Contention media access control for telecommunications
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H04W-004/00
H04W-072/14
H04W-074/08
출원번호
US-0223278
(2014-03-24)
등록번호
US-9125224
(2015-09-01)
발명자
/ 주소
Wilczewski, Jeffrey Michael
출원인 / 주소
General Electric Company
대리인 / 주소
Armstrong Teasdale LLP
인용정보
피인용 횟수 :
0인용 특허 :
18
초록▼
A system includes an access point and one or more remotes. The access point is configured for receiving signals, and for transmitting signals comprising contention frames, contention grants, and data frames. The one or more remotes include a first remote configured for receiving signals, and configu
A system includes an access point and one or more remotes. The access point is configured for receiving signals, and for transmitting signals comprising contention frames, contention grants, and data frames. The one or more remotes include a first remote configured for receiving signals, and configured for transmitting signals comprising contention requests and data frames. The first remote is configured for transmitting one of the contention requests within a selected period of time after receiving one of the contention frames from the access point. The access point is configured for transmitting one of the contention grants to the first remote after receiving one of the contention requests from the first remote. The first remote is configured for transmitting one of the data frames within a selected period of time after receiving one of the contention grants from the access point.
대표청구항▼
1. A system comprising: an access point configured for receiving signals from one or more remotes, and configured for transmitting signals comprising contention frames, contention grants, and data frames,wherein the one or more remotes comprise a first remote configured for receiving signals, and co
1. A system comprising: an access point configured for receiving signals from one or more remotes, and configured for transmitting signals comprising contention frames, contention grants, and data frames,wherein the one or more remotes comprise a first remote configured for receiving signals, and configured for transmitting signals comprising contention requests and data frames,wherein the first remote is configured for transmitting one of the contention requests within a selected period of time after receiving one of the contention frames from the access point,wherein the access point is configured for transmitting one of the contention grants to the first remote in response to receiving said one of the contention requests from the first remote,wherein the first remote is configured for transmitting one of the data frames after receiving said one of the contention grants from the access point,wherein the access point is configured for transmitting one of the contention grants to the first remote in response to receiving said one of the contention requests from the first remote,wherein said one of the contention frames from the access point comprises information that defines a subsequent contention period divided into a plurality of time slots, and wherein said one of the remotes having a pending data frame is configured to select one of the time slots in which to transmit a contention request in response to receiving said one of the contention frames from the access point, andwherein a second contention frame transmitted by the access point subsequent to said one of the contention frames comprises a larger number of slots than said one of the contention frames, a larger slot size than said one of the contention frames, or a combination thereof, in response to a number of slots selected by the one or more remotes in said one of the contention frames exceeding a preselected threshold. 2. The system of claim 1, wherein information identifying a number of the plurality of time slots and a time duration of the plurality of time slots is preselected by the access point and is included in said one of the contention frames. 3. The system of claim 1, wherein the selected period of time after receiving one of the contention frames defines a contention period,wherein the access point is further configured for selecting a remote from among the one or more remotes if the access point receives contention requests from the one or more remotes during the contention period,wherein the access point is further configured for transmitting a contention grant only to the selected remote after the contention period, andwherein the one or more remotes are each further configured to implement a first delay before transmitting a subsequent contention request, if the one or more remotes transmit a contention request and do not receive a contention grant after the contention period during which the contention request was transmitted. 4. The system of claim 3, wherein the one or more remotes are each further configured to implement an additional delay before transmitting an additional subsequent contention request, if the one or more remotes transmit a subsequent contention request and do not receive a contention grant after the contention period during which the subsequent contention request was transmitted. 5. The system of claim 4, wherein the one or more remotes are each further configured to linearly increase each additional delay before each additional subsequent contention request, until the one or more remotes receive a contention grant. 6. The system of claim 4, wherein the one or more remotes are each further configured to exponentially increase each additional delay before each additional subsequent contention request, until the one or more remotes receive a contention grant. 7. The system of claim 1, wherein the access point is further configured such that the contention frames comprise information on whether a subsequent contention period is to be immediate or divided into a plurality of slots, and wherein the one or more remotes are each configured for transmitting its contention request within either an immediate period of time or within a selected one of the slots after receiving the contention frame, to correspond to the information in the contention frame. 8. The system of claim 1, wherein the one or more remotes are each further configured to have an address, and are each further configured such that one of the contention requests comprises an address of a first remote and an amount of data in a pending data frame the first remote has ready to transmit. 9. The system of claim 8, wherein the access point is further configured such that one of the contention grants comprises an address of a designated one of the remotes for which the contention grant is indicated and an amount of data in a pending data frame the designated remote is permitted to transmit. 10. The system of claim 8, wherein the access point and the one or more remotes are each further configured to transmit the data frames such that one of the data frames comprises source and destination addresses and a frame sequence number. 11. The system of claim 10, wherein the access point and the one or more remotes are each further configured to transmit acknowledge frames after receiving one of the data frames, such that one of the acknowledge frames comprises source and destination addresses and an acknowledgment sequence number. 12. The system of claim 1, wherein the contention grant is addressed to the first remote. 13. A method of operating an access point in communication with a plurality of remotes, the access point and the remotes being configured for receiving and transmitting signals, the plurality of remotes comprising a first remote, the method comprising: transmitting, by the access point, a series of contention frames defining contention periods between the contention frames;receiving, from the first remote, a contention request during one of the contention periods, wherein the first remote is configured to transmit the contention request within a selected period of time after receiving one of the contention frames from the access point;transmitting, to the first remote, a contention grant in response to receiving the contention request from the first remote; andreceiving, from the first remote, a data frame from the first remote in response to the contention grant,wherein one of the series of contention frames comprises information that defines a subsequent contention period divided into a plurality of time slots, and wherein one of the plurality of remotes having a pending data frame is configured to select one of the time slots in which to transmit a contention request in response to receiving one of the series of contention frames from the access point, andwherein a second contention frame transmitted by the access point subsequent to the one of the plurality of contention frames comprises a larger number of slots than the one of the plurality of contention frames, a larger slot size than the one of the plurality of contention frames, or a combination thereof, in response to a number of slots selected by the one of the plurality of remotes in the one of the plurality of contention frames exceeding a preselected threshold. 14. A method of operating an access point according to claim 13, wherein the plurality of remotes further comprising a second remote, and the method further comprising: receiving, from the second remote, a contention request during one of the contention periods;if the access point receives one contention request during one of the contention periods, then transmitting a contention grant from the access point to one of the remotes having an address indicated in the one received contention request in response to the one received contention request;if the access point receives more than one contention request during one of the contention periods, then selecting one of the plurality of remotes having an address indicated in one of the received contention requests, and transmitting a contention grant from the access point to the selected remote in response to the selected contention request;if one of the plurality of remotes receives a contention grant, then transmitting a data frame from that one remote in a contention period subsequent to the contention grant; andif one of the plurality of remotes does not receive a contention grant in a contention period subsequent to transmitting a contention request, then then the one remote is configured to implement a delay prior to sending a new contention request and transmit a new contention request after passage of the delay. 15. A method of operating an access point according to claim 14, wherein the one remote is configured to linearly increase each additional delay before each additional subsequent contention request. 16. A method of operating an access point according to claim 14, wherein the one remote is configured to exponentially increase each additional delay before each additional subsequent contention request. 17. A method of operating an access point according to claim 14, further comprising assigning an address to each of the plurality of remotes, and wherein the access point is further configured such that one of the contention grants comprises an address of a designated one of the remotes for which the contention grant is indicated.
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