DUAL BAND ADAPTIVE CONCURRENT PROCESSING METHOD AND APPARATUS

• US 20160044705A1
• Filed: 08/07/2015
• Published: 02/11/2016
• Est. Priority Date: 08/07/2014
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: ZHOU, Yuan, GAO, Lin, LI, Wenjun
• Granted Patent: US 9,844,069 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 28/24 Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
• CPC Class Codes: H04W 48/18 Selecting a network or a communication service
• CPC Class Codes: H04W 72/00 Local resource management
• CPC Class Codes: H04W 72/1263 Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]

Abstract

Embodiments of the present invention provide a dual band adaptive concurrent processing method and apparatus. In the embodiments of the present invention, by using statistical information of a service at a first frequency band and a service at a service at a second frequency band in the N^th adjustment period, service performance of the services at the frequency bands in the adjustment period may be acquired; and based on the statistical information, and a QoS requirement that the services at the two frequency bands need to meet, a second coefficient of proportionality between timeslots occupied by the services at the two frequency bands in the (N+1)^th adjustment period may be determined, so that switching control on a first channel and a second channel may be performed in the (N+1)^th adjustment period according to the determined second coefficient of proportionality.

Claims

1. A dual band adaptive concurrent processing method, applied to a wireless local area network (WLAN) device, wherein the WLAN device comprises a first channel for transmitting a service at a first frequency band and a second channel for transmitting a service at a second frequency band, and the method comprises:

separately acquiring statistical information of the service at the first frequency band and the service at the second frequency band in the N^th adjustment period, wherein the statistical information indicates service performance of the services at the frequency bands in the adjustment period, and N is a natural number;

determining, according to the statistical information, and a quality of service QoS requirement that the service at the first frequency band and the service at the second frequency band need to meet, a second coefficient of proportionality between timeslots occupied by the service at the first frequency band and timeslots occupied by the service at the second frequency band in the (N+1)^th adjustment period; and

performing switching control on the first channel and the second channel in the (N+1)^th adjustment period according to the determined second coefficient of proportionality, so that a ratio between communicating timeslots of the first channel and timeslots of the second channel in the (N+1)^th adjustment period is equal to the second coefficient of proportionality.

2. The method according to claim 1, wherein if both the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device are voice services, the statistical information comprises a maximum voice service scheduling delay;

and

the determining, according to the statistical information, and a QoS requirement that the service at the first frequency band and the service at the second frequency band need to meet, a second coefficient of proportionality between timeslots occupied by the service at the first frequency band and timeslots occupied by the service at the second frequency band in the (N+1)^th adjustment period comprises;

determining whether both a maximum voice service scheduling delay of the service at the first frequency band and a maximum voice service scheduling delay of the service at the second frequency band are less than a first threshold, wherein the first threshold is a maximum scheduling delay required by voice service quality; and

if both the maximum voice service scheduling delay of the service at the first frequency band and the maximum voice service scheduling delay of the service at the second frequency band are less than the first threshold, determining that the second coefficient of proportionality between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the (N+1)^th adjustment period is equal to a first coefficient of proportionality, wherein the first coefficient of proportionality indicates a ratio between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the N^th adjustment period;

otherwise, determining whether a difference between the maximum voice service scheduling delay of the service at the first frequency band and the maximum voice service scheduling delay of the service at the second frequency band is less than a preset second threshold;

if the difference is less than the second threshold, determining that the second coefficient of proportionality is equal to the first coefficient of proportionality; and

if the difference is greater than or equal to the second threshold, on a basis of the first coefficient of proportionality, increasing a timeslot percentage corresponding to the service at the first frequency band by a first step and reducing a timeslot percentage corresponding to the service at the second frequency band by the first step, so as to obtain the second coefficient of proportionality, wherein the maximum voice service scheduling delay of the service at the first frequency band is greater than the maximum voice service scheduling delay of the service at the second frequency band.

3. The method according to claim 1, wherein if both the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device are video services, the statistical information comprises a maximum video service scheduling delay;

and

the determining, according to the statistical information, and a QoS requirement that the service at the first frequency band and the service at the second frequency band need to meet, a second coefficient of proportionality between timeslots occupied by the service at the first frequency band and timeslots occupied by the service at the second frequency band in the (N+1)^th adjustment period comprises;

determining whether both a maximum video service scheduling delay of the service at the first frequency band and a maximum video service scheduling delay of the service at the second frequency band are less than a third threshold, wherein the third threshold is a maximum scheduling delay required by video service quality; and

if both the maximum video service scheduling delay of the service at the first frequency band and the maximum video service scheduling delay of the service at the second frequency band are less than the third threshold, determining that the second coefficient of proportionality between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the (N+1)^th adjustment period is equal to a first coefficient of proportionality, wherein the first coefficient of proportionality indicates a ratio between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the N^th adjustment period;

otherwise, determining whether a difference between the maximum video service scheduling delay of the service at the first frequency band and the maximum video service scheduling delay of the service at the second frequency band is less than a preset fourth threshold;

if the difference is less than the fourth threshold, determining that the second coefficient of proportionality is equal to the first coefficient of proportionality; and

if the difference is greater than or equal to the fourth threshold, on a basis of the first coefficient of proportionality, increasing a timeslot percentage corresponding to the service at the first frequency band by a second step and reducing a timeslot percentage corresponding to the service at the second frequency band by the second step, so as to obtain the second coefficient of proportionality, wherein the maximum video service scheduling delay of the service at the first frequency band is greater than the maximum video service scheduling delay of the service at the second frequency band.

4. The method according to claim 1, wherein if both the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device are data services, the statistical information comprises a quantity of low-bandwidth data service users;

and

the determining, according to the statistical information, and a QoS requirement that the service at the first frequency band and the service at the second frequency band need to meet, a second coefficient of proportionality between timeslots occupied by the service at the first frequency band and timeslots occupied by the service at the second frequency band in the (N+1)^th adjustment period comprises;

determining whether both a quantity of low-bandwidth data service users of the service at the first frequency band and a quantity of low-bandwidth data service users of the service at the second frequency band are 0; and

if both the quantity of low-bandwidth data service users of the service at the first frequency band and the quantity of low-bandwidth data service users of the service at the second frequency band are 0, determining that the second coefficient of proportionality between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the (N+1)^th adjustment period is equal to a first coefficient of proportionality, wherein the first coefficient of proportionality indicates a ratio between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the N^th adjustment period;

otherwise, determining whether the quantity of low-bandwidth data service users of the service at the first frequency band is equal to the quantity of low-bandwidth data service users of the service at the second frequency band;

if the quantity of low-bandwidth data service users of the service at the first frequency band is equal to the quantity of low-bandwidth data service users of the service at the second frequency band, determining that the second coefficient of proportionality is equal to the first coefficient of proportionality; and

if the quantity of low-bandwidth data service users of the service at the first frequency band is not equal to the quantity of low-bandwidth data service users of the service at the second frequency band, on a basis of the first coefficient of proportionality, increasing a timeslot percentage corresponding to the service at the first frequency band by a third step and reducing a timeslot percentage corresponding to the service at the second frequency band by the third step, so as to obtain the second coefficient of proportionality, wherein the quantity of low-bandwidth data service users of the service at the first frequency band is greater than the quantity of low-bandwidth data service users of the service at the second frequency band.

5. The method according to claim 1, wherein if both the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device comprise at least one service of:

a voice service, a video service, and a data service, the statistical information comprises at least one of a maximum voice service scheduling delay, a maximum video service scheduling delay, a quantity of low-bandwidth data service users, and a total uplink and downlink throughput; and

the determining, according to the statistical information, and a QoS requirement that the service at the first frequency band and the service at the second frequency band need to meet, a second coefficient of proportionality between timeslots occupied by the service at the first frequency band and timeslots occupied by the service at the second frequency band in the (N+1)^th adjustment period comprises;

S201. determining whether maximum voice service scheduling delays of the service at the first frequency band and the service at the second frequency band are less than a first threshold, wherein the first threshold is a maximum scheduling delay required by voice service quality; and

if the maximum voice service scheduling delays of the service at the first frequency band and the service at the second frequency band are less than the first threshold, performing S205;

otherwise, performing S202;

S202. determining whether a difference between the maximum voice service scheduling delays of the service at the first frequency band and the service at the second frequency band is less than a preset second threshold; and

if the difference is less than the second threshold, performing S203;

otherwise, performing S204;

S203. determining that the second coefficient of proportionality is equal to a first coefficient of proportionality, wherein the first coefficient of proportionality indicates ratios of timeslots occupied by the service at the first frequency band and the service at the second frequency band in the N^th adjustment period;

S204. on a basis of the first coefficient of proportionality, increasing a timeslot percentage corresponding to the service at the first frequency band by a first step and reducing a timeslot percentage corresponding to the service at the second frequency band by the first step, so as to obtain the second coefficient of proportionality, wherein the maximum voice service scheduling delay of the service at the first frequency band is greater than the maximum voice service scheduling delay of the service at the second frequency band;

S205. determining whether both a maximum video service scheduling delay of the service at the first frequency band and a maximum video service scheduling delay of the service at the second frequency band are less than a third threshold, wherein the third threshold is a maximum scheduling delay required by video service quality; and

if both the maximum video service scheduling delay of the service at the first frequency band and the maximum video service scheduling delay of the service at the second frequency band are less than the third threshold, performing S208;

otherwise, performing S206;

S206. determining whether a difference between the maximum video service scheduling delay of the service at the first frequency band and the maximum video service scheduling delay of the service at the second frequency band is less than a preset fourth threshold; and

if the difference is less than the fourth threshold, performing S203;

otherwise, performing S207;

S207. on a basis of the first coefficient of proportionality, increasing the timeslot percentage corresponding to the service at the first frequency band by a second step and reducing the timeslot percentage corresponding to the service at the second frequency band by the second step, so as to obtain the second coefficient of proportionality, wherein the maximum video service scheduling delay of the service at the first frequency band is greater than the maximum video service scheduling delay of the service at the second frequency band;

S208. determining whether both a quantity of low-bandwidth data service users of the service at the first frequency band and a quantity of low-bandwidth data service users of the service at the second frequency band are 0; and

if both the quantity of low-bandwidth data service users of the service at the first frequency band and the quantity of low-bandwidth data service users of the service at the second frequency band are 0, performing S211;

otherwise, performing S209;

S209. determining whether the quantity of low-bandwidth data service users of the service at the first frequency band is equal to the quantity of low-bandwidth data service users of the service at the second frequency band; and

if the quantity of low-bandwidth data service users of the service at the first frequency band is equal to the quantity of low-bandwidth data service users of the service at the second frequency band, performing S203;

otherwise, performing S210;

S210. on a basis of the first coefficient of proportionality, increasing the timeslot percentage corresponding to the service at the first frequency band by a third step and reducing the timeslot percentage corresponding to the service at the second frequency band by the third step, so as to obtain the second coefficient of proportionality, wherein the quantity of low-bandwidth data service users of the service at the first frequency band is greater than the quantity of low-bandwidth data service users of the service at the second frequency band;

S211. determining whether a difference between total uplink and downlink throughputs of the service at the first frequency band and the service at the second frequency band is less than a preset fifth threshold; and

if the difference is less than the fifth threshold, performing S203;

otherwise, performing S212; and

S212. on a basis of the first coefficient of proportionality, increasing the timeslot percentage corresponding to the service at the first frequency band by a fourth step and reducing the timeslot percentage corresponding to the service at the second frequency band by the fourth step, so as to obtain the second coefficient of proportionality, wherein the total uplink and downlink throughput of the service at the first frequency band is greater than the total uplink and downlink throughput of the service at the second frequency band.

6. The method according to claim 1, wherein if the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device are data forwarding services, the statistical information comprises a downlink data volume R_down received from an access point AP at the first frequency band, a data volume L_down temporarily stored in a downlink sending queue, an uplink data volume R_up received from a STA at the second frequency band, and a data volume L_up temporarily stored in an uplink sending queue;

and

the determining, according to the statistical information, and a QoS requirement that the service at the first frequency band and the service at the second frequency band need to meet, a second coefficient of proportionality between timeslots occupied by the service at the first frequency band and timeslots occupied by the service at the second frequency band in the (N+1)^th adjustment period comprises;

determining an uplink and downlink service accumulation situation according to L_down and L_up, wherein if MAX {L_up,L_down}<

P_TH, it is determined that there is no accumulation in uplink and downlink;

otherwise, if

7. The method according to claim 6, wherein the comparing uplink and downlink receiving data volumes according to R_down and R_up comprises:

if

8. A dual band adaptive concurrent processing apparatus, applied to a WLAN device, wherein the WLAN device comprises a first channel for transmitting a service at a first frequency band and a second channel for transmitting a service at a second frequency band, and the apparatus comprises:

an acquiring module, configured to separately acquire statistical information of the service at the first frequency band and the service at the second frequency band in the N^th adjustment period, wherein the statistical information indicates service performance of the services at the frequency bands in the adjustment period, and N is a natural number;

a determining module, configured to determine, according to the statistical information, and a quality of service QoS requirement that the service at the first frequency band and the service at the second frequency band need to meet, a second coefficient of proportionality between timeslots occupied by the service at the first frequency band and timeslots occupied by the service at the second frequency band in the (N+1)^th adjustment period; and

a switching control module, configured to perform switching control on the first channel and the second channel in the (N+1)^th adjustment period according to the determined second coefficient of proportionality, so that a ratio between communicating timeslots of the first channel and timeslots of the second channel in the (N+1)^th adjustment period is equal to the second coefficient of proportionality.

9. The apparatus according to claim 8, wherein if both the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device are voice services, the statistical information comprises a maximum voice service scheduling delay;

and

the determining module is specifically configured to;

determine whether both a maximum voice service scheduling delay of the service at the first frequency band and a maximum voice service scheduling delay of the service at the second frequency band are less than a first threshold, wherein the first threshold is a maximum scheduling delay required by voice service quality; and

if both the maximum voice service scheduling delay of the service at the first frequency band and the maximum voice service scheduling delay of the service at the second frequency band are less than the first threshold, determine that the second coefficient of proportionality between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the (N+1)^th adjustment period is equal to a first coefficient of proportionality, wherein the first coefficient of proportionality indicates a ratio between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the N^th adjustment period;

otherwise, determine whether a difference between the maximum voice service scheduling delay of the service at the first frequency band and the maximum voice service scheduling delay of the service at the second frequency band is less than a preset second threshold;

if the difference is less than the second threshold, determine that the second coefficient of proportionality is equal to the first coefficient of proportionality; and

if the difference is greater than or equal to the second threshold, on a basis of the first coefficient of proportionality, increase a timeslot percentage corresponding to the service at the first frequency band by a first step and reduce a timeslot percentage corresponding to the service at the second frequency band by the first step, so as to obtain the second coefficient of proportionality, wherein the maximum voice service scheduling delay of the service at the first frequency band is greater than the maximum voice service scheduling delay of the service at the second frequency band.

10. The apparatus according to claim 8, wherein if both the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device are video services, the statistical information comprises a maximum video service scheduling delay;

and

the determining module is specifically configured to;

determine whether both a maximum video service scheduling delay of the service at the first frequency band and a maximum video service scheduling delay of the service at the second frequency band are less than a third threshold, wherein the third threshold is a maximum scheduling delay required by video service quality; and

if both the maximum video service scheduling delay of the service at the first frequency band and the maximum video service scheduling delay of the service at the second frequency band are less than the third threshold, determine that the second coefficient of proportionality between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the (N+1)^th adjustment period is equal to a first coefficient of proportionality, wherein the first coefficient of proportionality indicates ratios of timeslots occupied by the service at the first frequency band and the service at the second frequency band in the N^th adjustment period;

otherwise, determine whether a difference between the maximum video service scheduling delay of the service at the first frequency band and the maximum video service scheduling delay of the service at the second frequency band is less than a preset fourth threshold;

if the difference is less than the fourth threshold, determine that the second coefficient of proportionality is equal to the first coefficient of proportionality; and

if the difference is greater than or equal to the fourth threshold, on a basis of the first coefficient of proportionality, increase a timeslot percentage corresponding to the service at the first frequency band by a second step and reduce a timeslot percentage corresponding to the service at the second frequency band by the second step, so as to obtain the second coefficient of proportionality, wherein the maximum video service scheduling delay of the service at the first frequency band is greater than the maximum video service scheduling delay of the service at the second frequency band.

11. The apparatus according to claim 8, wherein if both the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device are data services, the statistical information comprises a quantity of low-bandwidth data service users;

and

the determining module is specifically configured to;

determine whether both a quantity of low-bandwidth data service users of the service at the first frequency band and a quantity of low-bandwidth data service users of the service at the second frequency band are 0; and

if both the quantity of low-bandwidth data service users of the service at the first frequency band and the quantity of low-bandwidth data service users of the service at the second frequency band are 0, determine that the second coefficient of proportionality between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the (N+1)^th adjustment period is equal to a first coefficient of proportionality, wherein the first coefficient of proportionality indicates a ratio between the timeslots occupied by the service at the first frequency band and the service at the second frequency band in the N^th adjustment period;

otherwise, determine whether the quantity of low-bandwidth data service users of the service at the first frequency band is equal to the quantity of low-bandwidth data service users of the service at the second frequency band;

if the quantity of low-bandwidth data service users of the service at the first frequency band is equal to the quantity of low-bandwidth data service users of the service at the second frequency band, determine that the second coefficient of proportionality is equal to the first coefficient of proportionality; and

if the quantity of low-bandwidth data service users of the service at the first frequency band is not equal to the quantity of low-bandwidth data service users of the service at the second frequency band, on a basis of the first coefficient of proportionality, increase the timeslot percentage corresponding to the service at the first frequency band by a third step and reduce the timeslot percentage corresponding to the service at the second frequency band by the third step, so as to obtain the second coefficient of proportionality, wherein the quantity of low-bandwidth data service users of the service at the first frequency band is greater than the quantity of low-bandwidth data service users of the service at the second frequency band.

12. The apparatus according to claim 8, wherein if both the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device comprise at least one service of:

a voice service, a video service, and a data service, the statistical information comprises at least one of a maximum voice service scheduling delay, a maximum video service scheduling delay, a quantity of low-bandwidth data service users, and a total uplink and downlink throughput; and

the determining module is specifically configured to;

S201. determine whether maximum voice service scheduling delays of the service at the first frequency band and the service at the second frequency band are less than a first threshold, wherein the first threshold is a maximum scheduling delay required by voice service quality; and

if both the maximum voice service scheduling delays of the service at the first frequency band and the service at the second frequency band are less than the first threshold, perform S205;

otherwise, perform S202;

S202. determine whether a difference between the maximum voice service scheduling delays of the service at the first frequency band and the service at the second frequency band is less than a preset second threshold;

if the difference is less than the second threshold, perform S203;

otherwise, perform S204;

S203. determine that the second coefficient of proportionality is equal to a first coefficient of proportionality, wherein the first coefficient of proportionality indicates ratios of timeslots occupied by the service at the first frequency band and the service at the second frequency band in the N^th adjustment period;

S204. on a basis of the first coefficient of proportionality, increase a timeslot percentage corresponding to the service at the first frequency band by a first step and reduce a timeslot percentage corresponding to the service at the second frequency band by the first step, so as to obtain the second coefficient of proportionality, wherein the maximum voice service scheduling delay of the service at the first frequency band is greater than the maximum voice service scheduling delay of the service at the second frequency band;

S205. determine whether both a maximum video service scheduling delay of the service at the first frequency band and a maximum video service scheduling delay of the service at the second frequency band are less than a third threshold, wherein the third threshold is a maximum scheduling delay required by video service quality; and

if both the maximum video service scheduling delay of the service at the first frequency band and the maximum video service scheduling delay of the service at the second frequency band are less than the third threshold, perform S208;

otherwise, perform S206;

S206. determine whether a difference between the maximum video service scheduling delay of the service at the first frequency band and the maximum video service scheduling delay of the service at the second frequency band is less than a preset fourth threshold; and

if the difference is less than the fourth threshold, perform S203;

otherwise, perform S207;

S207. on a basis of the first coefficient of proportionality, increase the timeslot percentage corresponding to the service at the first frequency band by a second step and reduce the timeslot percentage corresponding to the service at the second frequency band by the second step, so as to obtain the second coefficient of proportionality, wherein the maximum video service scheduling delay of the service at the first frequency band is greater than the maximum video service scheduling delay of the service at the second frequency band;

S208. determine whether both a quantity of low-bandwidth data service users of the service at the first frequency band and a quantity of low-bandwidth data service users of the service at the second frequency band are 0; and

if both the quantity of low-bandwidth data service users of the service at the first frequency band and the quantity of low-bandwidth data service users of the service at the second frequency band are 0, perform S211;

otherwise, perform S209;

S209. determine whether the quantity of low-bandwidth data service users of the service at the first frequency band is equal to the quantity of low-bandwidth data service users of the service at the second frequency band; and

if the quantity of low-bandwidth data service users of the service at the first frequency band is equal to the quantity of low-bandwidth data service users of the service at the second frequency band, perform S203;

otherwise, perform S210;

S210. on a basis of the first coefficient of proportionality, increase the timeslot percentage corresponding to the service at the first frequency band by a third step and reduce the timeslot percentage corresponding to the service at the second frequency band by the third step, so as to obtain the second coefficient of proportionality, wherein the quantity of low-bandwidth data service users of the service at the first frequency band is greater than the quantity of low-bandwidth data service users of the service at the second frequency band;

S211. determine whether a difference between total uplink and downlink throughputs of the service at the first frequency band and the service at the second frequency band is less than a preset fifth threshold; and

if the difference is less than the fifth threshold, perform S203;

otherwise, perform S212; and

S212. on a basis of the first coefficient of proportionality, increase the timeslot percentage corresponding to the service at the first frequency band by a fourth step and reduce the timeslot percentage corresponding to the service at the second frequency band by the fourth step, so as to obtain the second coefficient of proportionality, wherein the total uplink and downlink throughput of the service at the first frequency band is greater than the total uplink and downlink throughput of the service at the second frequency band.

13. The apparatus according to claim 8, wherein if the service at the first frequency band and the service at the second frequency band that are transmitted by the WLAN device are data forwarding services, the statistical information comprises a downlink data volume R_down received from an access point AP at the first frequency band, a data volume L_down temporarily stored in a downlink sending queue, an uplink data volume R_up received from a STA at the second frequency band, and a data volume L_up temporarily stored in an uplink sending queue;

and

the determining module is specifically configured to;

determine an uplink and downlink service accumulation situation according to L_down and L_up, wherein if MAX {L_up,L_down}<

P_TH, it is determined that there is no accumulation in uplink and downlink;

otherwise, if

14. The apparatus according to claim 13, wherein the determining module is specifically configured to:

if