Contents. 1. HSPA & HSPA+ Overview. 2. HSDPA Introduction. 3. HSUPA Introduction. 4. HSPA+ Introduction

Transcription

1 Contents 1. HSPA & HSPA+ Overview 2. HSDPA Introduction 3. HSUPA Introduction 4. HSPA+ Introduction Page58

2 All the HSPA+ Features in RAN11 and RAN12 3GPP Version HSPA+ Technology RAN Version Release 7 Downlink Enhanced L2 RAN x2 MIMO RAN 11.0 Downlink 64QAM RAN 11.0 Downlink Enhanced CELL_FACH Operation RAN 11.0 Continuous packet connectivity (CPC) RAN 11.0 Uplink 16QAM RAN 12.0 Release 8 Uplink Enhanced L2 RAN 12.0 Downlink MIMO+64QAM RAN 12.0 DC-HSDPA RAN 12.0 Page59

3 HSPA+ Introduced in Huawei Product HSPA+ Technology RAN Version Downlink DC-HSDPA+MIMO RAN 13.0 Traffic-Based Activation and Deactivation of Secondary Carrier in Dual-Carrier HSDPA RAN 13.0 E-DPCCH Boosting RAN 13.0 Enhanced Uplink CELL_FACH RAN 13.0 DC-HSUPA RAN 14.0 DB-HSDPA+MIMO+64QAM RAN C+MIMO+64QAM RAN 15.0 Flexible DC/DB-HSDPA RAN 15.0 Page60

4 Modulation Modes for HSPA+ Three modulation modes can be used for HS-PDSCH 64QAM allows more bits per Symbol to be transmitted Higher peak rate achieved in good channel condition Page61

5 What is MIMO? MIMO: Multiple Input Multiple Output Transmitter Wireless Channel Receiver N M Channel Condition Feedback Page62

6 What can MIMO provide? 2 2 MIMO can increase peak data rate to 28Mbps Data Stream 1 Transmitter Wireless Channel Receiver Data Stream 2 Channel Condition Feedback Page63

7 Enhanced CELL_FACH Operation Enhanced CELL_FACH operation Enhanced CELL_FACH operation allows the use of HSDPA technologies for the UEs in the CELL_FACH, CELL_PCH, and URA_PCH state. The purpose is to increase the peak rates in these states and reduce the signaling transmission delay during service setup or state transition with the result improving the user experience. Page64

8 DL Enhanced L2 This feature allows Uu L2 to use flexible PDU size on RLC layer and segmentation on MAC layer. The feature prevents the L2 from becoming the bottleneck of higher Uu rate increased by MIMO and 64QAM. DL enhanced L2 is the precondition of MIMO, 64QAM and enhanced CELL_FACH operation. Page65

9 Enhanced L2 Enhanced L2 allows flexible PDU sizes at the RLC layer and segmentation at the MAC layer on the Uu interface. The feature improves the transmission efficiency. fixed RLC PDU size Before 336bits 656bits flexible RLC PDU size With Enhanced L2 Page66

10 CPC (Continuous Packet Connectivity) CPC allows the uplink and downlink transmissions to take place at periodic intervals. This feature reduces the transmitted power (and thus increases the UE battery life) because the UE does not have to monitor and transmit overhead channels every TTl. This reduction in the transmitted power also helps to increase the uplink capacity by decreasing the total interference. This improvement is especially significant when there are users who transmit data infrequently as VoIP users. CPC feature consists of DL DRX, UL DTX and HS-SCCH less operation. Page67

11 Release 7 HSPA+ Capable UE Categories HS-DSCH category Supported Modulations Without MIMO Supported Modulations with MIMO Category 13 Category 14 Category 15 Category 16 Category 17 Category 18 QPSK, 16QAM, and 64QAM QPSK and 16QAM QPSK, 16QAM, and 64QAM None QPSK and 16QAM QPSK and 16QAM Page68

12 Downlink MIMO with 64QAM In RAN12 downlink MIMO and 64QAM can be used simultaneously by one UE to receive HSDPA data. With this technology, the theoretical downlink peak rate can reach 42 Mbps. Page69

13 UE Categories for MIMO with 64QAM UE categories 19 and 20 support MIMO with 64QAM. HS-DSCH category Maximum number of HS-DSCH codes received Minimum inter-tti interval Maximum number of bits of an HS-DSCH transport block received within Total number of soft channel bits Supported modulatio ns without MIMO operation Supported modulations simultaneous with MIMO operation an HS-DSCH TTI Category 19 Category QPSK, 16QAM, 64QAM Page70

14 Prerequisites for MIMO with 64QAM Only PS streaming service, PS interactive service or PS background service can be carried by MIMO, 64QAM or MIMO with 64QAM. The cell supports enhanced L2. UE supports MIMO with 64QAM. The service is carried by HSDPA. Page71

15 What is DC-HSDPA (Dual-cell HSDPA)? DC-HSDPA allows a UE to set up HSDPA connections with two inter-frequency time-synchronous cells that have the same coverage. Theoretically, DC-HSDPA with 64QAM can provide a peak rate of 42Mbps in the downlink. Page72

16 DC-HSDPA Basic Concepts Anchor carrier: a carrier that carries all the channels, including uplink dedicated channels, of a UE. Each UE has only one anchor carrier. Supplementary carrier: a carrier that carries only three types of downlink channel of a UE. Each UE has only one supplementary carrier. The three types of downlink channel are as follows: HS-SCCH HS-PDSCH P-CPICH Page73

17 Why DC-HSDPA is used? DC-HSDPA can improve downlink data rate. The theoretical peak data rate with DC-HSDPA is 42Mbps. DC-HSDPA can reduce time delay for some services such as HTTP. DC-HSDPA can improve the data rate in cell edge and improve downlink coverage. DC-HSDPA can improve the system capacity when downlink load is unbalanced between different frequencies. The gain is very obvious in cell edge. Page74

18 UE categories for DC-HSDPA UE categories 21, 22, 23 and 24 support DC-HSDPA. HS-DSCH category Maximum number of HS-DSCH codes received Minimum inter-tti interval Maximum number of bits of an HS-DSCH transport block received within an HS-DSCH TTI Total number of soft channel bits Category Category Supported modulations with dual cell operation QPSK, 16QAM Category QPSK, 16QAM, Category QAM Page75

19 Prerequisites for DC-HSDPA Only PS streaming service, PS interactive service or PS background service can be carried by DC-HSDPA. The cell supports downlink enhanced L2. UE supports DC-HSDPA. The service is carried by HSDPA. Page76

20 Uplink Enhanced L2 Uplink enhanced L2 allows flexible PDU sizes at the RLC layer and segmentation at the MAC layer on the Uu interface. The feature improves the uplink transmission efficiency. uplink fixed RLC PDU size Before R8 336bits 656bits uplink flexible RLC PDU size R8 Page77

21 Uplink 16QAM Introduction Uplink 16QAM modulates 4 bits/symbol whereas the original QPSK modulates only 2 bits/symbol. As a result, it doubles the HSUPA data rate to 11.5Mbps at the physical layer. HSUPA 16QAM allows more bits per Symbol to be transmitted Page78

22 Technical Characteristics In the case of 16QAM, a gain is achieved only when the signalto-noise ratio (SNR) is high. Therefore, a good channel environment is required, for example, a cell with good indoor coverage or micro coverage. In comparison with QPSK, a gain is achieved only when 16QAM is used after the UL rate reaches 4Mbps. Therefore, the UL 16QAM is configured only after the maximum bit rate (MBR) exceeds 4Mbps. Page79

23 UE categories for UL 16QAM UE category 7 supports UL 16QAM. E-DCH category Maxim um numbe r of E- DCH codes transm itted Minim um spread ing factor Support for 10 and 2 ms TTI EDCH Category 7 4 SF2 10ms and 2 ms TTI Maximum number of bits of an E- DCH transport block transmitted within a 10 ms E- DCH TTI Maximum number of bits of an E- DCH transport block transmitted within a 2 ms E- DCH TTI Page80

24 DC-HSDPA+MIMO DC-HSDPA+MIMO (3GPP R9/ Huawei RAN13) combines DC-HSDPA and MIMO. It can provides: Higher peak date rate Higher system capacity Better coverage for cell-edge users Lower time delay Page81

25 Main Idea of DC-HSDPA+MIMO Downlink peak rate up to 84 Mbit/s 5MHz 5MHz The two carriers cover the same area. The two carriers both use the multi-antenna technology. Carrier 1 Carrier 2 Data is sent to the UE simultaneously over two adjacent carriers in MIMO mode. Carrier 1 Carrier 2 f The two carriers are adjacent. Page82

26 Application Scenario of DC-HSDPA+MIMO DC-HSDPA+MIMO brings the performance gains of DC-HSDPA and MIMO. In all scenarios, DC-HSDPA sends data simultaneously over dual carriers, thereby improving the user rate. DC-HSDPA+MIMO applies to the following scenarios: WiFi coverage areas and other hot spots, such as airports and hotels Universities and other enclosed places, such as courtyards, halls, and restaurants Stadiums, arts centers, and other surrounded scenarios Malls, markets, and other densely populated areas Residential areas where the operator can use the feature as a substitute for DSL/cables to provide broadband Internet access Page83

27 Adaptation Requirements: UE Capability The following table shows the UE categories supporting DC- HSDPA+MIMO. Maximum HS-DSCH Number of HS- Category DSCH Codes TB Size Category Category Category Category Supported Modulations Simultaneous with Dual Cell and MIMO Operation QPSK, 16QAM QPSK, 16QAM, 64QAM Page84

28 Purpose of E-DPCCH Boosting This feature improves the multipath search and channel estimation performance during high-speed data transmission. With this feature the maximum uplink user throughput over HSUPA increases to 11Mbit/s. While ensuring QoS, this feature increases the uplink capacity over HSUPA by minimizing the load overhead on each uplink channel. Page85

29 Main Idea of E-DPCCH Boosting Page86

30 Adjacent Carrier DC-HSUPA Introduction DC-HSUPA is a 3GPP defined technology that combines the multicarrier technology and HSUPA in the uplink. DC-HSUPA significantly increases the uplink rate, greatly improving user experience. E-DCH F2 UE(Cat8,9) E-DCH F1 NodeB DC-HSUPA Page87

31 DC-HSUPA Principles DC-HSUPA allows a UE to transmit data simultaneously on two uplink adjacent carriers that provide the same coverage. Page88

32 Improvements DC-HSUPA has the following improvements compared to SC-HSUPA: Higher user throughput Reduced delay of best effort (BE) services The improvements help operators maintain a competitive edge by providing a better user experience and higher network service quality. DC-HSUPA is currently used for high-speed packet switched (PS) streaming services and BE services. Page89

33 Channel Mapping In DC-HSUPA operations, two E-DCH transport channels and two HS- DSCH transport channels need to be configured for the UE because DC-HSUPA requires that DC-HSDPA be used in the downlink. Page90

34 UE Categories In 3GPP Release 9, E-DCH categories 8 and 9 are introduced to support DC-HSUPA Category Maximum Number of E- DCH Codes Transmitted per Transport Block Minimum Spreading Factor Support for 10 and 2 ms TTI E-DCH Maximum Number of Bits of an E-DCH Transport Block Transmitted Within a 2 ms E-DCH TTI High Order Modulation Capability of UE in Dual- Carrier Mode Max Bit Rate 8 4 SF2 2 ms TTI SF2 2 ms TTI Uplink 16QAM 11.5 Mbit/s 23 Mbit/s Page91

35 HSPA+ in 3GPP R10/ Huawei RAN15 1. DB-HSDPA+MIMO+64QAM 2. 4C+MIMO+64QAM 3. Flexible DC/DB-HSDPA Page92

36 DB-HSDPA The DB-HSDPA feature enables a UE to simultaneously establish HSDPA connections in two inter-band co-coverage cells. The two cells form a DB-HSDPA cell group Page93

37 DB-HSDPA Cell Group The two cells in a DB-HSDPA cell group must meet all of the following requirements: 1 2 Restrictions The two cells operate in different frequency bands and the bandwidth does not exceed 5 MHz. The combination of the frequency bands must comply with those listed in next page The two cells belong to the same sector of a NodeB and have the same coverage 3 The two cells are in the same downlink resource group of a NodeB 4 The two cells have the same time offset (specified by the TCELL parameter) 5 The two cells support HSDPA and Downlink Enhanced L2 Page94

38 DB-HSDPA Frequency Bands DB-HSDPA Configuration Combination of Frequency Bands Uplink Frequency Band Downlink Frequency Band 1 I + VIII (2100 MHz MHz) I or VIII I and VIII 2 II + IV (1900 MHz + AWS) II or IV II and IV 3 I + V (2100 MHz MHz) I or V I and V 4 I + XI (2100 MHz MHz) I or XI I and XI 5 II + V (1900 MHz MHz) II or V II and V Page95

39 Benefits of DB-HSDPA Support dual band Increase single-user throughput 28 Mbit/s without 64QAM 42 Mbit/s with 64QAM Single-user Page96

40 DB-HSDPA + MIMO In RAN15.0, the DB-HSDPA+MIMO feature supports the following configurations: Only one carrier in a DB-HSDPA cell group is configured to support MIMO. The theoretical peak rate of this configuration is 63 Mbit/s Both carriers in a DB-HSDPA cell group are configured to support MIMO. The theoretical peak rate of this configuration is 84 Mbit/s Page97

41 Benefits of DB-HSDPA + MIMO Increased single-user peak rate Compare with DB-HSDPA or single carrier MIMO, DB-HSDPA + MIMO increase single-user peak rate Without 64QAM: from 28 Mbit/s to 56 Mbit/s With 64QAM: from 42 Mbit/s to 84 Mbit/s Increased cell capacity According to simulation results, system throughput is increased by about 10%-20% Page98

42 4C-HSDPA+MIMO The basic principles of 4C-HSDPA+MIMO are the same as those of 4C- HSDPA 4C-HSDPA+MIMO allows a combination of 4C-HSDPA and MIMO+64QAM. 4C-HSDPA+MIMO uses a maximum of four carriers enabled with MIMO+64QAM for the HSDPA transmission of a UE, which increases the UE data rate and system resource utilization Page99

43 Combination of Frequency Bands and Frequencies 3GPP limits on the frequency bands and frequencies that can be used by 4C-HSDPA 4C-HSDPA configuration in single-band scenarios 4C-HSDPA Configuration in Single-Band Scenario Operating Band Number of Downlink Carriers I-3 I 3 Page100

44 Combination of Frequency Bands and Frequencies (Cont.) 4C-HSDPA configuration in dualband scenarios 4C-HSDPA Configuration in Dualband Scenarios Uplink Band Downlink Band A Number of Downlink Carriers in Band A Downlink Band B Number of Downlink Carriers in Band B I-2-VIII-1 I or VIII I 2 VIII 1 I-3-VIII-1 I or VIII I 3 VIII 1 II-1-IV-2 II or IV II 1 IV 2 II-2-IV-1 II or IV II 2 IV 1 II-2-IV-2 II or IV II 2 IV 2 I-1-V-2 I or V I 1 V 2 I-2-V-1 I or V I 2 V 1 Page101

45 Primary and Secondary Cells A 4C-HSDPA UE has a maximum of four serving cells Band B Band A F 4 F 3 F 2 F 1 Secondary cell 3rd Secondary cell 2nd Secondary cell 1st Primary cell UE NodeB Page102

46 Multi-Carrier Cell Group 4C-HSDPA requires three or four inter-frequency co-coverage cells. These cells are configured as a multi-carrier cell group on the NodeB side A multi-carrier cell group must meet the following conditions: One cell can belong to only one multi-carrier cell group A multi-carrier cell group consists of a maximum of four cells Page103

47 Requirements for 4C-HSDPA Cells 4C-HSDPA cells in a multi-carrier cell group must meet all of the following conditions: They must belong to the same sector of a NodeB They must have the same time offset (specified by the Tcell parameter) One cell can belong to only one multi-carrier cell group Page104

48 4C-HSDPA+MIMO Cells 4C-HSDPA+MIMO cells have 4C-HSDPA and MIMO enabled. When a UE uses a 4C-HSDPA+MIMO RB, the UE uses MIMO only in the 4C-HSDPA cell that has MIMO enabled. When 64QAM+MIMO is enabled, the Primary/Secondary common Pilot (PSP) mode is recommended, that is, a P-CPICH and an S- CPICH must be configured Page105

49 Channel Mapping Page106

50 CQI Feedback Relationship between the number and MIMO capability of 4C- HSDPA cells and the spreading factor used by the HS-DPCCH Scenario 3C-HSDPA (without MIMO) 3C-HSDPA (with MIMO) 4C-HSDPA (with or without MIMO) Spreading Factor Used by the HS-DPCCH SF256 SF128 SF128 Page107

51 4C-HSDPA+MIMO RB 4C-HSDPA+MIMO applies to the same types of services as 4C-HSDP HSPA+ Technology Cell 1 Cell 2 Cell 3 Cell 4 Peak Downlink Rate (Mbit/s) 4C-HSDPA+MIMO 168 4C-HSDPA+MIMO 4C-HSDPA+MIMO 4C-HSDPA 147 4C-HSDPA+MIMO 4C-HSDPA 126 4C-HSDPA+MIMO 4C-HSDPA 105 3C-HSDPA+MIMO C-HSDPA+MIMO 3C-HSDPA+MIMO 3C-HSDPA C-HSDPA+MIMO 3C-HSDPA - 84 Page108

52 UE Categories HS-DSCH Category Maximum Number of HS-DSCH Codes Received Minimum Inter-TTI Interval Maximum Number of Bits of an HS-DSCH Transport Block Received Within an HS-DSCH TTI Total Number of Soft Channel Bits Total Number of Downlink Carriers Total Number of Downlink Carriers That Are Configured with MIMO Supported Modulations Without MIMO Operation with Aggregated Carriers Supported Modulations with MIMO Operation and Aggregated Carriers 42,192 42,192 42,192 42, ,600 1,555,200 1,036,800 2,073, QPSK/16QAM/ 64QAM - QPSK/16QAM/ 64QAM QPSK/16QAM 64QAM QPSK/16QAM/ 64QAM - QPSK/16QAM/ 64QAM QPSK/16QAM 64QAM Page109

53 Network Impacts System Capacity 4C-HSDPA slightly increases the cell load in the uplink. The cell load increase is represented by an increase in the uplink RTWP 4C-HSDPA UEs consume one CE more than SC-HSDPA UEs A baseband processing board supports more SC-HSDPA UEs than 4C- HSDPA UEs Network Performance Increased single-user downlink throughput Deteriorated uplink cell edge coverage Page110

54 Requirement of License The license for 4C-HSDPA has been activated on the NodeB side Feature ID Feature Name License Control Item NE Sales Unit WRFD C-HSDPA 4C-HSDPA (per Cell) NodeB Per Cell Page111

55 Example of Cell Group Example of cell group configuration with and without the Flexible DC/DB-HSDPA feature Page112

56 Multi-Carrier HSDPA Technologies Supported The Flexible DC/DB-HSDPA feature supports the following multi-carrier HSDPA technologies: DC-HSDPA or DC-HSDPA+MIMO DB-HSDPA or DB-HSDPA+MIMO 4C-HSDPA or 4C-HSDPA+MIMO The Flexible DC/DB-HSDPA feature flexibly allocates different DC- HSDPA, DB-HSDPA, and 4C-HSDPA groups to different UEs Page113

57 Flexible DC/DB-HSDPA Example of using the Flexible DC/DB-HSDPA feature and multi-carrier HSDPA technologies together Page114

58 Cell HSPA+ Capability Cells in a multi-carrier cell group must have the Flexible DC/DB-HSDPA feature enabled If cells in a multi-carrier cell group operate in two different frequency bands, all the cells in the group must have either the DB-HSDPA or DB-HSDPA+MIMO feature enabled In a multi-carrier cell group, cells in the same frequency band must have either the DC-HSDPA or DC-HSDPA+MIMO feature enabled Cells that require the 4C-HSDPA feature in a multi-carrier cell group must have either the 4C-HSDPA or 4C-HSDPA+MIMO feature enabled Page115

59 Benefits The Flexible DC/DB-HSDPA feature dynamically uses instantaneous idle resources in a cell, increasing the UE data rate and system capacity. In the case of three carriers, this feature increases the UE data rate by about 20% when UEs are processing burst services Page116

60 Impacts on DC-HSUPA The Flexible DC/DB-HSDPA feature does not affect the configuration of DC-HSUPA DC-HSUPA Group F1 F2 F3 DC-HSDPA Group DC-HSDPA Group DC-HSDPA Group Page117

61 Thank you