CN114080046A - Channel occupation indication method, device and related equipment - Google Patents

Channel occupation indication method, device and related equipment Download PDF

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Publication number
CN114080046A
CN114080046A CN202010814053.2A CN202010814053A CN114080046A CN 114080046 A CN114080046 A CN 114080046A CN 202010814053 A CN202010814053 A CN 202010814053A CN 114080046 A CN114080046 A CN 114080046A
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fixed frame
frame period
information
channel
channel occupation
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周欢
沈兴亚
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Beijing Ziguang Zhanrui Communication Technology Co Ltd
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Priority to CN202010814053.2A priority Critical patent/CN114080046A/en
Priority to PCT/CN2021/109053 priority patent/WO2022033315A1/en
Publication of CN114080046A publication Critical patent/CN114080046A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The embodiment of the application discloses a channel occupation indication method, a device and related equipment. The channel occupation indicating method comprises the following steps: the network equipment determines channel occupation indication information and sends the channel occupation indication information to the terminal equipment, wherein the channel occupation indication information is used for indicating the starting position of the terminal equipment periodically initiating channel occupation and the fixed frame period occupied by the terminal equipment. When the terminal equipment needs to send the temporary data, the channel occupation is initiated according to the channel occupation indication information, and then the temporary data is sent.

Description

Channel occupation indication method, device and related equipment
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating channel occupancy, and a related device.
Background
In order to fairly and efficiently utilize the unlicensed spectrum and to increase the data transmission rate of NR systems, the 3GPP standards organization will deploy NR networks on the unlicensed spectrum.
Currently, a terminal device may initiate channel occupation within one period of an unlicensed frequency band by using a channel access type of a Load-Based Equipment (LBE), so as to transmit specific data. Wherein, one period of the unlicensed frequency band is specified by the base station for the terminal device according to the specific data. However, in general, the base station does not know whether or not the terminal device has data to transmit, and cannot allocate resources to the terminal device.
Therefore, for the terminal device, if there is temporary data to be transmitted, there is no channel occupation time, and the temporary data cannot be transmitted.
Disclosure of Invention
The embodiment of the application provides a channel occupation indication method, a device and related equipment, and when the terminal equipment sends temporary data, the terminal equipment initiates channel occupation according to the channel occupation indication method, so as to send the temporary data.
In a first aspect, an embodiment of the present application provides a method for indicating channel occupancy, where the method includes: the network equipment determines channel occupation indication information and sends the channel occupation indication information to the terminal equipment, wherein the channel occupation indication information is used for indicating the starting position of the terminal equipment periodically initiating channel occupation and the fixed frame period occupied by the terminal equipment.
Therefore, the channel occupation indication method is beneficial to initiating channel occupation according to the channel occupation indication information when the terminal equipment needs to send the temporary data, and further sending the temporary data.
In one implementation, the starting position where the terminal device periodically initiates channel occupation is determined according to offset information; and the fixed frame period occupied by the terminal equipment is determined according to the duration information.
In an implementation manner, the offset information includes first offset information, the duration information includes first duration information, and a specific implementation manner of the network device determining the channel occupancy indication information is as follows: the network device determines a first target position and a first target fixed frame period in the channel occupation indication information, wherein the first target position is determined according to the first offset information, and the first target fixed frame period is determined according to the first time length information.
In one implementation, the offset information further includes second offset information, the duration information further includes second duration information, the network device further determines a second target position in the first target fixed frame period and a second target fixed frame period included in the first target fixed frame period, the second target position is determined according to the second offset information, and the second target fixed frame period is determined according to the second duration information.
In one implementation, the starting position where the terminal device periodically initiates channel occupation and the fixed frame period occupied by the terminal device are determined according to a bitmap.
In one implementation, the bitmap includes a first bitmap, and the specific implementation manner of the network device determining the channel occupancy indication information is as follows: the network device determines a first target position and a first target fixed frame period in the channel occupancy indication information, where the first target position and the first target fixed frame period are determined according to the first bit map.
In one implementation, the bitmap further includes a second bitmap, and the network device further determines a second target position in the first target fixed frame period and a second target fixed frame period included in the first target fixed frame period, where the second target position and the second target fixed frame period are determined according to the second bitmap.
In one implementation manner, before the network device determines the channel occupancy indication information, the following implementation manners are further included: the network equipment determines uplink configuration information of the terminal equipment, wherein the uplink configuration information is used for indicating that the terminal equipment has the capacity of initiating channel occupation; and the network equipment sends the uplink configuration information.
In one implementation, the uplink configuration information includes a semi-statically configured uplink, a dynamically scheduled uplink, and an uplink transmission information scheduled by a physical downlink control channel; the physical downlink control channel carries downlink control information DCI, and the DCI is used for indicating terminal equipment/network equipment initiating channel occupation.
In one implementation, the channel occupation indication information is further used to indicate a starting position where the terminal device periodically initiates the next channel occupation and a fixed frame period occupied by the terminal device.
In a second aspect, an embodiment of the present application provides a channel occupancy indicating device, where the channel occupancy indicating device includes:
a determining unit, configured to determine channel occupation indication information, where the channel occupation indication information is used to indicate an initial position where a terminal device periodically initiates channel occupation and a fixed frame period occupied by the terminal device;
and the sending unit is used for sending the channel occupation indication information to the terminal equipment.
In a third aspect, an embodiment of the present application provides a network device, where the network device includes:
a memory for storing a computer program;
a processor invoking a computer program for performing the following operations:
determining channel occupation indication information, wherein the channel occupation indication information is used for indicating an initial position of a terminal device for periodically initiating channel occupation and a fixed frame period occupied by the terminal device;
and sending the channel occupation indication information to the terminal equipment.
In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions for the user equipment, which includes a program for executing the method according to any one of the first aspect.
In the embodiment of the application, the network device determines and sends the channel occupation indication information, and the channel occupation indication information is used for indicating the starting position of the terminal device for periodically initiating channel occupation and the fixed frame period occupied by the terminal device. Therefore, when temporary data needs to be sent, the terminal equipment can determine the initial position of periodically initiating the channel occupation and the fixed frame period occupied by the terminal equipment according to the channel occupation indication information, and further the terminal equipment is favorable for sending the temporary data.
Drawings
Fig. 1 is a schematic system structure diagram of a communication system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a frame structure according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a fixed frame period according to an embodiment of the present application;
fig. 4 is a flowchart illustrating a channel occupancy indication method according to an embodiment of the present application;
fig. 5a is a schematic structural diagram of another fixed frame period according to an embodiment of the present application;
fig. 5b is a schematic structural diagram of a bitmap provided in an embodiment of the present application;
fig. 6 is a flowchart illustrating another channel occupation indication method according to an embodiment of the present application;
fig. 7a is a schematic structural diagram of a first fixed frame period and a second fixed frame period according to an embodiment of the present application;
fig. 7b is a schematic structural diagram of another first fixed frame period and a second fixed frame period according to the embodiment of the present application;
fig. 7c is a schematic structural diagram of a first bit bitmap according to an embodiment of the present application;
fig. 7d is a schematic structural diagram of a second bitmap according to an embodiment of the present application;
fig. 8 is a schematic structural diagram of channel occupancy indication information according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a channel occupancy indicating device according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described below with reference to the drawings.
The communication system related to the present application is shown in fig. 1, and the communication system may include, but is not limited to, one network device and one terminal device, the number and form of the devices shown in fig. 1 are used for example and do not constitute a limitation to the embodiments of the present application, and the communication system may include more than one network device and more than one terminal device in practical applications. The communication system shown in fig. 1 is illustrated by taking a network device 101 and a terminal device 102 as an example, and the network device 101 may send channel occupancy indication information to the terminal device 102.
In this application, a terminal device can also be called a terminal, user equipment, access terminal, subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, user agent, or user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), and the like.
In this application, the network device is a physical entity connected to a network, the network device may be a base station or a core network unit, the base station may be a 5G base station (gNB), and the network device may also be a network device in a subsequent evolved communication system.
At present, if a terminal device needs to send a specific data, it may send a request message for requesting channel occupation to a network device, so that the network device indicates a channel occupation duration capable of sending the specific data to the terminal device according to the request message, and then the network device initiates channel occupation to send the specific data. However, if the terminal device needs to transmit a piece of temporary data, the temporary data is bursty data, and there is no channel occupation duration allocated in advance by the base station, and the temporary data cannot be transmitted.
In order to solve the above problem, the present application provides a channel occupancy indication method, in which a network device determines channel occupancy indication information and sends the channel occupancy indication information to a terminal device. Therefore, when the terminal equipment needs to send the temporary data, the initial position of periodically initiating the channel occupation and the fixed frame period occupied by the terminal equipment can be determined according to the channel occupation indication information, and further, the terminal equipment can send the temporary data.
The technical scheme provided by the application can be applied to various communication systems, such as a global system for mobile communication, an LTE frequency division duplex system, an LTE time division duplex system, a universal mobile communication system, a new wireless system, a communication system of subsequent evolution and the like.
To facilitate an understanding of the embodiments disclosed herein, some concepts related to the embodiments of the present application will be first explained. The description of these concepts includes, but is not limited to, the following.
And (3) frame structure: as shown in fig. 2, a frame structure of a 3GPP NR (New Radio) system includes a Radio frame having a time domain length of 10ms, and each Radio frame is divided into 10 subframes having a time domain length of 1 ms.
Frame Based Equipment (FBE): the device receives or transmits data in a periodic structure, and the period of the periodic structure is a fixed frame period (ffp).
Listen before Talk (Listen-Bform-Talk, LBT): is a technique for avoiding interference between a plurality of wireless communication systems using the same frequency band. The device using LBT technology must first monitor whether the channel is occupied before sending data, and if the channel is idle within a certain time, the device can occupy the channel and start to transmit data.
Listen before talk (FBE LBT) based on frame device: setting a fixed frame period, performing Channel detection once in each fixed frame period, for example, performing CCA (Clear Channel Assessment) detection in each CCA detection time, and if the Channel state is detected to be idle, the device may occupy the Channel and start transmission; if the channel state is detected to be non-idle, the device cannot occupy the channel in the fixed frame period until the device continues to detect until the next channel detection period. For example, as shown in fig. 3, fig. 3 is a schematic structural diagram of two fixed frame periods, which are a fixed frame period a and a fixed frame period B, respectively, where a device may perform CCA detection at an initial position of each fixed frame period, and if it is detected that the fixed frame period a is an idle channel, the device may occupy a channel in the fixed frame period a, where the fixed frame period includes a channel occupancy duration (COT) and an idle period (idle period), the channel occupancy duration is a duration portion in which channel occupancy can be initiated, the idle period is a duration portion in which channel occupancy cannot be initiated, the maximum channel occupancy duration is a preset multiple of the fixed frame period, and the preset multiple is less than 1, for example, the preset multiple is 0.95, that is, the maximum channel occupancy duration is 0.95 times of the fixed frame period. Due to the existence of idle periods in the fixed frame period, the device can only occupy the channel within the channel occupation duration to transmit data.
Based on the above description, an embodiment of the present application provides a channel occupancy indication method 10 as shown in fig. 4, where the method may include S401 to S402:
s401: the network equipment determines channel occupation indication information, wherein the channel occupation indication information is used for indicating an initial position of periodically initiating channel occupation by the terminal equipment and a fixed frame period occupied by the terminal equipment;
s402: and the network equipment sends the channel occupation indication information to the terminal equipment.
In one implementation, the starting position where the terminal device periodically initiates channel occupation is determined according to the offset information; the fixed frame period occupied by the terminal equipment is determined according to the duration information. The bias information comprises a bias value, the duration information comprises a duration value, and the bias value and the duration value are determined by the network equipment through an RIV algorithm. Specifically, the following formula can be used to determine:
ceil(log2(N*(N+1)/2))，
wherein N is determined by a preset period, which is set in advance for the network device. For example, if the network device determines that the preset period is T and determines that the preset period T is divided into a plurality of fixed frame periods Tx, N is T/Tx. It can be understood that the offset value in the offset information and the time length value in the time length information may also be calculated by other formulas in the RIV algorithm, and the embodiment of the present application is not limited.
For example, as shown in fig. 5a, the preset period is 20ms, which includes two radio frames, i.e., a subframe 0 and a subframe 1, and the preset period is divided into two fixed frame periods with a duration of 10ms, i.e., fixed frame periods corresponding to a number 1 and a number 2 in fig. 5 a. The network device determines, through the RIV algorithm, that the offset value in the offset information is 0 and the duration in the duration information is 1, and then the network device determines that the initial position of the channel occupation indication information used for indicating that the terminal device periodically initiates channel occupation is the initial position of the fixed frame period corresponding to the number 1 in fig. 5a and that the fixed frame period occupied by the terminal device is the fixed frame period corresponding to the number 1 in fig. 5 a.
For another example, the preset period and the fixed frame period are also shown in fig. 5a, the network device determines, through the RIV algorithm, that the offset value in the offset information is 0, and the duration in the duration information is 2, then the network device determines that the starting position of the channel occupancy indication information for indicating that the terminal device periodically initiates channel occupancy is the starting position of the fixed frame period corresponding to the number 1 in fig. 5a, and the fixed frame period occupied by the terminal device is the fixed frame period corresponding to the numbers 1 and 2 in fig. 5a, but because there is a period of idle in each fixed frame period, after the terminal device initiates channel occupancy within the channel occupancy duration included in the fixed frame period corresponding to the number 1 in fig. 5a, when the fixed frame period corresponding to the number 2 in fig. 5a arrives, channel occupancy is initiated within the channel occupancy duration included in the fixed frame period corresponding to the number 2, that is, the terminal device initiates channel occupation discontinuously in two fixed frame periods, and initiates channel occupation respectively.
In one implementation, the starting position where the terminal device periodically initiates channel occupation and the fixed frame period occupied by the terminal device are determined according to a bitmap. Wherein the length value of the bitmap is determined according to a preset period and a fixed frame period. For example, the preset period is T, the fixed frame period is Tx, and the length of the bitmap is N ═ T/Tx, that is, the bitmap includes N bits.
The initial position occupied by the terminal equipment periodically initiating the channel can be the initial position of a fixed frame period corresponding to an index 1 in the bitmap, and the fixed frame period occupied by the terminal equipment can be the fixed frame period corresponding to the index 1 in the bitmap; optionally, the starting position occupied by the terminal device periodically initiating the channel may be the starting position of the fixed frame period corresponding to the index of 0 in the bitmap, and the fixed frame period occupied by the terminal device may be the fixed frame period corresponding to the index of 0 in the bitmap.
For example, the preset period and the fixed frame period are also shown in fig. 5a, the bitmap determined by the network device is shown in fig. 5b, the index value of the first bit is 1, the index value of the second bit is 0, if the starting position where the terminal device periodically initiates channel occupation is the starting position of the fixed frame period corresponding to the index 1 in the bitmap, and the fixed frame period occupied by the terminal device is the fixed frame period corresponding to the index 1 in the bitmap, the channel occupation indication information determined by the network device is used to indicate that the starting position where the terminal device periodically initiates channel occupation is the starting position of the fixed frame period corresponding to the number 1 in fig. 5a, and the fixed frame period occupied by the terminal device is the fixed frame period corresponding to the number 1 in fig. 5 a.
In the embodiment of the application, the network device determines and sends the initial position for indicating the terminal device to periodically initiate channel occupation and the channel occupation indication information of the fixed frame period occupied by the terminal device, so that when the terminal device determines that temporary data needs to be transmitted, the CCA detection can be performed at the initial position of the fixed frame period indicated by the channel occupation indication information, if the channel is detected to be idle, the channel is occupied and the transmission of the temporary data is started within the channel occupation duration within the fixed frame period indicated by the channel occupation indication information, and the transmission of the temporary data by the terminal device is realized.
If the network device divides the fixed frame period in the channel occupancy indication information method 10 into fixed frame periods that can be occupied by a plurality of terminal devices, another channel occupancy indication method 20 shown in fig. 6 is proposed in the embodiment of the present application, and the method may include S601-S603:
s601: the network equipment determines a first target position and a first target fixed frame period in the channel occupation indication information;
s602: the network equipment determines a second target position in the first target fixed frame period and a second target fixed frame period included in the first target fixed frame period;
s603: and the network equipment sends the channel occupation indication information to the terminal equipment.
In one embodiment, in S601, the offset information includes first offset information, the duration information includes first duration information, the first target location is determined according to the first offset information, and the first target fixed frame period is determined according to the first duration information. The network device divides the preset period T into a plurality of first fixed frame periods Tx, the first target fixed frame period is any one of the plurality of first fixed frame periods, and the first target fixed frame period is a fixed frame period in which the terminal device performs channel occupation within the first fixed frame period.
The first offset value in the first offset information and the first duration value in the first duration information are determined by the network device through the RIV algorithm. Specifically, the following formula can be used to determine:
ceil(log2(N1*(N1+1)/2))，
where N1 is determined by a preset period and a first fixed frame period, the preset period being set in advance for the network device. For example, if the network device determines that the preset period is T and determines that the preset period T is divided into a plurality of first fixed frame periods Tx, then N1 is T/Tx. It can be understood that the first offset value in the first offset information and the first duration value in the first duration information may also be calculated by other formulas in the RIV algorithm, and the embodiment of the present application is not limited.
For example, as shown in fig. 7a, the preset period is 20ms, which includes two wireless frames, namely, a subframe 0 and a subframe 1, the preset period is divided into two first fixed frame periods with a duration of 10ms, which are respectively fixed frame periods corresponding to the number 1 and the number 2 in fig. 7a, and each first fixed frame period is further divided into two second fixed frame periods, which are respectively fixed frame periods corresponding to the letters a, b, c, and d in fig. 7 a. The network device determines that a first offset value in the first offset information is 0, and a first duration in the first duration information is 1, then the channel occupancy indication information determined by the network device is used to indicate that the terminal device periodically initiates channel occupancy at a start position of a first fixed frame period corresponding to the number 1 in fig. 7a, and a first target fixed frame period occupied by the terminal device is a first fixed frame period corresponding to the number 1 in fig. 7 a.
In one embodiment, in S602, the second target position is determined according to the second offset information, and the second target fixed frame period is determined according to the second duration information. The network device divides the first fixed frame period in S601 into a plurality of second fixed frame periods, where the second target fixed frame period is any one of the plurality of second fixed frame periods, and the second target fixed frame period is a fixed frame period in which the terminal device performs channel occupation within the second fixed frame period.
And the second offset value in the second offset information and the second time length value in the second time length information are determined by the network equipment through an RIV algorithm. Specifically, the following formula can be used to determine:
ceil(log2(N2*(N2+1)/2))，
where N2 is determined by the first fixed frame period and the second fixed frame period. For example, the network device determines a first fixed frame period Tx, which is divided into a plurality of second fixed frame periods TUExThen N2 equals Tx/TUEx. It can be understood that the second offset value in the second offset information and the second duration value in the second duration information may also be calculated by other formulas in the RIV algorithm, and the embodiment of the present application is not limited.
For example, the preset period, the first fixed frame period, and the second fixed frame period determined by the network device are also shown in fig. 7a, and the network device determines that the second offset value in the second offset information is 1, and the second duration value in the second duration information is 1, then the network device determines that the second target position in the first target fixed frame period is the start position of the second fixed frame period corresponding to the letter b in fig. 7a, and the second target frame period included in the first target fixed frame period is the second fixed frame period corresponding to the letter b in fig. 7 a. That is to say, the channel occupation indication information determined by the network device is used to indicate that the initial position where the terminal device periodically initiates channel occupation is the starting position of the second fixed frame period corresponding to the letter b in fig. 7a, and the fixed frame period occupied by the terminal device is the second fixed frame period corresponding to the letter b in fig. 7 a.
In another implementation manner, in S601, the first target position and the first target fixed frame period are determined according to the first bit map. Wherein, the length value of the first bit bitmap is determined according to a preset period and a first fixed frame period. For example, the preset period is T, the first fixed frame period is Tx, and the length of the first bit map is N1 ═ T/Tx, that is, the first bit map includes N1 bits.
For example, as shown in fig. 7c, the preset period is 20ms, which includes two wireless frames, that is, a subframe 0 and a subframe 1, the preset period is divided into two first fixed frame periods with a duration of 10ms, that is, fixed frame periods corresponding to a number 1 and a number 2 in fig. 7c, each first fixed frame period is divided into five second fixed frame periods with a duration of 2ms, that is, fixed frame periods corresponding to letters a-n in fig. 7c, and a first bitmap determined by the network device is shown in fig. 7 c.
In another implementation manner, in S602, the second target position and the second target fixed frame period are determined according to the second bitmap. The length value of the second bitmap is determined according to a preset period and a second fixed frame period. For example, the predetermined period is T, the first fixed frame period is Tx, and the second fixed frame period is TUExThe length value of the second bitmap is N2 ═ T/TUExThat is, the second bitmap includes N2 bits.
For example, the preset period, the first fixed frame period, and the second fixed frame period determined by the network device are shown in fig. 7b, and the network device determines that the second bitmap is shown in fig. 7d, if the index value in the second bitmap is 1, which indicates the corresponding fixed frame period, for example, the network device determines that the second target position in the first target fixed frame period is the start position of the second fixed frame period corresponding to the letter f in fig. 7b, and the second target frame period included in the first target fixed frame period is the second fixed frame period corresponding to the letters f, h, and m in fig. 7 b. That is to say, the channel occupation indication information determined by the network device is used to indicate that the second target position where the terminal device periodically initiates channel occupation is the start position of the second fixed frame period corresponding to f in fig. 7b, and the second target fixed frame period occupied by the terminal device is the second fixed frame period corresponding to letters f, h, and m in fig. 7 b.
In this embodiment, the network device divides the preset period into a plurality of first fixed frame periods, and divides each first fixed frame period into a plurality of second fixed frame periods, so that the network device determines that the channel occupancy indication information includes: a first target position and a first target fixed frame period in the channel occupancy indication information, and a second target position in the first target fixed frame period and a second target frame period included in the first target fixed frame period are determined. The initial position occupied by the channel and the fixed frame period occupied by the channel of the terminal equipment are indicated by respectively indicating the first position, the first target fixed frame period and the second position and the second target fixed frame period, so that when the terminal equipment initiates temporary data, the initial position occupied by the channel and the fixed frame period occupied by the channel can be determined by the channel occupation indication information, and the temporary data can be occupied and sent.
In the channel occupancy indication method 10 and the channel occupancy indication method 20, the channel occupancy indication information is further used for indicating the terminal device to periodically initiate a starting position of the next channel occupancy and a fixed frame period occupied by the terminal device.
The channel occupancy indication Information is carried in Downlink Control Information (DCI), and the DCI is DCI format 2-0. The DCI Format 2-0 is a DCI Format carrying Dynamic Slot Format Indication (D-SFI), and the SFI information carried on the DCI Format 2-0 may indicate a Format of one or more slots on one or more carriers, which is referred to as a Slot Format combination set, and a position of the Slot Format combination set in the DCI is configured through high layer signaling.
The channel occupation indication information is carried in DCI format 2-0, and a bit is added in DCI format 2-0 to indicate that after the current fixed frame period is finished, the terminal equipment periodically initiates the starting position occupied by the next channel and the fixed frame period occupied by the terminal equipment is the fixed frame period indicated by the channel occupation indication information in the next fixed frame period; or, the bit is used to indicate that, after the current fixed frame period is ended, the terminal device periodically initiates the starting position occupied by the next channel and the fixed frame period occupied by the terminal device is not the fixed frame period indicated by the channel occupation indication information in the next fixed frame period.
The terminal device initiated channel occupation depends on the uplink configuration of the terminal device. That is, at the beginning of the fixed frame period occupied by the terminal device, if the terminal device has the uplink configuration, which indicates that the terminal device has the capability of initiating channel occupation, the terminal device can initiate channel occupation and access the channel. Therefore, before S401, S601 in the channel occupancy indication method 10 and the channel occupancy indication method 20, respectively, the following steps may also be performed: s11: the network equipment determines uplink configuration information of the terminal equipment, wherein the uplink configuration information is used for indicating that the terminal equipment has the capacity of initiating channel occupation; s12: and the network equipment sends the uplink configuration information.
In one implementation, the uplink configuration information includes semi-statically configured uplink, dynamically scheduled uplink, and physical downlink control channel scheduled uplink transmission information; the physical downlink control channel carries downlink control information DCI, and the DCI is used to indicate a terminal device/network device that initiates channel occupation. The DCI formats of the DCI are DCI format 0-0 and DCI format 0-1, and the channel occupation initiated by the terminal equipment or the network equipment can be determined according to the index in the DCI formats. For example, as shown in fig. 8, when indexes in DCI format 0-0 and DCI format 0-1 are 0, indicating that the network device initiates channel occupation; and when the indexes in the DCI formats 0-0 and 0-1 are 1, indicating that the terminal equipment initiates channel occupation.
In one implementation, the uplink configuration information includes a physical uplink shared channel for configuration grant and a physical uplink control channel for carrying scheduling grant.
In one implementation, the uplink configuration information includes a semi-statically configured uplink, for example, a physical uplink shared channel configured with a grant, a physical uplink control channel configured with a semi-static signaling configuration, a sounding reference signal configured with a semi-static signaling configuration, a location of a semi-static signaling configured with a random access resource, and so on.
Referring to fig. 9, fig. 9 is a schematic structural diagram of a channel occupancy indicating apparatus according to an embodiment of the present invention, where the channel occupancy indicating apparatus is used in a network device, and the channel occupancy indicating apparatus 90 may include:
a determining unit 901, configured to determine channel occupation indication information, where the channel occupation indication information is used to indicate an initial position where a terminal device periodically initiates channel occupation and a fixed frame period occupied by the terminal device;
a sending unit 902, configured to send the channel occupation indication information to the terminal device.
In one implementation, the starting position where the terminal device periodically initiates channel occupation is determined according to offset information; and the fixed frame period occupied by the terminal equipment is determined according to the duration information.
In an implementation manner, the offset information includes first offset information, the duration information includes first duration information, and the determining unit 901 determines that the channel occupation indication information is implemented in a specific manner as follows: the determining unit 901 determines a first target position and a first target fixed frame period in the channel occupancy indication information, where the first target position is determined according to the first offset information, and the first target fixed frame period is determined according to the first time length information.
In an implementation manner, the offset information further includes second offset information, the duration information further includes second duration information, and the determining unit 901 is further configured to: determining a second target position in the first target fixed frame period and a second target fixed frame period included in the first target fixed frame period, the second target position being determined according to the second offset information, the second target fixed frame period being determined according to the second duration information.
In one implementation, the starting position where the terminal device periodically initiates channel occupation and the fixed frame period occupied by the terminal device are determined according to a bitmap.
In an implementation manner, the bit map includes a first bit map, and the specific implementation manner of the determining unit 901 determining the channel occupancy indication information is as follows: the determining unit 901 determines a first target position and a first target fixed frame period in the channel occupancy indication information, where the first target position and the first target fixed frame period are determined according to the first bitmap.
In an implementation manner, the bitmap further includes a second bitmap, and the determining unit 901 is further configured to determine a second target position in the first target fixed frame period and a second target fixed frame period included in the first target fixed frame period, where the second target position and the second target fixed frame period are determined according to the second bitmap.
In one implementation, before the determining unit 901 determines the channel occupancy indication information, the following steps may be further performed: a determining unit 901 determines uplink configuration information of the terminal device, where the uplink configuration information is used to indicate that the terminal device has a capability of initiating channel occupation; the sending unit 902 sends the uplink configuration information.
In one implementation, the uplink configuration information includes a semi-statically configured uplink, a dynamically scheduled uplink, and an uplink transmission information scheduled by a physical downlink control channel; the physical downlink control channel carries downlink control information DCI, and the DCI is used for indicating terminal equipment/network equipment initiating channel occupation.
In one implementation, the channel occupation indication information is further used to indicate a starting position where the terminal device periodically initiates the next channel occupation and a fixed frame period occupied by the terminal device.
In the embodiment of the application, channel occupation indication information is determined and sent, and the channel occupation indication information is used for indicating the starting position of the terminal equipment for periodically initiating channel occupation and the fixed frame period occupied by the terminal equipment. Therefore, when temporary data needs to be sent, the terminal equipment can determine the initial position of periodically initiating the channel occupation and the fixed frame period occupied by the terminal equipment according to the channel occupation indication information, and further the terminal equipment is favorable for sending the temporary data.
Referring to fig. 10, fig. 10 is a schematic structural diagram of a network device according to an embodiment of the present disclosure. The network device 100 described in the embodiment of the present application includes: the processor 1001, the memory 1002, the processor 1001 and the memory 1002 are connected by one or more communication buses.
The Processor 1001 may be a Central Processing Unit (CPU), and may also be other general purpose processors, Digital Signal Processors (DSP), Application Specific Integrated Circuits (ASIC), Field-Programmable Gate arrays (FPGA) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The processor 1001 is configured to support the user equipment to perform the corresponding functions of the network device in the methods described in fig. 4 and 6.
The memory 1002 may include a read only memory and a random access memory, and provides computer programs and data to the processor 1001. A portion of the memory 1002 may also include non-volatile random access memory. When the processor 1001 calls the computer program, it is configured to:
determining channel occupation indication information, wherein the channel occupation indication information is used for indicating an initial position of a terminal device for periodically initiating channel occupation and a fixed frame period occupied by the terminal device;
and sending the channel occupation indication information to the terminal equipment.
In one implementation, the starting position where the terminal device periodically initiates channel occupation is determined according to offset information; and the fixed frame period occupied by the terminal equipment is determined according to the duration information.
In one implementation, the offset information includes first offset information, the duration information includes first duration information, and the specific implementation manner of the processor 1001 determining the channel occupancy indication information is as follows: the processor 1001 determines a first target position and a first target fixed frame period in the channel occupancy indication information, the first target position being determined according to the first offset information, and the first target fixed frame period being determined according to the first time length information.
In one implementation, the offset information further includes second offset information, the duration information further includes second duration information, and the processor 1001 further performs the following steps: the processor 1001 determines a second target position in the first target fixed frame period, which is determined according to the second offset information, and a second target fixed frame period included in the first target fixed frame period, which is determined according to the second duration information.
In one implementation, the starting position where the terminal device periodically initiates channel occupation and the fixed frame period occupied by the terminal device are determined according to a bitmap.
In one implementation, the bitmap includes a first bitmap, and the processor 1001 specifically performs the following steps when determining the channel occupancy indication information: the processor 1001 determines a first target position and a first target fixed frame period in the channel occupancy indication information, which are determined according to the first bit map.
In one implementation, the bitmap further includes a second bitmap, and the processor 1001 is further configured to perform the following steps: the processor 1001 determines a second target position in the first target fixed frame period and a second target fixed frame period included in the first target fixed frame period, the second target position and the second target fixed frame period being determined according to a second bitmap.
In one implementation, before the processor 1001 determines the channel occupancy indication information, the following steps may be further performed: the processor 1001 determines uplink configuration information of the terminal device, where the uplink configuration information is used to indicate that the terminal device has a capability of initiating channel occupation; the processor 1001 sends the uplink configuration information.
In one implementation, the uplink configuration information includes a semi-statically configured uplink, a dynamically scheduled uplink, and an uplink transmission information scheduled by a physical downlink control channel; the physical downlink control channel carries downlink control information DCI, and the DCI is used for indicating terminal equipment/network equipment initiating channel occupation.
In one implementation, the channel occupation indication information is further used to indicate a starting position where the terminal device periodically initiates the next channel occupation and a fixed frame period occupied by the terminal device.
In this embodiment of the present application, the processor 1001 determines and sends channel occupation indication information, where the channel occupation indication information is used to indicate a starting position where a terminal device periodically initiates channel occupation and a fixed frame period occupied by the terminal device. Therefore, when temporary data needs to be sent, the terminal equipment can determine the initial position of periodically initiating the channel occupation and the fixed frame period occupied by the terminal equipment according to the channel occupation indication information, and further the terminal equipment is favorable for sending the temporary data.
An embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the computer program may be used to implement the channel occupation indication method described in the embodiments corresponding to fig. 4 and fig. 6 in the embodiment of the present application, and details are not described herein again.
The computer readable storage medium may be an internal storage unit of the terminal device according to any of the foregoing embodiments, for example, a hard disk or a memory of the device. The computer-readable storage medium may also be an external storage device of the terminal device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the device. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal device. The computer-readable storage medium is used for storing the computer program and other programs and data required by the terminal device. The computer readable storage medium may also be used to temporarily store data that has been output or is to be output.
It will be understood by those skilled in the art that all or part of the processes in the methods of the embodiments described above may be implemented by a computer program, which may be stored in a readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.

Claims (13)

1. A method for indicating channel occupancy, the method comprising:
the method comprises the steps that a network device determines channel occupation indication information, wherein the channel occupation indication information is used for indicating an initial position of a terminal device for periodically initiating channel occupation and a fixed frame period occupied by the terminal device;
and the network equipment sends the channel occupation indication information to the terminal equipment.
2. The method of claim 1,
the starting position of the terminal equipment for periodically initiating the channel occupation is determined according to the bias information; and the fixed frame period occupied by the terminal equipment is determined according to the duration information.
3. The method of claim 2, wherein the offset information comprises first offset information, wherein the duration information comprises first duration information, and wherein the determining, by the network device, channel occupancy indication information comprises:
the network device determines a first target position and a first target fixed frame period in the channel occupation indication information, wherein the first target position is determined according to the first offset information, and the first target fixed frame period is determined according to the first time length information.
4. The method of claim 2 or 3, wherein the offset information further comprises second offset information, wherein the duration information further comprises second duration information, and wherein the method further comprises:
the network device determines a second target position in the first target fixed frame period and a second target fixed frame period included in the first target fixed frame period, where the second target position is determined according to the second bias information, and the second target fixed frame period is determined according to the second duration information.
5. The method of claim 1,
the starting position occupied by the terminal equipment periodically initiating the channel and the fixed frame period occupied by the terminal equipment are determined according to the bitmap.
6. The method of claim 5, wherein the bitmap comprises a first bitmap, and wherein the network device determines channel occupancy indication information, comprising:
the network device determines a first target position and a first target fixed frame period in the channel occupancy indication information, where the first target position and the first target fixed frame period are determined according to the first bit map.
7. The method of claim 5 or 6, wherein the bitmap further comprises a second bitmap, the method further comprising:
the network device determines a second target position in the first target fixed frame period and a second target fixed frame period included in the first target fixed frame period, the second target position and the second target fixed frame period being determined according to the second bitmap.
8. The method of claim 1, wherein before the network device determines the channel occupancy indication information, the method further comprises:
the network equipment determines uplink configuration information of the terminal equipment, wherein the uplink configuration information is used for indicating that the terminal equipment has the capacity of initiating channel occupation;
and the network equipment sends the uplink configuration information.
9. The method of claim 8,
the uplink configuration information comprises a semi-statically configured uplink, a dynamically scheduled uplink and uplink transmission information scheduled by a physical downlink control channel;
the physical downlink control channel carries downlink control information DCI, and the DCI is used for indicating terminal equipment/network equipment initiating channel occupation.
10. The method of claim 1,
the channel occupation indication information is further used for indicating the starting position where the terminal device periodically initiates the next channel occupation and the fixed frame period occupied by the terminal device.
11. A channel occupancy indication device, the channel occupancy indication device comprising:
a determining unit, configured to determine channel occupation indication information, where the channel occupation indication information is used to indicate an initial position where a terminal device periodically initiates channel occupation and a fixed frame period occupied by the terminal device;
and the sending unit is used for sending the channel occupation indication information to the terminal equipment.
12. A network device comprising a processor and a memory, the processor and the memory being interconnected, wherein the memory is configured to store a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method of any one of claims 1 to 10.
13. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions that, when executed by a processor, cause the processor to carry out the method according to any one of claims 1 to 10.
CN202010814053.2A 2020-08-13 2020-08-13 Channel occupation indication method, device and related equipment Pending CN114080046A (en)

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