Nanjing, China C30-20120206-025
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SOURCE:
Jing Sun (jingsun@qualcomm.com) Qualcomm Inc.
ABSTRACT:
This contribution provides the stage 3 text to support using R-EACH with F-PCH in addition to using R-EACH with F-CCCH.
RECOMMENDATION:
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Notice
QUALCOMM Incorporated grants a free, irrevocable license to 3GPP2 and its Organizational Partners to incorporate text or other copyrightable material contained in the contribution and any modifications thereof in the creation of 3GPP2 publications; to copyright and sell in Organizational Partner’s name any Organizational
Partner’s standards publication even though it may include all or portions of this contribution; and at the
Organizational Partner’s sole discretion to permit others to reproduce in whole or in part such contribution or the resulting Organizational Partner’s standards publication. QUALCOMM Incorporated is also willing to grant licenses under such contributor copyrights to third parties on reasonable, non-discriminatory terms and conditions for purpose of practicing an Organizational Partner’s standard which incorporates this contribution.
This document has been prepared by QUALCOMM Incorporated to assist the development of specifications by
3GPP2. It is proposed to the Committee as a basis for discussion and is not to be construed as a binding proposal on QUALCOMM Incorporated. QUALCOMM Incorporated specifically reserves the right to amend or modify the material contained herein and nothing herein shall be construed as conferring or offering licenses or rights with respect to any intellectual property of QUALCOMM Incorporated other than provided in the copyright statement above.

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In the current design of R-EACH, the long code mask contains F-CCCH number. In order to used R-EACH with F-PCH, we need to replace the F-CCCH number by PCN, as is used in R-
ACH. The following changes are needed.
2.1.3.1.17 Quadrature Spreading
The Access Channel and the Reverse Traffic Channel with Radio Configurations 1 and 2 are spread in quadrature as shown in Ошибка! Источник ссылки не найден., Ошибка!
Источник ссылки не найден., and Ошибка! Источник ссылки не найден.. The direct sequence spreading output is modulo-2 added to an in-phase and quadrature-phase sequence. The in-phase and quadrature-phase components of this spreading sequence are specified in Ошибка! Источник ссылки не найден.. These sequences are periodic with a period of 2 15 chips. After quadrature spreading, the Q-channel data shall be delayed by half a PN chip time (406.901 ns) with respect to the I-channel data.
For the Reverse Pilot Channel, the Reverse Secondary Pilot Channel, the Enhanced Access
Channel, the Reverse Common Control Channel, the Reverse Packet Data Control Channel, the Reverse Request Channel, the Reverse Acknowledgment Channel, the Reverse Channel
Quality Indicator Channel, or the Reverse Traffic Channel with Radio Configurations 3 through 7, the I-channel data and Q-channel data shall be multiplied by a complex spreading sequence before baseband filtering as shown in Ошибка! Источник ссылки
не найден. and Ошибка! Источник ссылки не найден..
The in-phase spreading sequence shall be formed by a modulo-2 addition of the I-channel
PN sequence and the I long code sequence. The quadrature-phase spreading sequence shall be formed by the modulo-2 addition of the following three terms: the the modulo-2 addition of the I-channel PN sequence and the I long code sequence, and the decimated-by-2 output of the modulo-2 addition of the Q-channel PN sequence and the Q long code sequence. The decimator shall provide an output that is constant for the two chips corresponding to the two symbols of the decimator output for the symbols into the decimator in that period. The such that the first Walsh chip begins at the first chip of a frame.
The I long code for Spreading Rate 1 shall be the long code sequence specified in Ошибка!
Источник ссылки не найден.. The I long code for Spreading Rate 1 shall have a chip rate of 1.2288 MHz. The Q long code for Spreading Rate 1 shall be the I long code delayed by one chip.
The I long code for Spreading Rate 3 shall consist of three multiplexed component
sequences, each having a chip rate of 1.2288 Mcps, as shown in Figure Ошибка! Текст указанного стиля в документе отсутствует.-1. The first component sequence shall be the I
long code for Spreading Rate 1. The second component sequence shall be the modulo-2 addition of the I long code for Spreading Rate 1 and the I long code for Spreading Rate 1 delayed by 1/1.2288  s. The third component sequence shall be the modulo-2 addition of the I long code for Spreading Rate 1 and the I long code for Spreading Rate 1 delayed by

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2/1.2288  s. The three component sequences shall be multiplexed such that the I long code value at the beginning of every 1/1.2288  s interval, starting from the beginning of the
System Time, corresponds to the first component sequence. The I long code for Spreading
Rate 3 shall have a chip rate of 3.6864 Mcps. The Q long code for Spreading Rate 3 shall be the I long code delayed by one chip.
Long
Code
Mask
Long Code
Generator
(1.2288
Mcps)
1/1.2288  s
Delay
MUX
Long Code
Generator
Output
(3.6864 Mcps)
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1/1.2288  s
Delay
Figure Ошибка! Текст указанного стиля в документе отсутствует.-1. Long Code
Generator for Spreading Rate 3
The mask used for generating the I long code for Spreading Rate 1 (or equivalently, the first component sequence of the I long code for Spreading Rate 3) varies depending on the channel type on which the mobile station is transmitting. See Ошибка! Источник
ссылки не найден..
When transmitting on the Enhanced Access Channel using the common long code, the mask shall be as follows: bits M
41
through M
33
shall be set to ‘110001110’; bits M
32 through M
28
shall be set to the Enhanced Access Channel number; bits M
27
through M
25 shall be set to the Forward Common Control Channel number if the Enhanced Access
Channel is associated with the Forward Common Control Channel number, or bits M
27 through M
25
shall be set to the code channel number for the associated Paging Channel
(PAGECH s
) if the Enhanced Access Channel is associated with the Paging Channel; bits
M
24
through M
9
shall be set to BASE_ID s
for the current base station; and bits M
8
through
M
0
shall be set to the time dependent field, SLOT_OFFSET (see Figure Ошибка! Текст указанного стиля в документе отсутствует.-2).
When transmitting on the Reverse Common Control Channel while in Reservation Access
Mode, the mask shall be as follows: bits M
41
through M
33
shall be set to ‘110001101’; bits
M
32
through M
28
shall be set to the Reverse Common Control Channel number chosen; bits M
27
through M
25
shall be set to the code channel number for the associated Forward
Common Control Channel (the range is 1 through 7); bits M
24
through M
9
shall be set to
BASE_ID s
for the current base station; and bits M
8
through M
0
shall be set to PILOT_PN s
for the current CDMA Channel (see Figure Ошибка! Текст указанного стиля в документе отсутствует.-2).
When transmitting on the Reverse Traffic Channel, the Reverse Acknowledgment Channel, the Reverse Packet Data Control Channel, the Reverse Request Channel, or the Reverse

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Channel Quality Indicator Channel, the mobile station shall use one of the following two long code masks: a public long code mask or a private long code mask.
For the public long code mask, bits M
41
through M
0
shall be specified by PLCM_42 (see
2.3.6 in [5]).
The private long code mask (see Figure Ошибка! Текст указанного стиля в документе отсутствует.-2) shall be as follows: M
41
through M
0
shall be specified by PVTLCM_42 (see
2.3.6 in [5]).
For the Reverse Common Control Channel, the long code mask shall be as follows: bits M
41 through M
33
shall be set to ‘110001101’; bits M
32
through M
28
shall be set to the Reverse
Common Control Channel number chosen; bits M
27
through M
25
shall be set to the code channel number for the associated Forward Common Control Channel (the range is 1 through 7); bits M
24
through M
9
shall be set to BASE_ID s
for the current base station; and bits M
8
through M
0
shall be set to PILOT_PN s
for the current CDMA Channel (see Figure
Ошибка! Текст указанного стиля в документе отсутствует.-2).

41 ... 33 32 ... 28 27 ... 25 24 ... 9 8 ... 0
110001110 EACH_ID FCCCH_ID BASE_ID SLOT_OFFSET
EACH_ID - Enhanced Access Channel Number
FCCCH_ID - Forward Common Control Channel Number
BASE_ID - Base station identification
SLOT_OFFSET - Slot offset associated with the Enhanced Access Channel a) Enhanced Access Channel Long Code Mask
1
41 ... 33 32 ... 28 27 ... 25 24 ... 9 8 ... 0
110001101 RCCCH_ID FCCCH_ID BASE_ID PILOT_PN
RCCCH_ID - Reverse Common Control Channel Number
FCCCH_ID - Forward Common Control Channel Number
BASE_ID - Base station identification
PILOT_PN - Pilot PN sequence offset index for the Forward CDMA Channel b) Reverse Common Control Channel Long Code Mask in the Reservation Access Mode

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41 … 33 32 … 28 27 … 25 24 … 9 8 … 0
110001110 EACH_ID FCCCH_ID BASE_ID SLOT_OFFSET
EACH_ID – Enhanced Access Channel Number
FCCCH_ID – Forward Common Control Channel Number
BASE_ID – Base station identification
SLOT_OFFSET – Slot offset associated with the Enhanced Access Channel a) Enhanced Access Channel Long Code Mode when the Enhanced Access Channel is associated with a Forward Common Control Channel
41 … 33 32 … 28 27 … 25 24 … 9 8 … 0
110001110 EACH_ID PCN BASE_ID SLOT_OFFSET
EACH_ID – Enhanced Access Channel Number
PCN – Paging Channel Number
BASE_ID – Base station identification
SLOT_OFFSET – Slot offset associated with the Enhanced Access Channel b) Enhanced Access Channel Long Code Mode when the Enhanced Access Channel is associated with a Paging Channel
41 … 33 32 … 28 27 … 25 24 … 9 8 … 0
110001101 RCCCH_ID FCCCH_ID BASE_ID PILOT_PN
RCCCH_ID – Reverse Common Control Channel Number
FCCCH_ID – Forward Common Control Channel Number
BASE_ID – Base station identification
PILOT_PN – Pilot PN sequence offset index for the Forward CDMA Channel c) Reverse Common Control Channel Long Code Mask in the Reservation Access Mode
Figure Ошибка! Текст указанного стиля в документе отсутствует.-2. Long Code Mask
Format for Quadrature Spreading of the Enhanced Access Channel and the Reverse
Common Control Channel
The I and Q PN sequences used for quadrature spreading shall be as specified in Ошибка!
Источник ссылки не найден. and Ошибка! Источник ссылки не найден.. These sequences are periodic with a period of 2 15 chips for Spreading Rate 1 and with a period of
3  2 15 chips for Spreading Rate 3.