Medium access control (MAC) protocol with seamless polling/contention modes
AssigneeAvaya Technology Corp.
InventorsChih-Yuan Chang, Jenwei Liang, Huei-ming Steve Yang, Yee-Hsiang Chang, Francis James Smith
Life of this patent
Estimating the term…
Abstract
A high speed wireless network for the access market where a polling mode, a contention mode, a seamless transition between the two modes and an efficient contention resolution algorithm are utilized to coordinate user transmission while utilizing a splitting tree algorithm to avoid collision of a number of users.
Claims39
A method of coordinating slotted multiple access in a wireless network channel shared by a plurality of users comprising the steps of:
- a. assigning each of a plurality of users into a subgroup, thereby forming one or more subgroups of users, wherein each subgroup utilizes a contention mode;
- b. utilizing a polling mode to provide each subgroup a transmission opportunity;
- and
- c. utilizing a seamless transition between the polling and contention modes such that when a specific subgroup is provided a transmission opportunity and a collision occurs between user signals within the specific subgroup, the specific subgroup is split into smaller subgroups, each smaller subgroup including a portion of the users within the specific subgroup and each smaller subgroup utilizes a contention mode.
An apparatus for coordinating slotted multiple access in a wireless network channel shared by a plurality of users comprising:
- a. means for assigning each one of a plurality of users into a subgroup, thereby forming one or more subgroups of users;
- b. means for implementing a polling mode to provide each subgroup a transmission opportunity;
- c. means for implementing a contention mode within each subgroup;
- and
- d. means for providing a seamless transition between the polling and contention modes such that when a specific subgroup is provided a transmission opportunity and a collision occurs between user signals within the specific subgroup, the specific subgroup is split into smaller subgroups, each smaller subgroup including a portion of the users within the specific subgroup and each smaller subgroup utilizes a contention mode.
An apparatus for coordinating slotted multiple access in a wireless network channel shared by a plurality of users comprising:
- a. an ATM cube for operating a high speed wireless network consisting of a plurality of horizontal and vertical management layers;
- b. a hub for transmitting and receiving wireless network signals such that the hub may receive requests and assign portions of a communication bandwidth;
- and
- c. a plurality of end user nodes for transmitting and receiving wireless network signals such that a plurality of users may request or be granted a portion of the communication bandwidth,
- wherein the hub assigns each one of the plurality of users into a subgroup that utilizes a contention mode, and when a specific subgroup is provided a transmission opportunity according to a polling mode and a collision occurs between user signals within the specific subgroup, the hub splits the specific subgroup into smaller subgroups, each smaller subgroup including a portion of the users within the specific subgroup and each smaller subgroup utilizes a contention mode.
Dependencies are inferred from the claim text.