recientes y perspectivas
1. Las MYPE en la economía brasileña
4.1. Programas de financiamiento
4.1.1 ZWF25-01-003 HSUPA Cell Indicator in Idle Mode
Benefits
This feature indicates whether the cell supports HSUPA in system broadcast message so that UE can camp on a suitable cell.
Description
The indicator of the HSUPA cell can be broadcasted through the system message SIB5 or SIB5bis. When searching cells, UE can recognize whether a cell supports the HSUPA service according to the indicator, and select a preferred cell accordingly. For example, an HSUPA data card user can search the HSUPA cell in a same sector and camp on it.
UE can be configured to select a cell automatically according to the capability of cells.
Introduced Version
U9.1&Before
Enhancement
No
4.1.2 ZWF25-01-004 HSUPA UE Category Support
Benefits
This feature can support the following HSUPA UE categories as shown in Table 6.
Description
ZTE RAN supports the following HSUPA UE categories defined in the 3GPP protocol.
The categories show the different UE capability to support HSUPA service. For details, please refer to 3GPP TS 25.306.
Table 4-1 HSUPA UE Category Supported by ZTE
Category
7 2XSF2+2XSF4 QPSK/16QAM 10ms, 2ms 2.0Mbps 11.50Mbps
Introduced Version
For 10ms TTI, HSUPA UE categories 1 to 5 and for 2ms TTI, HSUPA UE category 6 are supported in U9.1&Before.
Enhancement
UE category 6 is supported in UR11.1.
4.1.3 ZWF25-01-005 Flexible HSUPA Deployment
Benefits
This feature supports flexible deployment of dedicated HSUPA carrier or R99 and HSUPA in the same carrier.
Deployment of the same carrier is utilized for R99 and HSUPA in uplink, and uses characteristic of HSUPA Fast Scheduling to develop high-speed data service, improve the gain of frequency spectrum, and lower the cost of network operation.
Deployment of HSUPA in dedicated carrier to provide higher peak uplink data rate and throughput of a cell.
Description
Carrier frequency sharing between the HSUPA and R99 means that the cell can provide uplink R99 service and HSUPA service simultaneously and can allocate common resources properly between the R99 and the HSUPA. These common resources include E-AGCH that supports the E-DCH, E-RGCH, and E-HICH, transmitting power of these downlink channels, transmitting bandwidth of the Iub interface, and uplink interference of the cell.
The HSUPA is generally deployed with the HSDPA together. ZTE RAN can enable the HSUPA function in an HSDPA cell to support uplink R99 and HSUPA service simultaneously. The excellent RRM algorithm provided by ZTE can guarantee proper allocation of cell common resources between the two types of services
When the frequency resources available for operator are limited and the R99 service must be provided in the uplink, use the same frequency carrier to deploy the HSUPA and the R99 for utilizing the attributes of the HSUAP to provide high speed data services. But the resources occupied by the R99 can reduce the uplink peak rate and throughput of a cell and affect the QoS of the data services.
When the operator has more frequency resources than what are needed by the R99 service, it is recommended to deploy HSUPA and HSDPA service in separate frequency carrier. Since the frequency band utilization efficiency of the E-DCH is higher than that of the DCH, the dedicated carrier can obtain higher uplink peak rate and cell throughput, improving the QoS of the wireless data service and reducing the cost of high speed data service.
HSDPA and HSUPA dedicated carrier cannot process R99 services. In order to support traditional CS service and low speed PS service (carried on DCH), it"s necessary to deploy carrier to support R99 besides HSUPA/HSDPA dedicated carrier. ZTE RAN system can distribute users to different carriers according to the service type.
Introduced Version
Enhancement
No
4.1.4 ZWF25-01-013 HSUPA Fast Scheduling
Benefits
This feature enables Node B to realize fast scheduling for transmitting uplink date of multi-HSUPA UEs in a cell.
Description
MAC-e entity is added in Node B after introducing HSUPA. It is used to implement HSUPA data scheduling function just as R99 DCH channel data scheduling function realized by MAC layer in RNC. Node B allocates SG (Scheduling Grant) for each UE in the cell, and then sends AG (Absolute Grant) in E-AGCH channel or RG (Relative Grant) in E-RGCH channel to notify UE to use SG. UE can only use the transmitting power in the range which SG allows and that power has impact on uplink data bit rate of UE.
ZTE Node B supports PF (Proportion Fair) algorithm to realize HSUPA fast scheduling.
This algorithm takes into full account of all kinds of factors such as actual requirement of
different services, radio link condition of users, cell uplink interference and cell load.
Meanwhile, the priority of service and the priority of user should be considered (For SPI, refer to ZWF25-05-001 QoS Mapping for HSUPA Service), the users with high priority will obtain more resources.
ZTE RAN supports HSUPA fast scheduling algorithm which can guarantee GBR service data transmitting rate. It also can support method of Non-scheduled to grant UE Non-scheduled transmission date capability, that is, configure to the Node B through NBAP signaling by RNC according to service type in order to ensure the transmission of high-priority data, such as SRB data.
Because HSUPA scheduler is located in Node B, the cell uplink interference can be detected real time. According to real time interference condition, Node B can control and frequently schedule the resource to HSUPA users in every 2ms or 10ms period, and can make use of resource more efficiently to guarantee the higher throughput in E-DCH channel.
As a scheduler of HSUPA non-serving cell, ZTE Node B can control the interference status of non-serving cell through non-serving RG command, so it can avoid allocating excessive power resources for the UEs in serving cell which imposes immense influence on the non-serving cell.
Introduced Version
U9.1&Before
Enhancement
No
4.1.5 ZWF25-01-014 HSUPA HARQ
Benefits
This feature can support a fast ARQ (Automatic Retransmission Request) mechanism in inner loop. Compared with ARQ of outer loop in RLC layer of RNC, it can decrease data transmission delay obviously in Uu interface and increase the maximum date rate.
Description
ZTE RAN supports HSUPA HARQ (Hybrid Automatic Retransmission Request), which is the same method to HSDPA HARQ (please refer to ZWF23-01-014 HSDPA HARQ).
HARQ adopts the fast retransmission and combination technology to improve the transmission efficiency fully. Node B can quickly request UE to retransmit error data received in uplink. Not only gain of time diversity is obtained, but also the requirement of BLER transmitted for the first time decreases due to fast retransmission, consequently the transmitting power of UE can be reduced and the capacity of system is improved.
ZTE RAN supports parallel transmission of multiple HARQ processes so that data can be sent continuously for a certain UE. 4 HARQ processes are supported at most in 10ms TTI and 8 HARQ processes in 2ms TTI.
Introduced Version
U9.1&Before
Enhancement
No
4.1.6 ZWF25-01-021 HSUPA 1.45Mbps Peak Bit Rate
Benefits
This feature can support HSUPA user peak rate up to1.45Mbps.
Description
ZTE RAN supports HSUPA 1.45Mbps user peak rate. When data services are carried over the E-DCH channel, the peak rate in MAC layer can reach 1.45Mps in uplink. At this moment, HSUPA UE category must exceed level 2.
Introduced Version
U9.1&Before
Enhancement
No
4.1.7 ZWF25-01-022 HSUPA 16 Users per Cell
Benefits
This feature can support 16 HSUPA users simultaneously in single cell.
Description
ZTE RAN can support 16 HSUPA users simultaneously in single cell, and it can realize data scheduling for 16 users in single cell.
Introduced Version
U9.1&Before
Enhancement
No
4.1.8 ZWF25-01-023 HSUPA 2Mbps Peak Bit Rate
Benefits
This feature enables 2Mbps peak uplink rate for one user.
Description
ZTE RAN system supports 2Mbps HSUPA peak rate. When a user "s data service is carried on E-DCH, the uplink rate of MAC layer can reach 2Mbps. In this case, the HSUPA UE capability must be level 4 or higher.
Introduced Version
U9.1&Before
Enhancement
No
4.1.9 ZWF25-02-001 PS Interactive/Background Service over HSUPA
Benefits
This feature can support interactive and background service over HSUPA channel.
Compared with DCH channels, more services and higher bit rate can be obtained after using HSUPA technology.
Description
The HSUPA service is carried over the enhanced dedicated channel E-DCH. Adopting the technology of QPSK modulation and HARQ, the E-DCH channel can provide higher bit rate and enable multiple users to share the load of uplink cells. The E-DCH is suitable for the interactive and background services with high burst. The higher peak rate of the channel can effectively improve the user experience.
ZTE RAN supports the maximum uplink bit rate of 5.76Mbps. But the actual maximum bit rate available to the user depends on UE category, the MBR (Maximum Bit Rate) subscribed in the CN (Core Network), payload of the system, and the wireless environment at the time of access.
The RAB wireless parameters of the interactive/background PS data services of the ZTE UMTS RAN comply with 3GPP TS 34.108 protocol.
Introduced Version
In MAC layer, maximum uplink bit rate of 5.76Mbps is supported in U9.1&Before.
Enhancement
No.
4.1.10 ZWF25-02-002 PS Streaming Service over HSUPA
Benefits
This feature can support PS streaming service with GBR guaranteed. Compared with DCH channels, more services and higher bit rate can be obtained after using HSUPA technology.
Description
This feature supports PS streaming service over E-DCH channel such as video monitoring.
ZTE RAN supports HSUPA fast scheduling algorithm based on GBR, so streaming service can be carried over E-DCH.
The RAB wireless parameters of PS streaming service completely comply with 3GPP TS 34.108 in ZTE RAN.
Introduced Version
U9.1&Before
Enhancement
No
4.1.11 ZWF25-02-003 RAB Combination for CS over DCH and PS over HSUPA
Benefits
This feature can support RAB combination for CS over DCH and PS over HSUPA, for example, user can make voice or video call while uploading data.
Description
All ZTE RAN can support CS service and PS I/ B/S service over HSUPA concurrent ly:
− CS AMR voice service
− CS data service, such as video call service.
− CS data streaming service, such as FAX service.
− CS AMR-WB voice service
Note: 1 CS service and 3 PS services can be supported concurrently at most.
When CS service and PS service over HSUPA channel are provided concurrently, the actual maximum bit rate of the uplink PS service depends on UE category, the MBR subscribed in the CN (Core Network), payload of the system, and the wireless environment at the time of access.
The RAB wireless parameters used for supporting CS service and the PS service over HSUPA concurrently comply with 3GPP TS 34.108 in ZTE RAN.
Introduced Version
U9.1&Before
Enhancement
No.
4.1.12 ZWF25-02-004 RAB Combination for Multiple Packet Data Services over HSUPA
Benefits
This feature uses HSUPA channel to carry multiple RABs for multiple PS services, which respectively are corresponding to multiple PDPs. For instance, a user can receive MMS while downloading data. IMS-based streaming service, VoIP service and other services need to use multiple PDPs at the same time as well.
Description
This feature supports up to 4 concurrent PS I/B/S services. The maximal rate of each PS service is decided by subscription rate in CN. The total concurrent rate of all services cannot exceed the maximal available rate of HSUPA, which depends on UE capacity, load of the system and the user radio link environment, etc.
ZTE RAN system supports concurrent multiple PS services over HSUPA. The RAB radio parameters comply with 3GPP TS 34.108 protocol.
Introduced Version
U9.1&Before
Enhancement
From UR11.2 it is supported for four concurrent PS RABs
4.1.13 ZWF25-03-001 HSUPA Soft/Softer Handover
Benefits
This feature is used to keep service continuity and guarantee the communication quality while HSUPA users are moving across intra-frequency adjacent cells.
Description
ZTE RAN system supports E-DCH soft/softer handover after HSUPA is introduced. The handover procedure for E-DCH is the same as that for DCH. (Please refer to ZWF21-03-001 Soft/Softer Handover).
ZTE RAN system supports intra-Node B E-DCH softer handover as well as inter-Node B E-DCH soft handover and inter-RNC E-DCH soft handover. (ZWF25-03-005 HSUPA over Iur is required).
Introduced Version
U9.1&Before
Enhancement
No
4.1.14 ZWF25-03-002 E-DCH Serving Cell Change inside Active Set
Benefits
This feature is used to keep the service continuity and guarantee the communication quality while users are moving across HSUPA cells.
Description
The uplink data of a HSUPA user can be sent through multiple cells in its active set.
However, the scheduling is always controlled by one cell, which is called E-DCH serving cell.
When HSUPA user is moving across HSUPA cells, ZTE RAN system properly changes E-DCH serving cell to the cell with best radio quality, according to pilot power level measured by the UE, to dominate the E-DCH scheduling. Therefore the interference to other non-serving cells in active set is minimized and scheduling effect is optimized.
If a user is using HSUPA and HSDPA simultaneously, E-DCH serving cell and HSDPA serving cell is always the same one. If the user moves, E-DCH serving cell and HSDPA serving cell will change together.
Introduced Version
U9.1&Before
Enhancement
No
4.1.15 ZWF25-03-003 E-DCH Intra-Frequency Hard Handover
Benefits
As a supplement to soft handover, E-DCH int ra-frequency hard handover is used to keep the service continuity if the soft handover can not be executed between the intra-frequency adjacent cells for some causes.
Description
ZTE RAN system supports E-DCH intra-frequency hard handover when HSUPA is introduced. The process is the same as that of DCH. (Please refer to ZWF21-03-002 Intra-Frequency Hard Handover).
If the target cell supports HSUPA, E-DCH serving cell will be changed during intra-frequency hard handover. Otherwise, E-DCH will be switched to DCH during this operation.
Introduced Version
U9.1&Before
Enhancement
No
4.1.16 ZWF25-03-004 E-DCH Inter-Frequency Hard Handover
Benefits
This feature enables an HSUPA user to hand over between inter-frequency cells, which helps to keep service continuity while moving across inter-frequency adjacent cells. It also can be used for load balance among inter-frequency cells in the same coverage.
Description
ZTE RAN system supports E-DCH inter-frequency hard handover when HSUPA is introduced. The process is the same as that of DCH. (Please refer to ZWF21-03-003 Inter-Frequency Hard Handover).
If the target cell supports HSUPA, E-DCH serving cell will be changed during inter-frequency hard handover. Otherwise, E-DCH will be switched to DCH during this operation.
Introduced Version
U9.1&Before
Enhancement
No
4.1.17 ZWF25-03-005 HSUPA over Iur
Benefits
This feature enables HSUPA data frame to be transmitted on Iur interface between RNC, which can improve user experience for high speed data service when moving across different RNCs.
Description
When an HSUPA user is moving across cells of different RNCs, ZTE RAN system controls parameters configuration to DRNC and attached Node B via Iur interface.
HSUPA data frame can be transmitted via Iur interface as well so that E-DCH transmission is retained during inter-RNC handover through Iur interface and it prevents service from falling back to DCH.
Introduced Version
U9.1&Before
Enhancement
No
4.1.18 ZWF25-03-012 HSUPA inter-RAT Reselection
Benefits
This feature keeps service continuity when an HSUPA user is moving between UMTS cell and GSM cell.
Description
ZTE RAN system supports direct inter-cell handover to force an HSUPA user to access to the GSM cell when handover is necessary. It is not necessary to fall back from E-DCH to DCH before inter-RAT reselection.
However, most E-DCH capable UEs do not support compression mode and inter-frequency measurement. ZTE RAN system can define that E-DCH should fall back to DCH during HSUPA inter-RAT Reselection as an optional function and it can be configured by ZTE OMC system.
Introduced Version
U9.1&Before
Enhancement
No
4.1.19 ZWF25-04-001 Admission Control for HSUPA Service
Benefits
This feature implements radio access control for incoming HSUPA service request.
Admission control differentiates service priorit y and allocates system resources to users and services according to service priority respectively without decreasing system stability.
Description
If both Node B and UE are HSUPA capable, HSUPA radio resources can be allocated during service request process. The scenarios in which the service requires new system resources include RRC connection, RAB setup, RAB modification, SRNC relocation, Iur relocation, intra-RNC handover, and dynamic channel allocation, etc. In order to avoid resource exhaustion or overload when accepting new HSUPA service requests, ZTE RAN evaluates the system resources for HSUPA according to the following factors:
− Number of HSUPA users
− CE resource of Node B
− Uplink interference
− Capacity of downlink channel
The capacity of downlink channel is restricted by the number of E-HICH/E-RGCH. Each E-HICH/E-RGCH can be multiplexed for up to 20 HSUPA users.
When performing admission control, ZTE RAN system will consider basic strategy (Please refer to ZWF21-05-003 Differentiated Service) to enable users and services with higher priority to get more system resources and higher QoS level.
Introduced Version
U9.1&Before
Enhancement
No
4.1.20 ZWF25-04-002 Overload Control for HSUPA Service
Benefits
Overload control can stabilize the overloaded system by decreasing system load.
System resource will be reallocated to users and services according to their priority of HSUPA services.
Description
Overload control for HSUPA service is based on RTWP measurement of the cell. When the uplink interference arrives at overload threshold, the following actions of load control can be triggered.
− Decrease DCH rate
− Trigger inter-frequency/inter-RAT handover
− Drop the calls by force.
ZTE RAN system differentiates users and services of different priorities (Please refer to ZWF21-05-002 RAB QoS Parameters Mapping). The load of low-priority users and services will be decreased first, therefore high priority users and services may get more system resources and higher QoS.
Introduced Version
U9.1&Before
Enhancement
No
4.1.21 ZWF25-04-003 Load Balance for HSUPA Service
Benefits
Load balance enables system to deploy traffic to multiple carriers of UMTS or GSM system if available, making best use of radio resources and improving the quality of the network.
Description
While HSUPA function is introduced, ZTE RAN system supports HSUPA service load balance among multiple carriers of UMTS or GSM (Please refer to ZWF21-04-011 Load Balancing for basic process). Besides the primary factor of uplink interference, the HSUPA capability of Node B and UE are also considered for HSUPA load balance.
Introduced Version
U9.1&Before
Enhancement
No.
4.1.22 ZWF25-04-004 Congestion Control Strategy for HSUPA
Benefits
Congestion control intends to reallocate radio resources in the case of system congestion according to service attributes, so as to improve the call setup success ratio and enable proper utilization of system resources.
Description
After HSUPA is introduced, the cell will be congested if it fails to accommodate the incoming HSUPA services. ZTE RAN supports the following congestion control strategies:
l Decrease DCH rate
DCH rate will be decreased if the incoming HSUPA services are restricted because
DCH rate will be decreased if the incoming HSUPA services are restricted because