Tech-invite  3GPPspecsRELsGlossariesSIP
21222324252627282931323334353637384‑5x

Top   in Index   Prev   Next

TS 43.055RAN6
Dual Transfer Mode (DTM) – Stage 2

use "3GPP‑Page" to get the Word version
use "ETSI‑search" to get the PDF version
for a better overview, the Table of Contents (ToC) is reproduced
V15.0.0 (PDF)  2018/06  51 p.
V14.0.0  2017/03  53 p.
V13.0.0  2015/12  52 p.
V12.0.0  2014/09  51 p.
V11.1.0  2013/03  51 p.
V10.0.0  2011/04  51 p.
V9.0.0  2009/12  51 p.
V8.1.0  2009/03  51 p.
V7.6.0  2007/09  51 p.
V6.15.0  2007/03  38 p.
V5.5.0  2005/02  35 p.
V4.6.0  2005/02  35 p.
GSM Rel-99 v8.4.0  2005/01  34 p.

Rapporteur:  Mr. Hofmann, Juergen

The definition of GPRS class A mode of operation in Release 97 assumes a total independence between the CS and PS domains. Thus the direct implementation of the existent standards for class A would result in mobile stations that are required to operate in two different frequencies either in the same timeslot, in timeslots n and n + 3 or their adjacent ones. This complicates enormously the internal architecture of the ME, resulting in a very high development cost, which both operators and manufacturers would prefer to avoid.
Nevertheless, operators have expressed their need for this type of mobiles, since they want to offer services that demand the simultaneous existence of a CS connection and a PS session. This is particularly important during the coexistence of GSM/GPRS with UMTS, as these capabilities will exist in UMTS. However, UMTS coverage may not be available in some areas where there is GSM/GPRS coverage (e.g. deep inside buildings or when roaming to a 2G network). As coverage is a vital service, in order for an operator to be able to sell "UMTS class A services" it is necessary to be able to imitate class A services in areas of only GSM coverage. On the other hand, the provision of class A services with GERAN technology is also essential for operators without UMTS coverage.
This TS is a description of the practical implementation of GSM-GPRS class A mobiles and a basis for discussion on the changes and additions to the current specifications.

full Table of Contents for  TS 43.055  Word version:   15.0.0

Here   Top

 

1  ScopeWord-p. 7
2  References
3  Definitions and abbreviationsWord-p. 8
4  Class A capabilitiesWord-p. 9
5  Layer 1
6  Signalling procedures
6.1  Establishment
6.2  Release
6.3  HandoverWord-p. 23
6.4  Location managementWord-p. 37
6.5  Provision of the IMSI to the BSCWord-p. 42
6.6  In-band parametersUp
6.7  MS behaviour in heterogeneous networksWord-p. 44
7  DTM operationWord-p. 46
8  GPRS attach procedure while in dedicated mode and packet idle mode
9  Security
10  Header and Data Compression
A  Possible improvements for future releasesWord-p. 47
B (Normative)  Incremental support of extended DTM multislot classesWord-p. 48
C  Change historyWord-p. 49

Up   Top