Chapter 3 Protocol Interface Description
l
The data link layer comprises of Medium Access Control (
) sublayer and
Link Access Control (LAC) sublayer. The MAC sublayer implements the mapping
between logical channels and physical channels and delivers the Radio Link Protocol
) function.
The LAC sublayer performs authentication, automatic request
retransmission, addressing, segment and reassembly.
l
The uppermost layer provides signaling service, voice service, packet data application
and circuit data application, and implements radio resource, mobility and connection
management of the air interface through signaling service.
CDMA2000 1x EV-DO Um interface
The CDMA2000 1x EV-DO Um interface is divided into application layer, stream layer,
session layer, connection layer, security layer and physical layer. The Um interface meets
the IS-856 protocol standard. Every layer defines one or more protocols to realize its
function.
illustrates the overall protocol reference model.
Figure 3-3 1xEV-DO Um Interface Protocol Reference Model
l
Application layer
The application layer provides multiple applications, such as Default Signaling
Application for transmitting air interface messages and Default Packet Application for
transmitting data. The Default Signaling Application defines two protocols, Signaling
Network Protocol (SNP) and Signaling Link Protocol (SLP). The protocols on all
layers exchange messages through SNP . SLP implements message segment
and assembly, Best-effort transmission, reliable transmission and duplicate packet
detection.
3-3
SJ-20100722143906-001|08/30/2010
ZTE Proprietary and Confidential
Summary of Contents for ZXSDR R8860
Page 4: ...II ...
Page 6: ...II ...
Page 8: ...II ...
