High-speed data transmission in mobile communication networks

• US 6,128,322 A
• Filed: 07/05/1996
• Issued: 10/03/2000
• Est. Priority Date: 03/06/1995
• Status: Expired due to Term

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Telecommunications Oy (Nokia Corporation)
• Inventors: Lin, David, Honkasalo, Harri, Honkasalo, Zhi-Chun, Rasanen, Juha
• Primary Examiner(s): VU, HUY DUY
• Application Number:
  US08/675,898
• Time in Patent Office: 1,551 Days
• Field of Search: 370/536, 370/468, 370/465, 370/437, 370/310, 370/321, 370/337, 370/345, 370/442, 370/433, 370/431, 370/464, 370/473, 370/474, 370/535, 370/537, 370/538, 370/539, 370/540 , 370/541, 370/542, 370/543, 370/544, 370/545, 375/259, 375/260, 375/335, 375/342
• US Class Current: 370/536
• CPC Class Codes: H04B 7/2631 for broadband transmission
• CPC Class Codes: H04B 7/2659 for data rate control
• CPC Class Codes: H04J 3/07 using pulse stuffing for systems with different or fluctuating information rates or bit rates
• CPC Class Codes: H04L 1/0002 by adapting the transmission rate
• CPC Class Codes: H04L 2001/0096 Channel splitting in point-to-point links
• CPC Class Codes: H04L 25/14 Channel dividing arrangements , i.e. in which a single bit stream is divided between several baseband channels and reassembled at the receiver
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 28/22 Negotiating communication rate
• CPC Class Codes: H04W 72/543 based on requested quality, e.g. QoS
• CPC Class Codes: H04W 88/14 Backbone network devices

Abstract

For high-speed data transmission in a digital mobile system, the mobile network allocates n parallel rate-adapted traffic channels to a high-speed user data signal which requires a data transfer rate R_user within a range (n-1)*R_ch <R_user <n*R_ch, wherein R_ch is the maximum transmission rate of a single traffic channel. The user data signal is divided in the transmitter into transmission frames (L, L+1, L+2) for transmission via the parallel traffic channels (ch1-chn) in such a way that all the information bits in the transmission frames of n-1 traffic channels carry user data bits (DATA), and the user data transfer rate of each of the n-1 traffic channels is R_ch. In the frames of the nth traffic channel (chn) the number of the information bits carrying user data bits (DATA) is selected to correspond to the user data rate R_user -(n-1)*R_ch exceeding the capacity of the other n-1 traffic channels. The remaining information bits in the frames of the nth traffic channel carry stuff bits (FILL).

Claims

1. A method for high-speed data transmission over a air interface between a mobile station and a fixed mobile communication network in a digital mobile communication system, said method comprising steps of:

allocating n parallel rate-adapted traffic channels to a high-speed user data signal, which requires a data rate R_user within a range (n-1)*R_ch <

R_user <

n*R_ch, wherein R_ch is the maximum transmission rate of any one of said traffic channels, and n=2,3, . . . ,

dividing the high-speed user data signal into transmission frames for transmission via said parallel traffic channels in such a way that all the information bits in the transmission frames of n-1 traffic channels carry user data bits, and the user data transfer rate of each of said n-1 traffic channels being R_ch, and a number of the information bits carrying user data bits in transmission frames of said nth traffic channel corresponds to the user data transfer rate R_user -(n-1)*R_ch left over from the other n-1 traffic channels, and the remaining information bits in the transmission frames of said nth traffic channel carry stuff bits, and

transmitting said transmission frames over the radio path between a mobile station and a fixed mobile network through said allocated rate-adapted traffic channels.

2. A method for high-speed data transmission over an air interface between a mobile station and a fixed mobile communication network in a digital mobile communication system, said method comprising steps of:

allocating n parallel rate-adapted traffic channels to a high-speed user data signal, which requires a data rate R_user within a range (n-1)*R_ch <

R_user <

n*R_ch, wherein R_ch is the maximum transmission rate of any one of said traffic channels, and n=2,3, . . . ,

dividing the high-speed user data signal into transmission frames for transmission via said parallel traffic channels in such a way that all the information bits in the transmission frames of n-1 traffic channels carry user data bits, and the user data transfer rate of each of said n-1 traffic channels being R_ch, and a number of the information bits carrying user data bits in transmission frames of said nth traffic channel corresponds to the user data transfer rate R_user -(n-1 )*R_ch left over from the other n-₁ traffic channels, and the remaining information bits in the transmission frames of said nth traffic channel carry stuff bits, and

transmitting said transmission frames over the radio path between a mobile station and a fixed mobile network through said allocated rate-adapted traffic channels,

said digital mobile communication system being a code division multiple access (CDMA) system, and said traffic channels being CDMA traffic channels.

3. A method according to claim 2, wherein said CDMA traffic channels are distinguished from each other by different spreading codes.

4. A method according to claim 2, wherein said traffic channels are distinguished from each other by different Walsh functions, comprising

at least one mobile station having a data transmitter and a data receiver,

a mobile communications network having a data transmitter and a data receiver,

the mobile network being arranged to allocate n parallel rate-adapted traffic channels to a mobile station for transmission of a high-speed data signal over an air interface between said mobile station and said mobile communication network, when a data transfer rate R_user required by said high speed data signal is within range (n-1)*R_ch <

R_user <

n*R_ch, wherein R_ch is the maximum transmission rate of an individual traffic channel and n=2,3, . . . ,

said data transmitters being arranged to divide the high-speed user data signal into transmission frames for transmission via said allocated parallel traffic channels in such a way that all the information bits in the transmission frames of n-1 traffic channels carry user data bits, and the user data transfer rate of each of said n-1 traffic channel being R_ch, and a number of the information bits carrying user data bits in the transmission frames of the nth traffic channel corresponds to the user data transfer rate R_user -(n-1)*R_ch left over from the other n-1 traffic channels, and the remaining information bits in the transmission frames of said nth traffic channel carry stuff bits.

5. A digital mobile communication system, comprising:

at least one mobile station having a data transmitter and a data receiver, and

a mobile communications network having a data transmitter and a data receiver,

the mobile network being arranged to allocate n parallel rate-adapted traffic channels to a mobile station for transmission of a high-speed data signal over an air interface between said mobile station and said mobile communication network, when a data transfer rate R_user required by said high speed data signal is within range (n-1)*R_ch <

R_user <

n*R_ch, wherein R_ch is the maximum transmission rate of an individual traffic channel and n=2,3, . . . ,

said data transmitters being arranged to divide the high-speed user data signal into transmission frames for transmission via said allocated parallel traffic channels in such a way that all the information bits in the transmission frames of n-1 traffic channels carry user data bits, and the user data transfer rate of each of said n-1 traffic channel being R_ch, and a number of the information bits carrying user data bits in the transmission frames of the nth traffic channel corresponds to the user data transfer rate R_user -(n-1)*R_ch left over from the other n-1 traffic channels, and the remaining information bits in the transmission frames of said nth traffic channel carry stuff bits.

9. A system according to claim 5, wherein the maximum transmission rate R_ch of the traffic channel is 9.6 Kbps.

6. A digital mobile communication system, comprising:

at least one mobile station having a data transmitter and a data receiver, and

a mobile communications network having a data transmitter and a data receiver,

the mobile network being arranged to allocate n parallel rate-adapted traffic channels to a mobile station for transmission of a high-speed data signal over an air interface between said mobile station and said mobile communication network, when a data transfer rate R_user required by said high speed data signal is within range (n-1)*R_ch <

R_user <

n*R_ch, wherein R_ch is the maximum transmission rate of an individual traffic channel and n=2,3, . . . ,

said data transmitters being arranged to divide the high-speed data signal into transmission frames for transmission via said allocated parallel traffic channels in such a way that all the information bits in the transmission frames of n-1 traffic channels carry user data bits and the user data transfer rate of each of said n-1 traffic channel being R_ch, and a number of the information bits carrying user data bits in the transmission frames of the nth traffic channel corresponds to the user data transfer rate R_user -(n-1)*R_ch left over from the other n-1 traffic channels, and the remaining information bits in the transmission frames of said nth traffic channel carry stuff bits,

said digital mobile communication system being a code division multiple access (CDMA) system, and said traffic channels being CDMA traffic channels.

7. A system according to claim 6, wherein said CDMA traffic channels are distinguished from each other by different spreading codes.

8. A system according to claim 6, wherein said traffic channels are distinguished from each other by different Walsh functions.

10. A mobile station for a digital mobile communication system having capability of allocating n parallel rate-adapted traffic channels to a mobile station for transmission of a high-speed data signal over an air interface between said mobile station and said mobile communication network, when a data transfer rate R_user required by said high speed data signal is within range (n-1)*R_ch <

R_user <

n*R_ch, wherein R_ch is the maximum transmission rate of an individual traffic channel and n=2,3, . . . , said mobile station comprising;

a data transmitter and a data receiver,

said data transmitter being arranged to divide the high-speed user data signal into transmission frames for transmission via said allocated parallel traffic channels in such a way that all the information bits in the transmission frames of n-1 traffic channels carry user data bits, and the user data transfer rate of each of said n-1 traffic channel being R_ch, and a number of the information bits carrying user data bits in the transmission frames of the nth traffic channel corresponds to the user data transfer rate R_user -(n-1)*R_ch left over from the other n-1 traffic channels, and the remaining information bits in the transmission frames of said nth traffic channel carry stuff bits.

11. A mobile station for a digital mobile communication system having capability of allocating n parallel rate-adapted traffic channels to a mobile station for transmission of a high-speed data signal over an air interface between said mobile station and said mobile communication network, when a data transfer rate R_user required by said high speed data signal is within range (n-1)*R_ch <

R_user <

n*R_ch, wherein R_ch is the maximum transmission rate of an individual traffic channel and n=2,3, . . . , said mobile station comprising;

a data transmitter and a data receiver,

said data transmitter being arranged to divide the high-speed user data signal into transmission frames for transmission via said allocated parallel traffic channels in such a way that all the information bits in the transmission frames of n-1 traffic channels carry user data bits, and the user data transfer rate of each of said n-1 traffic channel being R_ch, and a number of the information bits carrying user data bits in the transmission frames of the nth traffic channel corresponds to the user data transfer rate R_user -(n-1)*R_ch left over from the other n-1 traffic channels, and the remaining information bits in the transmission frames of said nth traffic channel carry stuff bits,

said digital mobile communication system being a code division multiple access (CDMA) system, and said traffic channels being CDMA traffic channels.

12. A mobile station according to claim 11, wherein said CDMA traffic channels are distinguished from each other by different spreading codes.

13. A mobile station according to claim 11, wherein said traffic channels are distinguished from each other by different Walsh functions.

14. A method for high-speed transmission over an air interface between a mobile station and a fixed mobile communication network in a digital mobile communication system, said method comprising:

allocating n parallel traffic channels for a high-speed data transmission over said air interface between said mobile station and said fixed mobile communication network, wherein n is at least 2,

rate-adapting each of said traffic channels individually for a transmission rate R_ch,

providing a high-speed user data signal requiring a data rate R_user which is within a range (n-1)*R_ch <

R_user <

n*R_ch, but unequal to a multiple of R_ch,

dividing the high-speed user data signal into transmission frames for transmission via said n parallel traffic channels so that in a majority of said transmission frames all information bits are carrying user data and so that information bits in a minority of said transmission frames are carrying both user both data and stuff bits,

transmitting ones of said transmission frames in which all of said information bits carry user data bits over n-1 of said parallel traffic channels so that a user data rate (n-1)*R_ch is transmitted over said n-1 traffic channels,

transmitting ones of said transmission frames in which said information bits carry user data and stuff bits over said nth traffic channel of said n traffic channels so that a user data rate R_user -(n-1)*R_ch is transmitted over said nth traffic channel while a total transmission rate of the nth traffic channel is R_ch.

15. A method for high-speed transmission over an air interface between a mobile station and a fixed mobile communication network in a digital mobile communication system, said method comprising:

allocating n parallel traffic channels for a high-speed data transmission over said air interface between said mobile station and said fixed mobile communication network, wherein n is at least 2,

carrying out a rate-adaptation according to a CCITT specification V.110 to each of said traffic channels individually for a transmission rate R_ch,

providing a high-speed user data signal requiring a data rate R_user which is within a range (n-1)*R_ch <

R_user <

n*R_ch, but unequal to a multiple of R_ch,

dividing the high-speed user data signal into transmission frames for transmission via said n parallel traffic channels so that in a majority of said transmission frames all information bits are carrying user data and so that information bits in a minority of said transmission frames are carrying both user data and stuff bits,

transmitting ones of said transmission frames in which all of said information bits carry user data bits over n-1 of said parallel traffic channels so that a user data rate (n-1)*R_ch is transmitted over said n-1 traffic channels,

transmitting ones of said transmission frames in which said information bits carry user data and stuff bits over the nth traffic channel of said n traffic channels so that a user data rate R_user -(n-1)*R_ch is transmitted over said nth traffic channel while a total transmission rate of the nth traffic channel is R_ch.