By Borko Furht, Syed A. Ahson
Excessive velocity Packet entry (HSPA) is a suite of 2 cellular telephony protocols, excessive velocity Downlink Packet entry (HSDPA) and excessive velocity Uplink Packet entry (HSUPA). permitting networks according to the common cellular Telecommunications method to accomplish facts charges of numerous megabits consistent with moment, those strong protocols are perfect for purposes starting from dossier move to multimedia streaming. From easy ideas to analyze grade fabric, the HSDPA/HSUPA guide offers technical details on all points of HSDPA/HSUPA. With contributions from 30 specialists from around the globe, this finished HSPA reference offers a world and authoritative standpoint of this quickly rising expertise. Investigates the connection among HSDPA/HSUPA and UMTS Describes the advantages of HSPA and its technical improvements Explains packet flows in HSDPA Explores migration concerns linked to HSPA Considers receiver designs and multi-user extensions to MIMO HSDPA proposing info in a well-structured demeanour for ease of reference, this e-book provides exact and up to date details at the complete spectrum of subject matters relating to HSPA know-how, together with destiny instructions. the suitable table reference for designers and planners of latest instant conversation networks, this ebook is also followed as a textbook for graduate and research-oriented classes that care for HSPA.
Read or Download HSDPA HSUPA Handbook (Internet and Communications) PDF
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Extra resources for HSDPA HSUPA Handbook (Internet and Communications)
3 E-AGCH The E-AGCH is a downlink physical channel carrying the uplink E-DCH absolute grant control information. The E-AGCH uses two separate physical channels (E-AGCH1 and E-AGCH2). The spreading factor used for E-AGCH is 16. 24, respectively. E-AGCH1 will carry the TPC and SS bits. The E-AGCH carries the following fields multiplexed into 23 to 26 bits: Absolute grant (power) value (5 bits). This field indicates the granted power by the base station to specific UE for E-DCH transmission. This information can be used for uplink interference and load control purposes.
It may be generated either in response to an HS-DSCH capacity request or at any other time. Node-B can use this message to modify the capacity at any time, irrespective of the reported user buffer status. 14 illustrates one possible use of the flow control messages. In the example, the first two allocation messages are unsolicited and are generated despite the user buffer size being zero. 14 20PUDs Example of Iub flow control procedure (UBS, user buffer size). 1 Concept and Principles TD-SCDMA HSDPA focuses mainly on downlink improvement of TDSCDMA systems.
2011 by Taylor and Francis Group, LLC TD-SCDMA HSDPA/HSUPA 41 1. Multi-carrier integrated scheduling (MC-IS). In MC-IS, all carriers’ resources are combined into one resource block. Scheduling and resource allocation are performed on this integrated block. 4) k=0 rik (t) is the instantaneous supporting rate of user i on carrier k. 5) k=0 where tc is the time filter constant. If the user has not been served on carrier k at time t, then, we have rik (t) = 0. 2. Multi-carrier separately scheduling (MC-SS).