17.5 New multicarrier bts class (mcbts) uid_51147

Resources: G1

References

Document	Title/Contents
WID(s)
GP-071542	WID on New multicarrier BTS class
Impacted Specifications
TS 45.005	Radio transmission and reception
TS 45.050	Background for RF Requirements
TS 51.021	Base Station System (BSS) equipment specification; Radio aspects

Supporting Individual Members: Alcatel-Lucent, China Mobile, Ericsson, Huawei, TeliaSonera, T-Mobile, Vodafone, ZTE.

Multicarrier transceiver architectures applied to GSM BTSs would allow several (possibly hopping) GSM carriers to be processed by a single transmitter and power amplifier in the downlink and by a single wideband receiver in the uplink. This sharing of hardware resources by several carriers leads to significant cost reductions for the BTS equipment.

Given the recent advances in components technology, these architectures seem more and more feasible, however feasibility is still conditioned by the relaxation of some of the most severe requirements in TS 45.005. The relaxation of those requirements must be considered with great care, as it might have impacts on operational scenarios, mainly in the case of uncoordinated operation of networks between two (or more) operators. There are ongoing discussion in TSG GERAN on pros and cons of this relaxation in TS 45.005 and TS 51.021. The proposed way addressing the remaining concerns is to specify a new class of BTS with relaxed radio requirements. Regulatory restrictions apply to the usage of BTSs of this class at the border of the frequencies allocated to an operator. These restrictions could be based on the geographical area where such BTSs are operating.

This work defines a new BTS class based on relaxed radio requirements to allow multicarrier operations while ensuring that such relaxations cannot impact the performance of existing neighbouring networks. It investigated applicability of multicarrier GERAN BTS and identified the extent of required BTS radio modifications for selected deployment scenarios. Furthermore radio performance requirements for such BTS had been investigated for optimizing system integrity in high capacity deployment scenarios including:

• Extent of and need for possible modifications for TX inter-modulation performance at the BTS;

• Extent of and need for possible modifications for RX blocking performance at the BTS;

• Required modifications related to spurious emissions and switching transients at the BTS;

• Treatment of impacts to neighbour GERAN-based networks with prime consideration of 900MHz, 1800MHz bands

Availability of new technology based Multi-Carrier Power Amplifiers (MCPA) and wideband receiver architectures was included in the investigation.

17.6 Support for Additional Navigation Satellite Systems (anss) for lcs uid_38001

Resources: S1,G2,R2

References

Document	Title/Contents
WID(s)
GP-080776	WID on Support for Additional Navigation Satellite Systems (ANSS) for LCS
Impacted Specifications
TS 22.071	Location Services (LCS); Service description; Stage 1 (SA1 CR0077)
TS 43.059	Functional stage 2 description of Location Services (LCS) in GERAN
TS 44.031	Location Services (LCS); Mobile Station (MS) - Serving Mobile Location Centre (SMLC) Radio Resource LCS Protocol (RRLP)
TS 44.071	Location Services (LCS); Mobile radio interface layer 3 LCS specification
TS 48.031	Location Services LCS: Serving Mobile Location Centre - Serving Mobile Location Centre (SMLC - SMLC); SMLCPP specification
TS 49.031	Location Services (LCS); Base Station System Application Part LCS Extension (BSSAP-LE)
TS 51.010	Mobile Station (MS) conformance specification
RAN2 TS	25.305, 25.306, 25.331, 25.413, 25.423, 25.433, 25.453 (RAN2 considers performance requirements for Rel-9)
New Dedicated Specifications/Reports
-	-

Supporting Individual Members: Qualcomm, AT&T, Ericsson, Spirent, TeleCommunications Systems.

Galileo and Additional Navigation Satellite Systems (GANSS) support was added by Rel-7 work item A-GNSS-GP. Rel-7 GANSS supports only the Galileo navigation satellite system, but allows adding new satellite systems by assigning new GANSS IDs, GANSS Signal IDs and GANSS Time IDs, together with a few ASN.1 extensions to existing assistance data elements. These ANSS multiply the number of satellites and signals available for free open service positioning, and therefore, will increase the service availability, user experience and accuracy of LCS. In particular, accuracy, yield and time to first fix will be improved in indoor and dense urban areas, where navigation satellite signals normally exhibit blocking, attenuation and multipath effects. Higher accuracy is achieved in rural and suburban areas, where high yield and good accuracy are normally possible.

Signal In Space Interface Control Documents (SIS ICD) of the these satellite navigation systems are all freely available:

• Modernized GPS: IS-GPS-200, IS-GPS-705, IS-GPS-800 http://www.losangeles.af.mil/library/factsheets/factsheet.asp?id=9364

• SBAS http://www.faa.gov/about/office_org/headquarters_offices/ato/service_units/techops/navservices/gnss/library/documents/

• QZSS http://qzss.jaxa.jp/is-qzss/IS-QZSS_10_E.pdf

• GLONASS http://www.glonass-ianc.rsa.ru/i/glonass/ICD02_e.pdf

This work adds support for ANSS by defining new GANSS IDs for the following navigation satellite systems:

• Modernized GPS;

• SBAS (Satellite Based Augmentation Systems; limited to EGNOS, WAAS, GAGAN, MSAS);

• QZSS (Quasi Zenith Satellite System);

• GLONASS.

Extensions to existing GANSS assistance data elements, where required, shall allow to natively support these ANSS (and their hybrid use) using GERAN signalling.