Zones for wireless networks with relays

摘要

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.

主权项

1. A method comprising:
in a network comprising a plurality of network nodes, the plurality of network nodes comprising at least one base station (BS), at least one relay station (RS) and at least one mobile station (MS), at least one of the plurality of network nodes 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.