Cox, D.C, "A radio system proposal for widespread low-power tetherless communications," IEEE T. on Comm. v. 39, n. 2, pp. 324--35, Feb. 1991.  Home/Search   Document Not in Database   Summary   Related Articles   Check

.... base stations (BS) according to regular hexagonal grids [10, 11, 12] Current cellular and PCS systems, with their small cell sizes, depart significantly from the ideal hexagonal layout due to terrain variations, difficulties in site acquisition, and space variations in mobile station density [7]. In quickly deployed ad hoc military or emergency communication systems, little or no planning may be possible. Distributed campus wireless LANs may add communication elements in a distributed fashion with little coordination between departments. Such smaller operators may not have sufficient ....

....of 1999 IEEE Radio and Wireless Conference (RAWCON99) pg. 51. II. MODEL: This section details the model used for this paper. The model covers both sparse range limited cellular systems and low power, interference limited, high density grids of BS such as described by Cox and references therein [6, 7]. To focus on resource allocation many of the details are abstracted or stripped away. All BS and mobiles have identical transmit power, antenna gains, etc. and the path loss is an inverse power law with path loss exponent e. All antennas are omnidirectional with no variation in the vertical ....

Cox, D.C, "A radio system proposal for widespread low-power tetherless communications," IEEE T. on Comm. v. 39, n. 2, pp. 324--35, Feb. 1991.

....of sub rated conversation. This scheme can increase capacity by 8 to 35 for systems with 1 call incompletion probability. 1 Introduction Personal Communications Service (PCS) 5] is expected to provide low power highquality wireless access to the public switched telephone network (PSTN) [6]. The service area of a PCS network is populated with a large number of radio ports To appear in IEEE Trans. Veh. Technol. 2 with each providing coverage in its vicinity. This paper assumes a fixed or quasistatic channel assignment [3] where a group of channels (time slots, frequencies, spreading ....

D.C. Cox. A radio system proposal for widespread low-power tetherless communications. IEEE Trans. Commun., 39(2):324--335, Feb. 1991.

....probability of the system without seriously degrading the number of failed initial access attempts. Some of our results are different from previous published results because our models capture features not considered in those studies. 1 Introduction A personal communication service (PCS) network [4, 5] is a digital communication network, which provides low power high quality wireless access for PCS subscribers to the public switched telephone network (PSTN) The service area of a PCS network is partitioned into several sub areas or cells. This paper assumes a fixed or quasi static channel ....

Cox, D.C. A Radio System Proposal for Widespread Low-Power Tetherless Communications. IEEE Transactions on Communications, pages 324--335, February 1991.

....in workstations connected by a local area network [4] which is widely available in both the industrial and the academic environments. III. Personal Communication Services We use personal communication service (PCS) network simulation to illustrate PDES functionality. A PCS network [25] [26] provides low power and high quality wireless access for PCS subscribers or portables. The service area of a PCS network is populated with a number of radio ports. Every radio port covers a sub area or cell. The port is allocated a number of channels (time slots, frequencies, spreading codes or a ....

Cox, D.C., "A radio system proposal for widespread low-power tetherless communications", IEEE Trans. Commun., vol. 39, no. 2, pp. 324--335, February 1991.

....layer protocols. We have analyzed and derived protocol overhead and verified it with the simulation. 1.0 Introduction There have been many efforts to serve more users with the fixed bandwidth resources. The notable efforts are the proposal for serving many users with extensive frequency reuse [1] and the new media (radio frequency) accessing mechanism (e.g. CDMA [2] that would increase the system capacity. Current cellular system also use frequency reuse technique with the cell diameter of several or tens of kilometers. The system based on the cell size of this scale is called as a ....

D. Cox, "A Radio System Proposal for Widespread Low-Power Tetherless Communications", IEEE Trans. Communications, vol.39, pp. 324-335, Feb. 1991.

....then the mobile client can depend on our mechanism to provide increased fault tolerance and more uniform performance. 1 Introduction The strongest trend in the computer industry today is the miniaturization of workstations into portable notebook or palmtop computers. Wireless network links [3] and new internetworking technology [8] offer the possibility that computing sessions could run without interruption even as computers move, using information services drawn from an infrastructure of (mostly) stationary servers. We contend that operation of mobile computers according to such a ....

D. C. Cox. A Radio System Proposal for Widespread Low-power Tetherless Communication. IEEE Trans. Communications, 39(2):324--335, February 1991.

....from the portable that enters a new zone. The portable recognizes the zone change by comparing the current zone identification with the stored last zone identification. The radio ports are assumed to transmit zone identification beacon signals periodically to assist the registration process [3]. After exchange of authentication keys, user s password is also transmitted over the radio interface in an encrypted message. 2. Upon receiving the UID and the authentication information, the zone manager (ZM) of the new zone establishes an ATM connection to the zone that contains the user ....

....in the wireless network. We will assume the following: ffl Hand off is portable initiated. The portables monitor the link quality in terms of received signal power to candidate radio ports and when the link to another port becomes stronger that port is selected and hand off is executed[3]. ffl The hand off process may be initiated in two ways: The portable may tune into the control channel of the candidate radio port and initiate a hand off through the candidate port or the portable may use the existing link with the previous port to initiate the hand off. The latter method is ....

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D. C. Cox, "A Radio System Proposal for Widespread Low-Power Tetherless Communications," IEEE Trans. on Comm., Vol. 39, No. 2, pp. 324-335, Feb. 1991.

....Bell, San Ramon, CA. the existing schemes in the literature and discussing the benefits of NCNR[9, 10, 11, 12] 2 Handoff Procedure The handoff procedure is performed to assure the integrity of a radio connection and to minimize interference to the users in the coverage area of neighboring cells[2, 3]. The wireless ATM network consists of radio ports, user terminals and network interface equipment. A user terminal might have a few simultaneous connections in the wireless ATM network. When a handoff occurs these connections may need to be rerouted. In this paper, we assume that a group of radio ....

D. C. Cox, "A Radio System Proposal for Widespread Low-Power Tetherless Communications," IEEE Trans. on Comm., Vol. 39, No. 2, pp. 324-335, Feb. 1991.

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D. Cox, A Radio System Proposal for Widespread Low-Power Tetherless Communications, IEEE Trans. on Commun., vol. 29, no. 2, Feb. 1991.

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