WO2017015962A1 - 数据传输的方法和装置 - Google Patents
数据传输的方法和装置 Download PDFInfo
- Publication number
- WO2017015962A1 WO2017015962A1 PCT/CN2015/085593 CN2015085593W WO2017015962A1 WO 2017015962 A1 WO2017015962 A1 WO 2017015962A1 CN 2015085593 W CN2015085593 W CN 2015085593W WO 2017015962 A1 WO2017015962 A1 WO 2017015962A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transmission link
- transmission
- data
- station
- receiving station
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/02—Data link layer protocols
Definitions
- Embodiments of the present invention relate to communication technologies, and in particular, to a data transmission method and apparatus.
- WLAN Wireless Local Access Network
- the channel is reserved by using RTS/CTS signaling. That is, other devices within the communication range of the transmitting station and within the communication range of the receiving station cannot communicate, and are in a silent state.
- Embodiments of the present invention provide a data transmission method and apparatus to improve throughput of an entire WLAN system.
- an embodiment of the present invention provides a data transmission method, including:
- a clear sending CTS message where the CTS message includes an interference power margin, where the interference power margin is a current received signal to noise ratio of the receiving station of the first transmission link The difference in the minimum signal to noise ratio of the receiving station;
- Data transmission is performed with a receiving station of the second transmission link.
- the performing data transmission with the receiving station of the second transmission link includes:
- the control parameters include:
- Modulation coding mode MCS upper limit and / or lower limit of transmission power Modulation coding mode MCS upper limit and / or lower limit of transmission power.
- the method before the sending the RTS message to the receiving station of the second transmission link, the method further includes:
- the maximum value of the preset threshold is a ratio of the first received power to the signal to noise ratio; or the maximum value of the preset threshold is a sum of the second received power and the power increment;
- the first received power is a received power of data received by a transmitting station of the second transmission link that is determined according to historical data, and the signal-to-noise ratio is determined according to historical data.
- the transmitting station of the second transmission link correctly receives the signal to noise ratio of the data of the receiving station of the second transmission link;
- the second receiving power is that the sending station of the second transmission link receives the first transmission chain
- the power increment is a constant.
- Receiving stations for data transmission including:
- Data transmission is performed with a receiving station of the second transmission link during a data transmission period of the first transmission link.
- the request is sent to a receiving station of the second transmission link Before sending an RTS message, it also includes:
- the second transmission link is stopped.
- an embodiment of the present invention provides a data transmission method, including:
- Data transmission is performed with a receiving station of the second transmission link.
- the performing data transmission with the receiving station of the second transmission link includes:
- the control parameters include:
- Modulation coding mode MCS upper limit and / or lower limit of transmission power Modulation coding mode MCS upper limit and / or lower limit of transmission power.
- the method before the sending the RTS message to the receiving station of the second transmission link, the method further includes:
- the maximum value of the preset threshold is a ratio of the first received power to the signal to noise ratio; or the maximum value of the preset threshold is a sum of the second received power and the power increment;
- the first received power is a received power of data received by a transmitting station of the second transmission link that is determined according to historical data, and the signal-to-noise ratio is determined according to historical data.
- the transmitting station of the second transmission link correctly receives the signal to noise ratio of the data of the receiving station of the second transmission link;
- the second receiving power is that the sending station of the second transmission link receives the first transmission chain
- the power increment is a constant.
- Receiving stations for data transmission including:
- Data transmission is performed with a receiving station of the second transmission link during a data transmission period of the first transmission link.
- the request is sent to the receiving station of the second transmission link Before sending an RTS message, it also includes:
- the second transmission link is stopped.
- an embodiment of the present invention provides a data transmission method, including:
- Data transmission is performed with the receiving station of the second transmission link within the length of the data transmission time.
- the determining, according to the data transmission time length of the first transmission link, determining to activate the second transmission link includes:
- the data transmission time length of the first transmission link is greater than the time required for the second transmission link to transmit data, it is determined to activate the second transmission link.
- an apparatus for data transmission including:
- a receiving module configured to receive a clear sending CTS message sent by a receiving station of the first transmission link, where the CTS message includes an interference power margin, where the interference power margin is a current location of the receiving station of the first transmission link The difference between the received signal to noise ratio and the minimum signal to noise ratio of the receiving station;
- a processing module configured to determine to activate the second transmission link if the received power of the CTS message is less than the interference power margin
- a sending module configured to perform data transmission with a receiving station of the second transmission link.
- the sending module is specifically configured to send, to the receiving station of the second transmission link, a request to send an RTS message, where the RTS message carries an indication Control parameters used by the receiving station to transmit data;
- the control parameters include:
- Modulation coding mode MCS upper limit and / or lower limit of transmission power Modulation coding mode MCS upper limit and / or lower limit of transmission power.
- the processing module is further configured to determine that the monitored carrier power in the preset time period is continuously less than a preset threshold.
- the maximum value of the preset threshold is a ratio of the first received power to the signal to noise ratio; or the maximum value of the preset threshold is a sum of the second received power and the power increment;
- the first received power is a received power of data of a receiving station of the second transmission link that is received by the transmitting station of the second transmission link according to the historical data;
- the signal to noise ratio is a root And determining, by the historical data, that the transmitting station of the second transmission link correctly receives the signal to noise ratio of the data of the receiving station of the second transmission link;
- the second receiving power is that the sending station of the second transmission link receives the first transmission chain
- the power increment is a constant.
- the sending module is specifically configured to be used in the first transmission During the data transmission period of the link, data transmission is performed with the receiving station of the second transmission link.
- the processing module is further configured to: When the RTS frame sent by the non-first transmission link is not activated, the second transmission link is stopped.
- a fifth aspect of the present invention provides an apparatus for data transmission, including:
- a processing module configured to determine to activate the second transmission link if the clear sending CTS message sent by any receiving station is not received
- a sending module configured to perform data transmission with a receiving station of the second transmission link.
- the sending module is configured to send, by the receiving station of the second transmission link, a request to send an RTS message, where the RTS message carries an indication Control parameters used by the receiving station to transmit data;
- the control parameters include:
- Modulation coding mode MCS upper limit and / or lower limit of transmission power Modulation coding mode MCS upper limit and / or lower limit of transmission power.
- the processing module is further configured to determine that the monitored carrier power in the preset time period is continuously less than a preset threshold.
- the maximum value of the preset threshold is a ratio of the first received power to the signal to noise ratio; or the maximum value of the preset threshold is a sum of the second received power and the power increment;
- the first received power is a transmission of the second transmission link determined according to historical data
- the station receives the received power of the data of the receiving station of the second transmission link
- the signal-to-noise ratio is a receiving station of the second transmission link that receives the second transmission link correctly according to the historical data. Signal to noise ratio of the data;
- the second receiving power is that the sending station of the second transmission link receives the first transmission chain
- the power increment is a constant.
- the processing module is specifically configured to be used in the first transmission During the data transmission period of the link, data transmission is performed with the receiving station of the second transmission link.
- the processing module is further configured to receive in a preset time period.
- the RTS frame sent by the non-first transmission link is not activated, the second transmission link is stopped.
- an apparatus for data transmission including:
- a processing module configured to determine to activate a second transmission link according to a data transmission time length of the first transmission link, where the first transmission link is an activated transmission link;
- a sending module configured to perform data transmission with the receiving station of the second transmission link within the length of the data transmission time.
- the processing module is specifically configured to: if a data transmission time length of the first transmission link is greater than a time required for the second transmission link to be transmitted data And determining to activate the second transmission link.
- a seventh aspect of the present invention provides an apparatus for data transmission, including:
- a processor configured to perform the following operations:
- a clear sending CTS message where the CTS message includes an interference power margin, where the interference power margin is a current received signal to noise ratio of the receiving station of the first transmission link The difference in the minimum signal to noise ratio of the receiving station;
- Data transmission is performed with a receiving station of the second transmission link.
- An eighth aspect of the present invention provides an apparatus for data transmission, including:
- a processor configured to perform the following operations:
- Data transmission is performed with a receiving station of the second transmission link.
- a ninth aspect, an embodiment of the present invention provides an apparatus for data transmission, including:
- a processor configured to perform the following operations:
- Data transmission is performed with the receiving station of the second transmission link within the length of the data transmission time.
- the method and device for data transmission provided by the embodiment of the present invention receive a CTS message sent by a receiving station of a first transmission link through a sending station of a second transmission link, and if the receiving power of the received CTS message is less than the interference power margin, Determining that the second transmission link is activated to perform data transmission with the receiving station of the second transmission link, thereby increasing the probability of parallel link transmission under the premise of ensuring the reliability of data transmission of the first transmission link, thereby To improve the throughput of the entire WLAN system.
- FIG. 1 is a schematic diagram of distribution of a transmitting station and a receiving station of different transmission links according to the present invention
- Embodiment 1 is a schematic flowchart of Embodiment 1 of a method for data transmission according to the present invention
- Embodiment 3 is a schematic flowchart of Embodiment 2 of a method for data transmission according to the present invention
- Embodiment 4 is an access sequence diagram of Embodiment 1 of a method for data transmission according to the present invention
- FIG. 5 is a schematic diagram of a first scenario of a data transmission method according to the present invention.
- FIG. 6 is an access timing diagram corresponding to the scenario shown in FIG. 5;
- FIG. 7 is a schematic diagram of a second scenario of a data transmission method according to the present invention.
- FIG. 8 is an access timing diagram corresponding to the scenario shown in FIG. 7;
- FIG. 9 is another access timing diagram corresponding to the scenario shown in FIG. 7;
- FIG. 10 is a schematic flowchart diagram of Embodiment 2 of a method for data transmission according to the present invention.
- Embodiment 1 is a schematic structural diagram of Embodiment 1 of a device for data transmission according to the present invention.
- Embodiment 12 is a schematic structural diagram of Embodiment 2 of a device for data transmission according to the present invention.
- FIG. 13 is a schematic structural diagram of Embodiment 3 of a device for data transmission according to the present invention.
- the first transmission link means that the transmitting station of the transmission link does not listen to the RTS control information sent by any other transmitting station before transmitting the RTS control information and the receiving station transmitting the CTS control information.
- the CTS control information sent by any other receiving station that is, the transmitting station of the transmission link and the active station around the receiving station.
- the second transmission link means that the transmitting station of the transmission link listens to the RTS control information sent by other transmitting stations or the CTS control information sent by other receiving stations before transmitting the RTS control information and the receiving station to send the CTS control information, that is, the surrounding exists.
- FIG. 1 is a schematic diagram of distribution of a transmitting station and a receiving station of different transmission links according to the present invention.
- S and D are transmitting stations and receiving stations of the same transmission link
- S1 and D1 are the same transmission.
- the transmitting station and the receiving station of the link, S2 and D2 are the transmitting station and the receiving station of the same transmission link
- S1 is in the communication range of S
- S2 is in the communication range of D.
- S sends RTS control information to D and D sends CTS control information to S, it does not listen to any RTS control information sent by any sending station or CTS control information sent by any other receiving station, then the transmission between S and D
- the link is the first transmission link, and S1 listens to the RTS control information sent by S before sending the RTS control information to D1, and the transmission link between S1 and D1 is the second transmission.
- S2 sends the RTS control information to D2
- the first transmission link and the second transmission link are only relative to a certain transmission, and any transmission link between the receiving station and the transmitting station may become the first transmission link or the second transmission link.
- a transmitting station or a receiving station of a transmission link listens to an RTS message sent by a sending station of another transmission link or a CTS message sent by a receiving station, it is determined that there is an activated surrounding the transmission link.
- the transmission link that is, the transmission link is a second transmission link.
- the receiving station of the second transmission link receives the CTS message sent by the receiving station of the first transmission link, the receiving power of the CTS message is smaller than the interference power remaining in the CTS message, determining to activate the second transmission link, or If the transmitting station of the second transmission link does not receive any CTS message sent by the receiving station, it determines to activate the second transmission link; thus, in parallel with ensuring the reliability of the data transmission of the first transmission link, parallel is added. The probability of link transmission, thereby increasing the throughput of the entire WLAN system.
- FIG. 2 is a schematic flowchart of Embodiment 1 of a method for data transmission according to the present invention. As shown in FIG. 2, the embodiment is performed by a sending station of a second transmission link, and the method in this embodiment is as follows:
- S201 Receive a CTS message sent by a receiving station of the first transmission link.
- the transmitting station of the first transmission link sends an RTS message to the receiving station; the receiving station receives the RTS message sent by the transmitting station, calculates the interference power margin, and the interference power margin is the current receiving signal noise of the receiving station of the first transmission link.
- a difference from a minimum signal to noise ratio of the receiving station, wherein the minimum signal to noise ratio of the receiving station of the first transmission link is determined according to a value of a Modulation and Coding Scheme (MCS) in the standard.
- MCS Modulation and Coding Scheme
- the current receiving signal-to-noise ratio of the receiving station of the first transmission link is 35 dB, and the minimum signal-to-noise ratio that the receiving station can receive is 29 dB, and the interference power margin is 6 dB, that is, the receiving station can tolerate 6 dB of interference.
- the receiving station After receiving the Short Interframe Spacing (SIFS), the receiving station sends a CTS message to the sending station, where the CTS message carries the calculated interference power margin.
- the transmitting station of the first transmission link sends data to the receiving station.
- the data may also carry the interference power margin.
- the receiving station of the first transmission link sends an acknowledgement ACK message to the transmitting station.
- the transmitting station of the second transmission link may receive the CTS message sent by the receiving station of the first transmission link, the CTS The message contains the interference power margin of the receiving station of the first transmission link.
- the transmitting station of the second transmission link determines to activate the second transmission link if the received power of the CTS message including the interference power margin is less than the interference power margin. Describe that the transmitting station of the second transmission link is within the communication range of the receiving station of the first transmission link, but the receiving station of the receiving station of the second transmission link receives the received power of the CTS message of the receiving station of the first transmission link is less than interference.
- the received power of the data transmitted by the transmitting station of the second transmission link to the receiving station of the first transmission link is also smaller than the interference power margin, and therefore, in this case, the second transmission chain can be activated. road.
- S203 Perform data transmission with a receiving station of the second transmission link.
- the transmitting station of the second transmission link determines, according to its own interference situation, data that is correctly received by the receiving station of the second transmission link, and the receiving station of the second transmission link uses the control parameter, for example, the MCS upper limit. And / or the lower limit of the transmission power.
- the sending station of the second transmission link sends an RTS message to the receiving station of the second transmission link, where the RTS message carries a control parameter indicating that the receiving station sends data, where the control parameter includes: the MCS upper limit and / or the lower limit of the transmission power.
- the sending station of the second transmission link receives the CTS message sent by the receiving station of the first transmission link, and if the receiving power of the receiving CTS message is less than the interference power margin, determining to activate the second transmission link, and The receiving station of the second transmission link performs data transmission, thereby increasing the probability of parallel link transmission under the premise of ensuring the reliability of data transmission of the first transmission link, thereby improving the throughput of the entire WLAN system.
- FIG. 3 is a schematic flowchart of Embodiment 2 of a method for data transmission according to the present invention. As shown in FIG. 3, this embodiment is performed by a sending station of a second transmission link, and the method in this embodiment is as follows:
- the transmitting station of the second transmission link does not receive the CTS message sent by the receiving station of the first transmission link, and when the transmitting station of the second transmission link performs data transmission, the transmitted data does not transmit the first transmission.
- the receiving site of the link causes interference, or the interference power is small and can be ignored. Therefore, in this case, the second transmission link can be activated.
- S302 Perform data transmission with a receiving station of the second transmission link.
- the transmitting station of the second transmission link determines that if the clear sending CTS message sent by any receiving station is not received, it determines to activate the second transmission link, and performs data transmission with the receiving station of the second transmission link.
- the second transmission link competes before the sending station of the second transmission link sends the RTS message to the receiving station of the second transmission link.
- 2 or the second transmission link described in the embodiment shown in FIG. 3 refers to a second transmission link that is successfully contending among the plurality of second transmission links.
- the sending station of the second transmission link selects to activate the concurrent transmission time as the time t, and determines that the carrier power that is monitored during the preset time period before the time t is continuously less than the preset threshold, then activates the second transmission link, and if not, If it is determined that the carrier power monitored during the preset time period does not continue to be less than a preset threshold, the second transmission link is not activated.
- the preset threshold can be determined in the following two ways:
- the first way is:
- the maximum value of the preset threshold is the ratio of the first received power to the signal to noise ratio.
- the first received power is the received power of the data of the receiving station of the second transmission link that is received by the sending station of the second transmission link determined according to the historical data; the signal to noise ratio is determined according to historical data.
- the transmitting station of the second transmission link correctly receives the signal to noise ratio of the data of the receiving station of the second transmission link.
- the preset threshold is directly proportional to the first received power, and the larger the first received power, the stronger the anti-interference capability of the transmitting station of the second transmission link is, and the preset threshold is higher.
- the second way is:
- the maximum value of the preset threshold is a sum of the second received power and the power increment
- the second receiving power when the transmitting station of the second transmission link receives the data sent by the transmitting station of the first transmission link, the second receiving power is the transmitting station of the second transmission link receives the first The received power of the data transmitted by the transmitting station of the transmission link; when the transmitting station of the second transmission link does not receive the data sent by the transmitting station of the first transmission link, the second receiving power is 0 or the lowest solution
- the threshold is adjusted; the power increment is a constant, usually broadcast by the first transmission link or specified by the standard.
- the transmitting station of the second transmission link determines that the RTS frame transmitted by the non-first transmission link is received within a preset time period before the time t, and the second transmission link is not activated.
- the data transmission through the second transmission link must be performed during the data transmission period of the first transmission link, and the data transmission time of the first transmission link may be transmitted through the transmission station of the first transmission link.
- the transmitted RTS message or the CTS message sent by the receiving station is known.
- Embodiment 4 is an access timing diagram of Embodiment 1 of a method for data transmission according to the present invention. As shown in FIG. 4, it can be seen from the figure that the second transmission link is performed during a data transmission period of the first transmission link.
- FIG. 5 is a schematic diagram of a first scenario of a data transmission method according to the present invention.
- a transmission link between S and D is a first transmission link
- a transmission link between S3 and D3 is a second transmission chain.
- the transmitting station S3 of the second transmission link is within the communication range of the transmitting station S and the receiving station D of the first transmission link.
- S3 can receive the RTS message sent by the S, and can also receive the CTS message sent by the D.
- FIG. 6 is an access timing diagram corresponding to the scenario shown in FIG.
- FIG. 7 is a schematic diagram of a second scenario of a data transmission method according to the present invention.
- a transmission link between S and D is a first transmission link
- a transmission link between S2 and D2 is a second transmission chain.
- the transmitting station S2 of the second transmission link is within the communication range of the receiving station D of the first transmission link.
- S2 can only receive the CTS message sent by D, but can not receive the RTS message sent by S.
- FIG. 8 is an access timing diagram corresponding to the scenario shown in FIG. 7, and FIG. 9 is another corresponding to the scenario shown in FIG. Kind of access timing diagram.
- FIG. 10 is a schematic flowchart of Embodiment 2 of a method for data transmission according to the present invention.
- the method in this embodiment is as follows:
- S1001 Determine to activate the second transmission link according to the data transmission time length of the first transmission link.
- the first transmission link is an activated transmission link
- the data transmission time length of the first transmission link may be according to an RTS message sent by the sending station of the first transmission link or a network allocation vector set in a CTS message sent by the receiving station of the first transmission link (Network Allocation Vector) , referred to as: NAV) time is obtained.
- NAV Network Allocation Vector
- the data transmission time length of the first transmission link is greater than the time required for the second transmission link to transmit data, it is determined to activate the second transmission link.
- S1002 Perform data transmission with a receiving station of the second transmission link within a data transmission time length.
- the transmitting station of the second transmission link determines, according to its own interference situation, data that is correctly received by the receiving station of the second transmission link, and the receiving station of the second transmission link uses the control parameter, for example, the MCS upper limit. And / or the lower limit of the transmission power.
- the sending station of the second transmission link sends an RTS message to the receiving station of the second transmission link, where the RTS message carries a control parameter indicating that the receiving station sends data, where the control parameter includes: the MCS upper limit and / or the lower limit of the transmission power.
- the transmitting station of the second transmission link determines to activate the second transmission link for data transmission according to the data transmission time length of the first transmission link, and receives the second transmission link within the data transmission time length.
- the station performs data transmission, thereby increasing the probability of parallel link transmission under the premise of ensuring the reliability of the data transmission of the first transmission link, thereby improving the throughput of the entire WLAN system.
- FIG. 11 is a schematic structural diagram of Embodiment 1 of a device for data transmission according to the present invention.
- the device in this embodiment includes a receiving module 1101, a processing module 1102, and a sending module 1103.
- the receiving module 1101 is configured to receive a receiving station of a first transmission link.
- the cleared clear CTS message is sent, where the CTS message includes an interference power margin, where the interference power margin is the difference between the current received signal to noise ratio of the receiving station of the first transmission link and the minimum SNR of the receiving station.
- the processing module 1102 is configured to determine to activate the second transmission link if the received power of the CTS message is less than the interference power margin, and the sending module 1103 is configured to perform with the receiving station of the second transmission link. data transmission.
- the sending module 1103 is specifically configured to send, to the receiving station of the second transmission link, a request to send an RTS message, where the RTS message carries a control parameter that is used by the receiving station to send data.
- the control parameters include:
- Modulation coding mode MCS upper limit and / or lower limit of transmission power Modulation coding mode MCS upper limit and / or lower limit of transmission power.
- the processing module 1102 is further configured to determine that the monitored carrier power in the preset time period is continuously less than a preset threshold
- the maximum value of the preset threshold is a ratio of the first received power to the signal to noise ratio; or the maximum value of the preset threshold is a sum of the second received power and the power increment;
- the first received power is a received power of data received by a transmitting station of the second transmission link that is determined according to historical data, and the signal-to-noise ratio is determined according to historical data.
- the transmitting station of the second transmission link correctly receives the signal to noise ratio of the data of the receiving station of the second transmission link;
- the second receiving power is that the sending station of the second transmission link receives the first transmission chain
- the power increment is a constant.
- the sending module 1103 is specifically configured to perform data transmission with a receiving station of the second transmission link during a data transmission period of the first transmission link.
- the processing module 1102 is further configured to stop activating the second transmission link if the RTS frame sent by the non-first transmission link is received within a preset time period.
- the device in the foregoing embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and the technical effect are similar, and details are not described herein again.
- FIG. 12 is a schematic structural diagram of Embodiment 2 of a device for data transmission according to the present invention.
- the device in this embodiment includes a processing module 1201 and a sending module 1202.
- the processing module 1201 is configured to: if not receiving any clear sending CTS message sent by the receiving station. And determining to activate the second transmission link; the sending module 1202 is configured to perform data transmission with the receiving station of the second transmission link.
- the sending module 1202 is specifically configured to send, to the receiving station of the second transmission link, a request to send an RTS message, where the RTS message carries the indication of the receiving The control parameters used by the station to send data;
- the control parameters include:
- Modulation coding mode MCS upper limit and / or lower limit of transmission power Modulation coding mode MCS upper limit and / or lower limit of transmission power.
- the processing module 1201 is further configured to determine that the monitored carrier power in the preset time period is continuously less than a preset threshold
- the maximum value of the preset threshold is a ratio of the first received power to the signal to noise ratio; or the maximum value of the preset threshold is a sum of the second received power and the power increment;
- the first received power is a received power of data received by a transmitting station of the second transmission link that is determined according to historical data, and the signal-to-noise ratio is determined according to historical data.
- the transmitting station of the second transmission link correctly receives the signal to noise ratio of the data of the receiving station of the second transmission link;
- the second receiving power is that the sending station of the second transmission link receives the first transmission chain
- the power increment is a constant.
- the processing module 1201 is specifically configured to perform data transmission with the receiving station of the second transmission link during a data transmission period of the first transmission link.
- the processing module 1201 is further configured to stop activating the second transmission link if the RTS frame sent by the non-first transmission link is received within a preset time period.
- the device in the foregoing embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 3, and the implementation principle and the technical effect are similar, and details are not described herein again.
- FIG. 13 is a schematic structural diagram of Embodiment 3 of a device for data transmission according to the present invention.
- the device in this embodiment includes a processing module 1301 and a sending module 1302, where the processing module 1301 is configured according to the first transmission link.
- Data transmission time length, determining to activate the second transmission link, the first transmission link is an activated transmission link; and the sending module 1302 is configured to be in the data transmission time length and the second transmission link Receive sites for data transfer.
- the processing module 1301 is specifically configured to determine to activate the second transmission link if the data transmission time length of the first transmission link is greater than the time required for the second transmission link to transmit data.
- the device in the foregoing embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 10, and the implementation principle and technical effects are similar, and details are not described herein again.
- the present invention also provides an apparatus embodiment for data transmission, comprising: a processor configured to perform the following operations:
- a clear sending CTS message where the CTS message includes an interference power margin, where the interference power margin is a current received signal to noise ratio of the receiving station of the first transmission link The difference in the minimum signal to noise ratio of the receiving station;
- Data transmission is performed with a receiving station of the second transmission link.
- the device in the foregoing embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 2, and the implementation principle and the technical effect are similar, and details are not described herein again.
- the present invention also provides an apparatus embodiment for data transmission, comprising: a processor configured to perform the following operations:
- Data transmission is performed with a receiving station of the second transmission link.
- the device in the foregoing embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 3, and the implementation principle and the technical effect are similar, and details are not described herein again.
- the present invention also provides an apparatus embodiment for data transmission, comprising: a processor configured to perform the following operations:
- Data transmission is performed with the receiving station of the second transmission link within the length of the data transmission time.
- the device in the foregoing embodiment may be used to implement the technical solution of the method embodiment shown in FIG. 10, and the implementation principle and technical effects are similar, and details are not described herein again.
- the aforementioned program can be stored in a computer readable storage medium. When the program is executed, the steps including the above method embodiments are performed.
- the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
本发明实施例提供一种数据传输的方法和装置,通过第二传输链路的发送站点接收第一传输链路的接收站点发送的CTS消息,若接收CTS消息的接收功率小于干扰功率余量,则确定激活第二传输链路,与第二传输链路的接收站点进行数据传输,从而,提高整个WLAN***的吞吐量。
Description
本发明实施例涉及通信技术,尤其涉及一种数据传输的方法和装置。
随着无线通信技术的飞速发展,无线局域网(Wireless Local Access Network,简称:WLAN)***的应用也越来越广泛。
在WLAN***中,由于无线链路的不可靠和无线信号干扰的存在,为了保证进行通信的链路不受其他通信信号干扰,现有技术中,通过采用RTS/CTS信令交互预留信道,即,处于发送站点通信范围内与接收站点通信范围内的其他设备均不能进行通信,处于静默状态。
然而,采用现有技术的方法,降低了链路的并发传输几率,从而,降低整个WLAN***的吞吐量。
发明内容
本发明实施例提供一种数据传输的方法和装置,以提高整个WLAN***的吞吐量。
第一方面,本发明实施例提供一种数据传输的方法,包括:
接收第一传输链路的接收站点发送的清除发送CTS消息,所述CTS消息中包含干扰功率余量,所述干扰功率余量为第一传输链路的接收站点的当前的接收信噪比与接收站点的最小信噪比的差值;
若接收所述CTS消息的接收功率小于所述干扰功率余量,则确定激活第二传输链路;
与所述第二传输链路的接收站点进行数据传输。
结合第一方面,在第一方面的第一种可能的实现方式中,所述与所述第二传输链路的接收站点进行数据传输,包括:
向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据所采用的控制参数;
所述控制参数包括:
调制编码方式MCS上限和/或发送功率的下限。
结合第一方面的第一种可能的实现方式,在第一方面的第二种可能的实现方式中,所述向所述第二传输链路的接收站点发送RTS消息之前,还包括:
确定预设时间段内的监听的载波功率持续小于预设阈值;
其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者,所述预设阈值的最大值为第二接收功率和功率增量的和值;
所述第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;
当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
结合第一方面或第一方面的第一种可能的实现方式或第二种可能的实现方式,在第一方面的第三种可能的实现方式中,所述与所述第二传输链路的接收站点进行数据传输,包括:
在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
结合第一方面的第一种可能的实现方式或第二种可能的实现方式,在第一方面的第三种可能的实现方式中,所述向所述第二传输链路的接收站点发送请求发送RTS消息之前,还包括:
若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
第二方面,本发明实施例提供一种数据传输的方法,包括:
若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路;
与所述第二传输链路的接收站点进行数据传输。
结合第二方面,在第二方面的第一种可能的实现方式中,所述与所述第二传输链路的接收站点进行数据传输,包括:
向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据所采用的控制参数;
所述控制参数包括:
调制编码方式MCS上限和/或发送功率的下限。
结合第二方面的第一种可能的实现方式,在第二方面的第二种可能的实现方式中,所述向所述第二传输链路的接收站点发送RTS消息之前,还包括:
确定预设时间段内的监听的载波功率持续小于预设阈值;
其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者,所述预设阈值的最大值为第二接收功率和功率增量的和值;
所述第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;
当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
结合第二方面或第二方面的第一种可能的实现方式或第二种可能的实现方式,在第二方面的第三种可能的实现方式中,所述与所述第二传输链路的接收站点进行数据传输,包括:
在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
结合第二方面的第一种可能的实现方式或第二种可能的实现方式,在第二方面的第三种可能的实现方式中,所述向所述第二传输链路的接收站点发送请求发送RTS消息之前,还包括:
若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
第三方面,本发明实施例提供一种数据传输的方法,包括:
根据第一传输链路的数据传输时间长度,确定激活第二传输链路,所述第一传输链路为已激活的传输链路;
在所述数据传输时间长度内与所述第二传输链路的接收站点进行数据传输。
结合第三方面,在第三方面的第一种可能的实现方式中,所述根据第一传输链路的数据传输时间长度,确定激活第二传输链路,包括:
若第一传输链路的数据传输时间长度大于第二传输链路待传输数据所需的时间,则确定激活所述第二传输链路。
第四方面,本发明实施例提供一种数据传输的装置,包括:
接收模块,用于接收第一传输链路的接收站点发送的清除发送CTS消息,所述CTS消息中包含干扰功率余量,所述干扰功率余量为第一传输链路的接收站点的当前的接收信噪比与接收站点的最小信噪比的差值;
处理模块,用于若接收所述CTS消息的接收功率小于所述干扰功率余量,则确定激活第二传输链路;
发送模块,用于与所述第二传输链路的接收站点进行数据传输。
结合第四方面,在第四方面的第一种可能的实现方式中,所述发送模块具体用于向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据所采用的控制参数;
所述控制参数包括:
调制编码方式MCS上限和/或发送功率的下限。
结合第四方面的第一种可能的实现方式,在第四方面的第二种可能的实现方式中,所述处理模块还用于确定预设时间段内的监听的载波功率持续小于预设阈值;
其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者,所述预设阈值的最大值为第二接收功率和功率增量的和值;
所述第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根
据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;
当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
结合第四方面或第四方面的第一种可能的实现方式或第二种可能的实现方式,在第四方面的第三种可能的实现方式中,所述发送模块具体用于在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
结合第四方面的第一种可能的实现方式或第二种可能的实现方式,在第四方面的第三种可能的实现方式中,所述处理模块还用于若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
第五方面,本发明实施例提供一种数据传输的装置,包括:
处理模块,用于若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路;
发送模块,用于与所述第二传输链路的接收站点进行数据传输。
结合第五方面,在第五方面的第一种可能的实现方式中,所述发送模块具体用于向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据所采用的控制参数;
所述控制参数包括:
调制编码方式MCS上限和/或发送功率的下限。
结合第五方面的第一种可能的实现方式,在第五方面的第二种可能的实现方式中,所述处理模块还用于确定预设时间段内的监听的载波功率持续小于预设阈值;
其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者,所述预设阈值的最大值为第二接收功率和功率增量的和值;
所述第一接收功率为根据历史数据确定的所述第二传输链路的发送
站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;
当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
结合第五方面或第五方面的第一种可能的实现方式或第二种可能的实现方式,在第五方面的第三种可能的实现方式中,所述处理模块具体用于在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
结合第五方面的第一种可能的实现方式或第二种可能的实现方式,在第五方面的第三种可能的实现方式中,所述处理模块还用于若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
第六方面,本发明实施例提供一种数据传输的装置,包括:
处理模块,用于根据第一传输链路的数据传输时间长度,确定激活第二传输链路,所述第一传输链路为已激活的传输链路;
发送模块,用于在所述数据传输时间长度内与所述第二传输链路的接收站点进行数据传输。
结合第六方面,在第六方面的第一种可能的实现方式中,所述处理模块具体用于若第一传输链路的数据传输时间长度大于第二传输链路待传输数据所需的时间,则确定激活所述第二传输链路。
第七方面,本发明实施例提供一种数据传输的装置,包括:
处理器,所述处理器配置为执行如下操作:
接收第一传输链路的接收站点发送的清除发送CTS消息,所述CTS消息中包含干扰功率余量,所述干扰功率余量为第一传输链路的接收站点的当前的接收信噪比与接收站点的最小信噪比的差值;
若接收所述CTS消息的接收功率小于所述干扰功率余量,则确定激活
第二传输链路;
与所述第二传输链路的接收站点进行数据传输。
第八方面,本发明实施例提供一种数据传输的装置,包括:
处理器,所述处理器配置为执行如下操作:
若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路;
与所述第二传输链路的接收站点进行数据传输。
第九方面,本发明实施例提供一种数据传输的装置,包括:
处理器,所述处理器配置为执行如下操作:
根据第一传输链路的数据传输时间长度,确定激活第二传输链路,所述第一传输链路为已激活的传输链路;
在所述数据传输时间长度内与所述第二传输链路的接收站点进行数据传输。
本发明实施例提供的数据传输的方法和装置,通过第二传输链路的发送站点接收第一传输链路的接收站点发送的CTS消息,若接收CTS消息的接收功率小于干扰功率余量,则确定激活第二传输链路,与第二传输链路的接收站点进行数据传输,从而,在保证第一传输链路的数据传输的可靠性的前提下,增加了并行链路传输的几率,从而,提高整个WLAN***的吞吐量。
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明的不同的传输链路的发送站点和接收站点的分布示意图;
图2为本发明数据传输的方法实施例一的流程示意图;
图3为本发明数据传输的方法实施例二的流程示意图;
图4为本发明数据传输的方法实施例一的接入时序图;
图5为本发明数据传输方法的第一种场景示意图;
图6为图5所示场景对应的接入时序图;
图7为本发明数据传输方法的第二种场景示意图;
图8为图7所示场景对应的一种接入时序图;
图9为图7所示场景对应的另一种接入时序图;
图10为本发明数据传输的方法实施例二的流程示意图;
图11为本发明数据传输的装置实施例一的结构示意图;
图12为本发明数据传输的装置实施例二的结构示意图;
图13为本发明数据传输的装置实施例三的结构示意图。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
本发明下述各实施例涉及的第一传输链路是指传输链路的发送站点在发送RTS控制信息与接收站点发送CTS控制信息前,均没有监听到其他任何发送站点发送的RTS控制信息或其他任何接收站点发送的CTS控制信息,即传输链路的发送站点和接收站点周围没有活跃的站点。第二传输链路是指传输链路的发送站点在发送RTS控制信息与接收站点发送CTS控制信息前,监听到其他发送站点发送的RTS控制信息或其他接收站点发送的CTS控制信息,即周围存在已经调度的传输链路。
图1为本发明的不同的传输链路的发送站点和接收站点的分布示意图,如图1所示,S和D为同一条传输链路的发送站点和接收站点,S1和D1为同一条传输链路的发送站点和接收站点,S2和D2为同一条传输链路的发送站点和接收站点,S1处于S的通信范围内,S2在D的通信范围内。若S向D发送RTS控制信息和D向S发送CTS控制信息之前,均未监听到其他任何发送站点发送的RTS控制信息或者其他任何接收站点发送的CTS控制信息,则S和D之间的传输链路为第一传输链路,S1向D1发送RTS控制信息之前监听到S发送的RTS控制信息,则S1和D1之间的传输链路为第二传输
链路,S2向D2发送RTS控制信息之前,监听到D发送的CTS控制信息,则S2和D2之间的传输链路为第二传输链路。
第一传输链路和第二传输链路只是相对于某一次传输而言,任何接收站点和发送站点之间的传输链路均可能成为第一传输链路或第二传输链路。
本发明各实施例中,若某个传输链路的发送站点或接收站点监听到其他传输链路的发送站点发送的RTS消息或接收站点发送的CTS消息,确定该传输链路周围存在已激活的传输链路,即该传输链路为第二传输链路。第二传输链路的发送站点若接收到第一传输链路的接收站点的发送的CTS消息的接收功率小于CTS消息中携带的干扰功率余量,则确定激活第二传输链路,或者,第二传输链路的发送站点若未接收到任何接收站点发送的CTS消息,则确定激活第二传输链路;从而,在保证第一传输链路的数据传输的可靠性的前提下,增加了并行链路传输的几率,从而,提高整个WLAN***的吞吐量。
下面以具体地实施例对本发明的技术方案进行详细说明。下面这几个具体的实施例可以相互结合,对于相同或相似的概念或过程可能在某些实施例不再赘述。
图2为本发明数据传输的方法实施例一的流程示意图,如图2所示,本实施例由第二传输链路的发送站点执行,本实施例的方法如下:
S201:接收第一传输链路的接收站点发送的CTS消息。
第一传输链路的发送站点向接收站点发送RTS消息;接收站点接收发送站点发送的RTS消息,计算干扰功率余量,干扰功率余量为第一传输链路的接收站点的当前的接收信噪比与接收站点的最小信噪比的差值,其中,第一传输链路的接收站点的最小信噪比是标准中根据调制编码方式(Modulation and Coding Scheme,简称:MCS)的一个值确定的,例如:第一传输链路的接收站点的当前的接收信噪比为35dB,接收站点能够接收的最小信噪比为29dB,则干扰功率余量为6dB,即接收站点还能容忍6dB的干扰。接收站点等待短帧间间隔(Short Interframe Spacing,简称:SIFS)后,向发送站点发送CTS消息,CTS消息中携带上述计算的干扰功率余量。第一传输链路的发送站点接收到CTS消息之后,向接收站点发送数据,可选地,数据中也可以携带上述干扰功率余量。数据传输结束后,
第一传输链路的接收站点向发送站点发送确认ACK消息。
第二传输链路的发送站点若在第一传输链路的接收站点的通信范围内,则第二传输链路的发送站点可以接收到第一传输链路的接收站点发送的CTS消息,上述CTS消息中包含第一传输链路的接收站点的干扰功率余量。
S202:若接收CTS消息的接收功率小于干扰功率余量,则确定激活第二传输链路。
第二传输链路的发送站点若接收包含干扰功率余量的CTS消息的接收功率小于干扰功率余量,则确定激活第二传输链路。说明第二传输链路的发送站点在第一传输链路的接收站点的通信范围内,但是第二传输链路的发送站点接收到第一传输链路的接收站点的CTS消息的接收功率小于干扰功率余量,那么,第二传输链路的发送站点发送的数据到达第一传输链路的接收站点的接收功率也会小于干扰功率余量,因此,在这种情况,可以激活第二传输链路。
S203:与第二传输链路的接收站点进行数据传输。
具体地,第二传输链路的发送站点根据自身的干扰情况确定正确接收第二传输链路的接收站点发送的数据,第二传输链路的接收站点发送数据所要采用控制参数,例如:MCS上限和/或发送功率的下限。
第二传输链路的发送站点向第二传输链路的接收站点发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据的控制参数,其中,所述控制参数包括:所MCS上限和/或发送功率的下限。
本实施例,通过第二传输链路的发送站点接收第一传输链路的接收站点发送的CTS消息,若接收CTS消息的接收功率小于干扰功率余量,则确定激活第二传输链路,与第二传输链路的接收站点进行数据传输,从而,在保证第一传输链路的数据传输的可靠性的前提下,增加了并行链路传输的几率,从而,提高整个WLAN***的吞吐量。
图3为本发明数据传输的方法实施例二的流程示意图,如图3所示,本实施例由第二传输链路的发送站点执行,本实施例的方法如下:
S301:若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路。
若未接收到任何接收站点发送的CTS消息,说明第二传输链路的发送站点不在第一传输链路的接收站点的通信范围内,或处于第一传输链路的接收站点的通信范围的边缘位置,第二传输链路的发送站点接收不到第一传输链路的接收站点发送的CTS消息,则第二传输链路的发送站点进行数据传输时,发送的数据也不会对第一传输链路的接收站点造成干扰,或者干扰功率很小,可以忽略。因此,在这种情况下,可以激活第二传输链路。
S302:与第二传输链路的接收站点进行数据传输。
此步骤参照S203的详细描述,此处不再赘述。
本实施例,通过第二传输链路的发送站点判断若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路,与第二传输链路的接收站点进行数据传输,从而,在保证第一传输链路的数据传输的可靠性的前提下,增加了并行链路传输的几率,从而,提高整个WLAN***的吞吐量。
在上述实施例中,若存在多个第二传输链路,则第二传输链路的发送站点向第二传输链路的接收站点发送RTS消息之前,多个第二传输链路进行竞争,图2或图3所示实施例所描述的第二传输链路是指多个第二传输链路中竞争成功的第二传输链路。
第二传输链路的发送站点选择激活并发传输的时间为时刻t,确定在时刻t前的预设时间段内监听的载波功率持续小于预设阈值,则激活第二传输链路,若否,确定预设时间段内监听的载波功率未持续小于预设阈值,则不激活第二传输链路。
其中,预设阈值可以通过以下两种方式确定:
第一种方式为:
预设阈值的最大值为第一接收功率与信噪比的比值。
其中:第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比。在第一种方式中,预设阈值与第一接收功率成正比,第一接收功率越大,说明第二传输链路的发送站点的抗干扰能力越强,预设阈值越高。
第二种方式为:
预设阈值的最大值为第二接收功率和功率增量的和值;
其中:当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数,通常由第一传输链路广播或者由标准中进行规定。
第二传输链路的发送站点确定在时刻t前的预设时间段内接收到非第一传输链路发送的RTS帧,则不激活所述第二传输链路。
在上述实施例中,通过第二传输链路进行数据传输必须在第一传输链路的数据传输时间段内进行,第一传输链路的数据传输时间,可以通过第一传输链路的发送站点发送的RTS消息或者接收站点发送的CTS消息获知。
图4为本发明数据传输的方法实施例一的接入时序图,如图4所示,从图中可以看出,第二传输链路在第一传输链路的数据传输时间段内进行。
图5为本发明数据传输方法的第一种场景示意图,在图5中,S和D之间的传输链路为第一传输链路,S3和D3之间的传输链路为第二传输链路,第二传输链路的发送站点S3处于第一传输链路的发送站点S和接收站点D的通信范围内。S3可以接收到S发送的RTS消息,也可以接收到D发送的CTS消息,图6为图5所示场景对应的接入时序图。
图7为本发明数据传输方法的第二种场景示意图,在图7中,S和D之间的传输链路为第一传输链路,S2和D2之间的传输链路为第二传输链路,第二传输链路的发送站点S2处于第一传输链路的接收站点D的通信范围内。S2只能接收到D发送的CTS消息,而接收不到S发送的RTS消息;图8为图7所示场景对应的一种接入时序图,图9为图7所示场景对应的另一种接入时序图。
图10为本发明数据传输的方法实施例二的流程示意图,本实施例的方法如下:
S1001:根据第一传输链路的数据传输时间长度,确定激活第二传输链路。
所述第一传输链路为已激活的传输链路;
其中,第一传输链路的数据传输时间长度可以根据第一传输链路的发送站点发送的RTS消息或者第一传输链路的接收站点发送的CTS消息中的设置的网络分配矢量(Network Allocation Vector,简称:NAV)时长获得。
若第一传输链路的数据传输时间长度大于第二传输链路待传输数据所需的时间,则确定激活所述第二传输链路。
S1002:在数据传输时间长度内与第二传输链路的接收站点进行数据传输。
具体地,第二传输链路的发送站点根据自身的干扰情况确定正确接收第二传输链路的接收站点发送的数据,第二传输链路的接收站点发送数据所要采用控制参数,例如:MCS上限和/或发送功率的下限。
第二传输链路的发送站点向第二传输链路的接收站点发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据的控制参数,其中,所述控制参数包括:所MCS上限和/或发送功率的下限。
本实施例,通过第二传输链路的发送站点根据第一传输链路的数据传输时间长度,确定激活第二传输链路进行数据传输,在数据传输时间长度内与第二传输链路的接收站点进行数据传输,从而,在保证第一传输链路的数据传输的可靠性的前提下,增加了并行链路传输的几率,从而,提高整个WLAN***的吞吐量。
图11为本发明数据传输的装置实施例一的结构示意图,本实施例的装置包括接收模块1101、处理模块1102和发送模块1103,其中,接收模块1101用于接收第一传输链路的接收站点发送的清除发送CTS消息,所述CTS消息中包含干扰功率余量,所述干扰功率余量为第一传输链路的接收站点的当前的接收信噪比与接收站点的最小信噪比的差值;处理模块1102用于若接收所述CTS消息的接收功率小于所述干扰功率余量,则确定激活第二传输链路;发送模块1103用于与所述第二传输链路的接收站点进行数据传输。
在上述实施例中,所述发送模块1103具体用于向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据所采用的控制参数;
所述控制参数包括:
调制编码方式MCS上限和/或发送功率的下限。
在上述实施例中,所述处理模块1102还用于确定预设时间段内的监听的载波功率持续小于预设阈值;
其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者,所述预设阈值的最大值为第二接收功率和功率增量的和值;
所述第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;
当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
在上述实施例中,所述发送模块1103具体用于在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
在上述实施例中,所述处理模块1102还用于若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
上述实施例的装置可用于执行图2所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图12为本发明数据传输的装置实施例二的结构示意图,本实施例的装置包括处理模块1201和发送模块1202,其中,处理模块1201用于若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路;发送模块1202用于与所述第二传输链路的接收站点进行数据传输。
在上述实施例中,所述发送模块1202具体用于向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收
站点发送数据所采用的控制参数;
所述控制参数包括:
调制编码方式MCS上限和/或发送功率的下限。
在上述实施例中,所述处理模块1201还用于确定预设时间段内的监听的载波功率持续小于预设阈值;
其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者,所述预设阈值的最大值为第二接收功率和功率增量的和值;
所述第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;
当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
在上述实施例中,所述处理模块1201具体用于在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
在上述实施例中,所述处理模块1201还用于若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
上述实施例的装置可用于执行图3所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
图13为本发明数据传输的装置实施例三的结构示意图,如图13所示,本实施例的装置包括处理模块1301和发送模块1302,其中,处理模块1301用于根据第一传输链路的数据传输时间长度,确定激活第二传输链路,所述第一传输链路为已激活的传输链路;发送模块1302用于在所述数据传输时间长度内与所述第二传输链路的接收站点进行数据传输。
在上述实施例中,所述处理模块1301具体用于若第一传输链路的数据传输时间长度大于第二传输链路待传输数据所需的时间,则确定激活所述第二传输链路。
上述实施例的装置可用于执行图10所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
本发明还提供一种数据传输的装置实施例,包括:处理器,所述处理器配置为执行如下操作:
接收第一传输链路的接收站点发送的清除发送CTS消息,所述CTS消息中包含干扰功率余量,所述干扰功率余量为第一传输链路的接收站点的当前的接收信噪比与接收站点的最小信噪比的差值;
若接收所述CTS消息的接收功率小于所述干扰功率余量,则确定激活第二传输链路;
与所述第二传输链路的接收站点进行数据传输。
上述实施例的装置可用于执行图2所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
本发明还提供一种数据传输的装置实施例,包括:处理器,所述处理器配置为执行如下操作:
若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路;
与所述第二传输链路的接收站点进行数据传输。
上述实施例的装置可用于执行图3所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
本发明还提供一种数据传输的装置实施例,包括:处理器,所述处理器配置为执行如下操作:
根据第一传输链路的数据传输时间长度,确定激活第二传输链路,所述第一传输链路为已激活的传输链路;
在所述数据传输时间长度内与所述第二传输链路的接收站点进行数据传输。
上述实施例的装置可用于执行图10所示方法实施例的技术方案,其实现原理和技术效果类似,此处不再赘述。
本领域普通技术人员可以理解:实现上述各方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成。前述的程序可以存储于一计算机可读取存储介质中。该程序在执行时,执行包括上述各方法实施例的步
骤;而前述的存储介质包括:ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (27)
- 一种数据传输的方法,其特征在于,包括:接收第一传输链路的接收站点发送的清除发送CTS消息,所述CTS消息中包含干扰功率余量,所述干扰功率余量为第一传输链路的接收站点的当前的接收信噪比与接收站点的最小信噪比的差值;若接收所述CTS消息的接收功率小于所述干扰功率余量,则确定激活第二传输链路;与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求1所述的方法,其特征在于,所述与所述第二传输链路的接收站点进行数据传输,包括:向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据所采用的控制参数;所述控制参数包括:调制编码方式MCS上限和/或发送功率的下限。
- 根据权利要求2所述的方法,其特征在于,所述向所述第二传输链路的接收站点发送RTS消息之前,还包括:确定预设时间段内的监听的载波功率持续小于预设阈值;其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者,所述预设阈值的最大值为第二接收功率和功率增量的和值;所述第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
- 根据权利要求1~3任一项所述的方法,其特征在于,所述与所述第二传输链路的接收站点进行数据传输,包括:在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求2或3所述的方法,其特征在于,所述向所述第二传输链路的接收站点发送请求发送RTS消息之前,还包括:若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
- 一种数据传输的方法,其特征在于,包括:若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路;与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求6所述的方法,其特征在于,所述与所述第二传输链路的接收站点进行数据传输,包括:向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据所采用的控制参数;所述控制参数包括:调制编码方式MCS上限和/或发送功率的下限。
- 根据权利要求7所述的方法,其特征在于,所述向所述第二传输链路的接收站点发送RTS消息之前,还包括:确定预设时间段内的监听的载波功率持续小于预设阈值;其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者,所述预设阈值的最大值为第二接收功率和功率增量的和值;所述第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
- 根据权利要求6~8任一项所述的方法,其特征在于,所述与所述第二传输链路的接收站点进行数据传输,包括:在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求7或8所述的方法,其特征在于,所述向所述第二传输链路的接收站点发送请求发送RTS消息之前,还包括:若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
- 一种数据传输的方法,其特征在于,包括:根据第一传输链路的数据传输时间长度,确定激活第二传输链路,所述第一传输链路为已激活的传输链路;在所述数据传输时间长度内与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求11所述的方法,其特征在于,所述根据第一传输链路的数据传输时间长度,确定激活第二传输链路,包括:若第一传输链路的数据传输时间长度大于第二传输链路待传输数据所需的时间,则确定激活所述第二传输链路。
- 一种数据传输的装置,其特征在于,包括:接收模块,用于接收第一传输链路的接收站点发送的清除发送CTS消息,所述CTS消息中包含干扰功率余量,所述干扰功率余量为第一传输链路的接收站点的当前的接收信噪比与接收站点的最小信噪比的差值;处理模块,用于若接收所述CTS消息的接收功率小于所述干扰功率余量,则确定激活第二传输链路;发送模块,用于与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求13所述的装置,其特征在于,所述发送模块具体用于向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据所采用的控制参数;所述控制参数包括:调制编码方式MCS上限和/或发送功率的下限。
- 根据权利要求14所述的装置,其特征在于,所述处理模块还用 于确定预设时间段内的监听的载波功率持续小于预设阈值;其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者,所述预设阈值的最大值为第二接收功率和功率增量的和值;所述第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
- 根据权利要求13~15任一项所述的装置,其特征在于,所述发送模块具体用于在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求14或15所述的装置,其特征在于,所述处理模块还用于若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
- 一种数据传输的装置,其特征在于,包括:处理模块,用于若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路;发送模块,用于与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求18所述的装置,其特征在于,所述发送模块具体用于向所述第二传输链路的接收站点发送请求发送RTS消息,所述RTS消息中携带指示所述接收站点发送数据所采用的控制参数;所述控制参数包括:调制编码方式MCS上限和/或发送功率的下限。
- 根据权利要求19所述的装置,其特征在于,所述处理模块还用于确定预设时间段内的监听的载波功率持续小于预设阈值;其中,所述预设阈值的最大值为第一接收功率与信噪比的比值;或者, 所述预设阈值的最大值为第二接收功率和功率增量的和值;所述第一接收功率为根据历史数据确定的所述第二传输链路的发送站点接收到第二传输链路的接收站点的数据的接收功率;所述信噪比为根据历史数据确定的所述第二传输链路的发送站点正确接收所述第二传输链路的接收站点的数据的信噪比;当第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为所述第二传输链路的发送站点接收到所述第一传输链路的发送站点发送的数据的接收功率;当第二传输链路的发送站点未接收到所述第一传输链路的发送站点发送的数据,所述第二接收功率为0或者最低解调门限;所述功率增量为常数。
- 根据权利要求18~20任一项所述的装置,其特征在于,所述处理模块具体用于在第一传输链路的数据传输时间段内,与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求19或20所述的装置,其特征在于,所述处理模块还用于若在预设时间段内接收到非第一传输链路发送的RTS帧,则停止激活所述第二传输链路。
- 一种数据传输的装置,其特征在于,包括:处理模块,用于根据第一传输链路的数据传输时间长度,确定激活第二传输链路,所述第一传输链路为已激活的传输链路;发送模块,用于在所述数据传输时间长度内与所述第二传输链路的接收站点进行数据传输。
- 根据权利要求23所述的装置,其特征在于,所述处理模块具体用于若第一传输链路的数据传输时间长度大于第二传输链路待传输数据所需的时间,则确定激活所述第二传输链路。
- 一种数据传输的装置,其特征在于,包括:处理器,所述处理器配置为执行如下操作:接收第一传输链路的接收站点发送的清除发送CTS消息,所述CTS消息中包含干扰功率余量,所述干扰功率余量为第一传输链路的接收站点的当前的接收信噪比与接收站点的最小信噪比的差值;若接收所述CTS消息的接收功率小于所述干扰功率余量,则确定激活 第二传输链路;与所述第二传输链路的接收站点进行数据传输。
- 一种数据传输的装置,其特征在于,包括:处理器,所述处理器配置为执行如下操作:若未接收到任何接收站点发送的清除发送CTS消息,则确定激活第二传输链路;与所述第二传输链路的接收站点进行数据传输。
- 一种数据传输的装置,其特征在于,包括:处理器,所述处理器配置为执行如下操作:根据第一传输链路的数据传输时间长度,确定激活第二传输链路,所述第一传输链路为已激活的传输链路;在所述数据传输时间长度内与所述第二传输链路的接收站点进行数据传输。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2015/085593 WO2017015962A1 (zh) | 2015-07-30 | 2015-07-30 | 数据传输的方法和装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CN2015/085593 WO2017015962A1 (zh) | 2015-07-30 | 2015-07-30 | 数据传输的方法和装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2017015962A1 true WO2017015962A1 (zh) | 2017-02-02 |
Family
ID=57883992
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2015/085593 WO2017015962A1 (zh) | 2015-07-30 | 2015-07-30 | 数据传输的方法和装置 |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2017015962A1 (zh) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101238744A (zh) * | 2005-06-10 | 2008-08-06 | 松下电器产业株式会社 | 无线通信装置及无线通信方法 |
EP2326029A1 (en) * | 2009-11-23 | 2011-05-25 | Lakeside Labs GmbH | Cooperative relay scheme having backward compatibility |
CN102685777A (zh) * | 2012-04-23 | 2012-09-19 | 西安电子科技大学 | 基于干扰容限的数据并发传输***及方法 |
CN103858510A (zh) * | 2011-09-06 | 2014-06-11 | 高通股份有限公司 | 用于使得多个设备能够共享数据传输时段的方法和装置 |
-
2015
- 2015-07-30 WO PCT/CN2015/085593 patent/WO2017015962A1/zh active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101238744A (zh) * | 2005-06-10 | 2008-08-06 | 松下电器产业株式会社 | 无线通信装置及无线通信方法 |
EP2326029A1 (en) * | 2009-11-23 | 2011-05-25 | Lakeside Labs GmbH | Cooperative relay scheme having backward compatibility |
CN103858510A (zh) * | 2011-09-06 | 2014-06-11 | 高通股份有限公司 | 用于使得多个设备能够共享数据传输时段的方法和装置 |
CN102685777A (zh) * | 2012-04-23 | 2012-09-19 | 西安电子科技大学 | 基于干扰容限的数据并发传输***及方法 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3317992B1 (en) | System and method for backoff procedures for licensed-assisted access | |
US8831607B2 (en) | Reverse link other sector communication | |
CN109496456B (zh) | 非授权频谱上的信道检测方法、装置和存储介质 | |
JP5964464B2 (ja) | D2d通信用の方法と装置 | |
JP5687771B2 (ja) | 干渉のある場合の動的帯域幅制御 | |
WO2021203974A1 (en) | User equipment and sidelink resource exclusion method | |
US20160309480A1 (en) | System and method for reducing collisions in wireless networks | |
US20160323881A1 (en) | Techniques for using alternate channels for acknowledgement messages | |
WO2017197949A1 (zh) | 一种数据传输的控制方法及相关设备 | |
JP2018529295A (ja) | 信頼性のあるチャネル支援型ハイブリッドarq | |
US11582731B2 (en) | Uplink control information transmission method and device | |
ES2927128T3 (es) | Indicación de uso del destinatario para una frecuencia portadora en BFD/IBFD | |
KR20160088368A (ko) | 데이터 송신 방법, 사용자 장비, 및 기지국 | |
CN105337705B (zh) | 数据发送反馈、数据发送方法及装置 | |
US20180027452A1 (en) | Base station, terminal, and wireless communication system | |
WO2018028675A1 (zh) | 随机接入信号配置方法、装置、设备、***和存储介质 | |
CN104507170A (zh) | 一种资源调度方法和装置 | |
WO2020147737A1 (zh) | 波束恢复方法、装置、介质和设备 | |
WO2017185896A1 (zh) | 调度信息的处理、发送方法、装置、***及存储介质 | |
WO2017015962A1 (zh) | 数据传输的方法和装置 | |
JP2016541168A (ja) | Lteシステムの距離測定装置干渉抵抗能力を向上させる方法、装置および記憶媒体 | |
US20220046681A1 (en) | Method and device for reporting uplink control information, storage medium, and user equipment | |
KR101192035B1 (ko) | 셀룰러 업링크 전송들을 관리하기 위한 방법 및 장치 | |
WO2024062878A1 (en) | Artificial intelligence (ai)/machine learning (ml) for csi feedback enhancement | |
WO2024062880A1 (en) | Artificial intelligence (ai)/machine learning (ml) for positioning accuracy enhancements |
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: 15899314 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: 15899314 Country of ref document: EP Kind code of ref document: A1 |