CN106255215B - Communication method and communication device - Google Patents

Communication method and communication device Download PDF

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Publication number
CN106255215B
CN106255215B CN201610639483.9A CN201610639483A CN106255215B CN 106255215 B CN106255215 B CN 106255215B CN 201610639483 A CN201610639483 A CN 201610639483A CN 106255215 B CN106255215 B CN 106255215B
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Prior art keywords
bandwidth
downlink
uplink
transmission
reference signal
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CN106255215A (en
Inventor
李明菊
朱亚军
张云飞
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Priority to CN201610639483.9A priority Critical patent/CN106255215B/en
Priority to PCT/CN2016/107954 priority patent/WO2018023906A1/en
Publication of CN106255215A publication Critical patent/CN106255215A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a communication method and a communication device, wherein the communication method comprises the following steps: configuring a radio frame taking a downlink subframe as a starting subframe; and sending a scheduling signaling on the downlink subframe to configure an uplink subframe for uplink transmission in the radio frame. The technical scheme of the invention can flexibly configure the position and the number of the uplink subframes in the wireless frame according to the actual communication scene, thereby improving the flexibility of resource scheduling and meeting the service requirement in the 5G communication scene.

Description

communication method and communication device
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communication method and a communication apparatus.
Background
Existing 4G and 4.5G mobile communication technologies are based on LTE (Long Term Evolution) and LTE-a (LTE-Advanced) radio access technologies, time-frequency resource granularity, frame structures, and the like. For example, the maximum single carrier bandwidth that can be supported by the current LTE system is 20MHz, and if a larger bandwidth is to be supported, only Carrier Aggregation (CA) is used. In addition, the current frame structure mainly includes: FDD (Frequency Division duplex) frame structures, TDD (Time Division duplex) frame structures, and dynamic frame structures used by LAA (LTE Assisted Access) unlicensed carriers. Regardless of the frame structure, the subframe structure includes 10 subframes, each subframe is 1ms, each subframe includes two slots (one slot is 0.5 ms), and each slot includes 7 symbols. In the frequency domain, in the LTE system, the subcarrier spacing is mainly 15KHz, and one RB (Resource Block) includes 12 subcarriers. A new 3.75KHz sub-carrier spacing is proposed in NB-IoT (Narrow Band Internet of things over cellular), and the carrier bandwidth of NB-IoT is only 180 KHz.
in terms of resource allocation, both the FDD frame structure and the TDD frame structure use 1ms subframes as Time-domain scheduling granularity, except that when DwPTS (Downlink Pilot Time Slot) in a special subframe in the TDD frame structure is used for transmitting data, the Time-domain scheduling granularity is less than 1 ms. Similarly, in the frame structure used by the LAA unlicensed carrier, the downlink scheduling time domain granularity which multiplexes DwPTS as a partial subframe also appears, and meanwhile, the scheduling granularity of the 1ms whole subframe is also used. In the FDD frame structure and the TDD frame structure, except for the special subframe in the TDD frame structure having the downlink transmission time and the uplink transmission time, other subframes are uplink transmission or downlink transmission, or are separated by a time domain or a frequency domain.
It can be seen that, the current frame structure and the granularity of frequency domain resources both make the resource allocation inflexible, and the time intervals of the uplink scheduling mechanism and the HARQ feedback mechanism and the like make the time delay larger, and the 20MHz bandwidth also does not meet the requirement of high bandwidth.
The main scenes of the future 5G communication include the following three scenes: eMBBs (enhanced Mobile Broadband networks), mMTC (massive Machine Type Communication), and URLLC (Ultra-Reliable and Low Latency Communication). The three scenarios are different in the types of services and the requirements. Such as: two main indexes of the eMB service are high bandwidth and low time delay, the eMB service can support large bandwidth of 100MHz in future high-frequency communication, the whole bandwidth is probably directly allocated to a user for use at a certain moment, and the uplink scheduling time delay and the HARQ feedback time delay can bring time delay influence; the mMTC service needs a narrow-band service, and needs a long battery life, so that the service needs a frequency domain with smaller granularity and a time domain resource with wider granularity; for URLLC service, it is also necessary to reduce the delay impact caused by uplink scheduling delay and HARQ feedback delay.
That is to say, due to diversification of services, a current fixed frame structure, a fixed frequency domain resource granularity and a time domain resource granularity may cause a larger uplink scheduling delay and a longer HARQ feedback delay, and a smaller carrier bandwidth may not meet the diversified requirements of the services, and it is expected that in the future 5G communication, it is flexible enough that any one resource may be dynamically scheduled to be used at any time, which are technical problems to be solved urgently.
disclosure of Invention
Based on at least one of the above technical problems, the present invention provides a new communication scheme, which can flexibly configure the position and number of uplink subframes in a radio frame according to an actual communication scenario, thereby improving the flexibility of resource scheduling and meeting the service requirements in a 5G communication scenario.
In view of the above, according to a first aspect of the present invention, a communication method is provided, including: configuring a radio frame taking a downlink subframe as a starting subframe; and sending a scheduling signaling on the downlink subframe to configure an uplink subframe for uplink transmission in the radio frame.
In the technical scheme, a radio frame with a downlink subframe as a starting subframe is configured, and a scheduling signaling is sent on the downlink subframe to configure an uplink subframe for uplink transmission in the radio frame, so that when communication is performed, the position and the number of the uplink subframes in the radio frame can be flexibly configured according to actual communication scenes (such as the type of communication service, the uplink and downlink traffic and the like), and further, the base station and the terminal can communicate based on a flexibly configured radio frame structure, thereby avoiding large uplink scheduling delay and long HARQ feedback delay caused by adopting a fixed frame structure, improving the flexibility of resource scheduling, meeting service requirements in a 5G communication scene, and being beneficial to improving the resource utilization rate.
In the above technical solution, preferably, the communication method further includes: configuring a periodic uplink subframe in the radio frame, wherein the periodic uplink subframe is used for at least transmitting an uplink reference signal and/or a Random Access Preamble and/or an uplink scheduling request and/or a buffer status report.
further, in order to unify the licensed spectrum and the unlicensed spectrum, there may be one transmission window in each transmission period of the uplink reference signal and/or the random access preamble and/or the uplink scheduling request and/or the buffer status report, where each transmission window includes multiple transmission times, and only needs to be transmitted once at any one transmission time.
in any of the above technical solutions, preferably, the communication method further includes: configuring a first bandwidth and a second bandwidth which are used in pairs in a carrier aggregation manner, wherein the first bandwidth and the second bandwidth are the same in size and different in frequency point, and both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, wherein the priority of the first bandwidth for the downlink transmission is higher than the priority of the first bandwidth for the uplink transmission, and the priority of the second bandwidth for the uplink transmission is higher than the priority of the second bandwidth for the downlink transmission.
in this technical solution, the first bandwidth and the second bandwidth used in pair may be bandwidths used in a conventional LTE FDD system, that is, the communication method provided by the present invention is compatible with the conventional LTE FDD system. And both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, so that the first bandwidth and the second bandwidth can be flexibly scheduled to transmit corresponding services according to actual communication scenes, such as the type of communication services, the uplink and downlink traffic and the like, the efficiency of frequency spectrums is favorably improved, and the problem of low frequency spectrum efficiency caused by the fact that only one bandwidth is used for uplink and the downlink of another user in the traditional LTE FDD system is solved.
In the foregoing technical solution, further, the communication method further includes: scheduling the second bandwidth to facilitate downlink transmission when the first bandwidth is insufficient to provide downlink transmission; and scheduling the first bandwidth to facilitate uplink transmission when the second bandwidth is insufficient to provide uplink transmission.
In the technical scheme, when the first bandwidth is not enough to provide downlink transmission, the second bandwidth is scheduled to assist downlink transmission, and when the second bandwidth is not enough to provide uplink transmission, the first bandwidth is scheduled to assist uplink transmission, so that the first bandwidth and the second bandwidth can be flexibly scheduled to transmit corresponding services according to actual communication scenes, such as the type of communication services, the uplink and downlink traffic and the like, and the efficiency of a frequency spectrum is improved.
In the foregoing technical solution, further, the communication method further includes: configuring the first bandwidth to a first cell for use so as to form a downlink main cell based on the first bandwidth, and configuring the second bandwidth to a second cell for use so as to form an uplink main cell based on the second bandwidth; and indicating the bandwidth value of the downlink primary cell through the system information of the downlink primary cell, and indicating the bandwidth value of the uplink primary cell through an RRC (Radio Resource Control) signaling by the downlink primary cell.
Specifically, the bandwidth value of the downlink primary cell is indicated by MIB (Master Information Block) in the system Information of the downlink primary cell.
In the above technical solution, further, a transmission period of the downlink reference signal in the downlink primary cell is less than or equal to a transmission period of the downlink reference signal in the uplink primary cell; and the transmission period of the uplink reference signal in the uplink main cell is less than or equal to the transmission period of the uplink reference signal in the downlink main cell.
In the technical scheme, because the priority of the downlink main cell for downlink is higher than that of the uplink main cell for downlink, and the reference signal is used for channel quality detection, the transmission period of the downlink reference signal in the downlink main cell is less than or equal to that of the downlink reference signal in the uplink main cell; in contrast, since the priority of the uplink main cell for uplink is higher than that of the downlink main cell for uplink, and the reference signal is used for channel quality detection, the transmission period of the uplink reference signal in the uplink main cell is less than or equal to that of the uplink reference signal in the downlink main cell.
In any of the above technical solutions, preferably, the communication method further includes: configuring a bandwidth used in a pair in a communication system into a first bandwidth and a second bandwidth which are used independently, wherein the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, the priority of the first bandwidth for downlink transmission is higher than or equal to the priority of uplink transmission, and the priority of the second bandwidth for uplink transmission is higher than or equal to the priority of downlink transmission; and allocating the first bandwidth and the second bandwidth to two different cells for use, wherein the two different cells respectively indicate own bandwidth values through own system information.
in the technical scheme, the paired bandwidths used in the communication system, that is, the bandwidths used in the conventional LTE FDD system, that is, the communication method provided by the present invention is compatible with the conventional LTE FDD system, and specifically, the paired bandwidths used in the conventional LTE TDD system can be allocated to different users in different cells for separate use.
In any of the above technical solutions, preferably, the communication method further includes: multiplexing downlink reference signals in an LTE system to identify the cell identity; or define a new reference signal for identifying the cell identity.
In the technical solution, when the downlink reference signal is used to identify the cell identity, the downlink reference signal in the LTE system may be multiplexed, including: PSS (Primary Synchronization Signal), SSS (Secondary Synchronization Signal), CRS (Common Reference Signal), CSI-RS (Channel State Information Reference Signal), but the time domain resources and/or frequency domain resources for the transmission of these Reference credits may vary, e.g., PSS/SSS transmit simultaneously but use different frequency domain resources, which may speed up the downlink Synchronization process. Or a new reference signal may be defined, for example, the new reference signal does not need PSS/SSS, but a signal is used to indicate the cell identity, instead, the PSS and SSS are not needed to jointly indicate the cell identity, and the relative position of PSS/SSS is also not needed to indicate whether the FDD system or the TDD system, because the communication scheme provided by the present invention unifies the FDD system and the TDD system.
In any of the above technical solutions, preferably, the communication method further includes: transmitting a downlink reference signal or system information through continuous resource blocks in a frequency domain within one transmission period of the downlink reference signal or the system information; or in a transmission period of the downlink reference signal or the system information, the downlink reference signal or the system information is transmitted through resource blocks which are uniformly distributed on the whole bandwidth or on part of the bandwidth in a frequency domain; and the position of the resource block for transmitting the downlink reference signal or the system information is unchanged or regularly changed in different transmission periods.
Further, in order to unify the licensed spectrum and the unlicensed spectrum, there may be one transmission window in each transmission period of the downlink reference signal, where each transmission window includes multiple transmission times, and only needs to transmit once at any one transmission time.
in any of the above technical solutions, preferably, the communication method further includes: and adding identification information in the generated system information, wherein the identification information is used for indicating that the communication system adopts dynamic subframe configuration.
In the technical scheme, the identification information is added into the generated system information, so that the communication system can be identified by adopting new subframe configuration. Specifically, the identification may be performed by a form of IE (Information Element).
According to the second aspect of the present invention, there is also provided a communication apparatus, comprising: a configuration unit, configured to configure a radio frame with a downlink subframe as a starting subframe; a sending unit, configured to send a scheduling signaling on the downlink subframe, so as to configure an uplink subframe for uplink transmission in the radio frame.
In the technical scheme, a radio frame with a downlink subframe as a starting subframe is configured, and a scheduling signaling is sent on the downlink subframe to configure an uplink subframe for uplink transmission in the radio frame, so that when communication is performed, the position and the number of the uplink subframes in the radio frame can be flexibly configured according to actual communication scenes (such as the type of communication service, the uplink and downlink traffic and the like), and further, the base station and the terminal can communicate based on a flexibly configured radio frame structure, thereby avoiding large uplink scheduling delay and long HARQ feedback delay caused by adopting a fixed frame structure, improving the flexibility of resource scheduling, meeting service requirements in a 5G communication scene, and being beneficial to improving the resource utilization rate.
In the above technical solution, preferably, the configuration unit is further configured to: configuring a periodic uplink subframe in the radio frame, wherein the periodic uplink subframe is used for at least transmitting an uplink reference signal and/or a random access preamble and/or an uplink scheduling request and/or a buffer status report.
Further, in order to unify the licensed spectrum and the unlicensed spectrum, there may be one transmission window in each transmission period of the uplink reference signal and/or the random access preamble and/or the uplink scheduling request and/or the buffer status report, where each transmission window includes multiple transmission times, and only needs to be transmitted once at any one transmission time.
In any one of the above technical solutions, preferably, the configuration unit is further configured to: configuring a first bandwidth and a second bandwidth which are used in pairs in a carrier aggregation manner, wherein the first bandwidth and the second bandwidth are the same in size and different in frequency point, and both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, wherein the priority of the first bandwidth for the downlink transmission is higher than the priority of the first bandwidth for the uplink transmission, and the priority of the second bandwidth for the uplink transmission is higher than the priority of the second bandwidth for the downlink transmission.
In this technical solution, the first bandwidth and the second bandwidth used in pair may be bandwidths used in a conventional LTE FDD system, that is, the communication method provided by the present invention is compatible with the conventional LTE FDD system. And both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, so that the first bandwidth and the second bandwidth can be flexibly scheduled to transmit corresponding services according to actual communication scenes, such as the type of communication services, the uplink and downlink traffic and the like, the efficiency of frequency spectrums is favorably improved, and the problem of low frequency spectrum efficiency caused by the fact that only one bandwidth is used for uplink and the downlink of another user in the traditional LTE FDD system is solved.
in the above technical solution, further, the communication apparatus further includes: and a scheduling unit, configured to schedule the second bandwidth to assist downlink transmission when the first bandwidth is not enough to provide downlink transmission, and configured to schedule the first bandwidth to assist uplink transmission when the second bandwidth is not enough to provide uplink transmission.
In the technical scheme, when the first bandwidth is not enough to provide downlink transmission, the second bandwidth is scheduled to assist downlink transmission, and when the second bandwidth is not enough to provide uplink transmission, the first bandwidth is scheduled to assist uplink transmission, so that the first bandwidth and the second bandwidth can be flexibly scheduled to transmit corresponding services according to actual communication scenes, such as the type of communication services, the uplink and downlink traffic and the like, and the efficiency of a frequency spectrum is improved.
In the foregoing technical solution, the configuring unit is further configured to configure the first bandwidth for use by a first cell to form a downlink primary cell based on the first bandwidth, and configure the second bandwidth for use by a second cell to form an uplink primary cell based on the second bandwidth; the communication apparatus further includes: and an indicating unit, configured to indicate the bandwidth value of the downlink primary cell through the system information of the downlink primary cell, and indicate the bandwidth value of the uplink primary cell through an RRC signaling by the downlink primary cell.
Specifically, the bandwidth value of the downlink primary cell is indicated by the MIB in the system information of the downlink primary cell.
in the above technical solution, further, a transmission period of the downlink reference signal in the downlink primary cell is less than or equal to a transmission period of the downlink reference signal in the uplink primary cell; and the transmission period of the uplink reference signal in the uplink main cell is less than or equal to the transmission period of the uplink reference signal in the downlink main cell.
In the technical scheme, because the priority of the downlink main cell for downlink is higher than that of the uplink main cell for downlink, and the reference signal is used for channel quality detection, the transmission period of the downlink reference signal in the downlink main cell is less than or equal to that of the downlink reference signal in the uplink main cell; in contrast, since the priority of the uplink main cell for uplink is higher than that of the downlink main cell for uplink, and the reference signal is used for channel quality detection, the transmission period of the uplink reference signal in the uplink main cell is less than or equal to that of the uplink reference signal in the downlink main cell.
In any one of the above technical solutions, preferably, the configuration unit is further configured to: configuring a pair of bandwidths used in a communication system into a first bandwidth and a second bandwidth which are used independently, wherein the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, the priority of the first bandwidth for downlink transmission is higher than or equal to the priority of uplink transmission, the priority of the second bandwidth for uplink transmission is higher than or equal to the priority of downlink transmission, and the first bandwidth and the second bandwidth are allocated to two different cells for use, wherein the two different cells respectively indicate own bandwidth values through own system information.
In the technical scheme, the paired bandwidths used in the communication system, that is, the bandwidths used in the conventional LTE FDD system, that is, the communication method provided by the present invention is compatible with the conventional LTE FDD system, and specifically, the paired bandwidths used in the conventional LTE TDD system can be allocated to different users in different cells for separate use.
In any of the above technical solutions, preferably, a downlink reference signal in the LTE system is multiplexed to identify a cell identity; or define a new reference signal for identifying the cell identity.
In the technical solution, when the downlink reference signal is used to identify the cell identity, the downlink reference signal in the LTE system may be multiplexed, including: PSS, SSS, CRS, CSI-RS, but the time domain resources and/or frequency domain resources of the transmission of these reference credits may vary, e.g. PSS/SSS are transmitted simultaneously but use different frequency domain resources, which may speed up the downlink synchronization process. Or a new reference signal may be defined, for example, the new reference signal does not need PSS/SSS, but a signal is used to indicate the cell identity, instead, the PSS and SSS are not needed to jointly indicate the cell identity, and the relative position of PSS/SSS is also not needed to indicate whether the FDD system or the TDD system, because the communication scheme provided by the present invention unifies the FDD system and the TDD system.
In any of the above technical solutions, preferably, the communication device further includes: a transmission unit, configured to transmit, in a transmission period of a downlink reference signal or system information, the downlink reference signal or the system information through consecutive resource blocks in a frequency domain, or transmit, in a transmission period of the downlink reference signal or the system information, the downlink reference signal or the system information through resource blocks uniformly distributed over a whole bandwidth or uniformly distributed over a part of the bandwidth in the frequency domain; and the position of the resource block for transmitting the downlink reference signal or the system information is unchanged or regularly changed in different transmission periods.
Further, in order to unify the licensed spectrum and the unlicensed spectrum, there may be one transmission window in each transmission period of the downlink reference signal, where each transmission window includes multiple transmission times, and only needs to transmit once at any one transmission time.
In any of the above technical solutions, preferably, the communication device further includes: and the processing unit is used for adding identification information in the generated system information, wherein the identification information is used for indicating that the communication system adopts dynamic subframe configuration.
in the technical scheme, the identification information is added into the generated system information, so that the communication system can be identified by adopting new subframe configuration. In particular, the identification may be made in the form of an IE.
Through the technical scheme, the positions and the number of the uplink subframes in the wireless frame can be flexibly configured according to the actual communication scene, so that the flexibility of resource scheduling is improved, and the service requirements in the 5G communication scene are met.
Drawings
Fig. 1 shows a schematic flow chart of a communication method according to an embodiment of the invention;
Fig. 2 shows a schematic block diagram of a communication device according to a first embodiment of the invention;
Fig. 3 is a schematic diagram illustrating a location of a resource block transmitting a basic reference signal according to a first embodiment of the present invention;
fig. 4 is a diagram illustrating a location of a resource block transmitting a basic reference signal according to a second embodiment of the present invention;
Fig. 5 shows a schematic block diagram of a communication device according to a second embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
Fig. 1 shows a schematic flow diagram of a communication method according to an embodiment of the invention.
As shown in fig. 1, a communication method according to an embodiment of the present invention includes:
step S10, configuring a radio frame with the downlink subframe as the starting subframe.
Step S12, sending a scheduling signaling on the downlink subframe to configure an uplink subframe for uplink transmission in the radio frame.
In the communication method shown in fig. 1, a radio frame with a downlink subframe as a starting subframe is configured, and a scheduling signaling is sent on the downlink subframe, so as to configure an uplink subframe for uplink transmission in the radio frame, so that when performing communication, the position and the number of the uplink subframes in the radio frame can be flexibly configured according to an actual communication scenario (such as a type of a communication service, an uplink traffic volume, and the like), and further, the base station and the terminal can perform communication based on a flexibly configured radio frame structure, thereby avoiding a large uplink scheduling delay and a long HARQ feedback delay caused by adopting a fixed frame structure, improving flexibility of resource scheduling, meeting a service requirement in a 5G communication scenario, and facilitating improvement of a resource utilization rate.
further, the communication method further includes: configuring a periodic uplink subframe in the radio frame, wherein the periodic uplink subframe is used for at least transmitting an uplink reference signal and/or a random access preamble and/or an uplink scheduling request and/or a buffer status report.
further, in order to unify the licensed spectrum and the unlicensed spectrum, there may be one transmission window in each transmission period of the uplink reference signal and/or the random access preamble and/or the uplink scheduling request and/or the buffer status report, where each transmission window includes multiple transmission times, and only needs to be transmitted once at any one transmission time.
In an embodiment of the present invention, on the basis of the communication method shown in fig. 1, the method further includes: multiplexing downlink reference signals in an LTE system to identify the cell identity; or define a new reference signal for identifying the cell identity.
in the technical solution, when the downlink reference signal is used to identify the cell identity, the downlink reference signal in the LTE system may be multiplexed, including: PSS, SSS, CRS, CSI-RS, but the time domain resources and/or frequency domain resources of the transmission of these reference credits may vary, e.g. PSS/SSS are transmitted simultaneously but use different frequency domain resources, which may speed up the downlink synchronization process. Or a new reference signal may be defined, for example, the new reference signal does not need PSS/SSS, but a signal is used to indicate the cell identity, instead, the PSS and SSS are not needed to jointly indicate the cell identity, and the relative position of PSS/SSS is also not needed to indicate whether the FDD system or the TDD system, because the communication scheme provided by the present invention unifies the FDD system and the TDD system.
In an embodiment of the present invention, the communication method further includes: transmitting a downlink reference signal or system information through continuous resource blocks in a frequency domain within one transmission period of the downlink reference signal or the system information; or in a transmission period of the downlink reference signal or the system information, the downlink reference signal or the system information is transmitted through resource blocks which are uniformly distributed on the whole bandwidth or on part of the bandwidth in a frequency domain; and the position of the resource block for transmitting the downlink reference signal or the system information is unchanged or regularly changed in different transmission periods.
further, in order to unify the licensed spectrum and the unlicensed spectrum, there may be one transmission window in each transmission period of the downlink reference signal, where each transmission window includes multiple transmission times, and only needs to transmit once at any one transmission time.
In addition, the communication method further comprises: and adding identification information in the generated system information, wherein the identification information is used for indicating that the communication system adopts dynamic subframe configuration.
in the technical scheme, the identification information is added into the generated system information, so that the communication system can be identified by adopting new subframe configuration. In particular, the identification may be made in the form of an IE.
For paired bandwidths present in a communication system, the present invention proposes the following:
The first scheme is as follows:
the communication method described above further includes: configuring a first bandwidth and a second bandwidth which are used in pairs in a carrier aggregation manner, wherein the first bandwidth and the second bandwidth are the same in size and different in frequency point, and both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, wherein the priority of the first bandwidth for the downlink transmission is higher than the priority of the first bandwidth for the uplink transmission, and the priority of the second bandwidth for the uplink transmission is higher than the priority of the second bandwidth for the downlink transmission.
In this technical solution, the first bandwidth and the second bandwidth used in pair may be bandwidths used in a conventional LTE FDD system, that is, the communication method provided by the present invention is compatible with the conventional LTE FDD system. And both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, so that the first bandwidth and the second bandwidth can be flexibly scheduled to transmit corresponding services according to actual communication scenes, such as the type of communication services, the uplink and downlink traffic and the like, the efficiency of frequency spectrums is favorably improved, and the problem of low frequency spectrum efficiency caused by the fact that only one bandwidth is used for uplink and the downlink of another user in the traditional LTE FDD system is solved.
Further, when the first bandwidth is insufficient to provide downlink transmission, scheduling the second bandwidth to assist downlink transmission; and scheduling the first bandwidth to facilitate uplink transmission when the second bandwidth is insufficient to provide uplink transmission.
In the technical scheme, when the first bandwidth is not enough to provide downlink transmission, the second bandwidth is scheduled to assist downlink transmission, and when the second bandwidth is not enough to provide uplink transmission, the first bandwidth is scheduled to assist uplink transmission, so that the first bandwidth and the second bandwidth can be flexibly scheduled to transmit corresponding services according to actual communication scenes, such as the type of communication services, the uplink and downlink traffic and the like, and the efficiency of a frequency spectrum is improved.
further, the communication method further includes: configuring the first bandwidth to a first cell for use so as to form a downlink main cell based on the first bandwidth, and configuring the second bandwidth to a second cell for use so as to form an uplink main cell based on the second bandwidth; and indicating the bandwidth value of the downlink main cell through the system information of the downlink main cell, and indicating the bandwidth value of the uplink main cell through RRC signaling by the downlink main cell.
Specifically, the bandwidth value of the downlink primary cell is indicated by the MIB in the system information of the downlink primary cell.
In the above technical solution, further, a transmission period of the downlink reference signal in the downlink primary cell is less than or equal to a transmission period of the downlink reference signal in the uplink primary cell; and the transmission period of the uplink reference signal in the uplink main cell is less than or equal to the transmission period of the uplink reference signal in the downlink main cell.
In the technical scheme, because the priority of the downlink main cell for downlink is higher than that of the uplink main cell for downlink, and the reference signal is used for channel quality detection, the transmission period of the downlink reference signal in the downlink main cell is less than or equal to that of the downlink reference signal in the uplink main cell; in contrast, since the priority of the uplink main cell for uplink is higher than that of the downlink main cell for uplink, and the reference signal is used for channel quality detection, the transmission period of the uplink reference signal in the uplink main cell is less than or equal to that of the uplink reference signal in the downlink main cell.
Scheme II:
The communication method described above further includes: configuring a bandwidth used in a pair in a communication system into a first bandwidth and a second bandwidth which are used independently, wherein the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, the priority of the first bandwidth for downlink transmission is higher than or equal to the priority of uplink transmission, and the priority of the second bandwidth for uplink transmission is higher than or equal to the priority of downlink transmission; and allocating the first bandwidth and the second bandwidth to two different cells for use, wherein the two different cells respectively indicate own bandwidth values through own system information.
in the technical scheme, the paired bandwidths used in the communication system, that is, the bandwidths used in the conventional LTE FDD system, that is, the communication method provided by the present invention is compatible with the conventional LTE FDD system, and specifically, the paired bandwidths used in the conventional LTE TDD system can be allocated to different users in different cells for separate use.
Fig. 2 shows a schematic block diagram of a communication device according to a first embodiment of the invention.
as shown in fig. 2, a communication apparatus 200 according to a first embodiment of the present invention includes: a configuration unit 202 and a sending unit 204.
The configuration unit 202 is configured to configure a radio frame with a downlink subframe as a starting subframe; the sending unit 204 is configured to send a scheduling signaling on the downlink subframe, so as to configure an uplink subframe for uplink transmission in the radio frame.
In the technical scheme, a radio frame with a downlink subframe as a starting subframe is configured, and a scheduling signaling is sent on the downlink subframe to configure an uplink subframe for uplink transmission in the radio frame, so that when communication is performed, the position and the number of the uplink subframes in the radio frame can be flexibly configured according to actual communication scenes (such as the type of communication service, the uplink and downlink traffic and the like), and further, the base station and the terminal can communicate based on a flexibly configured radio frame structure, thereby avoiding large uplink scheduling delay and long HARQ feedback delay caused by adopting a fixed frame structure, improving the flexibility of resource scheduling, meeting service requirements in a 5G communication scene, and being beneficial to improving the resource utilization rate.
In the above technical solution, preferably, the configuration unit 202 is further configured to: configuring a periodic uplink subframe in the radio frame, wherein the periodic uplink subframe is used for at least transmitting an uplink reference signal and/or a random access preamble and/or an uplink scheduling request and/or a buffer status report.
Further, in order to unify the licensed spectrum and the unlicensed spectrum, there may be one transmission window in each transmission period of the uplink reference signal and/or the random access preamble and/or the uplink scheduling request and/or the buffer status report, where each transmission window includes multiple transmission times, and only needs to be transmitted once at any one transmission time.
In any of the above technical solutions, preferably, the configuration unit 202 is further configured to: configuring a first bandwidth and a second bandwidth which are used in pairs in a carrier aggregation manner, wherein the first bandwidth and the second bandwidth are the same in size and different in frequency point, and both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, wherein the priority of the first bandwidth for the downlink transmission is higher than the priority of the first bandwidth for the uplink transmission, and the priority of the second bandwidth for the uplink transmission is higher than the priority of the second bandwidth for the downlink transmission.
In this technical solution, the first bandwidth and the second bandwidth used in pair may be bandwidths used in a conventional LTE FDD system, that is, the communication method provided by the present invention is compatible with the conventional LTE FDD system. And both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, so that the first bandwidth and the second bandwidth can be flexibly scheduled to transmit corresponding services according to actual communication scenes, such as the type of communication services, the uplink and downlink traffic and the like, the efficiency of frequency spectrums is favorably improved, and the problem of low frequency spectrum efficiency caused by the fact that only one bandwidth is used for uplink and the downlink of another user in the traditional LTE FDD system is solved.
In the above technical solution, further, the communication apparatus 200 further includes: a scheduling unit 206, configured to schedule the second bandwidth to assist downlink transmission when the first bandwidth is not enough to provide downlink transmission, and configured to schedule the first bandwidth to assist uplink transmission when the second bandwidth is not enough to provide uplink transmission.
in the technical scheme, when the first bandwidth is not enough to provide downlink transmission, the second bandwidth is scheduled to assist downlink transmission, and when the second bandwidth is not enough to provide uplink transmission, the first bandwidth is scheduled to assist uplink transmission, so that the first bandwidth and the second bandwidth can be flexibly scheduled to transmit corresponding services according to actual communication scenes, such as the type of communication services, the uplink and downlink traffic and the like, and the efficiency of a frequency spectrum is improved.
in the foregoing technical solution, the configuring unit 202 is further configured to configure the first bandwidth to a first cell for use, so as to form a downlink primary cell based on the first bandwidth, and configure the second bandwidth to a second cell for use, so as to form an uplink primary cell based on the second bandwidth; the communication apparatus 200 further includes: an indicating unit 208, configured to indicate the bandwidth value of the downlink primary cell through the system information of the downlink primary cell, and indicate the bandwidth value of the uplink primary cell through an RRC signaling by the downlink primary cell.
Specifically, the bandwidth value of the downlink primary cell is indicated by the MIB in the system information of the downlink primary cell.
In the above technical solution, further, a transmission period of the downlink reference signal in the downlink primary cell is less than or equal to a transmission period of the downlink reference signal in the uplink primary cell; and the transmission period of the uplink reference signal in the uplink main cell is less than or equal to the transmission period of the uplink reference signal in the downlink main cell.
In the technical scheme, because the priority of the downlink main cell for downlink is higher than that of the uplink main cell for downlink, and the reference signal is used for channel quality detection, the transmission period of the downlink reference signal in the downlink main cell is less than or equal to that of the downlink reference signal in the uplink main cell; in contrast, since the priority of the uplink main cell for uplink is higher than that of the downlink main cell for uplink, and the reference signal is used for channel quality detection, the transmission period of the uplink reference signal in the uplink main cell is less than or equal to that of the uplink reference signal in the downlink main cell.
in any of the above technical solutions, preferably, the configuration unit 202 is further configured to: configuring a pair of bandwidths used in a communication system into a first bandwidth and a second bandwidth which are used independently, wherein the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, the priority of the first bandwidth for downlink transmission is higher than or equal to the priority of uplink transmission, the priority of the second bandwidth for uplink transmission is higher than or equal to the priority of downlink transmission, and the first bandwidth and the second bandwidth are allocated to two different cells for use, wherein the two different cells respectively indicate own bandwidth values through own system information.
in the technical scheme, the paired bandwidths used in the communication system, that is, the bandwidths used in the conventional LTE FDD system, that is, the communication method provided by the present invention is compatible with the conventional LTE FDD system, and specifically, the paired bandwidths used in the conventional LTE TDD system can be allocated to different users in different cells for separate use.
In any of the above technical solutions, preferably, a downlink reference signal in the LTE system is multiplexed to identify a cell identity; or define a new reference signal for identifying the cell identity.
In the technical solution, when the downlink reference signal is used to identify the cell identity, the downlink reference signal in the LTE system may be multiplexed, including: PSS, SSS, CRS, CSI-RS, but the time domain resources and/or frequency domain resources of the transmission of these reference credits may vary, e.g. PSS/SSS are transmitted simultaneously but use different frequency domain resources, which may speed up the downlink synchronization process. Or a new reference signal may be defined, for example, the new reference signal does not need PSS/SSS, but a signal is used to indicate the cell identity, instead, the PSS and SSS are not needed to jointly indicate the cell identity, and the relative position of PSS/SSS is also not needed to indicate whether the FDD system or the TDD system, because the communication scheme provided by the present invention unifies the FDD system and the TDD system.
In an embodiment of the present invention, the communication apparatus 200 further includes: a transmission unit 210, configured to transmit, in a transmission period of a downlink reference signal or system information, the downlink reference signal or the system information through consecutive resource blocks in a frequency domain, or transmit, in a transmission period of the downlink reference signal or the system information, the downlink reference signal or the system information through resource blocks uniformly distributed over a whole bandwidth or uniformly distributed over a part of the bandwidth in the frequency domain; and the position of the resource block for transmitting the downlink reference signal or the system information is unchanged or regularly changed in different transmission periods.
Further, in order to unify the licensed spectrum and the unlicensed spectrum, there may be one transmission window in each transmission period of the downlink reference signal, where each transmission window includes multiple transmission times, and only needs to transmit once at any one transmission time.
In an embodiment of the present invention, the communication apparatus 200 further includes: a processing unit 212, configured to add identification information to the generated system information, where the identification information is used to indicate that the communication system adopts a dynamic subframe configuration.
In the technical scheme, the identification information is added into the generated system information, so that the communication system can be identified by adopting new subframe configuration. In particular, the identification may be made in the form of an IE.
It can be seen that the technical solution of the present invention is mainly directed to the technical problems that a larger uplink scheduling delay and a longer HARQ feedback delay are caused by a current fixed frame structure, a fixed frequency domain resource granularity and a time domain resource granularity, and a smaller carrier bandwidth cannot meet diversified requirements of services, and provides a technical solution suitable for a 5G communication scenario, and specifically includes the following aspects:
First, a frame structure adopted by 5G NR (New Radio, New Radio technology).
The frame structure adopted by the 5G NR may adopt a dynamic frame structure, specifically: the subframes in the radio frame start with downlink subframes by default, and the uplink subframes are determined and triggered by the base station through DCI scheduling signaling. The subframe in the radio frame may be one or more complete downlink subframes, or may be only a part of one complete downlink subframe, that is, only the first half of a subframe is used for downlink transmission.
On this basis, a part of subframes occurring periodically may also be configured semi-statically into uplink subframes, and these uplink subframes are used for sending uplink Reference signals SRS (i.e., Sounding Reference Signal) and/or uplink Scheduling requests (i.e., Scheduling Request) and/or Buffer status reports (i.e., Buffer status report) and/or random access preambles, etc.
in addition, in order to unify the licensed spectrum and the unlicensed spectrum, there is one transmission window in each period for the above uplink reference signal SRS and/or uplink scheduling request and/or buffer status report and/or random access preamble, and each transmission window includes multiple transmission times, and only needs to be transmitted once in any transmission time.
For paired bandwidths, the invention provides the following two use methods:
1. Paired bandwidths are used together.
Specifically, paired bandwidths in a conventional LTE FDD system may be multiplexed, or a new paired bandwidth may be configured. Wherein, the paired bandwidths have the same size but different frequency points.
The following is an example of multiplexing paired bandwidths in a conventional LTE FDD system:
Since one bandwidth of the conventional LTE FDD system is only used for downlink (referred to as LTE _ DL _ BW) and one bandwidth is only used for uplink (referred to as LTE _ UL _ BW). In NR, when a pair of bandwidths in a conventional LTE FDD system is multiplexed, a conventional bandwidth for downlink may be used for downlink and uplink, and a conventional bandwidth for uplink may also be used for uplink and downlink. There is priority in resource allocation, however, and the conventional bandwidth for uplink (i.e., LTE _ UL _ BW) is scheduled for downlink transmission only if the conventional bandwidth for downlink (i.e., LTE _ DL _ BW) is insufficient to provide downlink transmission. Likewise, the conventional bandwidth for downlink (i.e., LTE _ DL _ BW) is scheduled for uplink transmission only if the conventional bandwidth for uplink (i.e., LTE _ UL _ BW) is insufficient to provide uplink transmission.
In addition, when paired bandwidths are used together, the two bandwidths LTE _ DL _ BW and LTE _ UL _ BW can be configured to be used by users in a manner that two independent unpaired carriers are subjected to carrier aggregation. And configuring the traditional downlink carrier to a downlink PCell (Primary Cell), and configuring the traditional uplink carrier to an uplink PCell, i.e., separating uplink from downlink.
2. Paired bandwidths are not used together.
when the bandwidths are not used together, the paired bandwidths can be completely and independently distributed to different users for use, so that each user can only detect an uplink carrier frequency or a downlink carrier frequency in the paired bandwidths simultaneously, and the user uses a cell working on the carrier frequency as the uplink carrier frequency and the downlink carrier frequency on the carrier frequency, namely, the mode similar to the existing TDD mode.
Thirdly, aiming at the paired bandwidths, the bandwidth indication mode is as follows:
1. When paired bandwidths are used together, it is equivalent to allocating each bandwidth of the paired bandwidths to one cell (cell) for use, such as allocating LTE _ DL _ BW to cell #1 for use, allocating LTE _ UL _ BW to cell #2 for use, and cell #1 of LTE _ DL _ BW is a downlink PCell, then cell #1 indicates the value of LTE _ DL _ BW by MIB in system information. And LTE _ UL _ BW of Cell #2 is an uplink PCell, then downlink of Cell #2 is taken as SCell (Secondary Cell), and at this time, the bandwidth value of Cell #2 may be sent by downlink PCell, i.e., Cell #1, through RRC signaling.
2. When paired bandwidths are used independently, LTE _ DL _ BW and LTE _ UL _ BW are uplink and downlink of different cells, and then the two cells indicate their own bandwidths through their own MIB information. In this case, the priority of LTE _ UL _ BW used as uplink is higher than or equal to that used for downlink, and the priority of LTE _ DL _ BW used as downlink is higher than or equal to that used for uplink.
And fourthly, configuring the transmission time of the basic reference signal.
the transmission period of the basic reference signal is long, for example, 40ms/80ms/160ms, and it is only required to transmit the basic reference signal once per period, and the duration of each transmission is short (less than 1ms, or less than 1 subframe length). Meanwhile, in order to unify the authorized spectrum and the unauthorized spectrum, each period has one transmission window, and each transmission window comprises multiple times of transmission time, so long as the transmission time is once in any transmission time.
When LTE _ DL _ BW is downlink PCell and LTE _ UL _ BW is uplink PCell, the period of the downlink reference signal of cell #1 using LTE _ DL _ BW may be smaller than the period of the downlink reference signal of cell #2 using LTE _ UL _ BW because the latter has higher priority for uplink use; the period of the uplink reference signal of the cell #1 using LTE _ DL _ BW may be larger than that of the uplink reference signal of the cell #2 using LTE _ UL _ BW, because the former has higher priority for downlink use.
And fifthly, the type of the basic reference signal.
specifically, PSS/SSS/CRS/CSI-RS in legacy LTE may be multiplexed. It is also possible to define a new reference signal, for example, the new reference signal does not need to use PSS/SSS, but a signal is defined that can indicate the cell identity, and it is also not necessary that PSS and SSS jointly indicate the cell identity, nor the relative position of PSS/SSS is needed to indicate whether the communication system is an FDD system or a TDD system, because the technical solution of the present invention has unified the FDD and TDD structures.
sixthly, frequency domain configuration of the basic reference signals: the transmission bandwidth of the basic reference signal only needs to occupy a part of RBs (Resource Block).
Specifically, as shown in fig. 3, the RBs may be consecutive RBs, and the portion of consecutive RB positions may change regularly over time. Or the RBs may be discontinuous RBs, and the RBs are uniformly distributed over the whole bandwidth or over a part of the bandwidth (for example, some bandwidth needs to be free for the following service, then the part of the bandwidth does not transmit the basic reference signal, and therefore the RBs transmitting the reference signal are uniformly distributed over other bandwidths), in this case, as shown in fig. 4, the positions of the RBs may also be regularly changed with time.
The number, distribution position, and variation rule of the consecutive RBs or the non-consecutive RBs for transmitting the basic reference signal need to be stored in the terminal, so that the terminal searches for the reference signal at the corresponding position according to the stored information. In addition, since the paired carrier frequencies are already used separately, the reference signal of the cell #1 using LTE _ DL _ BW is transmitted on the bandwidth corresponding to LTE _ DL _ BW, and the reference signal of the cell #2 using LTE _ UL _ BW is transmitted on the bandwidth corresponding to LTE _ UL _ BW, so that compared with the user of LTE, the user requiring NR needs to search the frequency point used for the LTE _ DL _ BW in the downlink and also search the frequency point used for the LTE _ UL _ BW in the uplink.
Similarly to the reference signal, the MIB and other SIB (System Information Block) Information may be transmitted only in a part of the bandwidth, and the period is long (for example, may be 40ms or the duration occupied by 40 subframes). The MIB may also be transmitted as a basic reference signal in the manner shown in fig. 3 and 4. In addition, the transmission time and the occupied RB position of the MIB and other SIB information can be different, but the MIB and other SIB information do not occupy the whole bandwidth.
Eighthly, since the NR does not need to distinguish FDD from TDD, the IE (information element) of TDD-config contained in SIB1 in the original LTE system can be removed, and an IE is added to SIB1 to indicate NR, so that the user can know that the frame structure is not FDD or TDD, but is the frame structure of NR.
Therefore, the technical scheme of the invention not only provides a method for using paired carrier frequencies in 5G NR, but also provides bandwidth configuration under a new frame structure and configuration of downlink reference signals and the like in corresponding bandwidths, so that the paired carrier frequencies can be flexibly used and are forward compatible.
Fig. 5 shows a schematic block diagram of a communication device according to a second embodiment of the present invention.
As shown in fig. 5, a communication apparatus according to a second embodiment of the present invention includes: a processor 1, an output device 2 and a memory 3. In some embodiments of the invention, the processor 1, the output device 2 and the memory 3 may be connected by a bus 4 or other means, as exemplified by the connection by the bus 4 in fig. 5.
wherein, the memory 3 is used for storing a group of program codes, and the processor 1 calls the program codes stored in the memory 3 to execute the following operations:
Configuring a radio frame taking a downlink subframe as a starting subframe;
and sending a scheduling signaling on the downlink subframe through an output device 2 so as to configure an uplink subframe for uplink transmission in the radio frame.
As an alternative embodiment, the processor 1 calls the program code stored in the memory 3 and is further configured to perform the following operations:
configuring a periodic uplink subframe in the radio frame, wherein the periodic uplink subframe is used for at least transmitting an uplink reference signal and/or a random access preamble and/or an uplink scheduling request and/or a buffer status report.
As an alternative embodiment, the processor 1 calls the program code stored in the memory 3 and is further configured to perform the following operations:
Configuring a first bandwidth and a second bandwidth which are used in pairs in a carrier aggregation manner, wherein the first bandwidth and the second bandwidth are the same in size and different in frequency point, and both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, wherein the priority of the first bandwidth for the downlink transmission is higher than the priority of the first bandwidth for the uplink transmission, and the priority of the second bandwidth for the uplink transmission is higher than the priority of the second bandwidth for the downlink transmission.
As an alternative embodiment, the processor 1 calls the program code stored in the memory 3 and is further configured to perform the following operations:
Scheduling the second bandwidth to facilitate downlink transmission when the first bandwidth is insufficient to provide downlink transmission; and
Scheduling the first bandwidth to facilitate uplink transmission when the second bandwidth is insufficient to provide uplink transmission.
As an alternative embodiment, the processor 1 calls the program code stored in the memory 3 and is further configured to perform the following operations:
Configuring the first bandwidth to a first cell for use so as to form a downlink main cell based on the first bandwidth, and configuring the second bandwidth to a second cell for use so as to form an uplink main cell based on the second bandwidth;
And indicating the bandwidth value of the downlink main cell through the system information of the downlink main cell, and indicating the bandwidth value of the uplink main cell through RRC signaling by the downlink main cell.
As an alternative embodiment, the processor 1 calls the program code stored in the memory 3 and is further configured to perform the following operations:
Configuring a bandwidth used in a pair in a communication system into a first bandwidth and a second bandwidth which are used independently, wherein the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, the priority of the first bandwidth for downlink transmission is higher than or equal to the priority of uplink transmission, and the priority of the second bandwidth for uplink transmission is higher than or equal to the priority of downlink transmission;
And allocating the first bandwidth and the second bandwidth to two different cells for use, wherein the two different cells respectively indicate own bandwidth values through own system information.
as an alternative embodiment, the processor 1 calls the program code stored in the memory 3 and is further configured to perform the following operations:
multiplexing downlink reference signals in an LTE system to identify the cell identity; or
A new reference signal for identifying the cell identity is defined.
As an alternative embodiment, the processor 1 calls the program code stored in the memory 3 and is further configured to perform the following operations:
Transmitting a downlink reference signal or system information through continuous resource blocks in a frequency domain within one transmission period of the downlink reference signal or the system information; or in a transmission period of the downlink reference signal or the system information, the downlink reference signal or the system information is transmitted through resource blocks which are uniformly distributed on the whole bandwidth or on part of the bandwidth in a frequency domain;
And the position of the resource block for transmitting the downlink reference signal or the system information is unchanged or regularly changed in different transmission periods.
As an alternative embodiment, the processor 1 calls the program code stored in the memory 3 and is further configured to perform the following operations:
And adding identification information in the generated system information, wherein the identification information is used for indicating that the communication system adopts dynamic subframe configuration.
The steps in the method of the embodiment of the invention can be sequentially adjusted, combined and deleted according to actual needs.
The units in the communication device of the embodiment of the invention can be merged, divided and deleted according to actual needs.
it will be understood by those skilled in the art that all or part of the steps in the methods of the embodiments described above may be implemented by instructions associated with a program, which may be stored in a computer-readable storage medium, where the storage medium includes Read-Only Memory (ROM), Random Access Memory (RAM), Programmable Read-Only Memory (PROM), Erasable Programmable Read-Only Memory (EPROM), One-time Programmable Read-Only Memory (OTPROM), Electrically Erasable Programmable Read-Only Memory (EEPROM), compact disc-Read-Only Memory (CD-ROM), or other Memory, magnetic disk, magnetic tape, or magnetic tape, Or any other medium which can be used to carry or store data and which can be read by a computer.
The technical scheme of the invention is described in detail in the above with reference to the accompanying drawings, and the invention provides a new communication scheme, which can flexibly configure the position and the number of uplink subframes in a radio frame according to an actual communication scene, thereby improving the flexibility of resource scheduling and meeting the service requirement in a 5G communication scene.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (16)

1. a method of communication, comprising:
configuring a radio frame taking a downlink subframe as a starting subframe;
Sending a scheduling signaling on the downlink subframe to configure an uplink subframe for uplink transmission in the radio frame;
Configuring a first bandwidth and a second bandwidth which are used in pairs in a carrier aggregation manner, wherein the first bandwidth and the second bandwidth are the same in size and different in frequency point, and both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, wherein the priority of the first bandwidth for the downlink transmission is higher than the priority of the first bandwidth for the uplink transmission, and the priority of the second bandwidth for the uplink transmission is higher than the priority of the second bandwidth for the downlink transmission; or
configuring bandwidths used in pairs in a communication system as the first bandwidth and the second bandwidth which are used independently, wherein the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, the priority of the first bandwidth for downlink transmission is higher than or equal to the priority of uplink transmission, and the priority of the second bandwidth for uplink transmission is higher than or equal to the priority of downlink transmission; and
And allocating the first bandwidth and the second bandwidth to two different cells for use, wherein the two different cells respectively indicate own bandwidth values through own system information.
2. The communication method according to claim 1, further comprising:
Configuring a periodic uplink subframe in the radio frame, wherein the periodic uplink subframe is used for at least transmitting an uplink reference signal and/or a random access preamble and/or an uplink scheduling request and/or a buffer status report.
3. The communication method according to claim 1, further comprising:
Scheduling the second bandwidth to facilitate downlink transmission when the first bandwidth is insufficient to provide downlink transmission; and
Scheduling the first bandwidth to facilitate uplink transmission when the second bandwidth is insufficient to provide uplink transmission.
4. The communication method according to claim 1, further comprising:
Configuring the first bandwidth to a first cell for use so as to form a downlink main cell based on the first bandwidth, and configuring the second bandwidth to a second cell for use so as to form an uplink main cell based on the second bandwidth;
and indicating the bandwidth value of the downlink main cell through the system information of the downlink main cell, and indicating the bandwidth value of the uplink main cell through RRC signaling by the downlink main cell.
5. The communication method according to claim 4, wherein:
The transmission period of the downlink reference signal in the downlink main cell is less than or equal to the transmission period of the downlink reference signal in the uplink main cell; and
And the transmission period of the uplink reference signal in the uplink main cell is less than or equal to the transmission period of the uplink reference signal in the downlink main cell.
6. The communication method according to claim 1, further comprising:
Multiplexing downlink reference signals in an LTE system to identify the cell identity; or
A new reference signal for identifying the cell identity is defined.
7. The communication method according to claim 1, further comprising:
Transmitting a downlink reference signal or system information through continuous resource blocks in a frequency domain within one transmission period of the downlink reference signal or the system information; or in a transmission period of the downlink reference signal or the system information, the downlink reference signal or the system information is transmitted through resource blocks which are uniformly distributed on the whole bandwidth or on part of the bandwidth in a frequency domain;
And the position of the resource block for transmitting the downlink reference signal or the system information is unchanged or regularly changed in different transmission periods.
8. The communication method according to any one of claims 1 to 7, further comprising:
and adding identification information in the generated system information, wherein the identification information is used for indicating that the communication system adopts dynamic subframe configuration.
9. A communications apparatus, comprising:
A configuration unit, configured to configure a radio frame with a downlink subframe as a starting subframe;
A sending unit, configured to send a scheduling signaling on the downlink subframe, so as to configure an uplink subframe for uplink transmission in the radio frame;
The configuration unit is further configured to:
Configuring a first bandwidth and a second bandwidth which are used in pairs in a carrier aggregation manner, wherein the first bandwidth and the second bandwidth are the same in size and different in frequency point, and both the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, wherein the priority of the first bandwidth for the downlink transmission is higher than the priority of the first bandwidth for the uplink transmission, and the priority of the second bandwidth for the uplink transmission is higher than the priority of the second bandwidth for the downlink transmission; or
Configuring the bandwidths used in pairs in the communication system as the first bandwidth and the second bandwidth which are used independently, wherein the first bandwidth and the second bandwidth can be used for uplink transmission and downlink transmission, the priority of the first bandwidth for downlink transmission is higher than or equal to the priority of uplink transmission, the priority of the second bandwidth for uplink transmission is higher than or equal to the priority of downlink transmission, and the first bandwidth and the second bandwidth are allocated to two different cells for use, and the two different cells respectively indicate the bandwidth values thereof through own system information.
10. The communications apparatus of claim 9, wherein the configuration unit is further configured to:
Configuring a periodic uplink subframe in the radio frame, wherein the periodic uplink subframe is used for at least transmitting an uplink reference signal and/or a random access preamble and/or an uplink scheduling request and/or a buffer status report.
11. the communications device of claim 9, further comprising:
And a scheduling unit, configured to schedule the second bandwidth to assist downlink transmission when the first bandwidth is not enough to provide downlink transmission, and configured to schedule the first bandwidth to assist uplink transmission when the second bandwidth is not enough to provide uplink transmission.
12. The communications apparatus as claimed in claim 9, wherein the configuring unit is further configured to configure the first bandwidth for use by a first cell to form a downlink primary cell based on the first bandwidth, and configure the second bandwidth for use by a second cell to form an uplink primary cell based on the second bandwidth;
the communication apparatus further includes: and an indicating unit, configured to indicate the bandwidth value of the downlink primary cell through the system information of the downlink primary cell, and indicate the bandwidth value of the uplink primary cell through an RRC signaling by the downlink primary cell.
13. the communications device of claim 12, wherein:
The transmission period of the downlink reference signal in the downlink main cell is less than or equal to the transmission period of the downlink reference signal in the uplink main cell; and
And the transmission period of the uplink reference signal in the uplink main cell is less than or equal to the transmission period of the uplink reference signal in the downlink main cell.
14. The communication device of claim 9, wherein:
Multiplexing downlink reference signals in an LTE system to identify the cell identity; or
a new reference signal for identifying the cell identity is defined.
15. The communications device of claim 9, further comprising:
A transmission unit, configured to transmit, in a transmission period of a downlink reference signal or system information, the downlink reference signal or the system information through consecutive resource blocks in a frequency domain, or transmit, in a transmission period of the downlink reference signal or the system information, the downlink reference signal or the system information through resource blocks uniformly distributed over a whole bandwidth or uniformly distributed over a part of the bandwidth in the frequency domain; and the position of the resource block for transmitting the downlink reference signal or the system information is unchanged or regularly changed in different transmission periods.
16. the communication device according to any one of claims 9 to 15, further comprising:
and the processing unit is used for adding identification information in the generated system information, wherein the identification information is used for indicating that the communication system adopts dynamic subframe configuration.
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