The present invention relates generally to wireless communications. More particularly, this invention relates to multiple disparate wireless units sharing antennas.
In recent years there has been an increase effort to improve functionality of mobile personal computing systems. This has led to a desire to incorporate multiple wireless communication standards within small computing systems such as notebook computer, personal digital assistants (PDA), and other hand-held computing devices.
Two notable wireless communication standards include WiFi (based on the Institute of Electrical and Electronic Engineering (IEEE) 802.11 specification/standard) and Bluetooth® (based on IEEE 802.15 specification/standard. WiFi (wireless fidelity) provides a high-frequency wireless local area network (WLAN) standard for an over-the-air interface between a wireless client and a base station, or between two wireless clients. The 802.11 standard calls for diversity, to allow an 802.11 communications unit to chose from one of two antennas provided, based on quality of reception/transmission etc. For example, one of the two antennas may be covered by finger of user of a handheld device affecting its reception/transmission.
Bluetooth® provides an additional wireless radio standard primarily designed for low power consumption, with a range of typically 10 meters. For example, Bluetooth® provides a way to connect and exchange information between devices like PDAs, mobile phones, laptops, PCs, printers and digital cameras via the short range radio frequency. The Bluetooth® standard calls for a single wireless antenna.
Multiple disparate wireless units sharing of antennas are described herein. In one embodiment, an apparatus includes, but is not limited to, a first wireless communication unit of a first wireless communication standard, where the first standard includes selecting one of two antennas provided. The apparatus further includes a second wireless communication unit of a second wireless communication standard, where a first antenna and a second antenna are shared by the first and second communication units.
Other features of the present invention will be apparent from the accompanying drawings and from the detailed description which follows.
The present invention is illustrated by way of example and not limitation in the figures of the accompanying drawings in which like references indicate similar elements.
Multiple disparate wireless units sharing of antennas are described herein. In the following description, numerous details are set forth to provide a more thorough explanation of embodiments of the present invention. It will be apparent, however, to one skilled in the art, that embodiments of the present invention may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form, rather than in detail, in order to avoid obscuring embodiments of the present invention.
Reference in the specification to “one embodiment” or “an embodiment” means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various places in the specification do not necessarily all refer to the same embodiment.
One embodiment of the present invention provides multiple disparate wireless communication units on a computing device sharing antennas. In one embodiment, the computing device includes a first wireless communication unit of a first wireless communication standard, which calls for a choice from among two antennas provided. The computing device also includes a second wireless communication unit of a second wireless communication standard, and a first antenna and a second antenna to be used by the first and second communication units. In one embodiment, the first communication standard includes the 802.11 standard (also referenced as WiFi), and the second communication standard is the 802.15 standard (also referenced as Bluetooth). Furthermore, in one embodiment, the computing device having a hand-held form factor that is to execute a Windows or Linux based operating system, and further includes an X86 based processor.
Note that throughout this application, IEEE 802.11 and IEEE 802.15 are used as examples of two different wireless communication standards. It is not so limited. Other wireless communication standards may also be utilized.
As further illustrated, the first unit 102 is to choice from one of two wireless antennas 106, 108 included in the computing device. As illustrated, a first wireless antenna 106 is placed along a first of four sides provided in one embodiment of the chassis of the computing device, and the second wireless antenna 108 is placed along a second side, opposing the first side of the chassis.
The need to pair the wireless communication units 102, 104 with one of the antennas, usually begins with an end-user of the computing device performing an activity on the computing device that either explicitly or implicitly calls for the exchange of data via one of the two wireless communication units. In one embodiment, the call for the exchange of data is provided by the operating system of computing device, in the form of a message/interrupt provided to control logic 110 provided in the computing device 100. In response to the message/interrupt, the control logic 110 issues a signal 112 to one or both of the wireless communication units 102, 104.
In response to the signal from the control logic 110, the wireless communication unit 102 and/or 104 proceeds to gain control of an antenna to transfer or receive data, in accordance with the signal. In one embodiment, the selection of the antenna is based on one or more of several factors. For example, one of the antennas 106, 108 may already be in use by one of the units 102, 104. If one of the antennas is in use by one of the units, the antenna may be in use under a high priority mode, of multiple modes. These factors, and possibly others, are feed into a switch unit 114 in the form of signals, which uses the factors/signals to determine which wireless communication units 102, 104 are to be connected with which of the antennas 106, 108, in accordance with one embodiment.
More specifically, in one embodiment, the switch unit 114 is directed by switch control logic. In one embodiment, the switch control logic is based on an activity state of the wireless communication units 102, 104, and/or an antenna control signal 112 from the control logic 110.
In addition, the first and second wireless communication module 204-205 may be coupled to control logic 206, which may be implemented, for example, a chipset of computer system 200. In one embodiment, module 204 may include switch control logic (not shown) to control switch 203. Alternatively, the switch control logic may be implemented in module 205 or separated from any one of the modules 204-205. The switch control logic may control the switch 203 based on the activities of module 204 and/or module 205. For example, if module 204 needs to transmit or receive IEEE 802.11 signals, the switch control logic may control the switch 203 to couple module 204 to an IEEE 802.11 compatible antenna (e.g., first antenna 201). Alternatively, the switch control logic may be controlled by the control logic 206, for example, in response to an interrupt received by control logic or chipset 206. Other configurations may exist.
For example, the wireless communication unit 104 could be active with an antenna in a low priority, in which case the wireless communication unit 104 may not oppose switching antennas to allow wireless communication unit 102 to choose between antennas. Alternatively, the wireless communication unit 104 could be active with an antenna in a high priority, in which the wireless communication unit 104 would oppose to being switched to the other antenna. In one embodiment, the activity state 304 of the wireless communication unit 104 is only asserted when the wireless communication unit 104 is in a high priority mode of data exchange.
In one embodiment, the switching control logic 300 further receives the control signal 312 from the control logic 110 and an activity state 302 of the wireless communication unit 102. Based on the input signals, the switch control logic generates a switch control signal 314 feed into the switch unit 114 to direct the switch unit in connecting a wireless communication unit 102, 104 to an antenna 106, 108. In alternative embodiments, the switch control logic 300 may use alternative logic to direct the switch unit 114, as well as using alternative inputs, without departing from the present invention. Furthermore, in one embodiment, the switching logic 300 may be controlled by the control logic 110 without receiving the activity states of the wireless communication units 102, 104.
In one embodiment, the switch control logic 300 and/or the switch unit 114 are integrated onto wireless communication unit 102. In alternative embodiments, the switch control logic 300 and/or the switch unit 114 could alternatively be implemented on the wireless communication unit 104, the control logic 110, or provided as discrete units.
Alternatively, switch control logic 300 may be implemented as part of system 200 of
Note, that while
As shown in
Typically, the input/output devices 510 are coupled to the system through input/output controllers 509. The volatile RAM 505 is typically implemented as dynamic RAM (DRAM) which requires power continuously in order to refresh or maintain the data in the memory. The non-volatile memory 506 is typically a magnetic hard drive, a magnetic optical drive, an optical drive, or a DVD RAM or other type of memory system which maintains data even after power is removed from the system. Typically, the non-volatile memory will also be a random access memory, although this is not required.
While
In one embodiment the multiple disparate wireless communication units on a computing device sharing antennas are implemented on a hand-held personal computing device 500 as illustrated in
In addition, device 600 may further include a left mouse button 604, a right mouse button 605, sticky keys 606, an enter key 607, a track stick/ball 608, and a numeric keypad 609. Other components may also be included. Furthermore, in one embodiment, the computing device consists of a hand-held form factor. In one embodiment, the computing device 600 includes dimensions of approximately 4.9″×3.4″×0.9″. In alternative embodiments, the computing device may consist of alternative dimensions.
Thus, multiple disparate wireless units sharing of antennas have been described herein. Some portions of the preceding detailed descriptions have been presented in terms of algorithms and symbolic representations of operations on data bits within a computer memory. These algorithmic descriptions and representations are the ways used by those skilled in the data processing arts to most effectively convey the substance of their work to others skilled in the art. An algorithm is here, and generally, conceived to be a self-consistent sequence of operations leading to a desired result. The operations are those requiring physical manipulations of physical quantities. Usually, though not necessarily, these quantities take the form of electrical or magnetic signals capable of being stored, transferred, combined, compared, and otherwise manipulated. It has proven convenient at times, principally for reasons of common usage, to refer to these signals as bits, values, elements, symbols, characters, terms, numbers, or the like.
It should be borne in mind, however, that all of these and similar terms are to be associated with the appropriate physical quantities and are merely convenient labels applied to these quantities. Unless specifically stated otherwise as apparent from the above discussion, it is appreciated that throughout the description, discussions utilizing terms such as “processing” or “computing” or “calculating” or “determining” or “displaying” or the like, refer to the action and processes of a computer system, or similar electronic computing device, that manipulates and transforms data represented as physical (electronic) quantities within the computer system's registers and memories into other data similarly represented as physical quantities within the computer system memories or registers or other such information storage, transmission or display devices.
Embodiments of the present invention also relate to an apparatus for performing the operations herein. This apparatus may be specially constructed for the required purposes, or it may comprise a general-purpose computer selectively activated or reconfigured by a computer program stored in the computer. Such a computer program may be stored in a computer readable storage medium, such as, but is not limited to, any type of disk including floppy disks, optical disks, CD-ROMs, and magnetic-optical disks, read-only memories (ROMs), random access memories (RAMs), erasable programmable ROMs (EPROMs), electrically erasable programmable ROMs (EEPROMs), magnetic or optical cards, or any type of media suitable for storing electronic instructions, and each coupled to a computer system bus.
The algorithms and displays presented herein are not inherently related to any particular computer or other apparatus. Various general-purpose systems may be used with programs in accordance with the teachings herein, or it may prove convenient to construct more specialized apparatus to perform the required method operations. The required structure for a variety of these systems will appear from the description below. In addition, embodiments of the present invention are not described with reference to any particular programming language. It will be appreciated that a variety of programming languages may be used to implement the teachings of embodiments of the invention as described herein.
A machine-readable medium may include any mechanism for storing or transmitting information in a form readable by a machine (e.g., a computer). For example, a machine-readable medium includes read only memory (“ROM”); random access memory (“RAM”); magnetic disk storage media; optical storage media; flash memory devices; electrical, optical, acoustical or other form of propagated signals (e.g., carrier waves, infrared signals, digital signals, etc.); etc.
In the foregoing specification, embodiments of the invention have been described with reference to specific exemplary embodiments thereof. It will be evident that various modifications may be made thereto without departing from the broader spirit and scope of the invention as set forth in the following claims. The specification and drawings are, accordingly, to be regarded in an illustrative sense rather than a restrictive sense.
This application claims the benefit of U.S. Provisional Patent Application No. 60/612,605, entitled “Multiple Disparate Wireless Units Sharing Antennas”, filed Sep. 22, 2004, which is incorporated herein in its entirety.
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Number | Date | Country | |
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60612605 | Sep 2004 | US |