<"always on" capabilities of 1X (and beyond) vs. GPRS (and W-CDMA)>
I was hoping you were wanting some info that great American auto, the "Pinto". Information on GPRS seems rather scarce at the time and many features may be "TBD" as they say in the trade. The GPRS phones seem to be as common as eyebrows on eggs, so manuals for them are not available at this time to just anyone.
However, the manual for the Motorola Acompli 002 (ihdt6af1 = Acompli 002, if you wish to look it up on the FCC site, the Acompli 008 is a GPRS phone but not yet approved by the FCC) states that features are determined by your service provider. Snips from that manual and from a preliminary CDMA2000 spec and the final spec follow. Seems that phase 2 is also "TBD" unless a newer spec is out.
(Motorola GPRS Handsets
Motorola is the only vendor who can commercially deliver handsets and end-to-end solutions today. Motorola is introducing a complete portfolio of exciting GPRS phones, for all consumer segments and all price tiers. These will be Motorola's second generation of GPRS handsets - offering improved functionality and ease of use.
Tri-band Timeport™ 260: allows users to switch between data mode and voice calls, while TrueSync™* software allows the synchronisation of data between phone, PC, PDA and other devices.
Accompli™ 008 all-in-one phone: large touch screen allows for easy use; handwriting recognition offers users the chance to communicate easily in English, Spanish, French, German, Italian, Swedish, Portuguese and even Chinese.
Motorola V66™: The smallest triband phone with GPRS technology, contained within Motorola's iconic clam shell design.
Motorola V120™: provides all of the advanced text messaging features, including animated icons, group messaging and canned messages.
The Talkabout™ 192: extremely user friendly with animated screen savers, icons and iTAP™ predictive texting. )
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From Motorola GSM Phone Manual
snip
_ Access Internet is a network and subscription-dependent feature. Contact your service provider for details about the mobile internet services based on the WAP (Wireless application Protocol) technology that they provide.
Your phone has mobile internet access. This allows you to use the mobile internet services available from your service provider, for example, financial, sport, travel and entertainment information services.
This section explains:
- some of the common display features
- how to set up your phone for mobile internet access
- how to start a mobile internet session
- how to use and end the mobile internet session.
Common Display Features
Your service provider determines the layout and information that appears on the display. This example display illustrates a typical mobile internet screen and the soft keys you use to select and navigate through options.
snip
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cdma2000 System Description
Page 117 V0.12 / 27-Jul-98
snip
3.3.1.2 Data Services 35
Two types of data services are being considered - packet and high speed circuit data services. Section 0 defines the MAC service model for packet data services, whereas Section 0 defines the service model for circuit data services. Section 0 defines the states for the PLICF for Data Services.
3.3.1.2.1 Packet Services
The packet service and the MAC layer are designed to support a large number of mobile stations using packet data services. Many of the packet data services exhibit highly bursty traffic patterns with relatively long periods of inactivity. Due to limited air-interface capacity, limited base station equipment, and constraints on mobile station power consumption, dedicated channels for packet service users are allocated on demand and released shortly after the end of the activity period.
However, releasing the dedicated channels and re-establishing them introduces latency and signaling overhead due to the re-negotiation process that has to take place between the base station and the mobile station prior to user data exchange. In particular, the overhead of re-establishing the dedicated channels includes the cost of synchronization of RLP and signaling overhead associated with service negotiation to re-connect the packet service. The cdma2000 MAC avoids this latency and overhead by permitting the mobile station and the base station to save a set of state information after the initialization phase is completed.
To further reduce the overhead associated with assignment of dedicated channels, the packet service allows for the exchange of short bursts of user data when no dedicated channels are present (see Dormant/Burst Substate description below). For example, this mode of operation may be suitable for Mobile-IP registration, notification services (e.g., email notifications), and location tracking services where typically the volume of data to be exchanged is small.
3.3.1.2.2 Circuit Services
Circuit services can be viewed as a special case of the packet services in the sense that dedicated traffic and control channels are typically assigned to the mobile station for extended periods of time during circuit service sessions. This will lead to a less efficient use of the air-interface capacity. However, some delay sensitive services such as video applications require a dedicated channel for the duration of the call.
Snip
CDMA2000
TIA/EIA/IS-2000-3
Page 10
1.7 Overview
Section 1 contains an overview of this standard. Section 2 defines the normative behavior of the IS-2000 MAC sublayer by describing the precise processing rules for each of the MAC sublayer entities. Section 2 also describes the overall structure of the IS-2000 MAC sublayer, defines the entity and service model that is used within this standard, and specifies the entities that comprise the MAC sublayer. Section 3 describes the services interfaces between the MAC sublayer and other entities that are defined outside of this standards document (i.e., Upper Layer Signaling and the Physical Layer). Finally, Section 4 contains a set of informative flow diagrams.
1.7.1 Overview and Definition of MAC Components As shown in Figure 1,IS-95 has a layered structure providing voice, packet data (up to 64 Kbps), simple circuit data (e.g., async Fax), and simultaneous voice and packet data services. At the most basic level, cdma2000 provides protocols and services that correspond to the bottom two layers of the ISO/OSI Reference Model (i.e., Layer 1 - the Physical Layer, and Layer 2 - the Link Layer) according to the general structure specified by the ITU for IMT-2000 systems. Layer 2 is further subdivided into the Link Access Control (LAC) sublayer and the Medium Access Control (MAC) sublayer.
Applications and upper layer protocols corresponding to OSI Layers 3 through 7 utilize the services provided by the cdma2000 LAC services. Examples include Signaling Services, Voice Services, Packet Data Applications, and Circuit Data Applications
Motivated by higher bandwidths and the need to handle a wider variety of services, several enhancements have been incorporated into cdma2000 (these have been highlighted in Figure 1). In cdma2000, a generalized multi-media service model is supported. This allows any combination of voice, packet data, and high-speed circuit data services to be operating concurrently (within the limitations of the air interface system capacity). cdma2000 also includes a Quality of Service (QoS) control mechanism to balance the varying QoS requirements of multiple concurrent services (for example, to provide B-ISDN or RSVP QoS capabilities). cdma2000 includes a flexible and efficient MAC entity that supports multiple data service state machine instances, one for each active packet or circuit data service instance. Along with the QoS Control entity, the MAC realizes the complex multi-media, multi-service capabilities of next generation wireless systems with QoS management capabilities for each active service.
cdma2000 also introduces a Link Access Control (LAC) protocol entity to support point- to-point transmission over the air for signaling services and (optionally) for circuit data services. To provide a high degree of flexibility in the evolution of Voice Services, cdma2000 provides the framework and services to transport encoded voice data in the form of packet data or circuit data traffic, as well as in a manner that is backward compatible with previous IS-95 standards (i.e., the encoded voice data is transported directly by the Physical Layer). In the latter example, the LAC and MAC services are considered to be null.
The implementation of the cdma2000 capabilities in TIA standards has been divided into two phases:
In this section, the term "IS-95" denotes any of the standards that are predecessors to cdma2000, i.e., IS-95, IS-95-A, and TIA/EIA-95-B.
.Phase 1 - support for one voice or packet data service instance with data rates up to 144 Kbps, and
.Phase 2 - support for the full cdma2000 capability set (including multiple concurrent high-speed circuit and packet data services with data rates up to 2 Mbps and QoS control capabilities).
The IS-2000 standard provides support for cdma2000 Phase 1; however, the Medium Access Control (MAC) portion of the IS-2000 standard (IS-2000-3) incorporates some capabilities for cdma2000 Phase 2 (most notably support for multiple concurrent packet and circuit data service instances). IS-2000-3 also incorporates a modular, layered architecture utilizing entities and service interfaces that will serve as the foundation for the cdma2000 Phase 2 implementation in future TIA standards. |
