ACCESS POINT AND COMMUNICATION SYSTEM FOR RESOURCE ALLOCATION

• US 20150055633A1
• Filed: 08/22/2014
• Published: 02/26/2015
• Est. Priority Date: 08/26/2013
• Status: Active Grant

• Current Assignee: National Chiao Tung University (Government of The Republic of China)
• Original Assignee: National Chiao Tung University (Government of The Republic of China)
• Inventors: Wu, Sau-Hsuan, Chao, Hsi-Lu, Ko, Chun-Hsien
• Granted Patent: US 9,917,669 B2
• Time in Patent Office: Days
• US Class Current: 370/336
• CPC Class Codes: H04J 3/1694 Allocation of channels in TDM/TDMA networks, e.g. distributed multiplexers Passive Optical Networks H04Q11/0062
• CPC Class Codes: H04W 16/04 Traffic adaptive resource partitioning
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 28/16 Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
• CPC Class Codes: H04W 52/265 taking into account the quality of service QoS
• CPC Class Codes: H04W 52/346 distributing total power among users or channels
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

An access point (AP) and a communication system are provided. The access point comprises at least but not limited to a transceiver, a network connection unit, and a processing circuit. The processing circuit is configured for the following steps. The AP receives channel access requests of the user equipments (UEs) from the UEs. Next, the AP transmits a channel request data according to QoS requirements of plurality of channel access requests of the UEs to the server. Afterward, the AP receives resource allocation information associated with the channel request data from the server, wherein the resource allocation information comprises an allocated result of physical channels and transmission power configurations. Subsequently, the AP allocates the physical channels to the UEs according to the QoS requirements of the channel access requests of the UEs and the resource allocation information.

Claims

1. An access point (AP), comprising:

a transceiver for transmitting and receiving wireless data;

a network connection unit for transmitting and receiving control data;

a processing circuit coupled to the transceiver and the network connection unit and is configured for;

receiving a plurality of channel access requests of a plurality of UEs using the transceiver;

transmitting a channel request data transformed from the plurality of channel access requests of the plurality of UEs according to quality of service (QoS) requirements of plurality of channel access requests of the plurality of UEs using the network connection unit;

receiving resource allocation information associated with the channel request data using the network connection unit, wherein the resource allocation information comprises an allocated result of a plurality of physical channels and a plurality of transmission power configurations; and

allocating the plurality of physical channels to the plurality of UEs according to the QoS requirements of the plurality of channel access requests of the plurality of UEs and the resource allocation information.

2. The AP according to claim 1, wherein the channel request data comprises a plurality of utility requests of sectors, and the processing circuit is further configured for:

transforming the plurality of channel access requests of the plurality of UEs into the plurality of utility requests of sectors according location data of the plurality of UEs and the QoS requirements of the plurality of channel access requests of the plurality of UEs.

3. The AP according to claim 2, wherein the number of the sectors is N, N is a positive integer, and the processing circuit is further configured for:

grouping the plurality of UEs into N sectors according to the location data of the plurality of UEs.

4. The AP according to claim 3, wherein the plurality of channel access requests of the plurality of UEs are corresponded to M service types, M is a positive integer, and the processing circuit is further configured for:

mapping transmission rate requirements of the M service types corresponding to the QoS requirements of the plurality of channel access requests of the plurality of UEs to capacities of the plurality of physical channels; and

calculating numbers of required physical channels of the M service types in each of the sectors as numbers of the plurality of utility requests of sectors according to mapped results.

5. The AP according to claim 4, wherein the processing circuit is further configured for:

calculating a bandwidth requirement of each of the M service types in each of the sectors according to the transmission rate requirements of the M service types and amounts of the plurality of the channel access requests of the plurality of the UEs for the M service types of each of the sectors;

calculating an offered capacity of each of the capacities of the plurality of physical channels mapped with the each of the M service types in each of the sectors; and

calculating the numbers of required physical channels of the each of M service types of each of the sectors in an order of the M service types according to the bandwidth requirement of each of the M service types and the offered capacity of each of the capacities of the plurality of physical channels mapped with the each of the M service types, wherein the order of the M service types is arranged according to the transmission rate requirements of the M service types.

6. The resource allocation method according to claim 4, wherein the processing circuit is further configured for:

assigning the plurality of the allocated physical channels with the plurality of transmission power configurations to the plurality of UEs in the manner of time division multiplexing.

7. The resource allocation method according to claim 6, wherein the processing circuit is further configured for:

determining a service guarantee degree, wherein the service guarantee degree is based on a ratio of an allocated bandwidth of all capacities of the plurality of physical channels to a required physical channel bandwidth of each of the plurality of channel access requests of the plurality of UEs; and

allocating the plurality of physical channels for the plurality of channel access requests of the plurality of UEs according to the service guarantee degree.

8. The resource allocation method according to claim 7, wherein the processing circuit is further configured for:

determining a utilization degree, wherein the utilization degree is based on a ratio of the required physical channel bandwidth of each of the plurality of channel access requests of the plurality of UEs to the allocated bandwidth of all capacities of the plurality of physical channels; and

allocating the plurality of physical channels for the plurality of channel access requests of the plurality of UEs according to the utilization degree.

9. The resource allocation method according to claim 1, wherein the processing circuit is further configured for:

maximizing the sum utility corresponding to the plurality of channel access requests of the plurality of UEs according to the plurality of physical channels and the QoS requirements of the plurality of channel access requests of the plurality of UEs, so as to allocate the plurality of physical channels to the plurality of UEs according to the maximized result.

10. The resource allocation method according to claim 1, wherein the processing circuit is further configured for:

transmitting the wireless data corresponding to the plurality of channel access requests of the plurality of UEs using the plurality of transmission power configurations on each of the plurality of the allocated physical channels.

11. A communication system, comprising:

a plurality of UEs;

a server; and

a plurality of APs, coupled to the server, wherein each of the plurality of APs is configured to receive a plurality of channel access requests of the plurality of UEs from the plurality of UEs, transmit a channel request data according to the QoS requirements of plurality of channel access requests of the plurality of UEs to the server, receive the resource allocation information associated with the channel request data from the server, wherein the resource allocation information comprises an allocated result of a plurality of physical channels and a plurality of transmission power configurations, and allocate the plurality of physical channels to the plurality of UEs according to the QoS requirements of the plurality of channel access requests of the plurality of UEs and the resource allocation information.

12. The communication system according to claim 11, wherein the channel request data comprises a plurality of utility requests of sectors, and each of the plurality of APs is configured to transform the plurality of channel access requests of the plurality of UEs into the plurality of utility requests of sectors according the location data of the plurality of UEs and the QoS requirements of the plurality of channel access requests of the plurality of UEs.

13. The communication system according to claim 12, wherein the number of the sectors is N, N is a positive integer, and the each of the plurality of APs is configured to group the plurality of UEs into N sectors according to the location data of the plurality of UEs.

14. The communication system according to claim 13, wherein the plurality of channel access requests of the plurality of UEs is corresponded to M service types, M is a positive integer, and the each of the plurality of APs is configured to map the transmission rate requirements of the M service types corresponding to the QoS requirements of the plurality of channel access requests of the plurality of UEs to the capacities of the plurality of physical channels, and calculate the numbers of the required physical channels of the M service types in each of the sectors as the numbers of the plurality of utility requests of sectors according to the mapped results.

15. The communication system according to claim 14, wherein each of the plurality of APs is configured to calculate a bandwidth requirement of each of the M service types in each of the sectors according to the transmission rate requirements of the M service types and amounts of the plurality of the channel access requests of the plurality of the UEs for the M service types of each of the sectors, calculate an offered capacity of each of the capacities of the plurality of physical channels mapped with the each of the M service types in each of the sectors, and calculate the numbers of required physical channels of the each of M service types of the each of M service types in a order of the M service types according to the bandwidth requirement of each of the M service types and the offered capacity of each of the capacities of the plurality of physical channels mapped with the each of the M service types, wherein the order of the M service types is arranged according to the transmission rate requirements of the M service types.

16. The communication system according to claim 14, wherein each of the plurality of APs is configured to assign the plurality of the allocated physical channels with the plurality of transmission power configurations to the plurality of UEs in the manner of time division multiplexing.

17. The communication system according to claim 16, wherein each of the plurality of APs is configured to determine a service guarantee degree, wherein the service guarantee degree is based on a ratio of an allocated bandwidth of all capacities of the plurality of allocated physical channels to a required physical channel bandwidth of each of the plurality of channel access requests of the plurality of UEs, and allocate the plurality of physical channels for the plurality of channel access requests of the plurality of UEs according to the service guarantee degree.

18. The communication system according to claim 17, wherein each of the plurality of APs is configured to determining a utilization degree, wherein the utilization degree is based on a ratio of the required physical channel bandwidth of each of the plurality of channel access requests of the plurality of UEs to the allocated bandwidth of all capacities of the allocated plurality of physical channels, and allocate the plurality of physical channels for the plurality of channel access requests of the plurality of UEs according to the utilization degree.

19. The communication system according to claim 11, wherein each of the plurality of APs is configured to maximize the sum utility corresponding to the plurality of channel access requests of the plurality of UEs according to the plurality of physical channels and the QoS requirements of the plurality of channel access requests of the plurality of UEs, so as to allocate the plurality of physical channels to the plurality of UEs according to the maximized result.

20. The communication system according to claim 11, wherein each of the plurality of APs is configured to transmit the wireless data corresponding to the plurality of channel access requests of the plurality of UEs using the plurality of transmission power configurations on each of the plurality of the allocated physical channels.