Unlock instant, AI-driven research and patent intelligence for your innovation.

The method of transport format combination selection implemented in wtru and wtru

A combination of transmission formats and multi-input technology, applied in transmission systems, radio transmission systems, power management, etc.

Inactive Publication Date: 2017-12-08
INTERDIGITAL PATENT HLDG INC
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using proper precoding operation can reduce interference between streams, but requires feedback signal from receiver (closed loop)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • The method of transport format combination selection implemented in wtru and wtru
  • The method of transport format combination selection implemented in wtru and wtru
  • The method of transport format combination selection implemented in wtru and wtru

Examples

Experimental program
Comparison scheme
Effect test

example 2

[0438] 8.2 Example 2: Single Grant, Power Offset for Stream 2, 1TB

[0439] In this example, it is assumed that the WRTU receives a single service grant from the network with an additional power offset indication for the 2nd stream, but this time using a single HARQ process (so a single TB is transmitted even during dual stream operation). The WRTU may change the data rate on the secondary stream based on the power offset indication for the second stream.

[0440] In this example for this scenario, the WRTU may follow the following procedures (in any order or combination). The WRTU calculates the supported E-TFC groups of the mainstream, assuming single-stream transmission and also assuming dual-stream transmission. This can be achieved, for example, using the method described above. If there are no HARQ retransmissions, the WRTU determines how many HARQ retransmissions will occur in the upcoming E-DCH transmission. This can be achieved, for example, using the method desc...

example 3

[0441] 8.3 Example 3: Dual Authorization

[0442] In this example, the WRTU is configured with two service grants, one for each flow. Therefore, a WRTU transmits two TBs simultaneously on two HARQ processes when configured for dual-stream operation. This can be similar to DC-HSUPA. For limitation, power can be divided according to grants (eg like DC-HSUPA). Alternatively, it can be divided all the time, no matter how many transfers are required. Although, situations where too much power is allocated to the second stream (eg, the first stream is being retransmitted) should be avoided. In some embodiments, pre-allocation techniques may be used. Choice can be traditional (DC-HSUPA). The data in the buffer can be conventionally filled. Physical channel mapping can be done independently, thus allowing any TF combination.

[0443] It is possible to offset the "drive" authorization from the second power, where Example 1 and Example 3 above become similar.

[0444] It should...

example 4

[0445] 8.4 Example 4: Open Loop Operation

[0446]In this scenario, the WRTU is configured to run in dual-stream open-loop operation. The WRTU receives no additional information from the network about the quality of the second stream. The WRTU may on the other hand receive a dynamic or semi-static class indication from the Node-B. When the WRTU is configured for dual stream or class 2 transmission, the WRTU may follow the following procedure. The WRTU may determine supported E-TFCs according to any suitable method. For example, a WRTU may be configured to use a different E-TFCI and power offset reference table when configured for class 2 transmission. The WRTU performs E-TFC selection using traditional methods; the MAC layer delivers PDUs to the physical layer. The WRTU applies channel coding using traditional methods. In addition to physical channel segmentation, interpolation and physical channel mapping, the WRTU also applies physical layer mapping and optional strat...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed herein are system and method embodiments for selection of transmission parameters for transmit diversity terminals. According to one aspect, a method for controlling transmission parameters of a wireless receive / transmit unit may include configuring a WRTU to transmit dual streams when the first stream uses a predetermined transport block (TF) or subset of TFs. The method may also include applying the configuration to the WRTU.

Description

[0001] Cross References to Related Applications [0002] This application claims U.S. Provisional Patent Application No. 61 / 430,769, filed January 7, 2011, entitled "SELECTION OF TRANSMISSION PARAMETERS FOR TRANSMIT DIVERSITY TERMINALS"; FOR TRANSMIT DIVERSITY TERMINALS," U.S. Provisional Application No. 61 / 441,928; U.S. Provisional Application No. 61 / 523,028, filed August 12, 2011, entitled "SELECTION OF TRANSMISSION PARAMETERS FOR TRANSMIT DIVERSITY TERMINALS"; and September 2011 benefit of U.S. Provisional Application No. 61 / 541,691, filed on the 30th, entitled "SELECTION OF TRANSMISSIONPARAMETERS FOR TRANSMIT DIVERSITY TERMINALS," the contents of each of which are hereby incorporated by reference. Background technique [0003] Multi-antenna transmission / reception technologies with advanced signal processing algorithms are generally collectively referred to as multiple-input multiple-output (MIMO) technologies. MIMO has been widely studied and can significantly improve the...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/0417H04W52/16
CPCH04W52/16H04B7/0417H04W28/16H04W72/23H04W72/563
Inventor B·佩尔蒂埃H·O·张D·帕尼
Owner INTERDIGITAL PATENT HLDG INC