DATA TRANSMISSION METHOD AND APPARATUS

• US 20170325129A1
• Filed: 07/24/2017
• Published: 11/09/2017
• Est. Priority Date: 05/29/2015
• Status: Active Grant

• Current Assignee: Tencent Technology Company Limited (Tencent Holdings Limited)
• Original Assignee: Tencent Technology Company Limited (Tencent Holdings Limited)
• Inventors: ZHU, LIUSONG, SONG, QING, LEI, MENGLONG, ZHU, JIANPING
• Granted Patent: US 10,462,707 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 41/0893 Assignment of logical groups to network elements
• CPC Class Codes: H04L 41/0894 Policy-based network configuration management
• CPC Class Codes: H04L 41/0896 Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities flow or congestion control using dynamic resource allocation, e.g. in-call renegotiation, H04L47/76
• CPC Class Codes: H04L 43/0829 Packet loss
• CPC Class Codes: H04L 43/0835 One way packet loss
• CPC Class Codes: H04L 43/0864 Round trip delays
• CPC Class Codes: H04L 47/11 Identifying congestion
• CPC Class Codes: H04L 47/193 at the transport layer, e.g. TCP related
• CPC Class Codes: H04L 47/283 in response to processing delays, e.g. caused by jitter or round trip time [RTT]
• CPC Class Codes: H04W 28/20 Negotiating bandwidth

Abstract

Embodiments of the present disclosure disclose a data transmission method and apparatus, and belong to the field of Internet technologies. The method includes: obtaining interaction information of a transmission link of a current moment; analyzing the interaction information, to obtain link status information corresponding to the interaction information; determining an available bandwidth for current data transmission according to the link status information that corresponds to the interaction information and link status information that corresponds to historical interaction information of the transmission link; and transmitting a data packet to a data receive end according to the available bandwidth. In the embodiments of the present disclosure, data transmission is performed based on the TCP Protocol, neither a data receive end nor a data transmit end needs to support an additional protocol, and applicability is relatively strong.

Claims

1. A data transmission method, comprising:

obtaining interaction information of a transmission link of a current moment;

analyzing the interaction information, to obtain link status information corresponding to the interaction information;

determining an available bandwidth for current data transmission according to the link status information that corresponds to the interaction information and link status information that corresponds to historical interaction information of the transmission link; and

transmitting a data packet to a data receive end according to the available bandwidth.

2. The method according to claim 1, wherein the link status information comprises a round-trip time (RTT);

and

the determining an available bandwidth for current data transmission further comprises;

determining, from an RTT of the interaction information and an RTT of the historical interaction information, a target RTT satisfying a preset short-delay condition; and

determining the available bandwidth for current data transmission according to the target RTT and a data transmission amount that corresponds to the target RTT.

3. The method according to claim 1, wherein the link status information comprises delay information, wherein the delay information comprises a round-trip time RTT and an RTT volatility rate;

and

the determining an available bandwidth for current data transmission further comprises;

selecting a target RTT from an RTT of the interaction information and an RTT of the historical interaction information according to an RTT volatility rate of the interaction information and an RTT volatility rate of the historical interaction information; and

determining the available bandwidth for current data transmission according to the target RTT and a data transmission amount that corresponds to the target RTT.

4. The method according to claim 3, wherein determining the available bandwidth further comprises:

selecting a smallest RTT among the RTT of the interaction information and one or more RTTs of the historical interaction information as the target RTT; and

determining the available bandwidth as a multiplication result of the target RTT and the data transmission amount corresponding to the target RTT.

5. The method according to claim 1, wherein the transmitting a data packet to a data receive end according to the available bandwidth comprises:

analyzing the interaction information, to obtain packet loss information corresponding to the interaction information;

determining current network congestion status information according to the packet loss information that corresponds to the interaction information and packet loss information that corresponds to the historical interaction information;

adjusting the determined available bandwidth according to the current network congestion status information; and

transmitting the data packet to the data receive end according to the adjusted available bandwidth.

6. The method according to claim 1, after the transmitting a data packet to a data receive end according to the available bandwidth, further comprising:

analyzing the interaction information, to obtain packet loss information corresponding to the interaction information;

determining current network congestion status information according to the packet loss information that corresponds to the interaction information and packet loss information that corresponds to the historical interaction information;

adjusting the available bandwidth according to the current network congestion status information; and

performing transmission according to the adjusted available bandwidth when a subsequent data packet is transmitted to the data receive end next time.

7. The method according to claim 1, after the transmitting a data packet to a data receive end according to the available bandwidth, further comprising:

sending a packet loss probe message to the data receive end when it is detected that a duration during which no data packet is transmitted reaches a preset duration and a data packet for which no response message is returned exists in transmitted data packets, wherein the packet loss probe message carries last byte information of a last transmitted data packet;

determining a lost data packet from the transmitted data packets according to a response message corresponding to the packet loss probe message, when the response message is received, wherein the response message carries last byte information of a last data packet received by the data receive end and the last byte information of the last transmitted data packet; and

retransmitting the lost data packet.

8. The method according to claim 1, after the transmitting a data packet to a data receive end according to the available bandwidth, further comprising:

determining first weighted packet loss information according to packet loss information of the interaction information and packet loss information of the historical interaction information of the transmission link;

determining, according to a prestored correspondence between weighted packet loss information and retransmission duration, first retransmission duration corresponding to the first weighted packet loss information; and

retransmitting the data packet when the first retransmission duration is reached.

9. The method according to claim 1, wherein the transmitting a data packet to a data receive end according to the available bandwidth comprises:

determining a first weighted available bandwidth according to the available bandwidth and a parallel historical available bandwidth; and

transmitting the data packet to the data receive end based on a preset first data packet parallel transmission quantity, if the weighted available bandwidth is greater than a preset bandwidth threshold;

or transmitting the data packet to the data receive end based on a preset second data packet parallel transmission quantity, if the weighted available bandwidth is less than or equal to the preset bandwidth threshold, wherein the first data packet parallel transmission quantity is greater than the second data packet parallel transmission quantity.

10. A server, the server comprising:

one or more processors; and

a memory,

the memory storing one or more programs, the one or more programs being configured to be executed by the one or more processors, and the one or more programs comprising instructions used for performing the following operations;

obtaining interaction information of a transmission link of a current moment;

analyzing the interaction information, to obtain link status information corresponding to the interaction information;

determining an available bandwidth for current data transmission according to the link status information that corresponds to the interaction information and link status information that corresponds to historical interaction information of the transmission link; and

transmitting a data packet to a data receive end according to the available bandwidth.

11. The server according to claim 10, wherein the link status information comprises a round-trip time (RTT);

the determining an available bandwidth for current data transmission further comprises;

determining, from an RTT of the interaction information and an RTT of the historical interaction information, a target RTT satisfying a preset short-delay condition; and

determining the available bandwidth for current data transmission according to the target RTT and a data transmission amount that corresponds to the target RTT.

12. The server according to claim 10, wherein the link status information comprises delay information, wherein the delay information comprises a round-trip time RTT and an RTT volatility rate;

and

the one or more programs further comprise instructions used for performing the following operations;

selecting a target RTT from an RTT of the interaction information and an RTT of the historical interaction information according to an RTT volatility rate of the interaction information and an RTT volatility rate of the historical interaction information; and

determining the available bandwidth for current data transmission according to the target RTT and a data transmission amount that corresponds to the target RTT.

13. The server according to claim 12, wherein determining the available bandwidth further comprises:

selecting a smallest RTT among the RTT of the interaction information and one or more RTTs of the historical interaction information as the target RTT; and

determining the available bandwidth as a multiplication result of the target RTT and the data transmission amount corresponding to the target RTT.

14. The server according to claim 10, wherein the one or more programs further comprise instructions used for performing the following operations:

analyzing the interaction information, to obtain packet loss information corresponding to the interaction information;

determining current network congestion status information according to the packet loss information that corresponds to the interaction information and packet loss information that corresponds to the historical interaction information;

adjusting the determined available bandwidth according to the current network congestion status information; and

transmitting the data packet to the data receive end according to the adjusted available bandwidth.

15. The server according to claim 10, wherein the one or more programs further comprise instructions used for performing the following operations:

analyzing the interaction information, to obtain packet loss information corresponding to the interaction information;

determining current network congestion status information according to the packet loss information that corresponds to the interaction information and packet loss information that corresponds to the historical interaction information;

adjusting the available bandwidth according to the current network congestion status information; and

performing transmission according to the adjusted available bandwidth when a subsequent data packet is transmitted to the data receive end next time.

16. The server according to claim 10, wherein the one or more programs further comprise instructions used for performing the following operations:

sending a packet loss probe message to the data receive end when it is detected that duration during which no data packet is transmitted reaches a preset duration and a data packet for which no response message is returned exists in transmitted data packets, wherein the packet loss probe message carries last byte information of a last transmitted data packet;

determining a lost data packet from the transmitted data packets according to a response message corresponding to the packet loss probe message, when the response message is received, wherein the response message carries last byte information of a last data packet received by the data receive end and the last byte information of the last transmitted data packet; and

retransmitting the lost data packet.

17. The server according to claim 10, wherein the one or more programs further comprise instructions used for performing the following operations:

determining first weighted packet loss information according to packet loss information of the interaction information and packet loss information of the historical interaction information of the transmission link;

determining, according to a prestored correspondence between weighted packet loss information and retransmission duration, first retransmission duration corresponding to the first weighted packet loss information; and

retransmitting the data packet when the first retransmission duration is reached.

18. The server according to claim 10, wherein the one or more programs further comprise instructions used for performing the following operations:

determining a first weighted available bandwidth according to the available bandwidth and a parallel historical available bandwidth; and

transmitting the data packet to the data receive end based on a preset first data packet parallel transmission quantity, if the weighted available bandwidth is greater than a preset bandwidth threshold;

or transmitting the data packet to the data receive end based on a preset second data packet parallel transmission quantity, if the weighted available bandwidth is less than or equal to the preset bandwidth threshold, wherein the first data packet parallel transmission quantity is greater than the second data packet parallel transmission quantity.