IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
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출원번호 |
US-0104603
(2011-05-10)
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등록번호 |
US-8681699
(2014-03-25)
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발명자
/ 주소 |
- Wilczewski, Jeffrey Michael
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
0 인용 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
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1. A system comprising: an access point configured for receiving signals, and configured for transmitting signals comprising contention frames, contention grants, and data frames; andone or more remotes each configured for receiving signals, and configured for transmitting signals comprising content
1. A system comprising: an access point configured for receiving signals, and configured for transmitting signals comprising contention frames, contention grants, and data frames; andone or more remotes each configured for receiving signals, and configured for transmitting signals comprising contention requests and data frames;wherein the one or more remotes having a pending data frame are each configured for transmitting a contention request to the access point within a selected period of time after receiving one of the contention frames from the access point;wherein the access point is configured for tallying a number of the contention requests received during the contention period and, if the number of the tallied contention requests exceed a selected threshold, transmitting a second contention frame that defines a second contention period that is divided into a plurality of slots; andwherein the one or more remotes having a pending data frame are configured to select one of the slots in which to transmit a second contention request. 2. The system of claim 1, wherein the access point is further configured for transmitting an acknowledge frame to a first remote after receiving a data frame from the first remote. 3. The system of claim 2, wherein the first remote is configured for transmitting an acknowledge frame to the access point after receiving a data frame from the access point. 4. The system of claim 1, wherein the selected period of time after receiving one of the contention frames defines a contention period, and wherein the access point is further configured for selecting a remote from among the one or more remotes if the access point receives contention request 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. 5. The system of claim 4, wherein 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. 6. The system of claim 5, wherein the one or more remotes are each first remote is further configured to implement an additional delay before transmitting an additional subsequent contention request, if the one or more remotes transmit subsequent contention request and do not receive a contention grant after the contention period during which the subsequent contention request was transmitted. 7. The system of claim 6, 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. 8. The system of claim 6, 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. 9. 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 the 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. 10. 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. 11. The system of claim 10, 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. 12. The system of claim 10, 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. 13. 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. 14. A method of operating an access point and 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 and a second remote, the method comprising: transmitting a series of contention frames from the access point, defining contention periods between the contention frames;transmitting a contention request from the first remote during one of the contention periods;transmitting a contention request from the second remote 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;if the access point receives more than one contention request during one of the contention periods, then selecting one of the 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;if one of the remotes receives a contention grant, then transmitting a data frame from that remote in a contention period subsequent to the contention grant;if one of the remotes does not receive a contention grant in a contention period subsequent to transmitting a contention request, then causing that one of the remotes to implement a delay prior to sending a new contention request, then transmitting a new contention request from that one of the remotes after passage of the delay; andthe access point tallying a number of contention requests received during the contention periods, and if the number of contention requests is above a selected threshold, then the access point transmitting a subsequent contention frame that defines a subsequent contention period divided into a plurality of slots, and one of the remotes having a pending data frame, in response to receiving the contention frame that defines the subsequent contention period divided into a plurality of slots, selecting one of the slots in which to transmit a contention request.
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