WO1996022665B1 - Dynamic allocation of radio capacity in a tdma system - Google Patents

Dynamic allocation of radio capacity in a tdma system

Info

Publication number
WO1996022665B1
WO1996022665B1 PCT/FI1996/000017 FI9600017W WO9622665B1 WO 1996022665 B1 WO1996022665 B1 WO 1996022665B1 FI 9600017 W FI9600017 W FI 9600017W WO 9622665 B1 WO9622665 B1 WO 9622665B1
Authority
WO
WIPO (PCT)
Prior art keywords
service
packet radio
time slots
predetermined
circuit switched
Prior art date
Application number
PCT/FI1996/000017
Other languages
French (fr)
Other versions
WO1996022665A1 (en
Filing date
Publication date
Priority claimed from FI950097A external-priority patent/FI114178B/en
Application filed filed Critical
Priority to AU43927/96A priority Critical patent/AU692036B2/en
Priority to JP52206396A priority patent/JP3155010B2/en
Publication of WO1996022665A1 publication Critical patent/WO1996022665A1/en
Publication of WO1996022665B1 publication Critical patent/WO1996022665B1/en

Links

Abstract

The invention relates to a method aiming at dynamic division of the radio capacity in a TDMA system dynamically between packet radio service and circuit switched service. According to the invention, some basic number of time slots are reserved for packet radio service and the rest are reserved for circuit switched service. When the traffic requirement of packet radio service increases, information regarding this is obtained by means of a request from a mobile station or through traffic measurement at the base transceiver station. This information is used as a criterion in allocating more time slots to packet radio service.

Claims

AMENDED CLAIMS[received by the International Bureau on 9 August 1996 (09.08.96); original claims 1-12 replaced by amended claims 1-11 (3 pages)]
1. A method for dynamic division of radio capacity between packet radio service and circuit switched service in a TDMA system in which two-way traffic between base transceiver stations and mobile stations takes place in time slots on predetermined channels, characterized in that
- in the basic mode the base transceiver station allocates a first predetermined number of time slots for packet radio service and a second predetermined number of slots for circuit-switched service, and that - at the occurrence of a predetermined initiation, the base transceiver station allocates one or more additional free time slot/slots to packet radio service and/or circuit switched service, said initiation being one of the following: a new packet radio connection is set up, an existing packet radio connection is terminated, a new packet radio session is set up, an existing packet radio session is terminated, a handover concerning a certain mobile station is performed, or a certain threshold value is reached in a traffic measurement performed at the base transceiver station.
2. A method according to Claim 1, characterized in that the said first number of time slots comprises all data transmission time slots of a channel when circuit switched service does not require capacity, no time slot being reserved for circuit switched service, but one or multiple free time slot/slots is/are allocated to circuit switched service when a predetermined initiation occurs.
3. A method according to Claim 1, characterized in that the said first number of time slots comprises a predetermined minimum number of time slots, in which case, at the occurrence of said initiation, one free time slot is first allocated to packet radio service and during the assignment of the subsequent packet the necessary number of additional time slots are allocated.
4. A method according to Claim 3, characterized in that the said minimum number is adjustable, in which case the number is adjusted on the basis of traffic and/or factors of traffic economy.
5. A method according to Claim 1, characterized in that the said pre- determined first number of time slots is 0 (zero), in which case a mobile station, in order to have access to packet radio service capacity, makes a request for it to the base transceiver station.
6. A method according to Claim 1, wherein said occurrence of a predetermined initiation specifically means that a certain threshold value is reached in a traffic measurement performed at the base transceiver station, characterized in that when the traffic of the service concerned increases to above a predetermined first threshold value, one or more additional time slot/slots is/are allocated to this service and, when the traffic of the service concerned drops to below a predetermined second threshold, a corresponding number of time slots are deallocated from this service.
7. A method according to Claim 6, characterized in that the service concerned is packet radio service and that additional time slots are allocated, when necessary, from multiple channels.
8. A method according to Claim 7 or 8, characterized in that the determination of at least one of the first and second threshold values is based on long-term measurement of the behavior of the traffic and/or that at least one of the threshold values is adjusted on the basis of the traffic measurement result over a specified time period.
9. A method according to any of the above claims, characterized in that the method is applied in parallel also to FDMA bands, whereby the FDMA bands are treated like said time slots.
10. A time division multiple access (TDMA) mobile telecommunication system which comprises a base station system (BSS) comprising base transceiver stations and base station controllers, as well as mobile stations, and which mobile telecommunication system is equipped to handle two-way traffic between base transceiver stations and mobile stations in time slots on pre-determined channels and which mobile telecommunication system is equipped to offer packet radio service and circuit switched service, characterized in that, for dynamic division of radio capacity between packet radio service and circuit switched service,
- the basic mode of a base station system (BSS) comprises the reservation of a predetermined first number of time slots for packet radio service and a predetermined second number of time slots for circuit switched service, - the base station system comprises means for monitoring the capacity required for each service, and
- the operation of a base station system (BSS) comprises a dynamic division phase in which, at the occurrence of a predetermined intiation, the base transceiver station allocates one or more additional free time slot/slots to packet radio service and/or circuit switched service, said initiation being one of the following: a new packet radio connection is set up, an existing packet radio connection is terminated, a new packet radio session is set up, an existing packet radio session is terminated, a handover concerning a certain mobile station is performed, or a certain threshold value is reached in a traffic measurement performed at the base transceiver station.
11. A mobile telecommunication system according to Claim 10, characterized in that the base station system is equipped to transmit to a mobile station information regarding the division of radio capacity between packet radio service and circuit switched service.
PCT/FI1996/000017 1995-01-09 1996-01-08 Dynamic allocation of radio capacity in a tdma system WO1996022665A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU43927/96A AU692036B2 (en) 1995-01-09 1996-01-08 Dynamic allocation of radio capacity in a TDMA system
JP52206396A JP3155010B2 (en) 1995-01-09 1996-01-08 Dynamic allocation method of radio capacity in TDMA system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI950097A FI114178B (en) 1995-01-09 1995-01-09 Dynamic allocation of radio capacity in a TDMA system
FI950097 1995-01-09

Publications (2)

Publication Number Publication Date
WO1996022665A1 WO1996022665A1 (en) 1996-07-25
WO1996022665B1 true WO1996022665B1 (en) 1996-09-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI1996/000017 WO1996022665A1 (en) 1995-01-09 1996-01-08 Dynamic allocation of radio capacity in a tdma system

Country Status (15)

Country Link
US (1) US5729534A (en)
JP (1) JP3155010B2 (en)
KR (1) KR100433616B1 (en)
CN (1) CN1099209C (en)
AT (1) AT410049B (en)
AU (1) AU692036B2 (en)
DE (1) DE19543845A1 (en)
FI (1) FI114178B (en)
FR (1) FR2729269B1 (en)
GB (1) GB2296844B (en)
IT (1) IT1281596B1 (en)
NL (1) NL1002023C2 (en)
RU (1) RU2153240C2 (en)
SE (1) SE519392C2 (en)
WO (1) WO1996022665A1 (en)

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