WO2023011106A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

Info

Publication number
WO2023011106A1
WO2023011106A1 PCT/CN2022/104582 CN2022104582W WO2023011106A1 WO 2023011106 A1 WO2023011106 A1 WO 2023011106A1 CN 2022104582 W CN2022104582 W CN 2022104582W WO 2023011106 A1 WO2023011106 A1 WO 2023011106A1
Authority
WO
WIPO (PCT)
Prior art keywords
detection threshold
range
interference
iab node
energy detection
Prior art date
Application number
PCT/CN2022/104582
Other languages
English (en)
Chinese (zh)
Inventor
乔梁
余官定
殷锐
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2023011106A1 publication Critical patent/WO2023011106A1/fr

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA

Definitions

  • the embodiments of the present application relate to the field of communication technologies, and in particular, to a communication method and device.
  • the integrated access and backhaul (IAB) technology is a technology in which both the access link and the backhaul link use wireless transmission.
  • IAB integrated access and backhaul
  • unlicensed spectrum can be introduced into the IAB network.
  • full-duplex technology can be introduced in the IAB network, so that the backhaul link and the access link can use the same spectrum resources.
  • the IAB node When the IAB node (node) sends a signal to the IAB donor (donor), and the IAB node sends a signal to the terminal device at the same time, the signal transmitted on the backhaul link will interfere with the signal transmitted on the access link, and this interference is called called "self-interference".
  • LBT listen before talk
  • the IAB node uses the unlicensed spectrum to send signals on the access link, it first needs to use the listen before talk (LBT) mechanism to monitor the channel, and only sends the signal when the channel is detected to be idle.
  • LBT listen before talk
  • CCA clear channel assessment
  • the embodiment of the present application discloses a communication method and device for improving CCA detection efficiency.
  • the first aspect discloses a communication method.
  • the communication method can be applied to an IAB node, and can also be applied to a module (for example, a chip) in the IAB node.
  • the following uses the IAB node as an example for illustration.
  • the IAB node is connected to the terminal device through a wireless access link, and the IAB node is connected to the IAB host through a wireless backhaul link.
  • the communication method may include: the IAB node determines the first range through self-interference channel estimation and self-interference cancellation, the first range is the range of the energy detection threshold detected by CCA, the self-interference is the interference of the first channel to the second channel, the second One channel is the channel between the IAB node and the IAB host, the second channel is the channel between the IAB node and the terminal equipment; determine the first energy detection threshold, the first energy detection threshold is in the first range; the second channel is CCA detection: when the energy on the second channel is less than or equal to the first energy detection threshold, sending a signal to the terminal device through the second channel.
  • the determined energy detection threshold is within the range of the energy detection threshold determined according to self-interference cancellation, which can ensure that when performing CCA detection, it can be accurately determined whether the channel is busy or idle according to the determined energy detection threshold, which can avoid the channel being idle However, when the detection result is busy, or the channel is originally busy but the detection result is idle, the accuracy of CCA detection can be improved.
  • determining the first range by the IAB node through self-interference channel estimation and self-interference cancellation includes: the IAB node performs self-interference channel estimation to obtain the first interference; performs self-interference cancellation according to the first interference to obtain the second range,
  • the second range is a range of self-interference remaining after self-interference cancellation; the first range is determined according to the second range.
  • the range of the energy detection threshold is determined according to the range of the remaining self-interference after the self-interference is eliminated, and the influence of the self-interference that is not eliminated after the self-interference is eliminated on the CCA detection can be further improved. accuracy.
  • the IAB node determining the first range according to the second range includes: the IAB node determines the minimum value of the first range according to the maximum value of the second range and the bandwidth of the first channel; value, the bandwidth of the first channel, and the maximum transmission power of the IAB node, determine the maximum value of the first range.
  • the IAB node determining the first energy detection threshold includes: the IAB node determining the second energy detection threshold; when the CCA detection is the first CCA detection after interference channel estimation, the second energy detection threshold Determined as the first energy detection threshold; when the CCA detection is the Kth CCA detection after self-interference channel estimation, the sum of the energy detection threshold of the K-1th CCA detection and the K-1th adjustment value is determined as the first Energy detection threshold, K is an integer greater than 1.
  • only one initial energy detection threshold needs to be determined after one self-interference channel estimation, which reduces the number of determinations of the initial energy detection threshold, reduces the processing procedure of the IAB node, and thus reduces the power consumption of the IAB node.
  • the energy detection threshold can be dynamically adjusted according to the difference of CCA detection, and the efficiency of CCA detection can be improved.
  • the IAB node determining the second energy detection threshold includes: the IAB node determining the second energy detection threshold according to the first range.
  • the initial energy detection threshold after one self-interference channel estimation is determined according to the range of the energy detection threshold, and the influence of self-interference on CCA detection is considered, so that the efficiency of CCA detection can be improved.
  • the IAB node determining the first energy detection threshold includes: the IAB node determines the third energy detection threshold according to the time of the CCA detection; when the CCA detection is the first CCA detection after the interference channel estimation, the The third energy detection threshold is determined as the first energy detection threshold; when the CCA detection is the Kth CCA detection after self-interference channel estimation, the sum of the third energy detection threshold and the K-1th adjustment value is determined as the first energy Detection threshold, K is an integer greater than 1.
  • each CCA detection needs to re-determine the initial energy detection threshold, and the initial energy detection threshold is related to the time of CCA detection, and the optimal initial energy detection threshold can be determined according to the current situation , can improve the accuracy of determining the initial energy detection threshold, thereby further improving the accuracy of CCA detection.
  • the IAB node determining the third energy detection threshold according to the CCA detection time includes: the IAB node determining the third energy detection threshold according to the CCA detection time and the first range.
  • the initial energy detection threshold of CCA detection after a self-interference channel estimation is determined according to the range of the energy detection threshold and the time of CCA detection, taking into account the time of CCA detection and the influence of self-interference on CCA detection, Therefore, the accuracy of CCA detection can be further improved.
  • using the same adjustment value can avoid the number of times the IAB node determines the adjustment value, can reduce the processing complexity of the IAB node, and thus can reduce the power consumption of the IAB node.
  • the K-th adjustment value when K is greater than 2, when the interference power is less than the first energy detection threshold and no acknowledgment (acknowledge, ACK) response from the terminal device is received for N consecutive times, the K-th adjustment value is the difference between the K-1th adjustment value and the adjustment threshold, and N is an integer greater than 1; when the interference power is less than the first energy detection threshold and the ACK response from the terminal device is received, the Kth adjustment value is the first K-1 adjustment value; when the interference power for M consecutive times is greater than the first energy detection threshold, the Kth adjustment value is the sum of the K-1th adjustment value and the adjustment threshold, and M is an integer greater than 1.
  • the energy detection threshold can be dynamically adjusted according to whether an ACK response is received after the signal is sent, or the number of times the channel is busy is continuously detected, which can further improve the accuracy of the energy detection threshold, and further improve the accuracy of the CCA detection. accuracy.
  • the second aspect discloses a communication device.
  • the communication device may be an IAB node, or may be a module (for example, a chip) in the IAB node.
  • the IAB node is connected to the terminal equipment through a wireless access link, and the IAB node is connected to the IAB host through a wireless backhaul link.
  • the communication device may include:
  • the first determination unit is configured to determine the first range through self-interference channel estimation and self-interference cancellation, the first range is the range of the energy detection threshold for CCA detection, self-interference is the interference of the first channel to the second channel, and the first channel is the channel between the IAB node and the IAB host, and the second channel is the channel between the IAB node and the terminal device;
  • a second determining unit configured to determine a first energy detection threshold, where the first energy detection threshold is within a first range
  • a detection unit configured to perform CCA detection on the second channel
  • the sending unit is configured to send a signal to the terminal device through the second channel when the energy on the second channel is less than or equal to the first energy detection threshold.
  • the first determining unit is specifically configured to:
  • the first range is determined based on the second range.
  • the first determining unit determining the first range according to the second range includes:
  • the second determining unit is specifically configured to:
  • the second energy detection threshold is determined as the first energy detection threshold
  • the CCA detection is the Kth CCA detection after the interference channel estimation
  • the sum of the energy detection threshold of the K-1th CCA detection and the K-1th adjustment value is determined as the first energy detection threshold, and K is greater than 1 an integer of .
  • determining the second energy detection threshold by the second determining unit includes:
  • a second energy detection threshold is determined.
  • the second determining unit is specifically configured to:
  • the third energy detection threshold is determined as the first energy detection threshold
  • the CCA detection is the Kth CCA detection after interference channel estimation
  • the sum of the third energy detection threshold and the K-1th adjustment value is determined as the first energy detection threshold
  • K is an integer greater than 1.
  • the second determining unit determining the third energy detection threshold according to the time of CCA detection includes: determining the third energy detection threshold according to the time of CCA detection and the first range.
  • the K-th adjustment value is the K-1th
  • N is an integer greater than 1
  • the Kth adjustment value is the K-1th adjustment value
  • the Kth adjustment value is the sum of the K-1th adjustment value and the adjustment threshold, and M is an integer greater than 1.
  • the third aspect discloses a communication device.
  • the communication device may be an IAB node, or may be a module (for example, a chip) in the IAB node.
  • the communication device may include a processor, a memory, an input interface and an output interface, the input interface is used to receive information from other communication devices other than the communication device, and the output interface is used to send information to other communication devices other than the communication device Outputting information, when the processor executes the computer program stored in the memory, the processor executes the communication method disclosed in the first aspect or any implementation manner of the first aspect.
  • the fourth aspect discloses a computer-readable storage medium, on which a computer program or computer instruction is stored, and when the computer program or computer instruction is run, the first aspect or any implementation manner of the first aspect is realized Open communication methods.
  • the fifth aspect discloses a chip, including a processor configured to execute a program stored in a memory, and when the program is executed, the chip executes the communication method disclosed in the first aspect or any implementation manner of the first aspect.
  • the memory is located outside the chip.
  • the sixth aspect discloses a computer program product, the computer program product includes computer program code, and when the computer program code is executed, the communication method disclosed in the first aspect or any implementation manner of the first aspect is executed.
  • FIG. 1 is a schematic diagram of a network architecture disclosed in an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a communication method disclosed in an embodiment of the present application.
  • Fig. 3 is a schematic diagram of determining a first energy detection threshold disclosed in an embodiment of the present application.
  • Fig. 4 is another schematic diagram of determining the first energy detection threshold disclosed in the embodiment of the present application.
  • FIG. 5 is a schematic diagram of an IAB node access link transmission power and access link throughput disclosed in an embodiment of the present application
  • FIG. 6 is a schematic diagram of an adjustment threshold and access link throughput disclosed in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another IAB node access link transmission power and access link throughput disclosed in the embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a communication device disclosed in an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application.
  • Fig. 10 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application.
  • the embodiment of the present application discloses a communication method and device system for improving the efficiency of CCA detection. Each will be described in detail below.
  • the fifth generation of mobile communication technology puts forward more stringent requirements for network performance indicators, such as: capacity indicators increased by 1000 times, wider coverage requirements, ultra-high reliability and ultra-low latency, etc.
  • network performance indicators such as: capacity indicators increased by 1000 times, wider coverage requirements, ultra-high reliability and ultra-low latency, etc.
  • capacity indicators increased by 1000 times, wider coverage requirements, ultra-high reliability and ultra-low latency, etc.
  • high-frequency small cells are used to form a network in hotspot areas.
  • Due to problems such as poor propagation characteristics of high-frequency carriers, severe shadowing attenuation, and limited coverage, a large number of small cells need to be densely deployed, resulting in the need for a large number of optical fibers for backhaul, and the deployment of optical fibers is relatively difficult.
  • IAB integrated access and backhaul
  • a terminal device can access an IAB node (node) through a wireless access link, and the IAB node can be connected to an IAB donor (donor) node through a wireless backhaul link.
  • unlicensed spectrum can be introduced into the IAB network.
  • the commonly used resource competition mechanism is the listen before talk (LBT) mechanism.
  • LBT listen before talk
  • CCA clear channel assessment
  • LBT success the CCA detecting that the channel is idle
  • LBT failure the CCA detecting that the channel is busy
  • the communication device may adopt a detection method based on signal energy, and/or may adopt a detection method based on signal type.
  • the communication device can judge the state of the channel through a set energy detection threshold (energy detection threshold).
  • energy detection threshold energy detection threshold
  • the communication device detects that the signal energy in the channel exceeds the energy detection threshold, it determines that the channel is busy, and when the communication device detects that the signal energy in the channel is less than the energy detection threshold, it determines that the channel is idle.
  • the IAB node before the IAB node sends a signal to the terminal device, the IAB node first needs to perform CCA detection.
  • the IAB node uses full-duplex technology
  • the IAB node sends a signal to the IAB host
  • the IAB node sends a signal to the terminal device at the same time
  • the signal transmitted on the backhaul link will have an impact on the signal transmitted on the access link.
  • Interference that is, self-interference.
  • the self-interference will cause the signal energy on the channel between the IAB node and the terminal device to be large, so that the channel may be idle during CCA detection but the detection result is busy, which will affect the CCA detection and reduce the CCA detection efficiency. It can be seen that how to improve the detection efficiency of CCA has become an urgent technical problem to be solved.
  • FIG. 1 is a schematic diagram of a network architecture disclosed in an embodiment of the present application.
  • the network architecture may include an IAB host, an IAB node, and a terminal device.
  • the IAB node and the terminal device can communicate through the Uu interface of the new radio (NR), and the IAB node and the IAB host can communicate through the wireless backhaul (BH) link.
  • the Uu interface is the wireless interface (the radio interference between UTRAN and UE).
  • the priority of the backhaul link is higher than that of the access link.
  • the IAB node and the IAB host transmit signals, neither the IAB node nor the IAB host needs to perform channel detection. Before the IAB node and the terminal device send a signal to the opposite end, the IAB node or the terminal device first needs to perform a channel idle detection, and only sends a signal when the channel is idle.
  • the IAB host is an access network device supporting the IAB node. Including but not limited to: evolved node B (evolved node base, eNB), radio network controller (radio network controller, RNC), node B (node B, NB), base station controller (base station controller, BSC), base station Transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home node B, HNB), baseband unit (baseband unit, BBU), long term evolution (long term evolution, LTE) (evolved LTE, eLTE) base station, NR base station (next generation node B, gNB) or base station of next generation communication system, etc.
  • evolved node B evolved node base, eNB
  • RNC radio network controller
  • node B node B
  • BSC base station controller
  • BTS base station Transceiver station
  • home base station for example, home evolved NodeB, or home node B, HNB
  • baseband unit
  • the IAB node is used to provide access services and backhaul services for terminal devices.
  • the IAB node can be regarded as a relay node, which can be one of the above-mentioned access network devices or terminal devices with a forwarding function, or can be an independent device form.
  • an IAB node may generally refer to any node or device with a relay function.
  • the IAB node may be a module or device set on a mobile object, and the mobile object includes but is not limited to devices in the Internet of Things, such as automobiles, trains, and airplanes.
  • the use of IAB node and relay node in this application should be understood to have the same meaning.
  • Terminal equipment also called user equipment (UE), mobile station (MS), mobile terminal (MT), etc.
  • the terminal device can be a handheld terminal, a notebook computer, a subscriber unit (subscriber unit), a cellular phone (cellular phone), a smart phone (smart phone), a wireless data card, a personal digital assistant (personal digital assistant, PDA) computer, a tablet computer , wireless modem (modem), handheld device (handheld), laptop computer (laptop computer), cordless phone (cordless phone) or wireless local loop (wireless local loop, WLL) station, machine type communication (machine type communication, MTC) terminals, wearable devices (such as smart watches, smart bracelets, pedometers, etc.), vehicle-mounted devices (such as cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), virtual reality (virtual reality, VR ) equipment, augmented reality (augmented reality, AR) equipment, wireless terminals in industrial control (industrial control),
  • VR virtual reality
  • AR augmented reality
  • system architecture shown in FIG. 1 may not be limited to include only the network elements and devices shown in the figure, but may also include other network elements or devices not shown in the figure. List them all.
  • FIG. 2 is a schematic flowchart of a communication method disclosed in an embodiment of the present application. As shown in Fig. 2, the communication method may include the following steps.
  • the IAB node determines the first range through self-interference channel estimation and self-interference cancellation.
  • the IAB node may determine the first range through self-interference channel estimation and self-interference cancellation.
  • the first range is the range of the energy detection threshold for CCA detection.
  • the self-interference is the interference of the first channel to the second channel, the first channel is the channel between the IAB node and the IAB host, and the second channel is the channel between the IAB node and the terminal device. It can be seen that the self-interference is the interference of the channel on the backhaul link to the channel on the access link.
  • the IAB node may first perform self-interference channel estimation to obtain the interference range, that is, the IAB node may determine the interference of the first channel to the second channel to obtain the interference range.
  • the interference range can be understood as the interval range of the value of the self-interference.
  • the IAB node may perform self-interference channel estimation periodically, may also perform self-interference channel estimation when sending signals to the terminal equipment, and may also perform self-interference channel estimation before using the first channel and the second channel to transmit signals.
  • the first interference may be an interval range, that is, an interval range of values of the self-interference.
  • the IAB node can perform self-interference cancellation according to the interference range to obtain the second range.
  • the second range is the range of the remaining self-interference after the self-interference is eliminated, which can be understood as the range of the self-interference that has not been eliminated, and can also be understood as the residual self-interference.
  • the IAB node can perform self-interference cancellation in real time. In one case, the IAB node can detect the energy on the second channel, and can use the energy on the second channel to subtract the first interference to obtain the second range.
  • the IAB can detect the first energy on the first channel and the second energy on the second channel, then can use the second energy to subtract the first energy to get the difference, and finally can use the difference to multiply The second range is obtained with the above-mentioned first interference.
  • the IAB node can determine the first range according to the second range.
  • the IAB can determine the minimum value of the first range according to the maximum value of the second range and the bandwidth of the second channel, and can determine the minimum value of the first range according to the maximum value of the second range, the bandwidth of the second channel, and the maximum transmission power of the IAB node. maximum value.
  • the relationship between the maximum transmission power PH of the IAB node and the energy detection threshold can be shown in Table 1:
  • TL -85dBm/MHz+10*log(BW)
  • BW is the bandwidth of the second channel
  • I 1 is the maximum value of the second range, that is, the maximum value of the remaining self-interference after interference cancellation. According to Table 1, it can be determined that the first range is [TL+I 1 , TL+23dBm-P H +I 1 ].
  • the above is an illustration of determining the first range based on the second range, and does not constitute a limitation thereto.
  • the above-mentioned interval division of PH may change.
  • the energy detection thresholds corresponding to different pH intervals may change.
  • the first range may be determined after self-interference channel estimation and before the first CCA detection. There is only one first range for one self-interference channel estimation. In another case, a first range may be determined before each CCA detection. For multiple CCA detections after one self-interference channel estimation, multiple first ranges may be determined, and the multiple first ranges may be the same or different.
  • the IAB node determines a first energy detection threshold.
  • the IAB node may determine a second energy detection threshold.
  • the second energy detection threshold may be determined as the first energy detection threshold.
  • the sum of the energy detection threshold of the K-1th CCA detection and the K-1th adjustment value may be determined as the first energy detection threshold.
  • K is an integer greater than 1.
  • the first adjustment value may be configured by the IAB host, or may be pre-configured according to a protocol. It can be seen that the first adjustment value is a known value.
  • the second energy detection threshold may be understood as the initial energy detection threshold. It can be seen that there is only one initial energy detection threshold for all CCA detections after one self-interference channel estimation. Please refer to FIG. 3 .
  • FIG. 3 is a schematic diagram of determining a first energy detection threshold disclosed in an embodiment of the present application. As shown in FIG. 3 , the energy detection threshold TL 1 of the first CCA detection after the interference channel estimation, namely CCA 1 , is the optimal initial energy detection threshold TL best . When the first CCA detection is completed, the sum of the energy detection threshold TL 1 of the first CCA detection and the first adjustment value TL adjust (t 1 ) can be determined as the energy detection threshold TL 1 at the end of the first CCA detection (t 1 ). The energy detection threshold TL 1 (t 1 ) at the end of the first CCA detection can be determined as the energy detection threshold TL 2 of the second CCA detection, and so on.
  • the IAB node may determine the second energy detection threshold according to the first range.
  • the IAB node may determine the energy detection threshold corresponding to the maximum throughput on the access link among the energy detection thresholds in the first range as the second energy detection threshold.
  • the IAB may determine the third energy detection threshold according to the time of CCA detection.
  • the third energy detection threshold can be determined as the first energy detection threshold
  • the CCA detection is the Kth CCA detection after the interference channel estimation
  • it can be The sum of the third energy detection threshold and the K-1th adjustment value is determined as the first energy detection threshold.
  • K is an integer greater than 1.
  • the first adjustment value may be configured by the IAB host, or may be pre-configured. It should be understood that the first adjustment value here may be the same as or different from the above first adjustment value.
  • FIG. 4 is another schematic diagram of determining the first energy detection threshold disclosed in the embodiment of the present application.
  • the energy detection threshold TL 1 (t 1 ) of the first CCA detection after the interference channel estimation, namely CCA 1 is the optimal initial energy detection threshold TL best (t 1 ) at the first moment.
  • the first moment is the start moment of the first CCA detection.
  • the sum of the optimal initial energy detection threshold TL best (t 2 ) and the first adjustment value TL adjust (t 2 ) at the second moment can be determined as the Energy detection threshold TL 1 (t 2 ).
  • the second moment is the end moment of the first CCA detection.
  • the sum of the optimal initial energy detection threshold TL best (t 3 ) and the first adjustment value TL adjust (t 2 ) at the third moment can be determined as the energy detection threshold TL 2 (t 3 ) for the second CCA detection, to And so on.
  • the third moment is the start moment of the second CCA detection.
  • the IAB node may determine the third energy detection threshold according to the third range.
  • the third range is the range of self-interference remaining after self-interference cancellation corresponding to the time of CCA detection.
  • the IAB node may perform self-interference cancellation first to obtain the third range.
  • the IAB node may determine the energy detection threshold corresponding to the maximum system throughput among the energy detection thresholds in the third range as the third energy detection threshold. It can be seen that the third energy detection thresholds corresponding to different CCA detection times may be different.
  • self-interference cancellation reference may be made to the relevant description of step 201 .
  • the K-th adjustment is the difference between the K-1th adjustment value and the adjustment threshold. It can be seen that when the second channel is detected to be idle during the K-1 CCA detection, the same signal is repeatedly sent N times to the terminal device through the second channel, but no ACK is received from the terminal device for the N signals.
  • the adjustment value may be reduced during the K-time CCA detection. N is an integer greater than 1.
  • the Kth adjustment value is the K-1th adjustment value. It can be seen that when the second channel is detected to be idle during the K-1 CCA detection, a signal is sent to the terminal device through the second channel, and an ACK for this signal is received from the terminal device, and the K-th CCA detection The adjustment value can be kept unchanged, that is, the adjustment value of the Kth time is kept the same as the adjustment value of the K-1th time.
  • the Kth adjustment value is the sum of the K-1th adjustment value and the adjustment threshold. It can be seen that when the second channel is detected to be busy for M consecutive CCA detections before the Kth time, the adjustment value may be increased during the Kth CCA detection. M is an integer greater than 1.
  • the above adjustment threshold may be configured by the IAB host, or may be pre-configured.
  • the first energy detection threshold is within the first range.
  • the determined energy detection threshold may be determined as the first energy detection threshold.
  • the minimum value of the first range may be determined as the first energy detection threshold.
  • the maximum value in the first range may be determined as the first energy detection threshold.
  • FIG. 5 is a schematic diagram of an IAB node access link transmit power and access link throughput disclosed in an embodiment of the present application.
  • the access link throughput without residual self-interference is much greater than that with residual self-interference.
  • the throughput of the access link with the adjusted threshold ⁇ is higher than the throughput of the access link without the adjusted threshold ⁇ .
  • FIG. 6 is a schematic diagram of an adjustment threshold and access link throughput disclosed in an embodiment of the present application. As shown in Figure 6, as the modulation threshold increases, the access link throughput first increases and then remains unchanged.
  • FIG. 7 is a schematic diagram of another IAB node access link transmission power and access link throughput disclosed in the embodiment of the present application. As shown in FIG. 7 , the access link throughput without residual self-interference is much greater than that with residual self-interference. The throughput of the access link with the adjusted threshold ⁇ is higher than the throughput of the access link without the adjusted threshold ⁇ .
  • Fig. 5 and Fig. 6 show the case of only one optimal initial energy detection threshold for one self-interference channel estimation
  • Fig. 7 shows the case of different optimal initial energy detection thresholds for different CCA detections after one self-interference channel estimation.
  • the IAB node performs CCA detection on the second channel.
  • the IAB node performs CCA detection according to the first CCA monitoring threshold determined in 202 .
  • the IAB node If the energy on the second channel is less than or equal to the first energy detection threshold, the IAB node sends a signal to the terminal device through the second channel.
  • the IAB node may perform CCA detection on the second channel, that is, detect the energy of the signal on the second channel.
  • CCA detection When it is detected that the energy on the second channel is less than or equal to (or less than) the first energy detection threshold, it indicates that the second channel is idle, and the IAB node can send a signal to the terminal device through the second channel.
  • the spectrum resource used by the IAB node to send a signal is an unlicensed spectrum resource.
  • the terminal device can receive the signal sent from the IAB node through the second channel.
  • the signal sent by the IAB node may be data, information, or an instruction.
  • the functions performed by the IAB node in the above communication method may also be performed by a module (for example, a chip) in the IAB node, and the functions performed by the terminal device may also be performed by a module (for example, a chip) in the terminal device. .
  • FIG. 8 is a schematic structural diagram of a communication device disclosed in an embodiment of the present application.
  • the communication device may include:
  • the first determination unit 801 is configured to determine the first range by self-interference channel estimation and self-interference cancellation, the first range is the range of the energy detection threshold for CCA detection, and the self-interference is the interference of the first channel to the second channel, the first The channel is the channel between the IAB node and the IAB host, and the second channel is the channel between the IAB node and the terminal device;
  • the second determining unit 802 is configured to determine a first energy detection threshold, where the first energy detection threshold is within a first range;
  • the sending unit 804 is configured to send a signal to the terminal device through the second channel when the energy on the second channel is less than or equal to the first energy detection threshold.
  • the first determining unit 801 is specifically configured to:
  • the first range is determined based on the second range.
  • the first determining unit 801 determining the first range according to the second range includes:
  • the second determination unit 802 is specifically configured to:
  • the second energy detection threshold is determined as the first energy detection threshold
  • the CCA detection is the Kth CCA detection after the interference channel estimation
  • the sum of the energy detection threshold of the K-1th CCA detection and the K-1th adjustment value is determined as the first energy detection threshold, and K is greater than 1 an integer of .
  • the second determining unit 802 determining the second energy detection threshold includes:
  • a second energy detection threshold is determined.
  • the second determining unit 802 is specifically configured to:
  • the third energy detection threshold is determined as the first energy detection threshold
  • the CCA detection is the Kth CCA detection after interference channel estimation
  • the sum of the third energy detection threshold and the K-1th adjustment value is determined as the first energy detection threshold
  • K is an integer greater than 1.
  • the second determining unit 802 determining the third energy detection threshold according to the time of CCA detection includes:
  • the K-th adjustment value is the K-1-th adjustment value and the difference between the adjustment threshold, N is an integer greater than 1;
  • the Kth adjustment value is the K-1th adjustment value
  • the Kth adjustment value is the sum of the K-1th adjustment value and the adjustment threshold, and M is an integer greater than 1.
  • first determining unit 801, the second determining unit 802, the detecting unit 803, and the sending unit 804 can be directly obtained by referring to the relevant description of the IAB node in the method embodiment shown in FIG. 2 above, and will not be repeated here. .
  • FIG. 9 is a schematic structural diagram of another communication device disclosed in an embodiment of the present application.
  • the communication device may include a processor 901 , a memory 902 , an input interface 903 , an output interface 904 and a bus 905 .
  • the memory 902 may exist independently, and may be connected to the processor 901 through the bus 905 .
  • the memory 902 can also be integrated with the processor 901. Among them, the bus 905 is used to realize the connection between these components.
  • the communication device may be an IAB node or a module (for example, a chip) in the IAB node.
  • the processor 901 is used to control the sending unit 804 to perform the operations performed in the above embodiments
  • the processor 901 is also configured to execute the operations performed by the first determining unit 801, the second determining unit 802, and the detecting unit 803 in the above embodiments
  • the input interface 903 is configured to receive information from other communication devices other than the communication device
  • the output interface 904 is configured to perform operations performed by the sending unit 804 in the foregoing embodiments.
  • the above-mentioned IAB node or modules in the IAB node can also be used to execute various methods performed by the IAB node in the above-mentioned method embodiment in FIG. 2 , which will not be repeated here.
  • FIG. 10 is a schematic structural diagram of another communication device disclosed in an embodiment of the present application.
  • the communication device may include an input interface 1001 , a logic circuit 1002 and an output interface 1003 .
  • the input interface 1001 is connected to the output interface 1003 through a logic circuit 1002 .
  • the input interface 1001 is used for receiving information from other communication devices, and the output interface 1003 is used for outputting, scheduling or sending information to other communication devices.
  • the logic circuit 1002 is configured to perform operations other than the operations of the input interface 1001 and the output interface 1003 , such as implementing the functions implemented by the processor 901 in the above-mentioned embodiments.
  • the communication device may be an IAB node or a module of the IAB node.
  • IAB node or a module of the IAB node.
  • the embodiment of the present application also discloses a computer-readable storage medium, on which instructions are stored, and when the instructions are executed, the methods in the foregoing method embodiments are executed.
  • the embodiment of the present application also discloses a computer program product including an instruction, and when the instruction is executed, the method in the above method embodiment is executed.
  • the embodiment of the present application also discloses a communication system, which includes an IAB host, an IAB node, and a terminal device.
  • a communication system which includes an IAB host, an IAB node, and a terminal device.

Landscapes

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

Abstract

Des modes de réalisation de la présente demande divulguent un procédé et un appareil de communication. Le procédé est appliqué à un nœud IAB. Le nœud IAB est connecté à un dispositif terminal au moyen d'une liaison d'accès sans fil. Le nœud IAB est connecté à un hôte IAB au moyen d'une liaison terrestre sans fil. Le procédé consiste à : déterminer, par le nœud IAB, une première plage au moyen d'une estimation de canal d'auto-interférence et d'une annulation d'auto-interférence, la première plage étant une plage d'un seuil de détection d'énergie détecté par CCA, l'auto-interférence étant l'interférence d'un premier canal vers un second canal, le premier canal étant un canal entre le nœud IAB et l'hôte IAB et le second canal étant un canal entre le nœud IAB et le dispositif terminal ; déterminer un premier seuil de détection d'énergie, le premier seuil de détection d'énergie étant dans une première plage ; effectuer une détection de CCA sur le second canal ; et, lorsque l'énergie du second canal est inférieure ou égale au premier seuil de détection d'énergie, envoyer un signal au dispositif terminal au moyen du second canal. Dans les modes de réalisation de la présente demande, l'efficacité de détection de CCA peut être augmentée.
PCT/CN2022/104582 2021-08-05 2022-07-08 Procédé et appareil de communication WO2023011106A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110897487.8 2021-08-05
CN202110897487.8A CN115942501A (zh) 2021-08-05 2021-08-05 一种通信方法及装置

Publications (1)

Publication Number Publication Date
WO2023011106A1 true WO2023011106A1 (fr) 2023-02-09

Family

ID=85155092

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2022/104582 WO2023011106A1 (fr) 2021-08-05 2022-07-08 Procédé et appareil de communication

Country Status (2)

Country Link
CN (1) CN115942501A (fr)
WO (1) WO2023011106A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105939543A (zh) * 2015-03-05 2016-09-14 中兴通讯股份有限公司 一种信道检测方法和装置
CN106063193A (zh) * 2013-12-11 2016-10-26 华为技术有限公司 用于确定空闲信道评估阈值的系统和方法
CN106413104A (zh) * 2015-08-12 2017-02-15 上海贝尔股份有限公司 Laa中基于干扰测量确定cca能量检测门限并增强下行解调的方法及设备
CN107708085A (zh) * 2017-08-29 2018-02-16 深圳市盛路物联通讯技术有限公司 一种中继器保障方法及接入点
CN112217587A (zh) * 2019-07-12 2021-01-12 北京三星通信技术研究有限公司 信道切换的方法及基站、用户设备和系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106063193A (zh) * 2013-12-11 2016-10-26 华为技术有限公司 用于确定空闲信道评估阈值的系统和方法
CN105939543A (zh) * 2015-03-05 2016-09-14 中兴通讯股份有限公司 一种信道检测方法和装置
CN106413104A (zh) * 2015-08-12 2017-02-15 上海贝尔股份有限公司 Laa中基于干扰测量确定cca能量检测门限并增强下行解调的方法及设备
CN107708085A (zh) * 2017-08-29 2018-02-16 深圳市盛路物联通讯技术有限公司 一种中继器保障方法及接入点
CN112217587A (zh) * 2019-07-12 2021-01-12 北京三星通信技术研究有限公司 信道切换的方法及基站、用户设备和系统

Also Published As

Publication number Publication date
CN115942501A (zh) 2023-04-07

Similar Documents

Publication Publication Date Title
US10863530B2 (en) Method and apparatus for adjusting timing in wireless communication system
JP7259049B2 (ja) 電力制御方法および電力制御装置
US20080151832A1 (en) Suppression of interferences between cells
US20180176890A1 (en) Device and method for transmitting/receiving signal in wireless communication system supporting unlicensed band
EP4255049A1 (fr) Procédé et appareil de communication relais
US20240040594A1 (en) Method for Determining Sidelink Feedback Resource, Terminal, and Network Side Device
US20160323835A1 (en) Method for Power Processing and Terminal
CN116326057A (zh) 用于免许可频谱中的nr侧链通信的harq反馈
WO2021249287A1 (fr) Procédé et appareil de transmission d'informations, et support d'enregistrement
US20230189290A1 (en) Information determining method, information sending method, terminal, and network side device
JP2023514730A (ja) フィードバックリソース決定方法およびフィードバックリソース決定装置
US20240187083A1 (en) Signal Transmission Method and Repeater
US20240032028A1 (en) Cg resource processing method, terminal device, and network device
CN103346986B (zh) 一种无线中继网络中的信道估计方法
WO2018166400A1 (fr) Appareil et procédé de transmission
WO2023011106A1 (fr) Procédé et appareil de communication
WO2022237751A1 (fr) Procédé et appareil de transmission de données à intervalles de temps multiples, et équipement utilisateur
WO2023004532A1 (fr) Procédé de contrôle d'accès, terminal et dispositif de réseau
WO2021022887A1 (fr) Procédé et appareil pour configurer une puissance de transmission de bloc de signaux de synchronisation/canaux de diffusion physique
CN109729586A (zh) 基于窗口的调度方法、设备和计算机可读介质
WO2022042948A1 (fr) Activation précoce de pdcch/cg basée sur le temps de survie
US20210195598A1 (en) Electronic device, wireless communication method and computer readable medium
US20230156673A1 (en) Method and apparatus for determining target resource type, and communication device
WO2024130579A1 (fr) Procédé et appareil de communication
US20230239923A1 (en) Resource transmission method, terminal device, and network device

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22851820

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22851820

Country of ref document: EP

Kind code of ref document: A1