Information transmission method, mobile communications system, base station and mobile station
View Patent ↗In an information transmission method, a radio communications system, a base station and a mobile station, a TBS size, a modulation scheme and the number of codes in a multicode are converted into identification data having a relatively smaller data size before being transmitted to a destination of communication. The TBS size is identified by using, in combination, an identification code identifying a channelization code set, an identification code identifying a modulation scheme, and an identification code obtained by converting a combination of the number of codes in a multicode and a modulation pattern identification (TFRC) into a corresponding code. Accordingly, the data size for TBS size identification is reduced.
1. An information communication method in a base station of performing communication using a plurality of channelization codes based on code division multiple access, comprising:
transmitting to a mobile station
a modulation scheme for use in the code division multiple access,
a number of the channelization codes assigned to the mobile station, and
an identification code corresponding to a transport block set size,
wherein the transmitted identification code corresponding to the transport block set size is continuous numbers, and the continuous numbers are transmitted to the mobile station by using bits which are assigned for signaling of the identification code corresponding to the transport block set size,
the transport block set size belongs to a first set of transport block set sizes or a second set of transport block set sizes different from the first set of transport block set sizes,
the transport block set size included in the first set of the transport block set sizes can be obtained in the mobile station by a part of the continuous numbers, the modulation scheme, and the number of the channelization codes, and
the transport block set size included in the second set of the transport block set sizes is different from that included in the first set of the transport block set sizes.
2. The information communication method according to claim 1 , further comprising:
generating an identification data comprising the modulation scheme, the number of the channelization codes, and the identification code,
wherein the transmitting step includes transmitting the identification data to the mobile station.
3. The information communication method according to claim 1 , wherein the transport block set size included in the first set of the transport block set sizes is obtained in the mobile station by using a table which includes transport block set sizes calculated based on each number in the part of the continuous numbers, the modulation scheme, and the number of the channelization codes.
4. A base station for performing communication using a plurality of channelization codes based on code division multiple access, comprising:
a transmitting means for transmitting to a mobile station a modulation scheme for use in the code division multiple access, a number of the channelization codes assigned to the mobile station, and an identification code corresponding to a transport block set size,
wherein the identification code corresponding to the transport block set size transmitted by the transmitting means is continuous numbers, the transmitting means transmits the continuous numbers to the mobile station by using bits which are assigned for signaling of the identification code corresponding to the transport block set size,
the transport block set size belongs to a first set of transport block set sizes or a second set of transport block set sizes different from the first set of transport block set sizes, and
the transport block set size included in the first set of the transport block set sizes can be obtained in the mobile station based on a part of the continuous numbers, the modulation scheme, and the number of the channelization codes, and
the transport block set size included in the second set of the transport block set sizes is different from that included in the first set of the transport block set sizes
generating means for generating an identification data comprising the modulation scheme, the number of the channelization codes, and the identification code,
wherein the transmitting means for transmitting includes means for transmitting the identification data to the mobile station.
5. The base station according to claim 4 , wherein the transport block set size included in the first set of the transport block set sizes is obtained in the mobile station based on a table which includes transport block set sizes calculated based on each number in the part of the continuous numbers, the modulation scheme, and the number of the channelization codes.
6. An information communication method of performing communication between a base station and a mobile station using a plurality of channelization codes based on code division multiple access, comprising:
transmitting from the base station a modulation scheme for use in the code division multiple access, a number of the channelization codes assigned to the mobile station, and an identification code corresponding to a transport block set size;
receiving in the mobile station the modulation scheme for use in the code division multiple access, the number of the channelization codes assigned to the mobile station, and the identification code corresponding to the transport block set size; and
identifying in the mobile station the transport block set size based on the received identification code corresponding to the transport block set size,
wherein the identification code corresponding to the transport block set size is continuous numbers expressed by combining bits assigned for signaling of the identification code corresponding to the transport block set size,
the transport block set size belongs to a first set of transport block set sizes or a second set of transport block set sizes different from the first set of transport block set sizes, and
in the identifying, the transport block set size included in the first set of the transport block set sizes is obtained by a part of the continuous numbers, the modulation scheme, and the number of the channelization codes, and
the transport block set size included in the second set of the transport block set sizes is different from that included in the first set of the transport block set sizes.
7. The information communication method according to claim 6 , further comprising:
generating, in the base station, an identification data comprising the modulation scheme, the number of the channelization codes, and the identification code,
wherein the transmitting step includes transmitting the identification data to the mobile station.
8. The information communication method according to claim 6 , wherein during the identifying performed by the mobile station, the transport block set size included in the first set of the transport block set sizes is obtained using a table which includes transport block set sizes calculated based on each number in the part of the continuous numbers, the modulation scheme, and the number of the channelization codes.
9. A mobile communication system for performing communication between a base station and mobile stations using a plurality of channelization codes based on code division multiple access, wherein:
the base station comprises
a transmitting means for transmitting to a mobile station a modulation scheme for use in the code division multiple access, a number of the channelization codes assigned to the mobile station, and an identification code corresponding to a transport block set size; and
the mobile station comprises
a receiving means for receiving the modulation scheme for use in the code division multiple access, the number of the channelization codes assigned to the mobile station, and the identification code corresponding to the transport block set size, and
an identifying means for identifying the transport block set size based on the received identification code corresponding to the transport block set size,
wherein the identification code corresponding to the transport block set size is continuous numbers expressed by combining bits assigned for signaling of the identification code corresponding to the transport block set size,
the transport block set size belongs to a first set of transport block set sizes or a second set of transport block set sizes different from the first set of transport block set sizes,
the identifying means obtains the transport block set size included in the first set of the transport block set sizes based on a part of the continuous numbers, the modulation scheme, and the number of the channelization codes, and
the transport block set size included in the second set of the transport block set sizes is different from that included in the first set of the transport block set sizes.
10. The mobile communication system according to claim 9 , wherein the base station further comprises:
a generating means for generating, in the base station, an identification data comprising the modulation scheme, the number of the channelization codes, and the identification code,
wherein the transmitting means for transmitting further comprises means for transmitting the identification data to the mobile station.
11. The mobile communication system according to claim 9 , wherein the identifying means in the mobile station obtains the transport block set size included in the first set of the transport block set sizes using a table which includes each number in the part of the continuous numbers, the modulation scheme, and the number of the channelization codes.