10 FIGS. 3a and 3b are flowcharts illustrating a method according to an embodiment of the invention; and BACKGROUND OF THE INVENTION FIG 4 inustrates a system comprising GSM/GPRS and
WLAN network elements.
Besides data carrying speech information, the amount of transferred data carrying information in other formats, such 15 DETAILED DESCRIPTION OF THE INVENTION as HTML (hypertext mark-up language) or WML (wireless
mark-uplanguage)pages,haveincreasedinmobilenetworks. FIG- 1 is a block diagram illustrating an arrangement This is due to enhanced data transmission technologies, and according to an embodiment. In the arrangement, data transadvanced terminals and applications facilitating the use of mission from a data source, such as a server S connected to the . • , , r <■ , 20 Internet, to a mobile terminal MS is done directly from an terminals also tor other purposes than for speech. ,' . , ^ . . , • T„ , .,,,
access device AD or via an intermediary device ID. As will be
As more efficient transmission technologies for mobile illustrated in more detail later, the intermediary device ID
environments and for bursty traffic have been developed, the may be assigned to transfer part of the data, for example a file,
size of transferred data units or sequences has also increased to the mobile terminal MS.
for instance due to an increased transfer of image data. In 25 Data may be transmitted to/from the MS by a base station current mobile systems data is transferred to a mobile termi- of a mobile network MNW Conventional mobile network nal via a wireless link between the mobile terminal and a elements and functions may be included in the MNW. For mobile network element. The size of files or streaming data instance, the MNW may support the GSM (Global System for can be fairly large and the delay caused by downloading a Mobile Communications), GPRS (General Packet Radio Serlarge file or some other kind of information entity from a data 30 vice), 3GPP (3rd Generation Partnership Project), a 4th gensource over a mobile connection to a mobile terminal can be eration mobile network, or WLAN (Wireless Local Area Netirritating for the user. work) standards. The server S may reside in another network
NW, for instance in a secure intranet, typically accessible by
BRIEF DISCLOSURE OF THE INVENTION the Internet. The system illustrated in FIG. 1 is only exem
35 plary, and the invention can be applied to any kind of system comprising a server, a mobile terminal, and a device func
Thereisnowprovidedanenhancedmethodfortransfernng tioning as m intermediary device ID. The mobile terminal
data. The objects of the invention are achieved by a method, a MS may be ^ mobile electronic device equipped with a
system, mobile terminals, a module, and computer programs, transceiver, for instance a laptop or a desktop computer, a
which are characterized by what is stated in the independent 40 Pda device, or a mobile station. This also applies to the
claims. Some preferred embodiments of the invention are intermediary device ID. Thus, no specific intermediary
disclosed in the dependent claims. devices ID need to be added to networks, but appropriately
The invention is based on the idea of using one or more configured already existing devices, such as mobile phones,
intermediary mobile terminals to convey at least part of the may be used.
desired data to a data requesting (first) mobile terminal. Thus, 45 Local connectivity may be arranged between the mobile
a request identifying at least part of the required data is terminal MS and an intermediary device ID directly or via a
defined by the first mobile terminal and sent to at least one third element. For this a local area connectivity in accordance
intermediary mobile terminal. The intermediary mobile ter- to some local area networking technology may be utilized.
minal sends to the data originating device a request for trans- For lnstance > IEEE 802-lh. standard based ^LAN conn^
.... , , , , , 1-14 • 1 n 50 tivity or Bluetooth connectivity may be used. However, the
mitting the data requested by the mobile terminal, ihe . . , , ,. , J , J „TM „„„ , , .
. , , ^ . ^ , „ , invention can also be applied to other IEEE 802-based wire
received data is transmitted from the intermediary mobile ^ 1 ^ ^ ^ j- n
. . . _ , . , less local area networks or to other types oi current or future
terminal to the first mobile terminal. , , , , , . „ , , .. ,.
local networks, typically to networks operating on un-h
An advantage of the method and arrangement of the inven- censed frequency bands, such as a network according to the
tion is that available data transmission resources of other 55 BRAN (Broadband Radio Access Networks) standard or a
mobile terminals may be used. For instance, a wireless local Home RF network. These local networks are often created in
area networking technique providing high speed data transfer an ad-hoc manner when two or more terminals are connected.
may be used between the mobile terminals. By using inter- The BRAN standards comprise High Performance Radio
mediary mobile terminals, it is possible to reduce the effect of Local Area Network HIPERLAN standards of types 1 and 2,
the typical bottleneck between a mobile terminal and a base 60 HIPERACCESS and HIPERLINK standards.
station of a mobile network, i.e. multiple logical wireless As illustrated in FIG. 2, the devices to which at least some
connections may be used to deliver the data to the requesting of the inventive functionality may be applied (in the example
first mobile terminal. This can considerably speed up the of FIG. 1, the mobile terminal MS and the intermediary
transmission of the desired data to the requesting first mobile device ID) comprise memory MEM, a user interface UI, I/O
terminal. For instance, the desired data may be divided such 65 means I/O for arranging communication, and a processing
that a group of five intermediary mobile terminals are used to unit PU comprising one or more processors. In one embodi
convey the data to the first mobile terminal. ment, the mobile terminal MS and the intermediary device ID