CN113194547A - Channel occupation time duration indication method, terminal and network equipment - Google Patents
Channel occupation time duration indication method, terminal and network equipment Download PDFInfo
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- CN113194547A CN113194547A CN202010038330.5A CN202010038330A CN113194547A CN 113194547 A CN113194547 A CN 113194547A CN 202010038330 A CN202010038330 A CN 202010038330A CN 113194547 A CN113194547 A CN 113194547A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
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- Computer Networks & Wireless Communication (AREA)
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Abstract
The embodiment of the invention provides a channel occupation time length indication method, a terminal and network equipment, wherein the method comprises the following steps: receiving slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N in a last slot of a channel occupancy duration COT that does not belong to the COT. The embodiment of the invention indicates the OFDM symbol which does not belong to the COT in the last time slot of the COT by adding a new SFI state, can flexibly indicate the end position of the COT, improves the resource utilization and saves certain power consumption for the UE.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method, a terminal, and a network device for indicating a duration of a channel occupancy.
Background
The 3GPP introduces Licensed Assisted Access (LAA) and enhanced licensed Assisted Access (enhanced LAA) technologies in Release 13(Release-13, R-13) and Release 14(Release-14, R-14), respectively, and utilizes the unlicensed spectrum resources to the maximum extent possible with the assistance of the licensed spectrum. In order to ensure fairness, devices transmitting in the unlicensed frequency band generally need to comply with Listen Before Talk (LBT) rules, that is, before sending a signal, a channel needs to be listened first, and transmission is started when the channel is idle and channel occupation time is obtained.
In LTE-LAA, the subframe configuration of the current subframe and the next subframe is indicated by PDCCH of CRC scrambled by CC-RNTI. If the UE detects the PDCCH of the CRC scrambled by the CC-RNTI in the Subframe n-1 or the Subframe n of the LAA Scell, the UE may assume that the number of OFDM symbols Occupied in the Subframe n is known according to the "Subframe configuration for LAA" field in the DCI detected in the Subframe n-1 or the Subframe n, and thus the end position of the Channel Occupied Time (COT) can be determined. For eLAA, the subframe configuration of uplink and downlink (UL/DL) can also be indicated by PDCCH of CRC scrambled by CC-RNTI. The newly added slot format indication in Release 15(Release-15, R-15) of 3GPP can indicate the OFDM symbols occupied by uplink and downlink, and the existing 256 SFI states can already cover most UL/DL configurations.
Since the minimum granularity of the slot format indication of the NR grant band is one slot, the end position of the indicated slot format combination must be a slot boundary, and DCI format 2_0 represents one combination of a group of slot format combinations configured by a high parameter, the indicated combination corresponding to a slot format of an integer number of slots. However, the COT ending time slot is not necessarily a complete time slot, and if the existing time slot format indication scheme is used, the UE needs to continue to monitor the channel when the actual COT has ended, so that the UE resource utilization rate is low and unnecessary power consumption is caused.
Disclosure of Invention
Embodiments of the present invention provide a channel occupation duration indication method, a terminal, and a network device, which overcome the above problems or at least partially solve the above problems.
In a first aspect, an embodiment of the present invention provides a method for indicating a duration of channel occupancy, where the method is applied to a terminal, and includes:
receiving slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N in a last slot of a channel occupancy duration COT that does not belong to the COT.
Wherein, after receiving the time slot format information SFI, the method further comprises:
if the OFDM symbol in the state of N is detected, the COT is known to be finished, and the monitoring of the downlink channel is not continued.
In a second aspect, an embodiment of the present invention provides a method for indicating a duration of channel occupancy, which is applied to a network device, and includes:
transmitting slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT.
In a third aspect, an embodiment of the present invention provides a terminal, including:
a receiving module, configured to receive slot format information SFI, where the slot format information SFI indicates whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X for which D or U is not determined, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT.
Wherein, still include:
and the detection module is used for knowing that COT is finished and not continuing to monitor the downlink channel if the OFDM symbol in the state of N is detected.
In a fourth aspect, an embodiment of the present invention provides a network device, including:
a sending module, configured to send time slot format information SFI, where the time slot format information SFI indicates whether each of a plurality of resources included in a time slot is a downlink D resource, an uplink U resource, a third resource X for which D or U is not determined, or a fourth resource N not belonging to a channel occupancy duration COT in a last time slot of the COT.
In a fifth aspect, an embodiment of the present invention provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the program to implement the steps of the channel occupancy duration indication method as provided in the first aspect or the second aspect.
In a sixth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the channel occupancy duration indication method as provided in the first aspect or the second aspect.
According to the channel occupation duration indication method, the terminal and the network device, the new SFI state is added, the OFDM symbols which do not belong to the COT in the last time slot of the COT are indicated, the end position of the COT can be flexibly indicated, the resource utilization is improved, and certain power consumption is saved for the UE.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a diagram illustrating an example of an SFI format provided by an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for indicating duration of channel occupancy according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention;
fig. 4 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a channel occupation time length indicating method, which is applied to a terminal and comprises the following steps:
receiving slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N in a last slot of a channel occupancy duration COT that does not belong to the COT.
Specifically, the minimum granularity of the slot format indication of the NR grant band is one slot, and the SFI (slot format information) may indicate OFDM symbols of three different states: d (downlink), U (uplink), and X (flexible). The COT end position of the NR-U cannot be guaranteed to be aligned with the slot end time, i.e. the last slot may not be a complete slot. Therefore, in order to continue using the existing SFI scheme, an OFDM symbol state needs to be newly added: n (not in COT) for indicating OFDM symbols in the last slot of the COT which do not belong to the COT. Fig. 1 is a diagram illustrating an SFI format according to an embodiment of the present invention.
By combining the SFI format, the end position of the COT can be flexibly indicated, and the resource utilization rate is improved.
Fig. 2 is a schematic flow chart of a method for indicating duration of channel occupancy according to an embodiment of the present invention, including:
Specifically, after receiving the time slot format information SFI, the terminal knows that the COT has ended and does not continue to monitor the downlink channel if detecting the OFDM symbol in the state of N, which can save a certain power consumption for the UE.
The method for indicating the duration of the channel occupancy provided by the embodiment of the invention indicates the OFDM symbol which does not belong to the COT in the last time slot of the COT by adding a new SFI state, can flexibly indicate the end position of the COT, improve the resource utilization and save certain power consumption for the UE.
The embodiment of the invention provides a channel occupation time length indicating method, which is applied to network equipment and comprises the following steps:
transmitting slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT.
Specifically, the network device transmits slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X for which D or U is not determined, or a fourth resource N in the last slot of a channel occupancy duration COT, which does not belong to the COT. It can be understood that SFI indicates OFDM symbols in four different states: d (downlink), U (uplink), X (flexible), and N (not in COT). After receiving the time slot format information SFI, the terminal does not continue to monitor the downlink channel if detecting the OFDM symbol in the N state, which can save a certain power consumption for the UE.
The method for indicating the channel occupation time provided by the embodiment of the invention indicates the OFDM symbol which does not belong to the COT in the last time slot of the COT by adding a new SFI state, can flexibly indicate the end position of the COT, improve the resource utilization and save certain power consumption for the UE.
Another embodiment of the present invention further provides a terminal, including:
a receiving module, configured to receive slot format information SFI, where the slot format information SFI indicates whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X for which D or U is not determined, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT.
Specifically, the minimum granularity of the slot format indication of the NR grant band is one slot, and the SFI (slot format information) may indicate OFDM symbols of three different states: d (downlink), U (uplink), and X (flexible). The COT end position of the NR-U cannot be guaranteed to be aligned with the slot end time, i.e. the last slot may not be a complete slot. Therefore, in order to continue using the existing SFI scheme, an OFDM symbol state needs to be newly added: n (not in COT) for indicating OFDM symbols in the last slot of the COT which do not belong to the COT. And the terminal receives the new time slot format information SFI.
The terminal provided by the embodiment of the invention indicates the OFDM symbol which does not belong to the COT in the last time slot of the COT by adding a new SFI state, can flexibly indicate the end position of the COT, improves the resource utilization and saves certain power consumption for the UE.
Fig. 3 is a schematic structural diagram of a terminal according to an embodiment of the present invention, including: a receiving module 310 and a detecting module 320, wherein,
a receiving module 310, configured to receive slot format information SFI, which indicates whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X where D or U is not determined, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT;
the detecting module 320 is configured to, if an OFDM symbol in the state of N is detected, know that the COT has ended, and no longer continue to monitor the downlink channel.
Specifically, after the receiving module 310 receives the time slot format information SFI, if the detecting module 320 detects an OFDM symbol in the state of N, it knows that the COT is ended, and does not continue to monitor the downlink channel, so that a certain power consumption can be saved for the UE.
Another embodiment of the present invention further provides a network device, including:
a sending module, configured to send time slot format information SFI, where the time slot format information SFI indicates whether each of a plurality of resources included in a time slot is a downlink D resource, an uplink U resource, a third resource X for which D or U is not determined, or a fourth resource N not belonging to a channel occupancy duration COT in a last time slot of the COT.
Specifically, the transmitting module transmits slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X for which D or U is not determined, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT. It can be understood that SFI indicates OFDM symbols in four different states: d (downlink), U (uplink), X (flexible), and N (not in COT). After receiving the time slot format information SFI, the terminal does not continue to monitor the downlink channel if detecting the OFDM symbol in the N state, which can save a certain power consumption for the UE.
The network device provided by the embodiment of the invention indicates the OFDM symbol which does not belong to the COT in the last time slot of the COT by adding a new SFI state, can flexibly indicate the end position of the COT, improves the resource utilization and saves certain power consumption for the UE.
Fig. 4 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 4, the electronic device may include: a processor (processor)410, a communication Interface 420, a memory (memory)430 and a communication bus 440, wherein the processor 410, the communication Interface 420 and the memory 430 are communicated with each other via the communication bus 440. The processor 410 may invoke a computer program stored on the memory 430 and executable on the processor 410 to perform the channel occupancy duration indication methods provided by the above-described method embodiments, including, for example: receiving slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N in a last slot of a channel occupancy duration COT that does not belong to the COT.
The processor 410 may invoke a computer program stored on the memory 430 and executable on the processor 410 to perform the channel occupancy duration indication methods provided by the above-described method embodiments, including, for example: transmitting slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT.
In addition, the logic instructions in the memory 430 may be implemented in the form of software functional units and stored in a computer readable storage medium when the software functional units are sold or used as independent products. Based on such understanding, the technical solutions of the embodiments of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
An embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for indicating duration of occupied channel provided in the foregoing method embodiments, for example, the method includes: receiving slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N in a last slot of a channel occupancy duration COT that does not belong to the COT.
An embodiment of the present invention further provides a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for indicating duration of occupied channel provided in the foregoing method embodiments, for example, the method includes: transmitting slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A channel occupation time length indication method is applied to a terminal and is characterized by comprising the following steps:
receiving slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N in a last slot of a channel occupancy duration COT that does not belong to the COT.
2. The method of claim 1, wherein after receiving the time slot format information SFI, the method further comprises:
if the OFDM symbol in the state of N is detected, the COT is known to be finished, and the monitoring of the downlink channel is not continued.
3. A channel occupation time length indication method is applied to network equipment and is characterized by comprising the following steps:
transmitting slot format information SFI indicating whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X of undetermined D or U, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT.
4. A terminal, comprising:
a receiving module, configured to receive slot format information SFI, where the slot format information SFI indicates whether each of a plurality of resources included in a slot is a downlink D resource, an uplink U resource, a third resource X for which D or U is not determined, or a fourth resource N not belonging to a channel occupancy duration COT in a last slot of the COT.
5. The terminal of claim 4, further comprising:
and the detection module is used for knowing that COT is finished and not continuing to monitor the downlink channel if the OFDM symbol in the state of N is detected.
6. A network device, comprising:
a sending module, configured to send time slot format information SFI, where the time slot format information SFI indicates whether each of a plurality of resources included in a time slot is a downlink D resource, an uplink U resource, a third resource X for which D or U is not determined, or a fourth resource N not belonging to a channel occupancy duration COT in a last time slot of the COT.
7. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor executes the program to implement the steps of the channel occupancy duration indication method according to any one of claims 1 to 3.
8. A non-transitory computer readable storage medium, having stored thereon a computer program, which, when being executed by a processor, carries out the steps of the method for indicating a duration of channel occupancy according to any one of claims 1 to 3.
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| CN202010038330.5A CN113194547A (en) | 2020-01-14 | 2020-01-14 | Channel occupation time duration indication method, terminal and network equipment |
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| CN202010038330.5A CN113194547A (en) | 2020-01-14 | 2020-01-14 | Channel occupation time duration indication method, terminal and network equipment |
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| CN113194547A true CN113194547A (en) | 2021-07-30 |
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| CN202010038330.5A Withdrawn CN113194547A (en) | 2020-01-14 | 2020-01-14 | Channel occupation time duration indication method, terminal and network equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023044898A1 (en) * | 2021-09-27 | 2023-03-30 | 北京小米移动软件有限公司 | Method and apparatus for receiving and sending physical downlink shared channel, and medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474313A (en) * | 2017-09-08 | 2019-03-15 | 华硕电脑股份有限公司 | Method and apparatus for channel usage in unlicensed spectrum considering beamformed transmissions |
| CN109496457A (en) * | 2018-10-25 | 2019-03-19 | 北京小米移动软件有限公司 | Method of reseptance, sending method, device and the storage medium of DCI |
| CN111865537A (en) * | 2019-04-30 | 2020-10-30 | 华为技术有限公司 | Communication method and communication device |
| CN112788753A (en) * | 2019-11-07 | 2021-05-11 | 维沃移动通信有限公司 | Transmission method and device of GC-PDCCH |
-
2020
- 2020-01-14 CN CN202010038330.5A patent/CN113194547A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109474313A (en) * | 2017-09-08 | 2019-03-15 | 华硕电脑股份有限公司 | Method and apparatus for channel usage in unlicensed spectrum considering beamformed transmissions |
| CN109496457A (en) * | 2018-10-25 | 2019-03-19 | 北京小米移动软件有限公司 | Method of reseptance, sending method, device and the storage medium of DCI |
| CN111865537A (en) * | 2019-04-30 | 2020-10-30 | 华为技术有限公司 | Communication method and communication device |
| CN112788753A (en) * | 2019-11-07 | 2021-05-11 | 维沃移动通信有限公司 | Transmission method and device of GC-PDCCH |
Non-Patent Citations (10)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023044898A1 (en) * | 2021-09-27 | 2023-03-30 | 北京小米移动软件有限公司 | Method and apparatus for receiving and sending physical downlink shared channel, and medium |
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Application publication date: 20210730 |