Abstract
Methods and systems are provided for use with wireless networks having one 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 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.
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Specification Information
Specification Information
Technologies
Family Information
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Technologies
Network Management and Planning
Product
Use Cases
Wireless communication
Services
Claim
1. A method comprising:
transmitting Relay Media Access Protocol (�R-MAP�) information in at least one frame of a series of frames, each frame comprising multiple OFDM symbols, to indicate configuration of a transmission resource and/or assignment of a transmission resource for downlink and uplink communication between a base station and at least one relay station one hop away from the base station, or between a relay station and at least one other relay station one hop away from the relay station,
wherein transmitting the R-MAP information comprises:
transmitting an indication that the information is R-MAP information,
transmitting an indication of a total number of transmission resource assignment information segments included in the R-MAP information; and
for each transmission resource assignment information segment, transmitting information defining a particular configuration of a transmission resource or an assignment of the transmission resource for at least one frame of the series of frames,
wherein transmitting information defining a particular configuration of a transmission resource or an assignment of the transmission resource comprises transmitting at least one of:
configuration information for defining a basic resource unit (BRU) to be assigned;
configuration information for defining a region of time-frequency of the at least one frame to be assigned;
assignment information for assigning at least one BRU; and
assignment information for assigning at least one region of time-frequency of the at least one frame.
2. The method of claim 1 wherein transmitting configuration information for defining a basic resource unit (BRU) to be assigned comprises transmitting:
a length of the configuration information;
a first OFDM symbol index indicating an index of an OFDM symbol at which a downlink relay station (DL_RS) Zone begins;
a first number of OFDM symbols indicating a number of OFDM symbols which the DL_RS Zone occupies;
an indication of a number of sub-channels which are included in each downlink basic resource unit (DL BRU) of the DL_RS Zone;
a second OFDM symbol index indicating an index of an OFDM symbol at which an uplink relay station (UL_RS) Zone begins;
a second number of OFDM symbols indicating a number of OFDM symbols which the UL_RS Zone occupies;
an indication of a number of slots which are included in each uplink basic resource unit (UL BRU) of the UL_RS Zone;
an indication of a number of frames before the configuration takes effect, starting from the current frame.
3. The method of claim 1 wherein transmitting configuration information for defining a basic resource unit (BRU) to be assigned comprises transmitting configuration information in the form of an Information Element (IE) consistent with the following format:
Syntax
Size
Notes
RS Zone BRU
Configuration IE {
Type
4 bits
0x00
Length
4 bits
Length in bytes
OFDM symbol index for
8 bits
Indicates the OFDM symbol
DL_RS Zone
index starting a DL_RS
Zone
Number of OFDM symbols
4 bits
Indicates the number of
OFDM symbols a DL_RS Zone
occupies
DL BRU
4 bits
Indicates the number of
sub-channels a DL BRU
includes
OFDM symbol index for
8 bits
Indicates the OFDM symbol
UL_RS Zone
index starting a UL_RS
Zone
Number of OFDM symbols
4 bits
Indicates the number of
OFDM symbols a UL_RS Zone
occupies
UL BRU
4 bits
Indicates the number of
slots a UL BRU includes
Number of frames before
4 bits
Indicates the number of
effective
frames before the
configuration takes effect
(starting from the current
frame)
}
4. The method of claim 1 wherein transmitting configuration information for defining a region of time-frequency of the at least one frame to be assigned comprises transmitting:
a length of the configuration information;
a first OFDM symbol index indicating an index of an OFDM symbol at which a DL_RS Zone begins;
a first number of OFDM symbols indicating a number of OFDM symbols which the DL_RS Zone occupies;
an indication of a number of regions defined in the DL_RS Zone;
for each region of the number of regions defined in the DL_RS Zone:
an indication of a number of sub-channels in the DL region;
a second OFDM symbol index indicating an index of an OFDM symbol at which an UL_RS Zone begins;
a second number of OFDM symbols indicating a number of OFDM symbols which the UL_RS Zone occupies;
an indication of a number of regions defined in the UL_RS Zone;
for each region of the number of regions defined in the UL_RS Zone:
an indication of a number of slots an uplink basic resource unit (UL BRU) includes;
an indication of a number of frames before the configuration takes effect, starting from the current frame.
5. The method of claim 1 wherein transmitting configuration information for defining a region of time-frequency of the at least one frame to be assigned comprises transmitting configuration information in the form of an IE consistent with the following format:
Syntax
Size
Notes
RS Zone Region
Configuration IE {
Type
4 bits
0x00
Length
4 bits
Length in byte
OFDM symbol index for
8 bits
Indicates the OFDM symbol
DL_RS Zone
index starting a DL_RS
Zone
Number of OFDM symbols
4 bits
Indicates the number of
OFDM symbols a DL_RS Zone
occupies
Number of DL region
6 bits
Indicates the number of
regions defined in DL_RS
Zone
For (i=0;i
Number of subchannels }
4 bits
Indicates the number of
sub-channels the region
includes
OFDM symbol index for
8 bits
Indicates the OFDM symbol
UL RS_Zone
index starting a UL_RS
Zone
Number of OFDM symbols
4 bits
Indicate the number of
OFDM symbols a UL_RS Zone
occupies
Number of UL region
6 bits
Indicates the number of
regions defined in UL_RS
Zone
For (i=0;I
Number of slots }
4 bits
Indicates the number of
slots the region includes
Number of frames before
4 bits
Indicates the number of
effective
frames before the
configuration takes effect
(starting from the current
frame)
}
6. The method of claim 1 wherein transmitting assignment information for assigning at least one BRU comprises transmitting:
a relay station identifier (RSID) indicating a particular destination relay station to which the transmission resource is assigned;
an indication of a number of DL BRU assigned to an RS identified with the RSID;
an indication of the modulation and coding scheme (MCS) used for the transmission resource assigned to the RS identified with the RSID;
an indication of a number of UL BRU assigned to the RS identified with the RSID;
an indication of the MCS used for the transmission resource assigned to the RS identified with the RSID.
7. The method of claim 1 wherein transmitting assignment information for assigning at least one BRU comprises transmitting configuration information in the form of an IE consistent with the following format:
Syntax
Size
Notes
RS BRU Resource
Assignment IE {
Type
4 bits
0x01
RSID
8 bits
Relay station ID
Number of DL BRU
6 bits
Indicates the number of
DL BRUs assigned to an RS
identified by RSID
DL MCS
4 bits
Indicates the modulation
and coding scheme (MCS)
to be used in the
resource assignment for
the RS identified by RSID
Number UL BRU
6 bits
Indicates the number of
UL BRUs assigned to an RS
identified by RSID
UL MCS
4 bits
Indicates the MCS to be
used in the resource
assignment for the RS
identified by RSID
}
8. The method of claim 1 wherein transmitting assignment information for assigning at least one region of time-frequency of the at least one frame comprises transmitting:
a relay station identifier (RSID) indicating a particular destination relay station that the resource assignment is directed to;
a DL region identifier (DL region ID) identifying a DL region assigned to the RS identified by the RSID;
an indication of the MCS used for the DL region identified by the DL region ID;
a UL region identifier (UL region ID) identifying a UL region assigned to the RS identified by the RSID;
an indication of the MCS used for the UL region identified by the DL region ID.
9. The method of claim 1 wherein transmitting assignment information for assigning at least one region of time-frequency of the at least one frame comprises transmitting configuration information in the form of an IE consistent with the following format:
Syntax
Size
Notes
RS Region Resource
Assignment IE {
Type
4 bits
0x01
RSID
8 bits
Relay station ID
DL region ID
6 bits
Indicates an
identification of
a DL region
assigned to an RS
identified by RSID
DL MCS
4 bits
Indicates the MCS
to be used in the
resource
assignment for the
RS identified by
RSID
UL region ID
6 bits
Indicates an
identification of
an UL region
assigned to an RS
identified by RSID
UL MCS
4 bits
Indicates the MCS
to be used in the
resource
assignment for the
RS identified by
RSID
}
10. A network device comprising:
at least one antenna;
transmit circuitry configured to:
transmit Relay Media Access Protocol (�R-MAP�) information in at least one frame of a series of frames, each frame comprising multiple OFDM symbols, to indicate configuration of a transmission resource and/or assignment of a transmission resource for downlink and uplink communication between a base station and at least one relay station one hop away from the base station, or between a relay station and at least one other relay station one hop away from the relay station,
wherein the R-MAP information comprises:
an indication that the information is R-MAP information, an indication of a total number of transmission resource assignment information segments included in the R-MAP information, and, for each transmission resource assignment information segment, information defining a particular configuration of a transmission resource or an assignment of the transmission resource for at least one frame of the series of frames,
wherein the information defining a particular configuration of a transmission resource or an assignment of the transmission resource comprises at least one of:
configuration information for defining a basic resource unit (BRU) to be assigned;
configuration information for defining a region of time-frequency of the at least one frame to be assigned;
assignment information for assigning at least one BRU; and
assignment information for assigning at least one region of time-frequency of the at least one frame.
11. The network device of claim 10 wherein the configuration information for defining a basic resource unit (BRU) to be assigned comprises:
a length of the configuration information;
a first OFDM symbol index indicating an index of an OFDM symbol at which a downlink relay station (DL_RS) Zone begins;
a first number of OFDM symbols indicating a number of OFDM symbols which the DL_RS Zone occupies;
an indication of a number of sub-channels which are included in each downlink basic resource unit (DL BRU) of the DL_RS Zone;
a second OFDM symbol index indicating an index of an OFDM symbol at which an uplink relay station (UL_RS) Zone begins;
a second number of OFDM symbols indicating a number of OFDM symbols which the UL_RS Zone occupies;
an indication of a number of slots which are included in each uplink basic resource unit (UL BRU) of the UL RS Zone;
an indication of a number of frames before the configuration takes effect, starting from the current frame.
12. The network device of claim 10 wherein the configuration information for defining a basic resource unit (BRU) to be assigned comprises configuration information in the form of an Information Element (IE) consistent with the following format:
Syntax
Size
Notes
RS Zone BRU
Configuration IE {
Type
4 bits
0x00
Length
4 bits
Length in bytes
OFDM symbol index for
8 bits
Indicates the OFDM symbol
DL_RS Zone
index starting a DL_RS
Zone
Number of OFDM symbols
4 bits
Indicates the number of
OFDM symbols a DL_RS Zone
occupies
DL BRU
4 bits
Indicates the number of
sub-channels a DL BRU
includes
OFDM symbol index for
8 bits
Indicates the OFDM symbol
UL_RS Zone
index starting a UL_RS
Zone
Number of OFDM symbols
4 bits
Indicates the number of
OFDM symbols a UL_RS Zone
occupies
UL BRU
4 bits
Indicates the number of
slots a UL BRU includes
Number of frames before
4 bits
Indicates the number of
effective
frames before the
configuration takes effect
(starting from the current
frame)
}
13. The network device of claim 10 wherein the configuration information for defining a region of time-frequency of the at least one frame to be assigned comprises:
a length of the configuration information;
a first OFDM symbol index indicating an index of an OFDM symbol at which a DL_RS Zone begins;
a first number of OFDM symbols indicating a number of OFDM symbols which the DL_RS Zone occupies;
an indication of a number of regions defined in the DL_RS Zone;
for each region of the number of regions defined in the DL_RS Zone:
an indication of a number of sub-channels in the DL region;
a second OFDM symbol index indicating an index of an OFDM symbol at which an UL_RS Zone begins;
a second number of OFDM symbols indicating a number of OFDM symbols which the UL_RS Zone occupies;
an indication of a number of regions defined in the UL_RS Zone;
for each region of the number of regions defined in the UL_RS Zone:
an indication of a number of slots an uplink basic resource unit (UL BRU) includes;
an indication of a number of frames before the configuration takes effect, starting from the current frame.
14. The network device of claim 10 wherein the configuration information for defining a region of time-frequency of the at least one frame to be assigned comprises configuration information in the form of an IE consistent with the following format:
Syntax
Size
Notes
RS Zone Region
Configuration IE {
Type
4 bits
0x00
Length
4 bits
Length in byte
OFDM symbol index for
8 bits
Indicates the OFDM symbol
DL_RS Zone
index starting a DL_RS
Zone
Number of OFDM symbols
4 bits
Indicates the number of
OFDM symbols a DL_RS Zone
occupies
Number of DL region
6 bits
Indicates the number of
regions defined in DL_RS
Zone
For (i=0;i
Number of subchannels }
4 bits
Indicates the number of
sub-channels the region
includes
OFDM symbol index for
8 bits
Indicates the OFDM symbol
UL RS_Zone
index starting a UL_RS
Zone
Number of OFDM symbols
4 bits
Indicate the number of
OFDM symbols a UL_RS Zone
occupies
Number of UL region
6 bits
Indicates the number of
regions defined in UL_RS
Zone
For (i=0;I
Number of slots }
4 bits
Indicates the number of
slots the region includes
Number of frames before
4 bits
Indicates the number of
effective
frames before the
configuration takes effect
(starting from the current
frame)
}
15. The network device of claim 10 wherein the assignment information for assigning at least one BRU comprises:
a relay station identifier (RSID) indicating a particular destination relay station to which the transmission resource is assigned;
an indication of a number of DL BRU assigned to an RS identified with the RSID;
an indication of the modulation and coding scheme (MCS) used for the transmission resource assigned to the RS identified with the RSID;
an indication of a number of UL BRU assigned to the RS identified with the RSID;
an indication of the MCS used for the transmission resource assigned to the RS identified with the RSID.
16. The network device of claim 10 wherein the assignment information for assigning at least one BRU comprises configuration information in the form of an IE consistent with the following format:
Syntax
Size
Notes
RS BRU Resource
Assignment IE {
Type
4 bits
0x01
RSID
8 bits
Relay station ID
Number of DL BRU
6 bits
Indicates the number of
DL BRUs assigned to an RS
identified by RSID
DL MCS
4 bits
Indicates the modulation
and coding scheme (MCS)
to be used in the
resource assignment for
the RS identified by RSID
Number UL BRU
6 bits
Indicates the number of
UL BRUs assigned to an RS
identified by RSID
UL MCS
4 bits
Indicates the MCS to be
used in the resource
assignment for the RS
identified by RSID
}
17. The network device of claim 10 wherein the assignment information for assigning at least one region of time-frequency of the at least one frame comprises:
a relay station identifier (RSID) indicating a particular destination relay station that the resource assignment is directed to;
a DL region identifier (DL region ID) identifying a DL region assigned to the RS identified by the RSID;
an indication of the MCS used for the DL region identified by the DL region ID;
a UL region identifier (UL region ID) identifying a UL region assigned to the RS identified by the RSID;
an indication of the MCS used for the UL region identified by the DL region ID.
18. The network device of claim 10 wherein assignment information for assigning at least one region of time-frequency of the at least one frame comprises configuration information in the form of an IE consistent with the following format:
Syntax
Size
Notes
RS Region Resource
Assignment IE {
Type
4 bits
0x01
RSID
8 bits
Relay station ID
DL region ID
6 bits
Indicates an
identification of
a DL region
assigned to an RS
identified by RSID
DL MCS
4 bits
Indicates the MCS
to be used in the
resource
assignment for the
RS identified by
RSID
UL region ID
6 bits
Indicates an
identification of
an UL region
assigned to an RS
identified by RSID
UL MCS
4 bits
Indicates the MCS
to be used in the
resource
assignment for the
RS identified by
RSID
}
19. The network device of claim 10 wherein the network device is a base station or a relay station.
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The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.