SoC 白盒IP设计

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May 23 - 24 Shenzhen

GSM GPRS EDGE Protocol Stack SW IP



A GSM/GPRS/EDGE SW Protocol Stack IP that has been integrated with multiple basebands and shiped in 1bn phones and M2M modules world wide. Extensively field trialed, extremely modular, and independent of undelying hardware.

GSM/EGPRS handset stack has been designed to optimise:

  • Performance, incl high data rates, and low latency
  • Footprint: lowest memory use consistent with performance
  • Flexibility: rapid implementation with port to alternate base-band, RF chipsets and RTOS without main code changes; source code option
  • Debug, validation and field trials process: comprehensive graphical tools

All code is written in ANSI C and has been ported to 7 chipsets to date.

Sub-layers are mostly implemented as individual tasks (save for, e.g. RLC/MAC) communicatingthrough message queues. A description of the standard L1C, L2 & L3 stack is provided.


  • Class B implementation multi-slot class 12 to 3GPP Release 1999 June 2007
  • GPRS PDP context. Packet services accessed via integrated TCP/ IP stack, or via PPP using an external PC or PDA.
  • Conforms to 3GPP Release ’99 / GCF-CC v3.35 bis (GCF-CC Version 3.35.0 dated 2009-07-06) and NAPRD.03 v5.0 bis (PTCRB NAPRD.03 v5.0) based on STAR-Let200Q M2M platform
  • Data rates to 80Kbps (GPRS); 400Kbps (EGPRS)
  • Quad-band support
  • PBCCH support
  • AT Command Interpreter implements 27.007 commands for GSM and GPRS; extended command set
  • SIM Interface supports Phase 1 & 2 cards
  • Layer 1
  • Type 1, multi-slot class 12
  • Simple primitive interface
  • Generic core design
  • Easily portable
  • Optimal power-saving
  • Internet Protocol (TCP/IP) provided by third party (Mentor Graphics)
  • Sub-Network Dependent Convergence Protocol (SNDCP)
  • Interfaces to AT command interpreter
  • Interfaces with IP directly or via PPP
  • Compression of TCP/IP headers (option)
  • GSM Short Message Service (SMS) GPRS Short Message Service (GSMS)
  • MO and MT messages sent / received over GPRS packet link
  • Circuit-Switched Data Option
  • Transparent & non-transparent up to 9.6 Kbits/sec (14.4 Kbps option)
  • Group 3 Fax Class 1
  • Portable to alternate RTOS through abstraction layer (GHDI, GSDI)
  • Deliverables

  • License protocol stack in image, object and source-code form to chipset providers, system integrators
  • Consultancy: strategy, customisation, porting, integration, product design, product co-design, and verification to licensees and others
  • Services: maintenance, support for test & validation, including field trials, conformance testing
  • Provision of terminal reference designs and modem modules through partnerships

T2M提供高质量的已验证IP,包括各种模拟/混合信号,RF,数字和SW系统的解决方案。可用于通信,消费类电子和计算机产品的关键组成部分,包括IoT系统,可穿戴设备,蜂窝电话,平板电脑,M2M,RCU,机顶盒,电视机,DVD播放器和PC芯片组。 无论是fab工厂的工艺 /节点的移植还是特定的系统功能,T2M所提供的IP可以进行设计定制化修改以适合客户的具体要求。