Erased frame and idle frame suppression in a wireless communications system
First Claim
1. A method of controlling frame forwarding operations of a first radio base station in a wireless communications system, comprising:
- receiving first and second successive frames from a mobile station at said first radio base station, said second frame received after said first frame;
classifying said first and second frames at said first radio base station;
in response to both said first and second frames being classified differently, said first radio base station sending at least a header associated with said second frame to a call anchor associated with said mobile station;
said header indicating the classification of said second frame;
in response to both said first and second frames being classified as erased frames, said first radio base station abstaining from sending said header to said call anchor.
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Accused Products
Abstract
A method of reducing loading on backhaul communications links in a wireless communications system suppresses a portion of the upward flow of frame information for idle and/or erased frames in certain situations, such as when multiple ones of such frames are successively encountered. A radio base station abstains from sending a frame header to a BSC/ANC for second and following frames of the Idle type and/or the radio base station abstains from sending a frame header to a BSC/ANC for second and following frames of the Erased type. The header may also or alternatively be suppressed for an Idle frame immediately following a Good frame. The BSC/ANC in effect fills in the suppressed frame information in such situations, forwards appropriate indications of frame type to the frame selection algorithm.
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Citations
24 Claims
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1. A method of controlling frame forwarding operations of a first radio base station in a wireless communications system, comprising:
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receiving first and second successive frames from a mobile station at said first radio base station, said second frame received after said first frame; classifying said first and second frames at said first radio base station; in response to both said first and second frames being classified differently, said first radio base station sending at least a header associated with said second frame to a call anchor associated with said mobile station;
said header indicating the classification of said second frame;in response to both said first and second frames being classified as erased frames, said first radio base station abstaining from sending said header to said call anchor. - View Dependent Claims (2, 3, 4, 5)
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6. A method of controlling frame forwarding operations of a first radio base station in a wireless communications system, comprising:
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classifying first and second frames associated with a mobile station at a first radio base station, said second frame immediately successive to said first frame; in response to both said first and second frames being classified differently, said first radio base station sending at least a header associated with said second frame to a call anchor associated with said mobile station;
said header indicating the classification of said second frame;in response to both said first and second frames being classified as idle frames, said first radio base station abstaining from sending said header to said call anchor. - View Dependent Claims (7, 8, 9)
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10. A method of controlling frame forwarding operations of a first radio base station in a wireless communications system;
- said first radio base station having at least an idle frame state;
a good frame state, and an erased frame state;
said method comprising;receiving a reverse link frame from a mobile station at the first radio base station while the first radio base station is in said erased frame state; classifying said received frame by said first radio base station; in response to said received frame being classified as a good frame, said first radio base station sending said received frame and a header to a call anchor associated with said mobile station and transitioning to said good frame state; in response to said received frame being classified as an erased frame, said first radio base station abstaining from sending said frame to said call anchor and abstaining from sending said header to said call anchor, and further remaining in said erased frame state; in response to said received frame being classified as an idle frame, said first radio base station sending said header to said call anchor but abstaining from sending said frame to said call anchor;
said header comprising an idle indication; and
further transitioning to said idle frame state. - View Dependent Claims (11)
- said first radio base station having at least an idle frame state;
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12. A method of controlling frame forwarding operations of a first base station in a wireless communications system;
- said base station having at least an idle frame state;
a good frame state, and an erased frame state;
said method comprising;receiving a reverse link packet from a mobile station at said first base station while first said base station is in said idle frame state; classifying said received frame; in response to said received frame being classified as a good frame, said first base station sending said received frame and a header to a call anchor associated with said mobile station and transitioning to said good frame state; in response to said received frame being classified as an erased frame, said first base station abstaining from sending said frame to said call anchor but sending said header to said call anchor;
said header comprising an erasure indication; and
further transitioning to said erased frame state;in response to said received frame being classified as an idle frame, said first base station abstaining from sending said frame to said call anchor, abstaining from sending said header to said call anchor, and remaining in said idle state.
- said base station having at least an idle frame state;
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13. A method of supplying frame classification information by an anchor base station to a frame selection algorithm, said anchor base station having at least an idle frame receipt state;
- a good frame receipt state, and an erased frame receipt state;
said method comprising;in response to being in said idle frame receipt state and receiving neither a frame nor a header from said first radio base station at a frame boundary, said anchor base station supplying an indication, corresponding to said first base station, to said frame selection algorithm indicating an idle frame and remaining in said idle frame receipt state; and in response to being in said erased frame receipt state and receiving neither a frame nor a header from a first radio base station at a frame boundary, said anchor base station supplying an indication, corresponding to said first base station, to said frame selection algorithm indicating an erased frame and remaining in said erased frame receipt state. - View Dependent Claims (14, 15)
- a good frame receipt state, and an erased frame receipt state;
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16. A radio base station for a wireless communications system, comprising:
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a receiver operative to receive first and second frames from a mobile station on a reverse link;
said second frame immediately successive to said first frame;one or more processing circuits operatively coupled to said receiver and configured to; classify said first and second frames; send at least a header associated with said second frame to a call anchor associated with said mobile station in response to both said first and second frames being classified differently;
said header indicating the classification of said second frame;abstain from sending said header to said call anchor in response to both said first and second frames being classified as idle frames. - View Dependent Claims (17, 18, 19)
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20. A radio base station for a wireless communications system, comprising:
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a receiver operative to receive first and second frames from a mobile station on a reverse link;
said second frame immediately successive to said first frame;one or more processing circuits operatively coupled to said receiver and configured to; classify said first and second frames; send at least a header associated with said second frame to a call anchor associated with said mobile station in response to both said first and second frames being classified differently;
said header indicating the classification of said second frame;abstain from sending said header to said call anchor in response to both said first and second frames being classified as erased frames.
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21. An anchor base station in a wireless communications system, comprising:
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at least a first radio base station operative to receive reverse link transmissions from a plurality of mobile stations, including at least a first mobile station; one or more processing circuits operatively coupled to said radio base station and configured to; track a frame receipt state associated with said first mobile station between at least an idle frame receipt state;
a good frame receipt state, and an erased frame receipt state;supply an indication, corresponding to said first radio base station, to a frame selection algorithm indicating an erased frame in response to being in said erased frame receipt state and receiving neither a frame nor a header from said radio base station at a frame boundary; and supply an indication, corresponding to said first radio base station, to a frame selection algorithm indicating an idle frame in response to being in said idle frame receipt state and receiving neither a frame nor a header from said radio base station at a frame boundary. - View Dependent Claims (22)
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23. A method of controlling frame forwarding operations of a first radio base station in a wireless communications system, comprising:
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receiving first and second successive frames from a mobile station at said first radio base station, said second frame received after said first frame; classifying said first and second frames at said first radio base station; in response to both said first and second frames being classified differently, said first radio base station; if said second frame is other than an idle frame, sending at least a header associated with said second frame to a call anchor associated with said mobile station;
said header indicating the classification of said second frame;if said second frame is an idle frame and said first frame is an erased frame, sending said header to said call anchor;
said header indicating the classification of said second frame;if said second frame is an idle frame and said first frame is a good frame, abstaining from sending said header to said call anchor; in response to both said first and second frames being classified as idle frames, said first radio base station abstaining from sending said header to said call anchor.
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24. A method of supplying frame classification information by an anchor base station to a frame selection algorithm, said anchor base station having at least an idle frame receipt state;
- a good frame receipt state, and an erased frame receipt state;
said method comprising;in response to being in said good frame receipt state and receiving neither a frame nor a header from said first radio base station at a frame boundary, said anchor base station supplying an indication, corresponding to said first base station, to said frame selection algorithm indicating an idle frame and transitioning to said idle frame receipt state; in response to being in said idle frame receipt state and receiving neither a frame nor a header from said first radio base station at a frame boundary, said anchor base station supplying an indication, corresponding to said first base station, to said frame selection algorithm indicating an idle frame and remaining in said idle frame receipt state.
- a good frame receipt state, and an erased frame receipt state;
Specification