Progress made in specifying the GERAN - Andrew Howell, Chairman (Motorola) Marc Grant, Vice - Chairman (Cingular Wireless)

Progress made in specifying the GERAN Andrew Howell, Chairman (Motorola) Marc Grant, Vice-Chairman (Cingular Wireless) TSG-GERAN Overview (1 of 4) Brought under the 3GPP umbrella in 2000 Formerly known as ETSI SMG2 TSG GSM/EDGE Radio Access Network (TSG-GERAN) is the committee responsible for the radio aspects of the GSM/EDGE technologies Andrew HOWELL, Chairman (Motorola) Marc GRANT, Vice-Chairman (Cingular) Juergen HOFFMAN, Vice-Chairman (Siemens) Guillaume SEBIRE, Vice-Chairman (Nokia) Paolo USAI, Secretary (ETSI MCC) TSG-GERAN Overview (2 of 4) Working Group 1 - Radio specifications Chairman: Jacques ACHARD (Alcatel) Secretary: Paolo USAI (ETSI MCC) RF aspects of GERAN GERAN radio performance and RF system aspects TSG-GERAN Overview (3 of 4) Working Group 2 – Protocol Aspects Chairman: Guillaume SEBIRE (Nokia) Secretary: Gert THOMASON (ETSI MCC) GERAN Radio Layer 2 specification GERAN Radio Layer 3 RR specification A interface specification, Gb interface specification Internal GERAN interface specifications such as Abis TSG-GERAN Overview (4 of 4) Working Group 3 – Terminal Testing Chairman: Ilya GONOROFSKY (Motorola) Secretary: Stoyan BAEV (ETSI MCC) Radio layer and protocol aspect test specifications What is Already ProvidedA story of continued improvement (1 of 3) Release 99 Aspects: Dual Transfer Mode within GSM and GPRS (DTM) General Packet Radio Service enhancements GSM on 400 MHz Frequency Band Enhanced Data rates for GSM Evolution (EDGE) Enhanced GPRS (EGPRS) Enhanced Circuit Switched Data (ECSD) Release 4 aspects: Lower 700 MHz spectrum support What is Already ProvidedA story of continued improvement (2 of 3) Release 5 aspects: GERAN/UTRAN interface evolution 1: Evolution of Iu PS GERAN/UTRAN interface evolution 2: Evolution of Iu CS 8PSK AMR HR GERAN enhancements for streaming services Enhanced Power Control GERAN support for IMS What is Already ProvidedA story of continued improvement (3 of 3) Release 6 aspects: Addition of frequency bands to GSM Seamless support of streaming services in A/Gb mode Flexible Layer One for GERAN Downlink Advanced Receiver Performance (DARP) Uplink TDOA location determination: (for GPRS, PS domain) (for GSM, CS domain) Support of “PS Handover” for GERAN A/Gb mode Generic Access to A/Gb interface (GAN) Multimedia Broadcast/Multicast Service (MBMS) What will be available in the FutureThe story of improvements continues Other Release 7 and beyond aspects: Global Navigation Satellite System (GNSS) DTM Handover VGCS Enhancements PS Conversational Services MBMS Enhancements GERAN Evolution GERAN Evolution (1 of 2) Operators of GSM/GPRS systems need an evolution and interoperability strategy Evolution of the GSM/EDGE radio access technologies offers such a path. This approach helps ensure that systems based on the 3GPP specifications are capable of rapid development and deployment of competitive service offerings while still enabling global roaming and service transparency Current Study Item for GERAN evolution to be concluded in September 2006 GERAN Evolution (2 of 2) Work items approved so far for GERAN Evolution MS receive diversity Dual Carrier for the downlink Currently under study Various uplink enhancement schemes Latency improvements GERAN Evolution – an example (1 of 4)MS Receiver Diversity The aim of MS diversity is to enhance the reception of a given link in the downlink direction, by means of diversity provided by an additional antenna. Thus, receiver diversity is based on reception of the same signal on two antennas in the MS. Therefore no changes are made to the transmissions schemes in the base transceiver station (BTS). GERAN Evolution – an example (2 of 4)MS Receiver Diversity Seen from the Layer 1 in the MS, the introduction of MS Receiver diversity will be a general link level improvement. That is, the signals received by the two antennas are to be combined as one link. Therefore existing algorithms and procedures such as link adaptation, bit error probability estimation and RXQUAL are expected to remain unchanged in the sense that these measures simply reflect improved link quality GERAN Evolution – an example (3 of 4)MS Receiver Diversity Model of the environment surrounding a dual antenna MS. GERAN Evolution – an example (4 of 4)MS Receiver Diversity MSRD is a downlink feature, which improves the receiver performance of the mobile station by means of an additional antenna. The introduction of Single Antenna Interference Cancellation (SAIC) characterised by the Downlink Advanced Receiver Performance (DARP) requirements has already shown that receiver enhancements in the MS can provide significant gains in terms of spectral efficiency. MSRD offers the possibility of enhanced channel diversity and the potential for further improved interference cancellation performance for GMSK modulated signals as well as significant gains for 8PSK-modulated signals. Therefore gains in both user throughput and system capacity can be achieved. Conclusion TSG GERAN works to improve GSM/EDGE based systems, as well as providing a platform for a smooth migration path to other 3GPP based system (e.g. UMTS) Since its beginning, TSG GERAN has worked to improve the efficiency and capabilities of GSM/EDGE based systems with the goal of bringing benefits both to the operator and subscriber TSG GERAN continues to work to provide as many 3G like services as possible to enable operators to have a wide choice of options for network deployment strategies Moving forward TSG GERAN will continue to support the needs of GSM/EDGE operators and will continue to work on introducing new services and improvements as and when desired by the market place. THANK YOU for the opportunity of providing you with information relating to the work of TSG GERAN Companies from China play an important role within TSG GERAN and we look forward to your continued involvement