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
In this paper, a chunk of bits is said to be ‘decodable’ if no error is detected by a given error detection scheme.
The value c may vary depending on eNB’s. For the sake of expressional simplicity, we do not apply the cell index to c.
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.
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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Lee, KD., Vasilakos, A.V. Access stratum resource management for reliable u-healthcare service in LTE networks. Wireless Netw 17, 1667–1678 (2011). https://doi.org/10.1007/s11276-011-0371-6
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DOI: https://doi.org/10.1007/s11276-011-0371-6