Last updated: September 16, 2009
The 1xEV-DO air-interface standard (3GPP2 C.S0024) has evolved from release 0 (1xEV-DO) to release A (1xEV-DO-A) and afterwards release B(1xEV-DO-B). The latter release offers more functionality and improved data rates on both the forward and reverse channels with the new subtypes (protocol release A with subtype 2 and protocol release B with subtype 3), see Release A Physical Layer Subtype or Release B Physical Layer Subtype for details.
Protocol
Rel
sets the protocol release (3GPP2 C.S0024 standard) that
the test set is emulating. While in the Active Cell operating mode,
the Protocol Rel
was sent to the
AT in the Sync Message (as defined by the
C.S0024, the value 0x01 is sent for release 0, release A and release
B) on the control channel at a rate of 1.28 second period.
NOTICE
THE DELIVERY OF THE KEYSIGHT PRODUCT DOES NOT CONVEY A LICENSE
NOR IMPLY ANY RIGHTS TO USE THE "1xEV-DO REVISION A"
CAPABILITY CONTAINED IN THE KEYSIGHT PRODUCT. SUCH USE REQUIRES
THE EXPRESS CONSENT OF OR A SEPARATE LICENSE FROM QUALCOMM
INCORPORATED. CUSTOMERS AND PRODUCT USERS SHALL BE SOLELY
RESPONSIBLE TO OBTAIN SUCH CONSENT OR LICENSE FROM QUALCOMM
INCORPORATED IN CONJUNCTION WITH THE USE OF THE "1XEVDO
REVISION A" CAPABILITY.
1xEV-DO Release A uses 1.2288 Mcps as the spread rate and has the backwards compatibility with 1xEV-DO Release 0.
Release A supports three physical channel modes: Subtype 0 physical layer is the same as the original air interface in Release 0. Subtype 1 physical layer is very similar to subtype 0, but with support for variable rate R-Access Channel operation. Subtype 2 physical layer supports a new, high rate R-Traffic Channel along with increased data rates and support for smaller packets on the F-Traffic Channel (see Release A Physical Layer Subtype ). Besides, Release A has a number of new applications:
1xEV-DO Release B uses 1.2288 Mcps as the spread rate and has the backwards compatibility with Release 0 and Release A. To obtain increased data throughput, Release B can optionally support multiple combined RF channels. The following new protocols are added to support multi-carrier operation: Multi-carrier Forward Traffic Channel MAC Protocol, Multi-carrier Reverse Traffic Channel MAC Protocol and Subtype 3 Physical Layer Protocol (see Release B Physical Layer Subtype ).
The new Subtype 3 Physical Layer Protocol supports multiple carriers in the forward and reverse links to increase data throughput. Moreover, with 64-QAM modulation, Subtype 3 Physical Layer Protocol supports new optional forward link rates up to 4.915 Mbps which makes the theoretical peak data throughput for three Forward/Reverse channels to be 3 x 4.915 Mbps = 14.745 Mbps in the forward Link and 3 x 1.8432 Mbps = 5.5296 Mbps in the reverse link.
Release B supports three multi-carrier multiplexing modes: No Feedback Multiplexing mode, Basic Feedback Multiplexing mode and the Enhanced Feedback Multiplexing mode. The test set only supports for the No Feedback Multiplexing mode in which each pair of forward/reverse channels operates as a stand alone pair. In the No Feedback Multiplexing mode, the feedback channels (R-DRC, R-ACK and R-DSC) for each forward channel are transmitted on a paired reverse channel using the same user long code sequences just as in Release A. See Multi-carrier Multi-unit (MCMU) for the Release B solution supported by the test set.
Default
Packet Application
when Protocol
Rel is A (1xEV-DO-A)
and Release A Physical Layer Subtype
is Subtype 2
.GPIB Command: CALL[:CELL]:PROTocol[:SELected]
Manual Operation: How Do I Change Call Parameters?
Release A Physical Layer Subtype