Transmission device, reception device, transmission method, and reception method of header information on channel aggregation
A header encoding unit performs bit scramble and LDPC encoding on the PHY control data to generate L-Header and EDMG-Header data. A modulation unit encodes the L-Header and the E-Header output from the header encoding unit. In addition, the modulation unit duplicates the data of the L-Header and the E-Header in accordance with the bandwidth of the channel notified by an RF control unit and arranges the data on a plurality of channels. The modulation unit further modulates one piece of the payload data divided by a payload data dividing unit.
1. A transmission device comprising:
first to (r)th modulation circuits each modulating header information about (r) carriers, where (r) is an integer greater than or equal to 1, each of the (r) carriers having, allocated thereto, at least one of first, second, and third channel groups each in the same predetermined band, the first channel group including (n) channels each having a first bandwidth, where (n) is an integer, the second channel group including (m) channels each formed from two contiguous channels of the first channel group and not duplicated each other, where (m) is an integer less than (n), the third channel group including (p) channels each formed from three contiguous channels of the first channel group and not duplicated each other, where (p) is an integer less than (m); and
first to (r)th transmission circuits that transmit pieces of the modulated header information modulated by the first to (r)th modulation circuits, respectively,
wherein the header information includes (n) bits indicating allocation of the channels of the first channel group and (m) bits indicating allocation of the channels of the second channel group, and
wherein allocation of the channels of the third channel group is indicated by a combination of the (n) bits and the (m) bits.
2. The transmission device according to claim 1 , wherein in allocation of the channels of the first channel group, one channel is allocated by using one of the (n) bits, and
wherein in allocation of the channels of the second channel group, one channel is allocated by using one of the (m) bits.
3. The transmission device according to claim 2 , wherein to each of the channels of the third channel group, a bit allocated to a channel of the first channel group having a band that overlaps each of the channels of the third channel group among the (n) bits and a bit allocated to a channel of the second channel group having a band that overlaps each of the channels of the third channel group among the (m) bits are allocated.
4. The transmission device according to claim 3 , wherein a band of a channel of the second channel group and the band of the channel of the first channel group indicated by a bit allocated to each of the channels of the third channel group have an overlapping band.
5. The transmission device according to claim 1 , wherein the header information includes allocation of a fourth channel group in the predetermined band to the (r) carriers,
wherein the fourth channel group includes (q) channels each formed from four contiguous channels of the first channel group and not duplicated each other, where (q) is an integer less than (m), and
wherein channel allocation of the fourth channel group is indicated by a combination of the (n) bits and the (m) bits.
6. The transmission device according to claim 1 , wherein the first to (r)th transmission circuits transmit the header information over a channel of the first channel group having a band that overlaps the channels of the second and third channel groups allocated to the carriers, respectively.
7. A reception device comprising:
first to (r)th reception circuits that receive first to (r)th signals, respectively, where (r) is an integer greater than or equal to 1;
a decoding circuit that decodes header information from any one of the first to (r)th signals;
a control circuit that controls channels used by the first to (r)th reception circuits by using the header information; and
a payload decoding circuit that decodes the first to (r)th signals output from the first to (r)th reception circuits that are channel-controlled, respectively, and outputs a payload,
wherein each of the first to (r)th signals has, allocated thereto, at least one of a first channel group including (n) channels each having a first bandwidth in a predetermined band, where (n) is an integer, a second channel group including (m) channels each formed from two contiguous channels of the first channel group and not duplicated each other, where (m) is an integer and is less than (n), and a third channel group including (p) channels each formed from three contiguous channels of the first channel group and not duplicated each other, where (p) is an integer less than (m),
wherein the header information includes (n) bits indicating allocation of the channels of the first channel group and (m) bits indicating allocation of the channels of the second channel group, and
wherein allocation of the channels of the third channel group is indicated by a combination of the (n) bits and the (m) bits.
8. The reception device according to claim 7 , wherein in allocation of the channels of the first channel group, one channel is allocated by using one of the (n) bits, and
wherein in allocation of the channels of the second channel group, one channel is allocated by using one of the (m) bits.
9. The reception device according to claim 8 , wherein to each of the channels of the third channel group, a bit allocated to a channel of the first channel group having a band that overlaps each of the channels of the third channel group among the (n) bits and a bit allocated to a channel of the second channel group having a band that overlaps each of the channels of the third channel group among the (m) bits are allocated.
10. The reception device according to claim 8 , wherein a band of a channel of the second channel group and the band of the channel of the first channel group indicated by a bit allocated to each of the channels of the third channel group have an overlapping band.
11. The reception device according to claim 7 , wherein the first to (r)th reception circuits receive the header information over the channels of the first channel group having bands that overlap the channels of the allocated channel group.
12. A transmission method comprising:
modulating, by using first to (r)th modulation circuits, header information about (r) carriers, where (r) is an integer greater than or equal to 1, each of the (r) carriers having, allocated thereto, at least one of first, second, and third channel groups each in the same predetermined band, the first channel group including (n) channels each having a first bandwidth, where (n) is an integer, the second channel group including (m) channels each formed from two contiguous channels of the first channel group and not duplicated each other, where (m) is an integer less than (n), the third channel group including (p) channels each formed from three contiguous channels of the first channel group and not duplicated each other, where (p) is an integer less than (m); and
transmitting, by using first to (r)th transmission circuits, the header information modulated by the first to (r)th modulation circuits, respectively,
wherein the header information includes (n) bits indicating allocation of the channels of the first channel group and (m) bits indicating allocation of the channels of the second channel group, and
wherein allocation of the channels of the third channel group is indicated by a combination of the (n) bits and the (m) bits.
13. A reception method comprising:
receiving first to r(th) signals by using first to (r)th reception circuits, respectively, where (r) is an integer greater than or equal to 1;
decoding header information from any one of the first to (r)th signals;
controlling channels used by the first to (r)th reception circuits by using the header information; and
decoding the first to (r)th signals output from the first to (r)th reception circuits that are channel-controlled, respectively, and outputting a payload,
wherein each of the first to (r)th signals has, allocated thereto, at least one of a first channel group including (n) channels each having a first bandwidth in a predetermined band, where (n) is an integer, a second channel group including (m) channels each formed from two contiguous channels of the first channel group and not duplicated each other, where (m) is an integer and is less than (n), and a third channel group including (p) channels each formed from three contiguous channels of the first channel group and not duplicated each other, where (p) is an integer less than (m), and
wherein the header information includes (n) bits indicating allocation of the channels of the first channel group and (m) bits indicating allocation of the channels of the second channel group, and
wherein allocation of the channels of the third channel group is indicated by a combination of the (n) bits and the (m) bits.