At the last phone-in, I picked up the task of trying to
find a clearer way to display the parameter tables.
Here is a sample of the material laid out using different
XML methods.
We should discuss at today's meeting
If anyone has any alternative methods that they think
I should try - let me know and I will try them out.
Stewart
3.1.1. Cellular Backaul Requirements
3.1.1.1. Just using paragraphs
GSM/UMTS FDD : frequency
UMTS TDD : phase alignment
Mobile Wimax (5) : phase alignment
LTE : phase alignment
CDMA2000 : phase alignment
TD-SCDMA : phase alignment
3.1.1.2. Using mini-tables
Synchronization type (e.g. time, frequency or phase)
+------------------+-----------------+
| GSM/UMTS FDD | frequency |
| UMTS TDD | phase alignment |
| Mobile Wimax (5) | phase alignment |
| LTE | phase alignment |
| CDMA2000 | phase alignment |
| TD-SCDMA | phase alignment |
+------------------+-----------------+
Frequency stability
+------------------+----------------+
| GSM/UMTS FDD | 50-250 ppb (1) |
| UMTS TDD | 50-250 ppb (1 |
| Mobile Wimax (5) | 15 ppb |
| LTE | 50-250 ppb (1) |
| CDMA2000 | 50-250 ppb (1) |
| TD-SCDMA | 50-250 ppb (1) |
+------------------+----------------+
Uncalibrated time/time accuracy
+-----------+-------------------------------------------------------+
| GSM/UMTS | NA |
| FDD | |
| UMTS TDD | The phase alignment of neighbouring base stations |
| | shall be within 2.5us. |
| Mobile | The phase alignment of neighbouring base stations |
| Wimax (5) | shall be within 1 us |
| LTE | From 1us to 50us (2, 3) |
| CDMA2000 | The pilot time alignment error should be less than |
| | 3us and shall be less than 10us(compared to system |
| | time) |
| TD-SCDMA | The phase alignment of neighbouring base stations |
| | shall be within 3us |
+-----------+-------------------------------------------------------+
3.1.1.3. Using Figures
Synchronization type (e.g. time, frequency or phase)
GSM/UMTS FDD : frequency
UMTS TDD : phase alignment
Mobile WiMAX (5) : phase alignment
LTE : phase alignment
TDMA2000 : phase alignment
TD-SCDMA : phase alignment
Frequency stability
GSM/UMTS FDD : 50-250 ppb (1)
UMTS TDD : 50-250 ppb (1
Mobile WiMAX (5) : 15 ppb
LTE : 50-250 ppb (1)
TDMA2000 : 50-250 ppb (1)
TD-SCDMA : 50-250 ppb (1)
Uncalibrated time/time accuracy
GSM/UMTS FDD : NA
UMTS TDD : The phase alignment of neighbouring base stations
shall be within 2.5us.
Mobile WiMAX (5) : The phase alignment of neighbouring base stations
shall be within 1 us
LTE : From 1us to 50us (2, 3)
TDMA2000 : The pilot time alignment error should be less than
3us and shall be less than 10us (compared to
system time)
TD-SCDMA : The phase alignment of neighbouring base stations
shall be within 3us
3.1.1.4. The original
Cellular Backhaul Requirements
+-----------+-------+--------+---------+--------+---------+---------+
| Requireme | GSM/U | UMTS | Mobile | LTE | CDMA200 | TD-SCDM |
| nts | MTS | TDD | Wimax | | 0 | A |
| | FDD | | (5) | | | |
+-----------+-------+--------+---------+--------+---------+---------+
| Synchroni | frequ | phase | phase | phase | phase | phase |
| zation | ency | alignm | alignme | alignm | alignme | alignme |
| type | | ent | nt | ent | nt | nt |
| (e.g. | | | | | | |
| time, | | | | | | |
| frequenc | | | | | | |
| yor phase | | | | | | |
| ) | | | | | | |
| --------- | ----- | ------ | ------ | ------ | ------ | ------- |
| Frequency | 50-25 | 50-250 | 15 ppb | 50-250 | 50-250 | 50-250 |
| stability | 0ppb | ppb | | ppb | ppb (1) | ppb (1) |
| | (1) | (1) | | (1) | | |
| --------- | ----- | ------ | ------ | ------ | ------ | ------- |
| Frequency | 50-25 | 50-250 | 15 ppb | 50-250 | 50-250 | 50-250 |
| accuracy | 0ppb | ppb | | ppb | ppb (1) | ppb (1) |
| | (1) | (1) | | (1) | | |
| --------- | ----- | ------ | ------ | ------ | ------ | ------- |
| Uncalibra | | | | | | |
| ted | | | | | | |
| time/tim | | | | | | |
| estabilit | | | | | | |
| y | | | | | | |
| --------- | ----- | ------ | ------ | ------ | ------ | ------- |
| Uncalibra | NA | The | The | From | The | The |
| ted | | phase | phase | 1us to | pilot | phase |
| time/tim | | alignm | alignme | 50us | time | alignme |
| eaccuracy | | ent of | nt of | (2, 3) | alignme | nt of |
| | | neigh | neighb | | nt erro | neighb |
| | | bourin | ouring | | rshould | ouring |
| | | g base | base | | be les | base |
| | | stat | stati | | sthan | stati |
| | | ions | onsshal | | 3us an | onsshal |
| | | sha | l be | | dshall | l be |
| | | ll be | with | | be les | with |
| | | wit | in 1 us | | sthan | in 3us |
| | | hin2.5 | | | 10us(c | |
| | | us. | | | ompared | |
| | | | | | to | |
| | | | | | syste | |
| | | | | | m time) | |
| --------- | ----- | ------ | ------ | ------ | ------ | ------- |
Rodrigues & Lindqvist Expires September 3, 2009 [Page 7]
Internet-Draft TICTOC March 2009
| Stabiliza | As | As | As soon | As | As soon | As soon |
| tion time | soon | soon | as | soon | as | as |
| | as | as | possibl | as | possibl | possibl |
| | possi | possib | e | possib | e | e |
| | ble | le | | le | | |
| --------- | ----- | ------ | ------ | ------ | ------ | ------- |
| Jitter on | Depen | Depend | | Depend | Depends | Depends |
| recovered | ds on | son th | | son th | on the | on the |
| timing | the | eoscil | | eoscil | oscilla | oscilla |
| signal | osci | lator | | lator | tor | tor |
| | llato | stab | | stab | stabil | stabil |
| | r sta | ility | | ility | ity | ity |
| | bilit | | | | | |
| | y | | | | | |
| --------- | ----- | ------ | ------ | ------ | ------ | ------- |
| Wander on | Depen | Depend | | Depend | Depends | Depends |
| recovered | ds on | son th | | son th | on the | on the |
| timing | the | eoscil | | eoscil | oscilla | oscilla |
| signal | osci | lator | | lator | tor | tor |
| | llato | stab | | stab | stabil | stabil |
| | r sta | ility | | ility | ity | ity |
| | bilit | | | | | |
| | y | | | | | |
| --------- | ----- | ------ | ------ | ------ | ------ | ------- |
| What | | | | | | |
| expected | | | | | | |
| network | | | | | | |
| character | | | | | | |
| istics | | | | | | |
| (WAN, | | | | | | |
| LAN, MAN | | | | | | |
| ,private, | | | | | | |
| public, | | | | | | |
| etc)? | | | | | | |
| --------- | ----- | ------ | ------ | ------ | ------ | ------- |
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