| Specifications | IEEE C802.16e-04/180 UL-MAP allocation in DL-MAP in OFDMA PHY Yuval Lomnitz, Noam Kogan, Yigal Eliaspur, Dov Andelman |
| Business section |
|
|
|
|
|
||||||||||||||||||||||||||||||||||
|
|
|
|
|
||||||||||||||||||||||||||||||||||
| Specifications | IEEE C802.16e-04/180 UL-MAP allocation in DL-MAP in OFDMA PHY Yuval Lomnitz, Noam Kogan, Yigal Eliaspur, Dov Andelman |
| Business section |
| Specifications | IEEE C802.16e-04/180 UL-MAP allocation in DL-MAP in OFDMA PHY Yuval Lomnitz, Noam Kogan, Yigal Eliaspur, Dov Andelman |
| Suggested Link Details/Purchase | |
| Content | 2004-06-27IEEE C802.16e-04/180 2 UL-MAP allocation in DL-MAP in OFDMA PHY Yuval Lomnitz Yigal Eliaspur Noam Kogan Dov Andelman 1. Motivation In OFDM PHY, UL-MAP always follows DL-MAP (see for example in OFDM PHY, 8.3.5.1, 4rd paragraph). This enables the SS to decode the UL-MAP in time and prepare the UL transmission. In OFDMA PHY there is no such definition, due to the concurrent nature of the PHY. This creates a problem in the turnaround from reception of UL-MAP to transmission of UL burst by the SS. In case the UL-MAP is normal DL allocation in the DL-MAP (rather than concatenated to compressed DL-MAP) then, since the DL subframe may include many broadcast bursts, the SS has no way to tell which one includes the UL-MAP, and potentially will need to decode all the DL bursts, reaching to the UL-MAP last. Since the UL-MAP is the most critical burst to decode after DL-MAP (from timing perspective), we suggest to define that UL-MAP allocation (a DL-MAP_IE pointing to the burst including UL-MAP) always appears first in the DL-MAP, if it appears. This would focus the decoder to work on this burst first. 2. Details Note that there are cases in which DL-MAP doesn’t include an allocation for an UL-MAP. One case is UL-MAP concatenated to a compressed DL-MAP. Another is a private DL-MAP (e.g. in AAS mode), that may be sent on a regular burst allocation, in which case the UL-MAP may be also sent on that allocation, or may be pointed to by the DL-MAP. The proposed rule doesn t contradict either usage model, and only requires that if the UL-MAP allocation appears in the DL-MAP, it will appear first (merely an ordering issue). The proposed change is backward compatible with REVd. 3. Changes summary [Add the following text (between BEGIN and END) in p.9, line 43, before section 6.3.2.3.5] BEGIN 6.3.2.3.2 Downlink map (DL-MAP) message [add the following text at the end of the section] The DL-MAP_IE that describes the PHY burst containing the UL-MAP (if such exists) will always appear first in the DL-MAP. END [add the following text (between BEGIN and END) before 8.4.6] BEGIN |
| Navigation | Previous Page / Next Page |
| Following Datasheets | C80216e-04_181 (2 pages) C80216e-04_181r1 (2 pages) C80216e-04_182 (2 pages) C80216e-04_183 (2 pages) C80216e-04_184 (2 pages) C80216e-04_185 (8 pages) C80216e-04_186 (4 pages) C80216e-04_186r1 (6 pages) C80216e-04_187 (6 pages) C80216e-04_187r1 (6 pages) |
Check in e-portals |
World-H-News Products Extensions Partners Automation Jet Parts |
| Sitemap Folder | group1 group2 group3 group4 group5 group6 group7 group8 group9 group10 group11 group12 group13 group14 group15 group16 group17 group18 group19 group20 group21 group22 group23 group24 group25 group26 group27 group28 group29 group30 group31 group32 group33 group34 group35 group36 group37 group38 group39 group40 group41 group42 group43 group44 group45 group46 group47 group48 group49 group50 group51 group52 group53 group54 group55 group56 group57 group58 group59 group60 group61 group62 group63 group64 group65 group66 group67 group68 group69 group70 group71 group72 group73 group74 group75 group76 group77 group78 group79 group80 group81 group82 group83 group84 group85 group86 group87 group88 group89 group90 group91 group92 group93 group94 group95 group96 group97 group98 group99 group100 Prewious Folder Next Folder |
