ZONES FOR WIRELESS NETWORKS WITH RELAYS
First Claim
1. A method comprising:
- allocating an OFDM transmission resource having a frequency dimension consisting of a set of OFDM sub-carriers and a time dimension consisting of OFDM symbols using zones, each zone comprising a set of consecutive OFDM symbols by;
for a base station (BS), allocating a DL_MS zone for transmitting to mobile stations (MSs), and allocating a DL_RS zone for transmitting to relay stations (RSs);
for each relay station, allocating a DL_MS zone for transmitting to mobile stations, and allocating a DL_RS zone for transmitting to other relay stations if present;
for the base station, allocating a UL_MS zone for receiving from mobile stations, and allocating a UL_RS zone for receiving from relay stations;
for each relay station, allocating a UL_MS zone for receiving from mobile stations, and allocating a UL_RS zone for receiving from other relay stations if present.
3 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems are provided for use with wireless networks having once or more cell in which each cell includes a base station (BS), at least one relay station (RS) and at least one mobile station (MS). The at least one relay station can be used as an intermediate station for providing communication between the BS and MS. Methods are provided for an RS to initially access the network, access of the RS by MSs initially accessing the network, methods of allocating OFDM resources for communicating between the BS, RS and/or MS for example dividing transmission resources into uplink and downlink transmissions, and methods of inserting pilot symbols into transmission resources used by the RS. In some embodiments on the invention, the methods are consistent and/or can be used in conjunction with existing standards such as 802.16e.
261 Citations
72 Claims
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1. A method comprising:
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allocating an OFDM transmission resource having a frequency dimension consisting of a set of OFDM sub-carriers and a time dimension consisting of OFDM symbols using zones, each zone comprising a set of consecutive OFDM symbols by; for a base station (BS), allocating a DL_MS zone for transmitting to mobile stations (MSs), and allocating a DL_RS zone for transmitting to relay stations (RSs); for each relay station, allocating a DL_MS zone for transmitting to mobile stations, and allocating a DL_RS zone for transmitting to other relay stations if present; for the base station, allocating a UL_MS zone for receiving from mobile stations, and allocating a UL_RS zone for receiving from relay stations; for each relay station, allocating a UL_MS zone for receiving from mobile stations, and allocating a UL_RS zone for receiving from other relay stations if present. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method comprising:
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each relay station transmitting a first preamble for use by mobile stations; each relay station transmitting a second preamble for use by other relay stations. - View Dependent Claims (20, 21, 22, 23, 24)
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25-40. -40. (canceled)
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41. A method for use in an OFDM communication system employing relay stations comprising:
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dividing communications into frames each comprising multiple OFDM symbols; dividing the frames into first and second groups of frames, the first group of frames being used for communication between a base station (BS) and RSs one-hop away from the BS, and for communications between the BS and its respective mobile stations (MSs), the first group also being used for communication between RSs two-hops away from the BS and its respective MSs, and the second group of frames being used for communication between the RSs one-hop away from the BS and any RS/MS it is communicating with. - View Dependent Claims (42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71)
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52-58. -58. (canceled)
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72-114. -114. (canceled)
Specification