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AssigneeTelefonaktiebolaget L M Ericsson (publ)
InventorsJohan Bergman, Henrik Enbuske, Dirk Gerstenberger, Kai-Erik Sunell
Estimating the term…
The technology applies to a cellular radio communication system in which a mobile radio terminal transmits information in transmission time intervals (TTIs) that is received by a serving base station and by one or more non-serving base stations. A number N of hybrid automatic repeat request (HARQ) transmissions transmitted together by the mobile terminal is determined. An HARQ transmission includes a first transmission, one or more retransmissions of the first transmission, or both. An indication of the number N of HARQ transmissions is provided either directly or indirectly to the one or more non-serving base stations so that the one or more non-serving base stations can take the number N into account when combining HARQ transmissions received from the mobile terminal.
A method in a mobile radio terminal which transmits information in transmission time intervals (TTIs) that is received by a serving base station and by one or more non-serving base stations, the method comprising:
A method in a radio network controller of a cellular radio communication system in which a mobile radio terminal transmits information in transmission time intervals (TTIs) that is received by a serving base station and by one or more non-serving base stations, the method comprising, the radio network controller being coupled to the serving base station and the one or more non-serving base stations, the method comprising:
Apparatus for use in a cellular radio communication system in which a mobile radio terminal transmits information in transmission time intervals (TTIs) that is received by a serving base station and by one or more non-serving base stations, the apparatus comprising circuitry, the circuitry is configured to:
A method in a serving base station of a cellular radio communication system in which a mobile radio terminal transmits information in transmission time intervals (TTIs) that is received by the serving base station and by one or more non-serving base stations, the method comprising:
Apparatus for use in a cellular radio communication system in which a mobile radio terminal transmits information in transmission time intervals (TTIs) that is received by a serving base station and by one or more non-serving base stations, the apparatus comprising:
Dependencies are inferred from the claim text.
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Automatic repetition systems, e.g. Van Duuren systems: involving configuration of automatic repeat request [ARQ] with parallel processes
Automatic repetition systems, e.g. Van Duuren systems: hybrid protocols; Hybrid automatic repeat request [HARQ]
Arrangements specially adapted for the transmitter end: scheduling and prioritising arrangements
Performing reselection for specific purposes: for allowing seamless reselection, e.g. soft reselection
About 2 years 11 months of term left · ends 12 Sep 2029 (estimated)
The technical field relates to radio communications systems, and more particularly, to a mobile communication involving serving and non-serving radio base stations.
In a typical radio communications system, mobile radio communications terminals, sometimes referred to as user equipment units (UEs), communicate via a radio access network (RAN) and other networks like the Internet. The radio access network covers a geographical area divided into cell areas, with each cell area being defined as the radio coverage area of a base station (BS) at a base station site, which in some networks is also called a “NodeB”.
The evolution of mobile radio interface standards is strongly focused on packet access technologies where small data units or packets carry the data over the communication medium and a packet header describes the transferred data. See, for example, S. Keshav, An Engineering Approach to Computer Networking, Addison-Wesley professional computing series, ISBN 0-201-63442-2.
FIG. 1 is a diagram illustrating a round trip time (RTT) between an UE and a base station and a retransmission request from the UE to the base station;
FIG. 2 illustrates a cellular communications system with a mobile radio terminal communicating with a serving cell and a non-serving cell;
FIG. 3 timing diagram for enhanced uplink (EUL) showing a 2-msec E-DCH TTI;
In the following description, for purposes of explanation and non-limitation, specific details are set forth, such as particular nodes, functional entities, techniques, protocols, standards, etc. in order to provide an understanding of the described technology. It will apparent to one skilled in the art that other embodiments may be practiced apart from the specific details disclosed below. In other instances, detailed descriptions of well-known methods, devices, techniques, etc. are omitted so as not to obscure the description with unnecessary detail. Individual function blocks are shown in the figures. Those skilled in the art will appreciate that the functions of those blocks may be implemented using individual hardware circuits, using software programs and data in conjunction with a suitably programmed microprocessor or general purpose computer, using applications specific integrated circuitry (ASIC), and/or using one or more digital signal processors (DSPs).
The technology may be used in any type of cellular communications. For ease of description, the term mobile radio or mobile terminal is used and encompasses any kind of radio communications terminal/device like user equipment (UE), PDAs, cell phones, laptops, etc.
As explained in the background, many of today's radio communications use fast hybrid ARQ (HARQ). The fast hybrid ARQ (HARQ) between a mobile terminal and a base station involves a set of HARQ transmitting and receiving entities located in the base station and mobile terminal respectively, which entities are also referred to as HARQ processes. Each HARQ process corresponds to a data queue or buffer associated with a transmitted data unit. HARQ between the mobile terminal and the base station also employs soft combining where the base station temporarily stores a data block having an error and subsequently combines the stored data block with a retransmitted data block (or a portion of the corresponding data block), the resultant combination hopefully thus being error free.