Embed Size (px)
DESCRIPTION
Good
Citation preview
1.02修订，修订备注页页眉
1.03，郭宁：
capacity的胶片p33应该先是SINR Probability Distribution
然后是Simulation Result
另外存在多处RLP，是否应该改为RLC？
42页，是service model
43页，是traffic model
另外，建议在练习中加入peak to average ratio的表。这样更完整。
胶片中提到的penetration rate和penetration ratio用哪个更好？建议改成一个。。。
1.04，孙檀
P9,注释中有个TRX，不知所云，建议改成traffic
1.10，梁杰
修改更新
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
Basically LTE capacity dimensioning includes two parts which are capacity dimensioning for
single site and total network throughput calculation.
Capacity dimensioning for single site is performed based on some dimensioning
parameters such as duplex mode, system bandwidth and etc.
Total traffic volume calculation is performed based on service model and traffic
model. Firstly the single user throughput is calculated. Then the total network
throughput is output.
The Number of eNodeB by capacity is the result that the total traffic volume is divided by
the single site capacity.
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
By simulation SINR can be mapped to MCS. A certain MCS corresponds to a certain
throughput. So finally cell average throughput can be obtained by SINR distribution.
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
Based on service model and traffic model, the single user network throughput can be
calculated. Then the total network throughput can be obtained by multiplexing the
number of subscribers with the single user throughput.
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
Service model describe the service pattern which includes some typical parameters for
different service types.
Parameters in service model:
Session Time : the duration of each PPP session
Session Duty Ratio: the data transmission ratio of each PPP session
BLER: Block Error Rate
Bearer Rate : the service application layer(IP) bearer rate
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
Traffic model describes the UE behaviors.
Parameters in traffic model:
Penetration Ratio: proportion of service type
BHSA: busy hour session attempts for single user
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
Single User Throughput can be calculated based on traffic model and service model.
Basically it is the sum of throughput of different service types for one subscriber.
For PS service some margin should be reserved for burst traffic. So the parameter Peak to
Average Ratio is used in the formula.
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
The result is based on the example of traffic model.
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
The throughput in IP layer and MAC layer are different. For the same traffic data flow the
throughput in MAC is greater than that in IP layer because PDCP header/RLC header/MAC
header are added. The relative efficiency is related to the packet size. In the table a packet
size with 300 bytes is used as example.
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
U-NET can simulate the throughput of the MAC layer and the application layer and the
throughput of each service on the basis of sites and cells.
U-NET can also simulate the following counters:
Actual transmit power
Uplink IoT
Actual uplink load
Number of uplink RBs in use
Number of downlink RBs in use
Uplink/downlink service rate of the MAC layer
Uplink/downlink service rate of the application layer
Number of subscribers in each state
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
CDF: Cumulative Distribution Function
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
PDF: Probability Distribution Function
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
U-NET can simulate the throughput change.
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
U-NET can simulate the different UE states such as No Access, Offline, Uplink No Cover,
Downlink No Cover and etc.
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
LTE Radio Network Capacity Dimensioning
Confidential Information of Huawei. No Spreading Without Permission
