Method of operating a radio communications network, terminal and base station

• US 20070121551A1
• Filed: 10/19/2006
• Published: 05/31/2007
• Est. Priority Date: 11/28/2005
• Status: Abandoned Application

• Current Assignee: Alcatel SA (Nokia Corporation)
• Original Assignee: Alcatel SA (Nokia Corporation)
• Inventors: Rouffet, Denis, Capdevielle, Veronique, Faye, Jean-Claude
• Application Number:
  US11/582,952
• Publication Number:
  US 20070121551A1
• Time in Patent Office: Days
• US Class Current: 370/332
• CPC Class Codes: H04L 47/10 Flow control; Congestion control
• CPC Class Codes: H04L 47/2416 Real-time traffic
• CPC Class Codes: H04L 47/25 with rate being modified by the source upon detecting a change of network conditions
• CPC Class Codes: H04L 49/90 Buffering arrangements
• CPC Class Codes: H04N 21/23406 involving management of server-side video buffer
• CPC Class Codes: H04N 21/238 Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams hybrid fiber coaxial [HFC] networks for downstream channel allocation for video distribution H04L12/2801; flow control in packet networks H04L47/10; real-time communication protocols in data switching networks H04L65/00; scheduling or organising the servicing of application requests H04L67/60
• CPC Class Codes: H04N 21/23805 Controlling the feeding rate to the network, e.g. by controlling the video pump
• CPC Class Codes: H04N 21/262 Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists scheduling strategies for dispatcher in multiprogramming arrangements G06F9/4881; arrangements for scheduling broadcast services or broadcast-related services H04H60/06; flow control in packet networks H04L47/10; establishing a time schedule or organising the servicing of application requests H04L67/62
• CPC Class Codes: H04N 21/41407 embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop constructional details of equipment or arrangements specially adapted for portable computer application G06F1/1626; arrangements specially adapted for mobile receivers in broadcast systems H04H20/57
• CPC Class Codes: H04N 21/4331 Caching operations, e.g. of an advertisement for later insertion during playback
• CPC Class Codes: H04N 21/44004 involving video buffer management, e.g. video decoder buffer or video display buffer
• CPC Class Codes: H04N 21/44209 Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network arrangements for maintenance or administration in data switching networks involving bandwidth and capacity management H04L41/0896
• CPC Class Codes: H04N 21/4424 Monitoring of the internal components or processes of the client device, e.g. CPU or memory load, processing speed, timer, counter or percentage of the hard disk space used error monitoring in general G06F11/30; arrangements for monitoring conditions of receiving stations in broadcast systems H04H60/32; diagnosis, testing or measuring for television receivers H04N17/04
• CPC Class Codes: H04N 21/6377 directed to server one-way streaming services wherein the source is controlled by the destination H04L65/613
• CPC Class Codes: H04N 21/658 Transmission by the client directed to the server
• CPC Class Codes: H04N 21/6582 Data stored in the client, e.g. viewing habits, hardware capabilities, credit card number arrangements where receivers interact with the broadcast H04H20/38
• CPC Class Codes: H04W 28/0205 at the air interface dynamic wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 28/0231 based on communication conditions dynamic wireless traffic scheduling definition based on channel quality criteria H04W72/54
• CPC Class Codes: H04W 28/0278 using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• CPC Class Codes: H04W 28/14 using intermediate storage
• CPC Class Codes: H04W 28/26 : Resource reservation
• CPC Class Codes: H04W 8/04 : Registration at HLR or HSS [Home Subscriber Server]

Abstract

The invention relates to a method of operating a radio communications network (100), wherein data is transmitted from a base station (10) of said network (100) to a terminal (20) via a radio link (15). The inventive method is characterized in that data to be transmitted from said base station (20) to said terminal (20) is transmitted in advance to said terminal depending on current data transmission conditions of said radio link (15) and stored to a cache memory (21) of said terminal (20).

Claims

1. A method of operating a radio communications network, wherein data is transmitted from a base station of said network to a terminal via a radio link, characterized in that data to be transmitted from said base station to said terminal is transmitted to said terminal in advance depending on current data transmission conditions of said radio link, and in that said data which has been transmitted in advance is stored to a cache memory of said terminal.

2. The method according to claim 1, wherein said data which is transmitted in advance to said terminal is transmitted with the highest data rate possible for said data transmission.

3. The method according to claim 1, wherein a data rate for transmitting data in advance to said terminal is selected depending on a carrier to interference ratio, C/I, of said radio link between said base station and said terminal.

4. The method according to claim 1, wherein data is transmitted from said base station to said terminal if a maximum possible data rate is below a predetermined threshold.

5. The method according to claim 1, wherein data is transmitted from said base station to said terminal if a current carrier to interference ratio, C/I, of said radio link between said base station and said terminal is below a predetermined threshold.

6. The method according to claim 1, wherein a data transmission from said base station to said terminal is performed depending on a filling status of said cache memory of said terminal.

7. The method according to claim 1, wherein said terminal consumes data that has previously been stored to its cache memory wherein depending on a current data rate and/or carrier to interference ratio, C/I, of said radio link between said base station and said terminal.

8. The method according to claim 1, wherein said terminal detects data transmission conditions by radio measurements, in particular by analysing a radio signal received from said base station.

9. The method according to claim 8, wherein said terminal transmits information on said data transmission conditions to said base station.

10. The method according to claim 8, wherein said step of detecting data transmission conditions and/or transmitting information on said data transmission conditions to said base station is performed periodically.

11. The method according to claim 8, wherein a radio coverage area of said base station is classified into several areas depending on data transmission conditions, in particular depending on the maximum data rate currently possible.

12. The method according to claim 8, wherein said terminal is a mobile terminal.

15. A terminal capable of receiving data from a base station of a radio communications network via a radio link, said terminal having a cache memory and being configured to perform the method according to claim 1, said terminal being configured to receive in advance data to be transmitted from said base station to said terminal depending on current data transmission conditions of said radio link and to store said data received in advance to said cache memory.

16. A base station configured to perform the method according to one claim 1.

13. A terminal capable of receiving data from a base station of a radio communications network via a radio link, wherein a cache memory and characterized in that said mobile terminal is configured to receive in advance data to be transmitted from said base station to said terminal depending on current data transmission conditions of said radio link and to store said data received in advance to said cache memory.

14. The terminal according to claim 13, wherein said terminal is a mobile terminal.