Your SlideShare is downloading. ×
LTE Patent Engineering for Essential Portfolio Development: Case study for Qualcomm’s Strategy
LTE Patent Engineering for Essential Portfolio Development: Case study for Qualcomm’s Strategy
LTE Patent Engineering for Essential Portfolio Development: Case study for Qualcomm’s Strategy
LTE Patent Engineering for Essential Portfolio Development: Case study for Qualcomm’s Strategy
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Text the download link to your phone
Standard text messaging rates apply

LTE Patent Engineering for Essential Portfolio Development: Case study for Qualcomm’s Strategy

1,700

Published on

TechIPm's analysis sample

TechIPm's analysis sample

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
1,700
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
0
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1. LTE Patent Engineering for Essential Portfolio Development Alex G. Lee (alexglee@techipm.com) LTE Patent Portfolio Development Strategy As the start of worldwide deployment of LTE mobile services, leading mobile equipment vendors, such as Ericsson, Huawei, LG, Motorola, Nokia, Qualcomm, and Samsung, are introducing various innovative LTE products. A new study from Juniper Research showed that revenues from LTE mobile broadband subscribers will exceed $70 billion globally by 2014, and recent research by In-Stat found that the total value of global end-use LTE device market will exceed $2 billion by 2013. As the market for LTE products increases, aggressive efforts for holding the LTE patent portfolios (essential patents) are also intensified among LTE innovation leaders and OEM product manufactures. Essential patent is defined as patents that contain one or more claims that are infringed by the implementation of a specification for standardized technology. LTE is standardized through the 3GPP, and the specification for LTE mobile system (UE and base station for EPS) is published as TS 36 series. A typical way to develop the essential patent is to participate in the standardization process and try to get IPRs for the standards in parallel (strategic alignment between standardization and IPR). Without the strategic alignment between standardization and IPR process, however, there is an alternative way to develop the essential patent portfolios through patent engineering process. The LTE patent engineering process utilizes the existing patent portfolios. The patent engineering process for LTE essential patent development is as follows. Step 1: Audit the existing patents to compare with the LTE TS36 series specification. Step 2: Investigate the embodiments of the patent which are relevant to the specifications. Step 3: Design the claim terms to be essential to the implementation of the specification. Step 4: File the essential patent candidate through continuation or reissue process. Case study for Qualcomm’s Strategy Qualcomm’s patent application publication US20050276344, entitled Coding scheme for a wireless communication system, is a candidate for LTE channel coding essential patent. 3GPP LTE standard TS36.212 specifies the channel coding in chapter 5.
  • 2. The specified channel coding scheme for transport blocks is turbo coding with a contention-free quadratic permutation polynomial (QPP) turbo code internal interleaver. After the turbo encoding process, a codeword is formed by turbo-encoded bit stream, and a Rate Matching (RM) is performed on the turbo-encoded bit stream to generate a transmission bit stream for each transmission: information bits are encoded by a turbo encoder 252 with a rate 1/3 turbo code, which generates a stream of systematic bits, a stream of parity bits from the first constituent convolutional, and a stream of parity bits from the second constituent convolutional code. Each of these three streams will be interleaved by a sub-block interleaver. The interleaved parity bits are then interlaced. During the rate matching procedure, for each transmission, the transmitter reads bits from the buffer, starting from an offset position and increasing or decreasing the bit index. If the bit index reaches a certain maximum number, the bit index is reset to the first bit in the buffer (circular buffer based rate matching scheme). Incremental Redundancy (IR) based HARQ operation is adopted by optimally determining the starting point of the redundancy versions for transmission in circular rate-matching operation. Qualcomm’s patent application publication US20050276344 is a continuation application of issued patent US6961388. Qualcomm designed some claim terms to be essential to the implementation of the specification TS36.211 utilizing unclaimed patent disclosures: US6961388 36. A wireless communication system operative to transmit data on a plurality of transmission channels, wherein each transmission channel is used to transmit a respective sequence of modulation symbols, the system comprising: an encoder configured to encode a plurality of information bits in accordance with a particular encoding scheme to provide a plurality of coded bits, and to puncture the plurality of coded bits in accordance with a particular puncturing scheme to provide a number of unpunctured coded bits for the plurality of transmission channels, wherein each transmission channel is capable of transmitting a particular number of information bits per modulation symbol via a particular modulation scheme selected for the transmission channel, wherein each transmission channel is further associated with a particular coding rate based at least on the number of information bits per modulation symbol supported by the transmission channel and its modulation scheme, wherein at least two transmission channels are associated with different coding rates, and wherein the encoder is further configured to adjust the puncturing to achieve the different coding rates for the at least two transmission channels. 37. The system of claim 36, further comprising: a channel interleaver coupled to the encoder and configured to interleave the plurality of coded bits, and wherein the encoder is configured to puncture
  • 3. the interleaved bits. 38. The system of claim 37, further comprising: a symbol mapping element coupled to the channel interleaver and configured to form non-binary symbols for the plurality of transmission channels, and to map each non-binary symbol to a respective modulation symbol, wherein each non-binary symbol includes a group of unpunctured coded bits. 39. The system of claim 38, further comprising: a signal processor coupled to the symbol mapping element and configured to pre-condition the modulation symbols for the plurality of transmission channels to implement a multiple-input multiple-output (MIMO) transmission. US20050276344 30. A wireless communication device comprising: an encoder configured to encode a plurality of information bits in accordance with a particular encoding scheme to provide a plurality of encoded symbols for a plurality of transmission channels and to puncture the plurality of coded bits in accordance with a particular puncturing scheme to achieve a desired coding rate for tee plurality of transmission channels; and a data source coupled with the encoder, the data source configured to provide the plurality of information bits. 31. The wireless communication device of claim 30, further comprising a channel interleaver coupled to the encoder and configured to interleave the plurality of encoded bits. 32. The wireless communication device of claim 31, further comprising a symbol mapping element coupled to the channel interleaver and configured to form non-binary symbols for the plurality of transmission channels, and to map each non-binary symbol to a respective modulation symbol, wherein each non-binary symbol includes a group of unpunctured coded bits. 33. The wireless communication device of claim 32, further comprising a signal processor coupled to the symbol mapping element and configured to pre-condition the modulation symbols for the plurality of transmission channels to implement a multiple-input multiple-output (MIMO) transmission. 34. The wireless communication device of claim 30, wherein the encoder is further configured to puncture the plurality of coded bits to achieve a different coding for at least two transmission channels of the plurality of transmission channels. 34. The wireless communication device of claim 30, wherein the encoder is further configured to group transmission channels having similar transmission capabilities to segments, and wherein the puncturing is performed for each segment independently. 35. The wireless communication device of claim 30, wherein the encoder is further configured to assign a group of coded bits to each segment, and wherein the puncturing is performed on the group of coded bits assigned to each segment. 36. The wireless communication device of claim 30, wherein the encoder is further configured to utilize a Turbo code. 37. The wireless communication device of claim 30, wherein the encoder is further configured to provide a plurality of tail and parity bits for the plurality of information bits, and wherein the puncturing is performed on the plurality of tail and parity bits. 38. The wireless communication device of claim 30, wherein the Turbo code includes two constituent codes operative to provide two streams of tail and parity bits.
  • 4. 39. The wireless communication device of claim 30, wherein the encoder is further configured to provide bits a coding rate of between, and inclusive of, n/(n+1) and n/(n+2), where n is the number of information bits per modulation symbol supported. ©2010 TechIPm, LLC All Rights Reserved http://www.techipm.com/

×