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Access stratum resource management for reliable u-healthcare service in LTE networks

Abstract

With the rapid growth of elderly population, ubiquitous healthcare (u-healthcare) service combined with advanced wireless networking technology is gaining popularity. The advance in medical sensor technology has boasted up the u-healthcare market potential. However, the global connectivity with a sufficient level of reliability is still an issue to study for its prototype development. In our previous study (Lee et al. In: Proc BodyNets 2010, Lee et al. in J Commun Netw 13(2):160–166, 2011), the energy efficient packet-level scheduling was studied but the scheduling and management topics in the access stratum, which is the beginning part of end-to-end connection for ubiquitous healthcare service, are still open. In this paper, we study an efficient and adaptive method that can provide u-healthcare user devices with an increased level of access privilege so that the healthcare related user data, which is sometimes delay-critical, can be more favorable admitted to the access stratum. We develop a mathematical formulation for the access control in access stratum domain over the existing 3.9-th generation cellular communication standard, called long term evolution (LTE) and devise an efficient and exact algorithm to solve it. The proposed method has simplicity in implementation and efficiency in operation. In addition, it can improve key performance measures, such as call blocking and call dropping performance.

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Notes

  1. 1.

    In this paper, a chunk of bits is said to be ‘decodable’ if no error is detected by a given error detection scheme.

  2. 2.

    The value c may vary depending on eNB’s. For the sake of expressional simplicity, we do not apply the cell index to c.

  3. 3.

    There are many different nodes/entities in the core network which provide their unique services and functions, such as mobility management, authentication, and so on. However, for the sake of simplicity, we will loosely say that this decision is made by eNB in this paper unless there is a confusing issue.

  4. 4.

    In our example, the ‘boundary point’ is exactly the adjacent point since there is only one unit available, if any, in the setting since the required volume is the same among different classes.

Abbreviations

3GPP:

3rd generation partnership project

BAN:

Body area network

BCU:

Body control unit

BSU:

Body sensor unit

DeNB:

Donor eNB

eNB:

Evolved node B

LTE:

Long term evolution

MBAN:

Medical BAN

MME:

Mobility management entity

MMTEL:

Mobile multimedia telephony

RAN:

Radio access network

RN:

Relay node

UE:

User equipment

WBAN:

Wireless BAN

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Correspondence to Athanasios V. Vasilakos.

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Lee, K., Vasilakos, A.V. Access stratum resource management for reliable u-healthcare service in LTE networks. Wireless Netw 17, 1667 (2011). https://doi.org/10.1007/s11276-011-0371-6

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Keywords

  • U-healthcare service
  • Machine-type communication (or M2M)
  • Long term evolution (LTE)
  • Access control
  • Access Stratum (AS)