
According to still another aspect of the present disclosure, there is provided a resource multiplexing system, including: a memory; and a processor coupled to the memory, the processor configured to perform any of the resource multiplexing methods mentioned above based on instructions stored in the memory.
The resource multiplexing system can divide a single channel into a plurality of sub-bands and identify whether the sub-bands comprise the PDCCH, so that the terminal selects the sub-bands from the sub-bands not comprising the PDCCH for downlink data transmission by taking the sub-bands as a unit, thereby avoiding frequency resource fragmentation waste caused by mismatching of a bandwidth supported by a user and a channel bandwidth and improving the utilization rate of frequency resources.
According to yet another aspect of the present disclosure, a computer-readable storage medium is proposed, on which computer program instructions are stored, which instructions, when executed by a processor, implement the steps of any of the above mentioned resource multiplexing methods.
By dividing a single channel into a plurality of sub-bands and identifying whether the sub-bands include the PDCCH or not, the resource multiplexing system can select the sub-bands from the sub-bands not including the PDCCH by taking the sub-bands as a unit for downlink data transmission, thereby avoiding frequency resource fragmentation waste caused by mismatching of a bandwidth supported by a user and a channel bandwidth and improving the utilization rate of frequency resources.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:
fig. 1 is a flowchart of an embodiment of a resource multiplexing method of the present disclosure.
Fig. 2 is a schematic diagram of an embodiment of a resource multiplexing method according to the present disclosure.
Fig. 3 is a schematic diagram of an embodiment of a resource multiplexing system of the present disclosure.
Fig. 4 is a schematic diagram of another embodiment of the resource multiplexing system of the present disclosure.
Fig. 5 is a schematic diagram of a resource multiplexing system according to another embodiment of the disclosure.
Detailed Description
The technical solution of the present disclosure is further described in detail by the accompanying drawings and examples.
A flowchart of one embodiment of a resource multiplexing method of the present disclosure is shown in fig. 1.
In step 101, the base station divides a single channel into a plurality of subbands according to a predetermined single channel division number. If the single channel is 100M and the predetermined single channel division number is 5, the channel is divided into 5 subbands, each subband being 20M.
In step 102, it is determined whether a PDCCH is included in each subband. As shown in fig. 2, a single channel is divided into 5 sub-bands, wherein sub-bands b and c marked by oblique lines include PDCCHs.
In step 103, the base station sends subband information to the terminal, where the subband information includes information on whether each subband includes a PDCCH, so that the terminal selects a subband from subbands that do not include the PDCCH for downlink data transmission.
By the method, a single channel can be divided into a plurality of sub-bands, and whether the sub-bands comprise the PDCCH is identified, so that the terminal selects the sub-bands from the sub-bands not comprising the PDCCH for downlink data transmission by taking the sub-bands as a unit, thereby avoiding frequency resource fragmentation waste caused by mismatching of a bandwidth supported by a user and a channel bandwidth, and improving the utilization rate of frequency resources.
In one embodiment, the subband information may include bitmap information, where each 1 bit in the bitmap corresponds to one subband, and each bit value in the bitmap identifies the corresponding subband as including PDCCH or not including PDCCH, for example, 1 identifies that the subband includes PDCCH, and 0 identifies that the subband does not include PDCCH. In one embodiment, a new channel may be defined or a bitmap may be transmitted to a user using SIB (System Information Block), group-common DCI (Downlink Control Information), or UE specific DCI.
By the method, the sub-band identification can be carried out by utilizing the bitmap which is easy to analyze, the analysis efficiency of the terminal is improved, and the occupation of terminal resources is reduced.
In one embodiment, different channels may be divided into different numbers of subbands according to the conditions of each channel, the bandwidth requirement of the terminal, and the PDCCH width requirement, so as to improve the adaptive capability of the system.
In an embodiment, the predetermined single channel division number may be determined according to a PDCCH width and a single channel width, and if the single channel width is 100M and the PDCCH width is 20M, the predetermined single channel division number is determined to be 5, so as to reduce wasted frequency resources in a subband including the PDCCH, and further improve a utilization rate of downlink frequency resources.
In an embodiment, because the bandwidths required by the terminals are different, the terminal may select one or more subbands from idle subbands that do not include the PDCCH according to subband information, a frequency band occupation situation, and a bandwidth requirement for downlink data transmission. As shown in fig. 2, user 1 supports a bandwidth of 40MHz, and user 2 supports a bandwidth of also 40MHz, so that user 1 may use sub-band a for downlink data transmission, sub-band b for downlink control data transmission, and user 2 may use sub-band c for downlink data transmission, and sub-band d for downlink control data transmission, thereby making full use of bandwidth resources and avoiding collision. If user 3 supports 100MHz bandwidth in the case of idle resources in fig. 2, downlink data transmission may be performed using discontinuous subbands a, c, and e, and downlink control data transmission may be performed using subbands b and d.
By the method, the proper amount of bandwidth can be allocated according to the bandwidth requirement of the user by taking the sub-band as a unit, so that the bandwidth requirement of the user can be met.
In an embodiment, when a user needs multiple subbands, subbands belonging to different channels may be allocated to the user, so as to further improve utilization rate of frequency resources and increase the number of users that can be carried by the network.
A schematic diagram of one embodiment of a resource multiplexing system of the present disclosure is shown in fig. 3. The base station 31 can divide a single channel into a plurality of subbands according to a predetermined single channel division number, determine whether each subband includes a PDCCH, and transmit subband information including information whether each subband includes the PDCCH to the terminal. The terminals 321-32 n can select a sub-band from sub-bands not including the PDCCH according to the sub-band information for downlink data transmission.
The resource multiplexing system can divide a single channel into a plurality of sub-bands and identify whether the sub-bands comprise the PDCCH, so that the terminal selects the sub-bands from the sub-bands not comprising the PDCCH for downlink data transmission by taking the sub-bands as a unit, thereby avoiding frequency resource fragmentation waste caused by mismatching of a bandwidth supported by a user and a channel bandwidth and improving the utilization rate of frequency resources.
In one embodiment, the base station 31 may identify whether the subband includes the PDCCH through bitmap information. Each 1 bit in the bitmap corresponds to one subband, and each bit value in the bitmap identifies the corresponding subband as including a PDCCH or not including the PDCCH, for example, 1 identifies that the subband includes the PDCCH, and 0 identifies that the subband does not include the PDCCH.
The resource multiplexing system can utilize the bitmap which is easy to analyze to carry out sub-band identification, thereby improving the analysis efficiency of the terminal and reducing the occupation of terminal resources.
In an embodiment, the base station may divide different channels into different numbers of subbands according to the condition of each channel, the bandwidth requirement of the terminal, and the PDCCH width requirement, so as to improve the adaptive capability of the system.
In an embodiment, the base station may determine the predetermined single-channel division number according to the PDCCH width and the single-channel width, and if the single-channel width is 100M and the PDCCH width is 20M, determine the predetermined single-channel division number to be 5, thereby reducing the wasted frequency resources in the sub-band including the PDCCH, and further improving the utilization rate of the downlink frequency resources.
In an embodiment, because the bandwidths required by the terminals are different, the terminal may select one or more subbands from idle subbands that do not include the PDCCH according to subband information, a frequency band occupation situation, and a bandwidth requirement for downlink data transmission. As shown in fig. 2, user 1 supports a bandwidth of 40MHz, and user 2 supports a bandwidth of also 40MHz, so that user 1 may use sub-band a for downlink data transmission, sub-band b for downlink control data transmission, and user 2 may use sub-band c for downlink data transmission, and sub-band d for downlink control data transmission, thereby making full use of bandwidth resources and avoiding collision. If user 3 supports 100MHz bandwidth in the case of idle resources in fig. 2, downlink data transmission may be performed using discontinuous subbands a, c, and e, and downlink control data transmission may be performed using subbands b and d.
The resource multiplexing system can allocate a proper amount of bandwidth according to the bandwidth requirement of a user by taking the sub-band as a unit, thereby ensuring that the bandwidth requirement of the user is met.
In one embodiment, when a user needs multiple subbands, the user may use subbands belonging to different channels, thereby further improving the utilization rate of frequency resources and increasing the number of users that can be carried by the network.
Fig. 4 shows a schematic structural diagram of an embodiment of a base station or a terminal in the resource multiplexing system of the present disclosure. The base station and the terminal in the resource multiplexing system respectively comprise a memory 410 and a processor 420. Wherein: the memory 410 may be a magnetic disk, flash memory, or any other non-volatile storage medium. The memory is used for storing instructions executed by the base station or the terminal in the corresponding embodiments of the resource multiplexing method above. Processor 420 is coupled to memory 410 and may be implemented as one or more integrated circuits, such as a microprocessor or microcontroller. The processor 420 is configured to execute instructions stored in the memory, and can improve the utilization of the frequency resources.
In one embodiment, as also shown in fig. 5, the base station and the terminal in the resource multiplexing system 500 respectively include a memory 510 and a processor 520. Processor 520 is coupled to memory 510 by a BUS 530. The resource multiplexing system 500 may also be coupled to an external storage device 550 via a storage interface 540 for invoking external data, and may also be coupled to a network or another computer system (not shown) via a network interface 560. And will not be described in detail herein.
In this embodiment, the utilization rate of the frequency resource can be improved by storing the data instruction in the memory and processing the instruction by the processor.
In another embodiment, a computer readable storage medium has stored thereon computer program instructions which, when executed by a processor, implement the steps of the method in the corresponding embodiment of the resource multiplexing method. As will be appreciated by one skilled in the art, embodiments of the present disclosure may be provided as a method, apparatus, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable non-transitory storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Thus far, the present disclosure has been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
The methods and apparatus of the present disclosure may be implemented in a number of ways. For example, the methods and apparatus of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above-described order for the steps of the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless specifically stated otherwise. Further, in some embodiments, the present disclosure may also be embodied as programs recorded in a recording medium, the programs including machine-readable instructions for implementing the methods according to the present disclosure. Thus, the present disclosure also covers a recording medium storing a program for executing the method according to the present disclosure.
Finally, it should be noted that: the above examples are intended only to illustrate the technical solutions of the present disclosure and not to limit them; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will understand that: modifications to the specific embodiments of the disclosure or equivalent substitutions for parts of the technical features may still be made; all such modifications are intended to be included within the scope of the claims of this disclosure without departing from the spirit thereof.
Claims (10)
1. A resource multiplexing method comprises the following steps:
the base station divides each channel into a plurality of sub-bands according to the preset single channel division number;
determining whether each sub-band comprises a Physical Downlink Control Channel (PDCCH);
the base station sends subband information to a terminal, wherein the subband information comprises information whether each subband comprises a PDCCH (physical Downlink control channel), so that the terminal selects the subband from subbands not comprising the PDCCH for downlink data transmission, the subband information comprises bitmap information, each 1 bit in the bitmap corresponds to one subband, and each bit value in the bitmap identifies the corresponding subband as comprising the PDCCH or not comprising the PDCCH.
2. The method of claim 1, further comprising:
and the terminal selects one or more sub-bands from the idle sub-bands not comprising the PDCCH for downlink data transmission according to the sub-band information, the frequency band occupation condition and the bandwidth requirement.
3. The method of claim 2, wherein the terminal selects the plurality of subbands for downlink data transmission to be non-contiguous.
4. The method of claim 1, further comprising: and the base station determines the preset single-channel division number according to the PDCCH width and the single-channel width.
5. A resource reuse system comprising:
the base station is used for dividing a single channel into a plurality of sub-bands according to a preset single channel division number, determining whether each sub-band comprises a Physical Downlink Control Channel (PDCCH), and sending sub-band information to a terminal, wherein the sub-band information comprises information whether each sub-band comprises the PDCCH, the sub-band information comprises bitmap information, each 1 bit in the bitmap corresponds to one sub-band, and the corresponding sub-band is identified as comprising the PDCCH or not by a numerical value of each bit in the bitmap;
and the terminal is used for selecting a sub-band from the sub-bands not comprising the PDCCH according to the sub-band information for data transmission.
6. The system of claim 5, wherein the terminal is configured to select one or more subbands from idle subbands that do not include the PDCCH for downlink data transmission according to the subband information, the frequency band occupancy, and the bandwidth requirement.
7. The system of claim 6, wherein the terminal selects the plurality of subbands for downlink data transmission to be non-contiguous.
8. The method of claim 5, 6 or 7,
the base station is further configured to determine the predetermined single channel division number according to the PDCCH width and the single channel width.
9. A resource reuse system comprising:
a memory; and
a processor coupled to the memory, the processor configured to perform the method of any of claims 1-4 based on instructions stored in the memory.
10. A computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, implement the steps of the method of any one of claims 1 to 4.
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