Tuesday, July 28, 2009
Whitepaper provides a overview of global spectrum allocations for 3GPP based technologies and illustrates some of the key challenges for optimal spectrum utilization when allocations differ either on a country- or region-specific basis.
While covering widely held tenets considered fundamental for sound spectrum policy it discusses current approaches to addressing fragmented spectrum challenges.
In concluding remarks 3G Americas states that that there is a significant impact of fragmented spectrum allocations on the cost and performance of mobile devices. These impacts hold true in virtually every corner of the globe.
Regulators have an important and challenging role in obtaining addition spectrum and bringing it to market to meet the demands of consumers.
3G Americas offered regulators to consider following while working on obtaining addition spectrum:
1. Spectrum should be harmonized and coordinated to the maximum extent feasible;
2. New spectrum should facilitate access by new technologies of all stripes;
3. At the same time, appropriate protections should be established for incumbent and/or adjacent service providers to protect against interference;
4. Spectrum policy should foster as far as possible the efficient use of spectrum; and
5. The rules covering the allocation, auction and deployment of spectrum should be predictable and transparent, prior to auctions.
For further reading download whitepaper.
Thursday, July 23, 2009
Saturday, July 18, 2009
The following are some of the principles of 3GPP E-UTRAN security based on 3GPP Release 8 specifications:
- The keys used for NAS and AS protection shall be dependent on the algorithm with which they are used.
- The eNB keys are cryptographically separated from the
EPCkeys used for NAS protection (making it impossible to use the eNB key to figure out an EPCkey).
- The AS (
RRCand UP) and NAS keys are derived in the EPC/UE from key material that was generated by a NAS ( EPC/UE) level AKA procedure (KASME) and identified with a key identifier (KSIASME).
- The eNB key (KeNB) is sent from the
EPCto the eNB when the UE is entering ECM-CONNECTED state (i.e. during RRCconnection or S1 context setup).
- Separate AS and NAS level security mode command procedures are used.
- Keys stored inside eNBs shall never leave a secure environment within the eNB (except when done in accordance with this or other 3GPP specifications), and user plane data ciphering/deciphering shall take place inside the secure environment where the related keys are stored.
- Key material for the eNB keys is sent between the eNBs during ECM-CONNECTED intra-E-UTRAN mobility.
The HE sends an authentication response back to the
From KASME, the NAS keys, (and indirectly) KeNB keys and NH are derived. The KASME is never transported to an entity outside of the
From the KeNB, the eNB and UE can derive the UP and
Tuesday, July 14, 2009
- Network Selection for non-3GPP Access
- Registration in Densely-populated area
- Enhanced Home NodeB / eNodeB continuation of Rel-9
- IMS aspects of Architecture for Home NodeB - moved from Rel-9
- IMS Service Continuity – Inter Device Transfer enhancements (EHNB)
- GTP-based S8 chaining - moved from Rel-9
- Multi Access PDN Connectivity - moved from Rel-9
- EEA3 and EIA3 (new Encryption & Integrity EPS security algorithms)
- Study on Mobile Haptic Services
- Study on advanced requirements for IP interconnect - moved from Rel-9
- Study on Unauthenticated PS Emergency Calls - moved from Rel-9
- Study on Study on Personal Broadcast Service - moved from Rel-9
- Study on LCS support in SAE for non-3GPP accesses - moved from Rel-9
- Study on System enhancements for the use of IMS services in local breakout and optimal routing of media - moved from Rel-9
- Study on Intra Domain Connection of RAN Nodes to Multiple CN Nodes - moved from Rel-9
- Study on IMS Evolution - moved from Rel-9
- Study on enhancements to IMS border functions for IMS Interconnection of services - moved from Rel-9
- Study on Policy solutions and enhancements
- Study on IPv6 Migration
- Study on SR-VCC Enhancements
Tuesday, July 7, 2009
Once operator start migrating towards LTE then what will be the shape of VAS? It would be interesting to see how current VAS infrastructure will be reused. VoLGA seems to be a bridging the gap during migration but what would be final implementation?
read more at LteWorld
According VoLGA stage 1 specification, The aim of VoLGA is to make traditional GSM/UMTS circuit switched (CS) services available to UEs accessing the EPS network via E-UTRAN.
The lack of native SMS over LTE support is a show-stopper for LTE dongle service. Mobile operators rely on SMS for back office customer care, provisioning and management of HSPA-dongle services. Clearly those systems need to be available to an LTE-based terminal service at launch.
read more at LteWorld
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